16.12.2020

Viaduct Miyo is the highest transport bridge in the world (23 photos). Miyo Bridge - Industrial Miracle of Modern France The biggest Viaduct


One of the main wonders of the industrial world can be safely attributed to the famous Mio Bridge, which is the owner of several records at once. Thanks to this giant bridge, stretching over the huge valley of the river called Tar, ensures uninterrupted and high-speed movement from the capital of France Paris to the small town of Beziers. Many tourists who come to look at this highest bridge in the world are quite often wondering: "Why was it possible to build such expensive and difficult in technical plan a bridge that leads from Paris to a very small town of Bezier?" Viaduk Miyo was built with the sole purpose - to unload the national track, which in the season there were constantly formed huge traffic jams, and tourists traveling in France, as well as drivers trucks, were forced to stand in hours in the oppatics. It is worth noting that the passage through Viaduct, which "boil over the clouds" is paid, which does not affect its popularity among drivers vehicle And guests of the country who came to look at one of the most amazing wonders of the industrial world.

Bridge Characteristics

Viaduct Mio Bridge includes an eight-power steel road leaf supported by eight steel supports. The weight of the roadbed is 36 thousand tons, the width is 32 meters, the length is 2.5 kilometers, the depth under the bridge is 4.2 meters. The length of all six central spans is 342 meters, and two extremes have a length of 204 meters each. The road goes with a slight bias of 3%, descending from the south side to the north, it is built with a curvature radius of 20 kilometers in order to give drivers best Overview. Transport movement occurs in two strips in all directions. The height of the column is from 77 to 246 meters, the diameter of one of the longest columns is 24.5 meters at the base, and the road cannon is 11 meters. Each base has in its composition 16 sections, one section has a weight of 2.3 thousand tons. Sections were collected in place from individual parts. Each individual part of the section has a mass of 60 tons, 17 meters long and 4 meters wide. Each support supports pylons having a height of 97 meters. Initially, columns together with temporary supports were collected, then parts of the canvas moved along supports with jacks, which were controlled from satellites. The speed of moving parts of the canvas was 600 millimeters in 4 minutes.

The legendary Viaduct Miyo, which every self-respected bridge-builder knows about and who is considered a model of the technological progress of all mankind, was developed by Michel Virlazho and the architect with Norman Foster. The latter, by the way, was engaged in the recreation of the Berlin Reichstag. True, the British Queen has produced N. Foster in Knights and Baron, not for it. Talent N. Foster and made Viaduct Miyo with one of the modern wonders of the world.

In the coherent tandem, the group Eiffage, N. Poster and M.Virlazho developed the Miyo Bridge, which was solemnly opened on December 14, 2004. Already two days after the event on the end link, the first cars drove the A75. Interestingly, the first stone in the construction of Viaduct was also laid on December 14, only 2001, and the beginning of large-scale construction started on December 16, 2001. Apparently, the builders plans were coincided with the opening date of the bridge to the date of the construction of its construction.

Despite the fact that the project was attracted to the best architects and engineers, to build the highest automotive bridge in the world was unusually difficult. By and large, on our planet there are two more bridges that are located above Miyo above the surface of the Earth, is the Royal Gorge Bridge in Colorado in the United States (321 meters above the ground) and a bridge connecting two shores of the River Flash in China. True, in the first case we are talking about the bridge, which only pedestrians can use, and in the second - about Viaduct, the supports of which are located on the plateau and their height is incomparable with supports and pylons Miyo. It is for these reasons that the French bridge is considered the most difficult in constructive solutions and the highest automotive bridge in the world.

How it is done

Some Final A75 Supports are at the bottom of the gorge that shares the "Red Plateau" and Lazarar Plateau. To make the bridge completely safe, the French engineers had to develop each support: almost all of them of different diameters and clearly designed for a certain load. The width of the biggest support of the bridge reaches almost 25 meters from its foundation. True, in the place where the support is connected to the road web, its diameter is noticeably narrowed.

Workers and architects who developed the project during construction work had to face the whole mass of difficulties. First, it took to strengthen places in the gorge, where supports were placed, and secondly, it was necessary to spend quite a long time to transport individual parts of the canvas, its supports and pylons. It is enough to imagine that the main support of the bridge consists of 16 sections, the weight of each of them is 2.3 thousand tons. Looking a little forward, I would like to note that this is one of the records that belongs to Miyo Bridge.

Naturally, vehicles that could deliver such massive parts of the supports, in the world does not exist. For this reason, architects decided to deliver parts of the supports in parts (if so, of course, can be expressed). Each part of weighed about 60 tons. It is quite difficult to even imagine how long the builders have left only for delivery of 7 supports to the place of construction of the bridge, and it does not even consider that every support has a pylon height of just over 87 meters, to which 11 pairs of high-strength tests are attached.

However, delivery of building materials to the object is not the only difficulty with which engineers faced. The fact is that the valley of the Tar river has always differed in a harsh climate: warm, quickly replacing the penetrating cold, sharp gusts of wind, steep cliffs - only a small part of what was to overcome the builders of Viaduct. There are official data that the development of the project and numerous studies continued just over 10 (!) Years. Work on the construction of the Miyo bridge was completed in such difficult conditions, it can be said, in record short time - in order to realize the plan of the authors of the project, builders and other services it took only 4 years.

The roadbed of Miyo's bridge, like his project itself, is innovative: in order to avoid deformation of expensive metal canvases, which will be quite difficult to repass in the future, scientists had to be inventing an ultra-modern formula asphalt concrete. Metal canvas are quite strong, but their weight relative to the entire giant design can be called insignificant ("total" 36 thousand tons). The coating should have been protected from the deformation (to be "soft") and at the same time answer all the requirements of European standards (to resist the deformations, to be used for a long time without repair and prevent the so-called "shifts"). Even using the most ultra-modern technologies, it is impossible to solve this task in a short time. The composition of the road canvase was developed for almost three years. By the way, Miyo's asphalt concrete bridge is recognized as a unique one.

Miyo Bridge - sharp criticism

Despite the long-term development of the plan, clearly verified solutions and the loud names of the architects, the construction of Viaduct initially caused sharp criticism. By and large, in France, any construction causes sharp criticism, to recall at least the Basilica Sacre-Ker and Eiffel Tower in Paris. Opponents of the construction of Viaduct talked about the fact that the bridge would be unreliable due to shifts at the bottom of the gorge, that it would never pay off that the use of such technologies on the A75 highway was unjustified that the bypass track would reduce the flow of tourists to the Miyo city. This is only a small part of the arguments that the Government appealed to the Government of the enemy of the construction of a new Viaduct. They listened to them and for each objection was given an authoritative explanation. However, opponents, among which there were some influential associations, did not calm down and continued their protests almost all the time until the bridge was erected.

How much did it cost

The construction of the most famous French Viaduct has gone, according to the most modest estimates, not less than 400 million euros. Naturally, this money needed to be returned, so the passage of Viaductuk made a paid: a clause where you can pay "a journey through a miracle of the modern industry" is not far from the small village of Saint-Germain. Only on its construction was spent more than 20 million euros. At the point of payment there are a huge indoor canopy, for the construction of which 53 gigantic beams took. In the season, when the flow of machines in viaductuk increases sharply, use additional bands, which are on the "Bender" 16. At this point there is an electronic system that allows you to track the number of cars on the bridge and their tuning. By the way, the term of Eiffage's concession will last only 78 years, it is so much time allocated a group of the state to beat off their expenses.

Most likely, even regaining all the company's funds spent on the construction will not succeed. However, such unfavorable financial forecasts in the group are looking with a fraction of irony. First, Eiffage is far away, but, secondly, Miyo Bridge served as one more proof of the genius of its specialists. By the way, the conversations that companies built the bridge will lose money - no more than fiction. Yes, the bridge was not built at the expense of the state, but after 78 years, if the bridge does not bring profits to the group, France will be obliged to pay losses. But if Eiffage will be able to make money on Viaduct Miyo 375 million euros earlier than after 78 years, the bridge will be free of charge of the country. The term of the concession is, as already mentioned, 78 years old, until 2045, but the guarantee on the bridge group of companies gave for 120 years.

The passage along the four-band highway Viaduct Miyo is not worth the transcendental sums as you would think. The passage of a passenger car in Viaduku, the height of the main support of which is higher than the Eiffel Tower (!) And only slightly below the Empire State Bilding skyscraper, will cost only 6 euros (in season - 7.7 euros). But for two-axis trucks, the price of travel will be already 21.3 euros, for three-axis - almost 29 euros. You have to pay even motorcyclists and people moving around Viaduct on scooters: the cost of traveling in Miyo Bridge will cost them in 3 euros and 90 euro-satellites, respectively.

(from open sources)

Address: France, near the city of Miyo
Start of construction: year 2001
Ending construction: 2004
Architect: Norman Foster and Michel Virlazho
Bridge height: 343 m.
Bridge length: 2 460 m.
Bridge width: 32 m.
Coordinates: 44 ° 5'18.64 "N, 3 ° 1'26.04" E

Content:

Short description

To one of the main wonders of the Industrial world of France, you can safely attribute the world Miyo Bridge, which is the owner of several records at once.

Thanks to this giant bridge, stretching over the huge valley of the river called Tar, ensures uninterrupted and high-speed movement from the capital of France Paris to the small town of Beziers. Many tourists who come to look at this highest bridge in the world are quite often wondering: "Why was it possible to build such expensive and complex in technical plan a bridge that leads from Paris to a very small town of Bezier?".

The thing is that it is in Bezier that there is a huge number of educational institutions, elite private schools and a retraining center for highly qualified specialists.

In these schools and colleges there is a huge number of Parisians, as well as residents from other major cities of France, which attracts the elitibility of education in Beziers. In addition, the town of Beziers spread out only 12 kilometers from the picturesque coast of the warm Mediterranean, which, of course, in turn, also cannot but attract tens of thousands of tourists from all over the globe.

Miio Bridge, which can rightfully consider the top of the skill of engineers and architects, is popular among travelers as one of the most interesting sights of France. First, it opens with a luxurious view of the valley of the Tar River, and secondly, it is one of the favorite objects for modern photographers. The photo of Miyo's bridge, the length of which is almost two and a half kilometers, and the width is 32 meters, made by the best and most authoritative photo artists, decorate numerous office buildings and hotels not only France, but also of the whole world.

A particularly fantastic sight of the bridge is when cloudy is collected under it: at that moment it seems that Viaduct hangs in the air and does not have any support. The height of the bridge over the ground at the highest point is just over 270 meters.

Viaduct Miyo was built with the sole purpose - to unload the national track number 9, at which there were constantly huge traffic jams in the season, and tourists traveling on France, as well as truck drivers, were forced to stand in the opposite hours.

Miyo Bridge - Construction History

The legendary Viaduct Miyo, who knows every self-respecting specialist in the construction of bridges and which is considered a model of the technological progress of all mankind, was developed by Michel Virlazho and a genius architect with Norman Foster. For those who are not familiar with the works of Norman Foster, it should be clarified that this talented English engineer produced by the Queen of Great Britain in Knights and Baron, not only recreated, but also introduced a number of new unique solutions to the Berlin Reichstag. It is due to its painstaking work, precisely verified calculations, in Germany, in the literal sense, the main symbol of the country was revived from the ashes. Naturally, the talent of Norman Foster and made Viaduct Miyo with one of the modern wonders of the world.

In addition to the architect from Great Britain, in works on the creation of the highest transport highway in the world, a group entitled "Eiffage", which includes the famous workshop of Eiffel, which developed and built one of the main attractions of Paris. By and large, the talent of the Eiffel and employees from his bureau elevated not only the "business card" of Paris, but also all of France. In the well-coherent tandem, the group "Eiffage", Norma Foster and Michel Virlazho developed the Miyo Bridge, which was solemnly opened on December 14, 2004.

Already 2 days after the festive event on the final link of the A75 route, the first cars drove. Interesting the fact that the first stone in the construction of Viaduct was laid on December 14, only 2001, and the beginning of large-scale construction started on December 16, 2001. Apparently, the builders plans were coincided with the opening date of the bridge to the date of the construction of its construction.

Despite the group of the best architects and engineers to build the highest automotive bridge in the world was unusually difficult. By and large, on our planet there are two more bridges that are located above Miyo above the surface of the Earth: Royal Gorge Bridge in the USA in Colorado (321 meters above the ground) and a Chinese bridge that connects two shores of the River Flash. True, in the first case we are talking about a bridge that can only cross pedestrians, and in the second, about Viaduct, the supports of which are located on the plateau and their height is not able to compare with the supports and pylons Miyo. It is for these reasons that the French Miyo Bridge is considered the most difficult in constructive solutions and the highest automotive bridge in the world.

Some Final A75 Supports are at the bottom of the gorge that shares the "Red Plateau" and Lazarar Plateau. To make the bridge completely safe, the French engineers had to develop each support: almost all of them of different diameters and clearly designed for a certain load. The width of the biggest support of the bridge reaches almost 25 meters from its foundation. True, in the place where the support is connected to the road web, its diameter is noticeably narrowed.

Workers and architects who developed the project during construction work had to face the whole mass of difficulties. First, it took to strengthen places in the gorge, where supports were placed, and secondly, it was necessary to spend quite a long time to transport individual parts of the canvas, its supports and pylons. It is worth only to imagine that the main support of the bridge consists of 16 sections, the weight of each of them is 2 300 (!) Tons. Looking a little forward, I would like to note that this is one of the records that belongs to Miyo Bridge.

Naturally, vehicles that could deliver such massive parts of the Mio bridge support in the world has not yet exist. For this reason, architects have decided to deliver parts of the supports in parts (if it can be expressed so of course). Each part of weighed about 60 tons. It is quite difficult to even imagine how much time the builders have left only for delivery 7 (!) Support to the place of construction of the bridge, and this is still not counting that each support has a pylon a little over 87 meters, to which 11 pairs of high-strength tests are attached.

However, delivery of building materials to the object is not the only difficulty with which engineers faced. The point is that the valley of the Tar river has always differed in a harsh climate: warm, quickly replacing the penetrating cold, sharp gusts of wind, steep cliffs - only a small part of what was to overcome the builders of the majestic French Viaduct. There are official data that the development of the project and numerous studies continued just over 10 (!) Years. Work on the construction of the Miyo bridge was completed in such complex conditions, it is possible to even say, in record short time: 4 years it was necessary to builders and other services in order to realize the idea of \u200b\u200bNorman Foster, Michel Victory and architects from the Eiffage group.

Moio's roadbed bridge, like his project itself is innovative: In order to avoid deformation of expensive metal canvases, which will be quite difficult to repair in the future, scientists had to be inventing an ultra-modern formula asphalt concrete. Metal canvas are quite strong, but their weight, relative to the entire giant design, can be called insignificant ("total" 36,000 tons). The coating should have been protected from deformation (be soft) and at the same time answer all the requirements of European standards (to resist deformation, used for a long time without repair and prevent the so-called "shifts").

Even the most ultra-modern technologies to solve this problem in a short time simply impossible. During the construction of the bridge, the composition of the road canvase was developed for almost three years. By the way, Miyo's asphalt concrete bridge is recognized as a unique one.

Miyo Bridge - sharp criticism

Despite the long-term development of the plan, clearly verified solutions and the loud names of the architects, the construction of Viaduct initially caused sharp criticism. By and large, in France, any construction causes sharp criticism, to recall at least the Basilica Sacre-Ker and Eiffel Tower in Paris. Opponents of the construction of Viaduct talked about the fact that the bridge would be unreliable due to shifts at the bottom of the gorge; never pay off; The use of such technologies on the highway A75 is unreasonable; The bypass route will reduce the flow of tourists to the city of Miyo. This is only a small part of the slogans, with which the Table opponents of the construction of a new Viaduct appealed to the government. They listened to them and for each negative appeal to the public gave authoritative explanation. In fairness, we note that opponents, which included influential associations, did not calm down and continued their protests almost all the time the bridge was built.

Miyo Bridge - a revolutionary decision

The construction of the most famous French Viaduct was gone, according to the most modest calculations, not less than 400 million euros. Naturally, this money needed to be returned, so the passage of Viaductuk made a paid: a clause where you can pay "a journey through a miracle of the modern industry" is not far from the small village of Saint-Germain.

Only on its construction was spent more than 20 million euros. At the point of payment there are a huge indoor canopy, for the construction of which 53 gigantic beams took. In the "season", when the flow of machines according to Viaductuk sharply increases, additional bands are involved, which by the word, on the "bandwidth" 16. At this point there is a electronic system that allows you to track the number of cars on the bridge and their clouds. By the way, the term of the concession "Eiffage" will last only 78 years, it was so much time allocated a group to cover its expenses.

Most likely, even to regain all the "Eiffage" funds spent on the construction will not be possible. However, such unfavorable financial forecasts in the group are looking with a fraction of irony. First, Eiffage is far away, but secondly, Miyo bridge served as one more proof of the genius of its specialists. By the way, the conversations that companies built the bridge will lose money - no more than fiction. Yes, the bridge was not built at the expense of the state, but after 78 years, if the bridge does not bring profits to the group, France will be obliged to pay losses. But if "Eiffage will be able to make money on Viaduct Miyo 375 million euros earlier than in 78 years, the bridge will be free of charge of the country. The concession period will last, as already mentioned above - 78 years (until 2045), but the Group of Companies has been guaranteed on its majestic bridge for 120 years.

The passage of the four-band highway Viaduct Miyo is not worth the "transcendental" amounts, as many people might think. The passage of a passenger car in Viaduku, the height of the main support of which is above the most Eiffel Tower (!) And only slightly below the Empire State-Building skyscraper, will cost only 6 euros (in the "season" of 7.70 euros). But for cargo two-axle cars, the price of travel will be already 21.30 euros; For three-axle - almost 29 euros. You have to pay even motorcyclists and people moving around Viaduct on scooters: the cost of traveling on the Miyo Bridge will cost them in 3 euros and 90 euro scents.

There are a stunning miracle of engineering and design thought in France - the famous Viaduct Miyo (in the French original Viaduc de Millau). This is the highest automotive bridge at least in Europe, and as a maximum of the world (it all depends on some technical aspects of determining the specific height). It is built on a guy system - that is, the bridge is actually hanging in the air, but is supported by a special design of hard supports and flexible steel cables.

Where is Miyo Bridge

Viaduk can be seen 4 kilometers south-west of Mio's city (hence the name of the most bridge itself) in the south of France in the territory of the Oxidania region. It is laid over the valley of the Tarn River and is part of the final section of the A75 highway connecting Paris with the city of Beziers on the shore of the Mediterranean Sea.

Geographic coordinates 44.078179, 3.022670


general description

Viaduct Miyo is a fantastic sight. This bridge looks very light and air. Its length is 2,460 meters. It has 2 lanes in both directions. The total width is 32 meters, this is equivalent to 17 adult men with elongated hands, as shown in the figure below.


The bridge is striking with its sizes. As much as 343 meters high, which is 19 meters above the famous Eiffel Tower. It is worth noting that this is an absolute height rate of the biggest support along with the pylon.

A small technical retreat: Support is what goes to the bridge below, and the pylon is the upper part over the bridge.


The maximum height of the automotive canvas is 270 meters above the valley, and its thickness is 4.2 meters.

Viaduct has erected on the guidance technology and keeps on 7 supports height from 77 to 245 meters. Each of the supports is installed in 4 well 15-thyme depths and a diameter of 5 meters.

The height of all pylons is the same - 87 meters. On each 11 pairs of heavy-duty steel ropes (usually called guys) capable of withstanding a load from 900 to 1,200 tons each (depends on the length than shorter the cable, the greater the load it will withstand). There are 154 guys here. This margin of safety is fully justified, since the weight of the steel frame of the road is 36,000 tons (and this is 4 times the weight of the same Eiffel Tower).

Miyo Bridge is not straightforward, but has a slight bending in a horizontal plane with a radius of about 20 km, as well as a bias of 3.025% from the south to the north.

Do not miss the coolest street in the world. Her bias is such that the equilibrium is extremely dangerous there.
On the bridge 8 spans. Extreme 204 meters long, and the remaining 6 to 342 meters.
The construction used 85,000 cubic meters of concrete with a total weighing of 206,000 tons, while the total weight of the bridge is about 290,000 tons.

Estimated daily transport stream up to 25,000 cars.
The developer gives 120 years warning on Viaduct.


Cost of work and concession agreement

The total cost of the project is 400 million euros. To attract funds, the French government decided on the concession agreement.

Eiffage has won the tender and financed the construction in exchange for the right to collect payment for travel for 75 years, up to 2080 (this is the principle of concessions). But, if the concession becomes high income, the French government can take on the control of the bridge before.

History Viaduct Miyo

The construction of the A75 and Viaduct highway has become necessary due to the increase in the transport flow on the NO9 highway. Usually in the summer there were big congestion on it, because this path chose the majority of travelers seeking to neighborpasses.

Before the Miyo Bridge was commissioned, all cars drove through the city of the same name and periodically created a transport collapse there. And these are discontent of local residents, and increased environmental pollution. In addition, major traffic jams have practically reduced all the advantages of the A75 track.

Initially, 4 options for the final section of the A75 route were considered, but ultimately stopped at the construction of the bridge in the city of Mio.

The development and implementation of the project was commissioned by the engineer Michelin Virdendo (France) and architect Noman Fostera (England).


Sequence of events

  • In 1987, initial sketches are developed
  • In the fall of 1991, a decision is made on the specific site of the construction of the bridge
  • In July 1996, the vantistic technology of its construction is approved
  • The final approval of the concession occurred in October 2001
  • The solemn laying of the so-called "First Stone" was held on December 14, 2001
  • In January 2002, the construction of a foundation for support was launched, and in September of the same year, the flooring of the bridge was already mounted
  • The construction of the support was completed in November 2003.
  • Roads from South and North Parties approached each other on April 28, 2004 and immediately announced the docking of the roadway, although in fact for this a few more days
  • Podilov's rise was over in the middle of the summer of 2004
  • Verification of the bridge under the load of 920 tons began to be carried out in November 2004
  • The solemn discovery took place on December 14, 2004 with the participation of Jacques Chirac (at that time president of the country). But for the passage of transport, the bridge was opened only after 2 days. It is noteworthy that the bridge was opened ahead of time (he was planned to open on January 10, 2005)

Technical features of Miyo bridge

Such a terrific structure has many interesting things. technical solutions and features.

Vantha

Separate attention should be paid to steel ropes - guys. Metal cable has triple protection against rust.

  • galvanic treatment
  • protective wax coating
  • additional polyethylene extruded coating

On the outer surface of the ropes across the entire length, special combs in the form of a spiral are held. This is done to prevent the rapid flow on them. Without this technology, a strong vibration of the VANT is possible, especially in the rain with a strong wind.


Viaduct Miyo - Bridge over the clouds

Road covering

The steel frame of the road leaf is covered with a special type of asphalt concrete. In total 2 years of research, it was necessary to search for the optimal coating formula, based on the mineral resin.

The material turned out to be sufficiently soft to adapt to the deformations of the metal, without creating cracks. But it corresponds to the traditional road surface requirements, such as wear resistance, tire adhesion, density, lack of influx and beacon.

A total of 9,000 tons of special asphalt concrete and 1,000 tons of standard asphalt concrete were used.

Electrician and security systems

Such a giant design contains tens of kilometers of various electrical cables. Here are as many as 30 km of high-voltage cables, 20 km of fiber optic and 10 km of low-current cables. The viaduct provides 357 telephone points located in different parts of the bridge. This is done to quickly communicate serving teams both with the control center and among themselves.

Viaduct Miyo was literally sleeping with various sensors and tracking systems for the status of the bridge. All this combination of control equipment is designed to track the slightest oscillations and shifts of the entire design and its individual sections. The devices measure the temperature, slope change, speed and direction of the wind, as well as the mass of other parameters.

On the largest support, the deformation of the whole 12 tensometer sensors is measured. They are able to catch a shift literally into the micrometer. And up to 100 measurements per second are carried out. All data on the status of the viaduct flocks into the center of control and management, located in the area of \u200b\u200bthe departure item.

Is the Miyo's most high bridge?

Viaduct has a lot of competitors. There are designs are significantly higher and wider, but everyone has its own. These are mainly measurement methods and technical features.

For example, in Colorado (one of the US states) there is a bridge Royal Gorge (in the original ROYAL GORGE BRIDGE). It runs at an altitude of 321 meters relative to the surface of the Earth, but is a bridge only for pedestrians.

Now Miyo Bridge is inferior at the height of the road directly by the road to the Chinese bridge on the River Flyce. Its height is 472 meters above the gorge. And here there is a "but" - supports of this bridge, like other top bridges lie on the hills, and not at the bottom of the gorge intersect. But Viaduct Miyo Supports are installed right at the bottom of the gorge. Therefore, from a constructive point of view, Miyo bridge has the right to carry the title of the highest in the world.


Best places for review Viaduct Miyo

Of course, such an attraction bridge is well visible from afar, but there are places from which it looks as impressive as possible.

Cape Bunas

Excellent review of Viaduct and its surroundings. Go from Miyo on the road D 992 towards Albi / Toulouse. At the village of Chrissel, turn to Brunas Street and go through 5 km along a narrow road to the observation site.

Geographic coordinates 44.070574, 3.058249

Luzenson

Approximately in a kilometer in a straight to west of the village of Saint-Georges de Lusenson there is an observation deck with an excellent view of Mio Bridge. Follow the signs to Albi / Toulouse to Saint-Georges de Lusenson. Then go on signpoints on the Luzenson viewing area.

Geographic coordinates 44.064485, 2.969102

Village Paire.

It is located on the banks of the Tarn River just 2 kilometers west of Viaduct. Go there from the city of Miyo on the road D 41.

Geographic coordinates 44.091668, 2.999611

Recreation Area on the North Term Viaduct Miio

This sightseeing site offers unusual types of bridge. From the city of Miyo, use the road RD991 in the northward direction. On the annular junction of Berger, 7 km from Miyo, the 4th Congress towards the rest area. Next, on foot about 500 meters south.

Geographic coordinates 44.091944, 3.022049

Lerouge Bridge (Lerouge Bridge)

This bridge is now on the site of the "old bridge" (Pont Vieux), washed away by flooding in 1758. From here there is a great overview for Viaduct Miyo. Especially at sunset. This view point lies near the city center.

Geographic coordinates 44.092823, 3.075350


Bridge Leruzh

Terrace Beffroy de Miyo

This is a bell tower, known as the tower of the kings of Aragon. The octagonal tower of the 17th century rises by 42 meters above the center of the Old Town. A visit is open from mid-June to mid-September. For more information, visit the Miyo tourist center, it is located opposite the Tower.

Geographic coordinates 44.097992, 3.078939

Viaduct Miyo and Sport

The bridge is not intended for pedestrians, but they still pass on it.

In December 2004, 19,000 runners were able to run over the bridge, but only to the first pilon. Then they were not allowed, since the bridge was still closed to movement.

May 13, 2007 - 10,496 runners still crossed Viaduct Miyo. The total distance of the race was 23.7 kilometers
Since then every 2 years, there are running here, during which the bridge overlap to move transport for 3-4 hours.



To learn better about Viaduct, see the following video. Do not pay attention to Millau's signature. It is just an alphabone translation of the French Millau Bridge Name.

Viaduka Miyo. (Millau) - Viaduc de Millau The highest bridge in the world. Its largest bridge support has a height of 343 meters. Weight 36000 tons, and seven steel pylons each at 700 tons. Viaduct length 2 460 m. Two supports reach a maximum height on the planet (p2 \u003d 245 m and p3 \u003d 221 m)

It crosses the Tarn valley at an altitude of about 270 m above the earth. The road leather 32 m wide is a four-way (two bands in each direction) and has two backup bands. It is worth 7 supports, each of which is crowned with a pilon with a height of 87 m (11 pairs of VANT are fixed).

The radius of curvature in 20 km allows the machines to move along a more accurate path than if it was a straight line, and gives Viaductuk the illusion of non-configuration.

Concrete structures ensure the mounting of the road linen from the ground at the plateau of the Larka and the Red Plateau, they are called stood.

Characteristics of Viaduct Miyo (Millau) - ViaduC de Millau

Viaduct Miyo (Millau) - Viaduc de Millau

No. p / p Basic technical parameters of the guy bridge
1 Bridge circuit: 204 + 6x342 + 204 m
2 The total length of the bridge - 2460 m
4 Maximum span length - 342 m
5 General dimensions of the span structure 32x4.2 m
6 Number of traffic strips - 4 3.5 m (2 in each direction)
7 Maximum road linted height: about 270 m above the ground
8 Height of pylons (body support + pylon) - 343 m
9 Maximum height (pillar height P2): 343 m, that is, 20 m above the Eiffel Tower.
10 The bias: 3.015%, rising from north to south in the direction of Clermont-Ferran - Bezier.
11 Radius of curvature: 20 km
12 The height of the largest support (P2): 245 m.
13 The height of the smallest support (P7): 77.56 m.
14 Pylon height: 88.92 m.
15 Number of supports: 7
16 Number of VANT: 154 (11 pairs on pylons located on one axis).
17 Pressure on the guys: 900 tons for the longest.
18 The weight of the steel canvas: 36,000 tons, that is, 4 times more than the Eiffel Tower.
19 The volume of concrete structures: 85,000 m2, which is 206,000 tons.
20 Cost of construction Viaduka: 478 ml of dollars,
21 The cost of construction of construction for 1 month 1 million dollar
22 The term of the concession: 78 years (3 years of construction and 75 years of operation).
23 Project Architect Lord Norm Foster
24 Warranty: 120 years

Stages of construction Viaduct Miyo

1st stage. Construction of intermediate supports

Supports has a complex geometry that narrows to the top with the vertical slits to create shadows.

Support Viaduka Miyo - site

Supports were built using a vertical self-lifting formwork. 16 tees tons of reinforcement went to the construction of Viaduct Miyo. The total height of the supports is more than a kilometer.
Sections for concreting equal in height 4 m. The formwork shape had to be changed more than 250 times.

Support Viaduka Miyo - site

The length of all reinforcement rods is 9000 km is distances from Viaduct to Central Africa. If an error is allowed for 10 cm concreting, then the support will not reach 10 cm. In the construction of the supports used GPS navigation, measurement error 4mm, the error of the support structures in terms of 2 cm.

Day of delay in the construction of Viaduct Millau is worth the contractor 30 tees dollars. Numbering 7 supports starts from the north of the valley.

200 TIS concrete tons for the construction of Viaduct.

2nd stage of construction. Longitudinal gang

The longitudinal jigging of the span structure weighing 36 tees tons on the Tarn river at an altitude of 270 m. The span structure of Viaduct Miyo is designed with steel with a total 2,5 km long. The company that was engaged in the manufacture of a span structure was Eiffel.

The company produced 2200 blocks of the span structure weighing up to 90 tons, the length of some reached 22 m in length. Production accuracy was achieved with a laser. Metal cutting was fully automated with the use of a plasma cutter, each detail with a complex geometry cut out without problems. Cutter temperature reached 28 TIS degrees Celsius.

The gap was performed on both sides, and there must be connections over the Tarn River. For longitudinal shutters, the viaduct was used (receiving console for a temporary support and capital support) and a pylon for the additional rigidity of the span structure.

Temporary supports were a height of 170 meters, the design of which consisted of welded sections of metal pipes. Supports were supposed to withstand 7,000 TIS tons 90 meter pylon and parts of the bridge.
Technology shuttles. In capital supports, push the pushing devices of 4 sets for each support. Every 4 minutes the design moved by 600 mm.

3 Stage of construction Viaduct. Installation of pylon

Installation of pylons from a horizontal position to vertical with the use of jacks.

4 stage of construction of Viaduct. Installation of guys

Viaduka's guys must hold the road leaf weighing about 40 tees tons. Viaduct bath design consists of 154 cable. The cable consists of 91 ropes that can withstand 25 tees tons.

5 Stage of the construction of Viaduct. Laying asphalt

Asphalt coating will add to the total weight of the construction of another 10 tiss tons. Deflection 26 cm after check-in 28 loaded dump trucks with a total weight of 900 tons. The highest bridge in the world was calculated on the deflection of 54 cm.

The longest suspension bridge in the world, the highest highway, the highest 343 meter bridge on the ground

Design Viaduct Miyo

The metal span structure of the viaduct, very lung compared to its total mass, about 36,000 tons has a length of 2,460 m and a width of 32 m. The cloth has 8 flaps.
Six central spans have a length of 342 m each, and two extremes - 204 m.

The canvas consists of 173 central caissons, the real spine of the facilities to which side flooring and extreme caissons are tightly soldered.
Central caissons consist of sections 4 m wide and 15-22 m in length with a total weight of 90 tons. Road canvas has the shape of a turned the wing of the aircraft so that it is less than the impact of the wind.

Digger Viaduka Miyo - site

Supports and foundations

Each support is standing in four wells in a depth of 15 m and a diameter of 5 m

Support height in (m) Viaduct Miyo

P1 P2. P3 P4 P5 P6 P7
94,501 244,96 221,05 144,21 136,42 111,94 77,56

Pilons.

Seven pylons height 88.92 m and weighing about 700 tons stand on supports. Each of them is attached 11 pairs of VANT, supporting the road fabric.

Vantha

The guys were developed by the Freussin community (FR. Rgeuzücher. Each rope has received triple protection against corrosion (galvanization, coating with protective wax and extruded polyethylene shell). The outer shell of the VANT across the entire length is equipped with a double helix. The goal of such a device is to avoid the runoff. Water on the guitans, which, in the case of a strong wind, can cause the vibration of the VANT, which will affect the stability of the viaduct.

Coating of the prenatal canvas

To resist the deformation of the metal canvas due to the movement of the vehicle, the research group "Appia" (Fr. Arria) has developed a special asphalt concrete based on mineral resin.

Slended to adapt to the deformation of steel, not giving cracks, it, however, had to have sufficient stability to respond to road criteria (wear, density, structure, grip, resistance to deformation - the formation of furrows on the road, etc.) . It took two years of research to find the "ideal formula".

Electrical equipment Viaduka

Electric equipment of the viaduct is proportional to the whole huge construction. Thus, 30 km of high voltage cables were laid on the bridge, 20 km of optical fiber, 10 km of low voltage cables and 357 telephone connections were created to communicate with each other and to communicate with the control center, wherever they are on the canvase , supports or pylons.

As for the equipment, Viaduct, of course, did not remain without various devices. Supports, canvas, pylons and guys, all are equipped with a large number of sensors. They were conceived in order to track the slightest shift of Viaduct and evaluate its stability after the expiration of wear time.

Anemometers, accelerometers, biasmakers, temperature sensors, etc. - all are included in the set of measuring instruments used.
12 optical fiber tensometers were placed at the sole of P2 support. Being the highest support of the viaduct, it is exposed to the largest load.

These sensors capture any shift from the norm on the micrometer. Other strain gauges, already electrical, were placed on the vertices of P2 and P7 supports. This equipment is capable of making up to 100 measurements per second.

With strong wind, they allow you to constantly observe the reaction of the Viaduct on exclusive weather conditions. Accelerometers located in strategically important items of the canvas control the oscillatory phenomena that can affect metal structures. The location of the canvas at the level level is observed up to a millimeter.

As for the VANT, they are also equipped with equipment, and there are thorough observation for their aging. Moreover, two piezoelectric sensors collect a variety of traffic relating to traffic: the weight of the machines, the average speed, the flow density, etc. This system is able to distinguish 14 different types machines.

The collected information is transmitted via the network like an Ethernet to a computer into the information premises of the Viaduct's operation building, located near the barrier of the Point Point Point.

Road duty

The rate charged by the concessionaire road duty is established by him every year in accordance with the current legislation in the framework of five-year plans, which are approved by two participants in the contract.

  • 5.4 € for passenger cars (7,00 € in July and in August);
  • 8.1 € for intermediate types of transport (10.6 € in July and in August);
  • 19.4 € for two-axis machines exceeding 3.5 tons (all year);
  • 26,4 € for three-axis machines (all year);
  • 3.5 € for motorcycles (all year).

Construction Viaduct Miyo (Chronology)

  • Construction duration - 38 mice
  • October 16, 2001: Start of construction.
  • December 14, 2001: Bookmark "First Stone".
  • January 2002: Laying the foundation of the supports.
  • March 2002: The beginning of the installation of item C8.
  • June 2002: Starting the installation of the supports - the end of the installation of the C8.
  • July 2002: Start setting temporary supports.
  • August 2002: The beginning of the installation of it is CO.
  • September 2002: Start mounting the floor of the bridge.
  • November 2002: Support P2 (the highest) surpassed a height of 100 m.
  • February 25, 2003: Start of the flooring of the roadway.
  • May 28, 2003: Support P2 reached a height of 180 m, thus becoming the highest support in the world (before that the owner of the world record was Viaduct Kohrital). This record was again breaking at the end of the year with a height of 245 m.
  • July 3, 2003: The beginning of the plotting process L3.
  • The tip was completed after 60 hours. By the end of the tip, the road fabric was temporarily attached to the support to believe in its stability in the event of a storm at a wind speed of 185 km / h.
  • August 25-26, 2003: Plot L4. Road canvas shifted from P7 support to the PI6 temporary support.
  • August 29, 2003: Pipples of the road leaf along the intermediate support PI6 after overcoming 171m. The road fabric was raised to a height of 2.4 m so that it could pass over the temporary support PI6. After that, Freussine temporarily put the pylon RZ on the P7 support.
  • September 12, 2003: The second flooring (L2) 114m metal bridge flooring from the northern side of Viaduct. The first tip (L1) was produced on Earth quite close to the level of sensation, allowing to check this procedure and technical devices.
  • November 20, 2003: the end of the construction of supports.
  • March 26, 2004: The plot of the L10 site from the south side. Road canvas reached PZ support.
  • On the night of April 4-25, 2004: Metal flooring brought to P2 support, the highest in the world. The operation of the flooring slowed down due to wind and the fog vellenges that interfered with the laser vendor. At this point, 1,947 m of the road canvase was completed.
  • April 29, 2004: The end of the velvet flooring on the north. The edge of the road canvase was on the same line with Tarn. It remained to make two more tips on the south side.
  • May 28, 2004: The North and South Waters are at a distance of several centimeters from each other. Officially announced the connection of these parts (in fact, the final docile was completed over the next few days).
  • The end of July 2004: Finished pylon raising.
  • September 21 - 25, 2004: Beginning of the road cover laying by the Appia group. For this, 9,000 tons of a special asphalt concrete and 1,000 tons of ordinary asphalt concrete were used in the center.
  • November 2004: End of dismantling temporary supports.
  • November 17, 2004: The beginning of the test of the design (920 tons of total load).
  • December 14, 2004: Viaduct's solemn discovery by President of France Jacques Chirac.
  • December 16, 2004, 9:00: Opening of Viaduct for traffic before the scheduled period (initially Viaduk was going to open on January 10, 2005).
  • December 18, 2004: Completion of the latest finishing works.

Viaduct Miyo is the highest bridge on the planet, the road canvas here is located at an altitude of 270 meters above the ground. The height of the bridge supports is 244.96 m, and the length of the largest mast - 343 m. The basis of the structure is 36,000 tons of steel. Thus, the beautiful bridge beat three records at once and earned a reward of the International Association of Road-Bridge Construction.

Millau Viaduct is located in the south of France (not far from the city of Miyo) and passes over the valley of the Tarn River. An overhead transition is part of the route A 75 and leads from Paris to the Mediterranean Sea, more and more likely and fastest route to the city of Beziers.

Travel on the abbreviated path is paid and ranges from 4.6 to 33 euros, depending on the type of transport and season. A ride on a passenger car costs from 9.1 to 7.3 euros.

The total length of the Miyo bridge is 2460 m, and the width is 32 m - four stripes. Viaduct is made in the form of a semicircle with a radius of 20 km. The construction holds seven concrete supports, the highest of which is higher than the famous Eiffel Tower by almost 20 meters. From wind cars are protected by a special durable screen. Move through the bridge transition is allowed at a speed not higher than 90 km per hour.

Talk about the need to build a short path in the Mio region began in 1987. Already at that time, the road leading to the sea were loaded. In 1996, he took the final decision to build a cable bridge with several spans, and in 2001 Architects Norman Foster and Michel Virlazho began to implement their project into reality.

After three years, in December 2004, Viaduct was commissioned. About 400 million euros are spent on construction.

Despite the rapid construction, Miyo bridge meets the strictest safety requirements. Each support was developed separately, given not only the load, but also the place of installation in a complex landscape.

A special roadbed was used for the coating - a specially designed composition of asphalt concrete, resistant to deformation and not requiring frequent repairs, which is difficult to carry out under the conditions of Viaduct.

Engineers have established a minimum life of Viaduct Miyo - 120 years old. The construction is under constant control and exposed to planned maintenance. To monitor the state of the viaduct, the sensors are set. In constant mode, engineers are observed for sensor signals.

The appearance of the bridge causes admiration - stylish and modern, soaring over the beautiful Tarn valley. It is already calculated to the wonders of light. Photo by Viaduka decorates souvenir products, and tourists specially go here to appreciate the scale of the structure and admire the beautiful landscapes, opening up from the highest bridge in the world.


2021.
POLYESTER.RU - Magazine for girls and women