The total length of Siduhe Bridge is1365m, which consists of bridge1105m and subgrade of 228.9m.. Yichang bank is the tunnel anchor and Enshi bank is the gravity anchor. The main span of the bridge is 900 meters and the bridge deck is 24.5 meters wide. The tower height of Enshi bank of the bridge is118.2m, and the tower height of Yichang bank is113.6m.. The height difference from the top of the tower to the bottom of the valley is 650m, and the bridge deck is 560m from the bottom of the valley, which is equivalent to 200 stories high. It is the longest suspension bridge in the world built in a deep mountain valley in China, and the first mountain bridge with a span of over 900m in the world. It is 307 meters and 290 meters higher than French Mi Yue Bridge and royal gorge bridge, Colorado, USA. It was once called the highest suspension bridge in the world. September 20 16 10, Yunnan-Guizhou North Panjiang Bridge closed, known as the best Gao Qiao in the world.
main feature
The terrain of the bridge area is undulating, the construction site is narrow, and the traffic conditions are difficult. It has the following characteristics:
(1) Bridge spans the Sidu River Gorge, and the height difference between the deck carriageway and the valley bottom is 560m, which is 290 m higher than the Gao Qiao of French Mi Yue Bridge. It was once known as the highest suspension bridge in the world.
(2) The single cable force of Yichang bank tunnel anchor is 20,000 tons, which is one of the largest tunnel anchors of suspension bridges under construction in China. The tunnel anchor is located above the bifurcated highway tunnel, with the minimum distance of 23 meters from the highway tunnel, and the interaction is complex, which has no precedent at home and abroad.
(3) For the first time in China, a rigid central buckle is set in the span of the main cable. Compared with the conventional longitudinal damper, it not only effectively improves the longitudinal stiffness and wind stability of the bridge, but also improves the mechanical characteristics of the structure and reduces the later maintenance workload.
(4) Adopting innovative replaceable anchorage system;
(5) The steel-concrete composite bridge deck is the first in China;
(6) Using rocket launchers to cross canyons is a precedent in the history of bridge construction in China and even in the world.
The oldest tree and the tallest bridge.
From Wang Ying Town, Lichuan City, Hubei Province, to the Hurongxi Expressway, you have to go through Moudao Town, where there is the largest and oldest Metasequoia tree in the world, known as the "King of Metasequoia".
This Metasequoia glyptostroboides grows about 0/00 meters away from the highway. It is more than 30 meters high, almost the height of a 12 floor. I don't need a description at all. I sincerely admire her for standing up straight.
As early as 194 1, Gando, a professor of forestry at Central University, discovered this ancient and rare tree on the road. After repeated investigation, research and identification by many botany and biology experts, it was officially identified as Metasequoia in 1948, with a tree age of about 600 years. This Metasequoia glyptostroboides with a DBH of 2.4m and a crown width of 22m is the largest and oldest Metasequoia glyptostroboides tree in the world, and it is called "the king of Metasequoia glyptostroboides" and "the living fossil of plants". Metasequoia glyptostroboides has long been extinct in other parts of the world, and the earliest Metasequoia fossils have been found about 60 million to 1 100 million years. The discovery of Metasequoia has overturned the conclusion that Metasequoia has long been extinct.
Once, a Japanese botanist crossed the ocean to find a way. When he came to the "Metasequoia King", he fell to his knees with a plop and knocked his head three times. Then he stroked the rough trunk and cried like crazy with tears: "I finally saw the living Metasequoia."
Facing the ancient "King Metasequoia" in front of me, I stood respectfully. quiet inside, with his hands folded, said two words silently, praying for friends and relatives: peace and health.
I don't know about the existence of the "King of Metasequoia", but I have heard of the "Gao Qiao in the world" on the Shanghai-Chengdu-West Expressway: The Siduhe Bridge in Enshi is the highest bridge in the world, with a deck and canyon bottom of 560m, which is equivalent to 200 stories high.
Siduhe Bridge starts from Yichang in the east and ends in Enshi in the west, with a total length of1365m. The canyon here is too deep, and there are cliffs on both sides. When building a bridge, the guide cable of the bridge should not be thrown to the other side, and it is not appropriate to use an airplane or a hot air balloon. When the project manager of the bridge was ill and hospitalized, he had a whim from the needle principle: launching rockets and throwing pilot cables.
It is this whimsy that has become the first case in the history of bridges in the world to successfully solve construction problems with military rockets.
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The tallest bridge in the world is Siduhe Bridge, which is a high-speed passage connecting Yichang and Enshi in Enshi Tujia and Miao Autonomous Prefecture, Hubei Province, China. It is a part of expressway (national highway G50) and the first large suspension bridge in China.
Siduhe Bridge started construction on August 20th, 2004. On June 24, 2008 10, the closure project was completed and the whole bridge was connected. It was opened to traffic on June 5438+065438+1October 65438+May 2009.
Design parameters:
The slope on both sides of Siduhe Bridge is 70-90 degrees, and the height difference from the bottom of the valley to the bridge deck is 560 meters.
The total length of the bridge is 1 100 meters, and the span arrangement is (900+5×40) meters. The main bridge is 900 meters long, the approach bridge is 5×40 meters long and the bridge deck is 24.5 meters wide. The main truss is 6.5m in height, 26.0m in width, 6.4m in internode length and 12.8m in big internode length. Transverse spacing of steel longitudinal beam1.95m, beam height 0.66m, beam length 6.36m. Prefabricated slab length 6.36m, width1.65m and thickness 0.1.6m..
What bridge is behind Siduhe Bridge? Behind Siduhe Bridge is Beipanjiang Bridge. According to relevant information, we know Siduhe Bridge and Beipanjiang Bridge Siduhe Bridge, and now China has the title of infrastructure madman in the world. Siduhe Bridge is a part of China-Hubei Enshi Tujia and Miao Autonomous Prefecture, which connects Yichang City and Enshi City's expressway, and is a part of Shanghai-Chongqing expressway (National Highway G50). Siduhe Bridge started construction on August 20th, 2004.
The types of bridges with the largest span in the world are divided into Siduhe Bridge: arch bridge, beam bridge, suspension bridge and cable-stayed bridge. The span of various types of bridges has become one of the goals that all countries in the world compete to surpass. The following is the super bridge brought by Siduhe Bridge.
The world's longest cross-sea bridge, the longest span bridge for both public and railway, and the first cross-sea bridge for both public and railway are under construction in China. This bridge is becoming a new "business card" for China. China's bridge industry has created a number of "world firsts" for bridges in the world.
Span is an important index to measure the technical level of a country's bridges. In recent ten years, Siduhe Bridge has set a new world bridge construction record in China almost every year. China accounts for more than half of the world's top ten arch bridges, top ten beam bridges, top ten cable-stayed bridges and top ten suspension bridges. Chongqing Chaotianmen Bridge (span 552m) in steel arch bridge, Shibanpo Yangtze River double-track bridge (span 330m) in beam bridge, Sutong Yangtze River Bridge in cable-stayed bridge (span1088m) and Xihoumen Bridge in suspension bridge (span1650m) are all super-long-span bridges of the same type.
The longest sea-crossing bridge in the world-Jiaozhou Bay Sea-crossing Bridge
Qingdao Bay Bridge, also known as Jiaozhou Bay Cross-sea Bridge, was completed and opened to traffic in June 201/year. This is a super-large sea-crossing bridge designed, built and built by China. With a total length of 36.48 kilometers, the bridge is the longest sea-crossing bridge in the world.
The longest sea-crossing bridge under construction in the world-Hong Kong-Zhuhai-Macao Bridge
The Hong Kong-Zhuhai-Macao Bridge starts from Hong Kong in the east and reaches Zhuhai and Macau in the west, with a total length of 55 kilometers. It is the longest sea-crossing bridge under construction in the world. In June 5438+February 65438+May 2009, the construction of the Hong Kong-Zhuhai-Macao Bridge officially started; On September 27th, 20 16, the whole bridge project was completed. The whole bridge is expected to be completed and opened to traffic by the end of 20 17.
Hutong Yangtze River Bridge, the world's largest span highway-rail bridge
The Hutong Yangtze River Bridge under construction, with a main span of1.092m, will be the first cable-stayed bridge in the world with a span exceeding1000m. The main tower of the bridge is 325m high, which is equivalent to100th floor. It is the world's tallest cable-stayed bridge for highway and railway. Construction started on March 20 14, and the concrete pouring of the pier cap of No.28 main tower has been successfully completed recently, entering a new construction stage. It is expected that 20 19 will be completed and opened to traffic.
The longest high-speed railway bridge in the world-Dankun Bridge
The super-large railway bridge between Danyang and Kunshan on the Beijing-Shanghai high-speed railway, with a total length of 164.85 km, is the longest bridge in the world. The bridge runs through the river network landform in the southern Jiangsu plain, crosses roads, railways and waterways, and crosses the land of southern Jiangsu with the proud posture of a modern high-speed rail bridge. 20 1 1 officially opened to traffic in June.
Chaotianmen Yangtze River Bridge, the longest steel arch bridge in the world
The Chaotianmen Yangtze River Bridge in Chongqing has a main span of 552 meters, exceeding the Huangpu Bridge with a span of 550 meters built in 1996, becoming the largest steel arch bridge in the world. Construction started in March 2006 and was opened to traffic in April 2009.
The world's first real cross-sea bridge for highway and railway-Pingtan Strait Bridge for highway and railway.
The Pingtan Strait Cross-sea Bridge, with a total length of 16 km, is the key control project of newly-built Fuping Railway and Changle to Pingtan expressway, and it is the first truly cross-sea bridge. At present, the bridge is under intense construction, and it is expected to be completed and opened to traffic on 20 19.
Siduhe Bridge, the tallest suspension bridge in the world
Siduhe Bridge, located in Badong County, Hubei Province, is a controlling bridge project in expressway, Shanghai and Chongqing. Its main span is 900 meters, and its deck is 560 meters away from the bottom of the valley, which is equivalent to 200 stories high. It is the first Gao Qiao in the world. In September this year 10, Junihe Bridge, a control project of Hangrui expressway, was officially closed. The bridge deck is 564 meters away from the bottom of the valley, which will set a new world Gao Qiao record when it is completed and opened to traffic.
China Railway Bridge Bureau, the most "cow" bridge-building enterprise in the world.
Before 1990s, Wuhan Yangtze River Bridge 1957 was opened to traffic, and Nanjing Yangtze River Bridge 1968 was opened to traffic. Almost all large bridges in China were built by China Railway Bridge Bureau. 2 1 century, the Tianxingzhou Yangtze River Bridge in Wuhan, the Dashengguan Yangtze River Bridge in Nanjing and the Zhengzhou Yellow River Bridge in Beijing-Shanghai high-speed railway designed and built by China Railway Bridge Bureau were completed, and the construction of China high-speed railway bridge reached a new level. At the same time, as the main force of bridge construction, China Railway Bridge Bureau has participated in the construction of world-famous cross-sea bridges such as Hangzhou Bay Bridge, Qingdao Jiaozhou Bay Bridge, Hong Kong-Zhuhai-Macao Bridge and Pingtan Strait Highway-Railway Bridge. China Railway Bridge Bureau is known as "the enterprise with the largest number of bridges built in China", and has designed and built more than 2,000 bridges at home and abroad, with a total mileage of over 2,000 kilometers.
Innovation of bridges in China.
The Hong Kong-Zhuhai-Macao Bridge, listed as one of the "Seven Wonders of the Modern World" by the British newspaper The Guardian, is one of the projects with the most complicated technology and the highest construction requirements and standards in China's traffic history. The complex and harsh marine environment and the construction standard of 120 service life make it a vast world for new technology, new equipment and new technological innovation.
"These beams, pier caps and piers were prefabricated in stages at Zhongshan Prefabrication Factory, 45 kilometers away from the bridge. The beam was hoisted at every span. In other words, it is a building block construction scheme, which improves the construction environment of workers, from high altitude to the ground, from site to workshop, from decentralized construction to overall hoisting. " Tan Guoshun, project manager of Hong Kong-Zhuhai-Macao Bridge of China Railway Bridge Bureau, pointed to Jiuzhou Waterway Bridge and told reporters.
Jiuzhou Waterway Bridge of Hong Kong-Zhuhai-Macao Bridge, with main tower height120m. Because it is close to Zhuhai Airport and Macau Airport, the height limit of aviation restricts the construction of the main tower. In this respect, it is the first time in the world that builders have completed the construction of 1000-ton steel tower in the workshop and installed it on the main tower pier with floating crane.
20 13 12. The first composite beam of Hong Kong-Zhuhai-Macao Bridge was successfully erected.
Tan Guoshun said that bridge construction is developing in the direction of integration, industrialization and standardization, and the development and application of new construction equipment has promoted the development of overall bridge prefabrication and erection technology.
On the Qingzhou Waterway Bridge of the Hong Kong-Zhuhai-Macao Bridge, which has the longest main span and the tallest main tower, a pair of huge "Chinese knots" stand over Lingdingyang.
"The Chinese knot is the first beam on the main tower of a bridge made of steel structure in the world, and the installation accuracy requires 2 mm." Wen Dean, project manager of the Hong Kong-Zhuhai-Macao Bridge of the Second Public Security Bureau of China Communications, said that the accuracy of the steel structure is mm, while the accuracy of the concrete bridge tower is cm, and engineers made the two perfectly connected on the Lingdingyang.
The emergence of world-class bridges comes from the breakthrough of key technologies and the development and application of new materials. The upgrading of bridge steel is an outstanding example of the breakthrough of new materials.
Before Nanjing Yangtze River Bridge, China did not have its own bridge steel, and all the bridge steel used in Wuhan Yangtze River Bridge was imported from abroad. After the self-developed "anti-competitive steel" was used in Nanjing Yangtze River Bridge, China successively developed bridge steels Q370 (one square millimeter can bear 37 kilograms of tension), Q420 and Q500, so the bridges built in China used domestic bridge steels on a large scale.
Xiao Haizhu, deputy chief engineer of China Railway Bridge Institute, introduced that the steel used to build Wuhu Yangtze River Bridge was Q370, and the steel used for Nanjing Dashengguan Yangtze River Bridge was Q420, which was the highest grade bridge steel newly developed and produced at that time. As the "world's first highway-railway bridge" with a main span of over 1000 meters, Hutong Yangtze River Bridge must use Q500 grade high-strength bridge steel. China Railway Bridge Bureau joined hands with Angang and WISCO to tackle key problems and finally won the bid.
"Chinese bridges have continuously surpassed and conquered a number of key technologies, promoted the research and development of new materials and equipment, supported the construction of key scientific research bases, improved technical standards and norms, and greatly enhanced the international competitiveness of China enterprises." Zhou Wei, chief engineer of the Ministry of Transport, said.
20 14 12 14, the pile foundation construction of the bridge project was completed.
Different from the river-crossing bridge, the mountain-crossing bridge has its unique difficulties. For qingshui river bridge, a world-class bridge with a span of1130m, the geological conditions are complicated, there are no transportation roads, there is no leveling ground, there are strong winds, heavy fog and rain in the valley, there are not many construction technologies for reference, and challenges are everywhere.
Due to the karst terrain, large materials cannot be hoisted vertically. The young bridge engineer of CCCC Second Public Security Bureau creatively used the technology of kilometer-class large-tonnage cable crane to solve the technical problem of large-tonnage hoisting in alpine valleys.
Baling River Bridge, dozens of kilometers away from qingshui river bridge, with a main span of1088m, is another mountain bridge that has achieved many technological innovations.
Xu Gang, then deputy manager of the Fifth Branch of CCCC No.2 Navigation Bureau and project manager of Baling River Bridge, said that the bridge deck crane was used for the first time to erect steel truss stiffening beams of long-span suspension bridges in China, and the excavation and pouring of tunnel anchors was the first in the world.
Today, "Made in China" bridges are spread all over Asia, Africa, Europe and America, and Chinese bridge builders are fighting all over the world. "Made in China", a bridge across natural barriers and connecting the world, is becoming a resounding "China business card".
This bridge is an extension of the road. The newly published Medium-and Long-Term Railway Network Planning shows that by 2020, the scale of China railway network will reach 6.5438+0.5 million kilometers, including 30,000 kilometers of high-speed railways, forming a "eight vertical and eight horizontal" high-speed railway network. With the rapid extension of high-speed railway, the bridge construction of high-speed railway will be better innovated and developed.
1400 years ago, a bridge leading the world like Zhao Zhouqiao was born in China. Nowadays, the bridges in China are taking a new step, and the roads in China are getting wider and wider.
Take a trip to Siduhe Bridge in Badong and feel the highest suspension bridge in the world. Do you remember? Have you ever heard of Enshi Siduhe Bridge? On the expressway from Yichang to Enshi, just cross a tunnel! Siduhe Bridge is located at the junction of Yichang City and Enshi City, Hubei Province. It is a large suspension bridge in mountainous area with a span of more than 900 meters. The bridge spans the Sidu River Canyon and is the largest suspension bridge built in the deep mountain canyon in China at present. The bridge deck is 560 meters away from the bottom of the valley, which is equivalent to 200 stories high. It was once considered as the highest suspension bridge in the world.
Let's look at Enshi Badong again. Badong County is a county in Enshi City, Hubei Province. The place is not big, but it is known as "the throat of Sichuan and Hubei and the gateway to western Hubei". Badong county is rich in natural resources, unique scenery and simple folk customs. The magical and beautiful Badong County combines the beauty of the Three Gorges, Guilin and Zhangjiajie. Today, after the tour, we will take you into Siduhe Bridge, a free minority tourist attraction.
Siduhe Bridge is majestic and steep. It is said that the construction project is very big and the construction is very difficult. It is the first move to build a bridge in the world to launch a traction cable with a missile. When you walk on the expressway, you will suddenly find that the stone next to you says: The tallest bridge in the world. Then look down and it will make you jump. It's too high and scary. I really doubt how this bridge was built.
There is no need for tickets for Sidu River scenic spot in Badong. It can be reached from Yeshanguan town by bus or by car 15 minutes. This expressway Bridge, don't stop at will when you drive by. There are memorial stone tablets at both ends of the bridge, so you can stop and take pictures. If you know the local people, you can take the path, climb up the hill from the path and see the magnificent bridge. The tourist attractions under the bridge have yet to be developed and the supporting facilities need to be improved. The water of Sidu River in the canyon is quiet and green, but there are too many steps down to the canyon, so I still didn't go down this time.
Maybe someone will ask, is it possible to cross Siduhe Bridge by bus? Yes, you can, but you can hardly see it in the car. Long-distance buses all go to expressway. So where is the photo angle of Enshi Siduhe Bridge better? 3 18 national highway construction access road can be photographed with a good angle. If possible, you can bring an aerial camera, preferably a drone!
You can drive under the bridge at the eastern end of Enshi Ba on the southern line, and there is a lot of parking space. Parking is forbidden on the bridge, so if you want to see the tallest bridge in the world, you need to go to the approach bridges at both ends of the bridge. There is a construction site in the development and construction of the scenic spot, and there is also a path built along the mountain side, which can go down to the village at the foot of the mountain for about two hours. But you can only see the bottom of the bridge and the canyon, and the mountains in the distance.
Remind everyone that if a cyclist drives to play, please park the vehicle under the bridge (four-wheel drive off-road vehicle+differential lock can be ignored), and then walk for 20 minutes to take pictures. The slope of the road is steep and steep, and boulders slide down from time to time on the mountain. In fact, the road conditions are more dangerous. After the fight, I returned to the bridge safely. After a short rest, I reluctantly embarked on a journey home under the sun.
Do you know where the highest suspension bridge in the world is? Do you know Enshi has the longest span bridge in China? Siduhe Bridge is the pride of Badong, Hubei Province. Total length of bridge1.365m. Yichang bank is a tunnel anchor, Enshi bank is a gravity anchor, flying over the river like a dragon, with green on both sides, which is quite awesome. Although Siduhe Bridge has been replaced by the opening of Beipanjiang Bridge at the junction of Yunnan and Guizhou provinces, it is still a miracle in the history of Chinese bridges.