How is the world s longest pedestrian suspension bridge earthquake resistant?

In order to maintain the stability of the soft rope in the sense of structural mechanics, in addition to the slings of ordinary suspension bridges, the engineers also set up windproof cable equipment to pull down on both sides of the bridge.

Because it is currently located in the Tianmeng Mountain Pedestrian Suspension Bridge in the Tianmeng Tourist Area of Linyi City, Shandong Province, the total length of the bridge is 505 5 meters, and the main span is 420 meters. The height of the bridge deck from the bottom of the valley is 143 meters, the main girder of the bridge is 4 meters wide, and the sidewalk is 2 4 meters wide. After reading this set of data above, the width of the bridge, the span of the bridge, and the distance from it to the bottom of the valley look very elongated in general.

In addition, it is still a suspension bridge, which is like a soft rope hanging between the peaks on both sides. If the main body of the bridge is subjected to a huge external force, such as strong winds in a valley or **, the bridge may become unstable and unsafe due to huge deformations. From the perspective of the location of the tectonic structure, Tianmeng Mountain is located in the western Shandong fault zone in the southeast of the North China fault zone, close to the Yishu fault zone.

It is a broad, gentle fault zone with fracture cuts to the bottom of the earth's crust, and it has maintained intermittent differential upward movements from the end of the Tertiary to the present, controlling the activity in the fault block. According to the historical record, many destructive ** events occurred around, with an intensity of impact on the project location reaching 5 6 degrees, and then, the suspension bridge connected the two peaks of the Tianmeng Mountain Wanghai Tower and Yuhuangding, spanning the huge V-shaped valley. The natural conditions of the valley are very complex.

The special terrain will not only gather strong winds, but also increase the response to **.

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The stressed structure of the bridge deck of the Tianmengshan pedestrian suspension bridge is formed by the crossbeam and the longitudinal cross made of I-shaped steel, and the X-shaped angle steel is used in the middle to stiffen, and the steel structure longitudinal beam is connected by high-strength bolts, and this structural form is adopted to reduce the quality of the bridge structure and improve the seismic performance of the bridge.

Triangular structure, the triangle has stability, will not be unstable, through the triangular principle to construct the world's longest pedestrian suspension bridge, so as to achieve a stable, and seismic effect.

Its bridge deck is criss-crossed with I-shaped steel, with X-shaped angle steel in the middle, and then paved with a 10-centimeter-thick concrete slab, and then connected with high-strength bolts, which is this structure to improve the seismic effect.

The longest rope bridge in the world is made of much stronger material than ordinary rope bridges, and the railings around the rope bridge are made of earthquake-resistant material.

Completed in 1998, the Akashi Kaikyo Bridge in Japan is the largest suspension bridge in the world.

On April 5, 1998, the world's longest suspension bridge, the Akashi Kaikyo Bridge in Japan, was officially opened to traffic. The bridge is located between Kobe City and Awaji Island in Japan (135 degrees 01 minutes east longitude, 34 degrees 36 minutes north latitude), with a total length of 3,911 meters and a main pier span of 1,991 meters. The two main piers are 297 meters above sea level, the foundation diameter is 80 meters, and the water section is 60 meters high.

The two main steel cables are about 4,000 meters each, with a diameter of meters, and are composed of 290 thin steel cables and weigh about 50,000 tons. Construction of the bridge began in May 1988. It was completed in March 1998.

For the first time, the Akashi Kaikyo Bridge uses 1800MPa ultra-high-strength steel wire, which reduces the diameter of the main cable and simplifies the connection structure, and is the first suspension bridge main cable, which is also the first cross-valley suspension bridge constructed by the jacking method, which was built by the French Eiffel Group Company.

Japan's Akashi Kaikyo Bridge, completed in 1998, is the largest suspension bridge in the world, with a span of 960m+ and a high main tower; The main cable diameter year completed Japan Tatara Bridge is the world's largest steel cable-stayed bridge, span length 270m + 890m + 320m, the main tower is a diamond-shaped steel tower, the tower is 220m, the whole bridge 168 cable-stayed cables. At the beginning of the 21st century, many countries are planning ultra-long span bridges, such as the Gibraltar Strait Bridge in Spain and Morocco, with a main span of 5,000m. In the Tsugaru Strait of Japan, the main span of the bridge is about 4,000 meters long, and the technical problem has been solved.

As the most dazzling pearl on the first ring road of Foshan——— known as the world's first span single-tower single-span four-cable surface self-anchored suspension bridge ——— the main tower saddle of Pingsheng Bridge was successfully completed on the 24th.

Located in Pingzhou, South China Sea, Pingsheng Bridge connects Shunde District across the Dongping Waterway, and is an important transportation hub in the Guangzhou-Foshan Economic Circle under construction and a landmark project on the First Ring Road of Foshan under construction. The main bridge of the bridge is meters long, the main span is 350 meters, the main tower is 142 meters high, the height is equivalent to more than 40 floors, the total cost is 100 million yuan, due to the characteristics of large span, it has become the world's largest single-tower four-cable surface self-anchored suspension bridge.

Akashi Kaikyo Bridge, Japan.

In Taishun County, Wenzhou City, Zhejiang Province, Baihe Villa has a total length of 358 meters and a height of 48 meters from the water, which is the most in China!

1. The Longqiyuan Scenic Area in Xikeng She Town, Wencheng County, Wenzhou, has the longest pedestrian chain bridge in the country.

2. The pedestrian chain bridge in the Longqiyuan Scenic Area is 362 meters long.

3. Longqiyuan Scenic Area is 37 kilometers away from Wencheng County, and Baizhang Waterfall, Shiyang Forest Park, Tongling Mountain National Forest Park, Feiyun Lake, Yanmen Grand Canyon, Liu Ji's hometown and other scenic spots are within 18 kilometers, which can be called the "axis" of Wencheng Tourist Scenic Area. The scenic area is 1,266 hectares, with a forest coverage rate of 96%.

In Wenzhou City, Zhejiang Province, Taishun County, White Crane Villa.

Guizhou Baling River Bridge is located in Guanling County, Guansuo Town, Zhensheng Expressway, the main bridge is 1088 meters of steel truss suspension bridge, the bridge length is 2237 meters, the bridge deck to the water surface of the Baling River 370 meters, the whole bridge uses all kinds of steel about 10,000 tons, with 800,000 bolt groups, a total investment of 100 million yuan, the approach bridge uses 50 meters of prestressed concrete continuous rigid structure, the east bank approach bridge is 200 meters long, the whole bridge is about 250,000 square meters of concrete, and the use of various types of steel is about 10,000 tons. Because the bridge crosses the Guanling Grand Canyon, after the investigation and demonstration of bridge experts at home and abroad, the bridge was finally determined to use the bridge deck crane to assemble the steel truss girder in place from the tower to the middle of the span section by section.

Guizhou Baling River Bridge is a large-span steel truss suspension bridge with a span of "the first in China and the sixth in the world". The bridge has five "firsts" in scale and five "firsts" in construction technology, spanning the Baling River Gorge and is currently the largest steel truss stiffened beam suspension bridge in China. The east tower is 186 meters high and the west tower is 201 meters high, and the terrain on both sides of the valley is steep and undulating, with the valley reaching a depth of 400 to 600 meters.

The Baling River Bridge is connected to the magnificent Huangguoshu Waterfall in the east, the Soma Ancient Road of the Three Kingdoms in the west, the mysterious Hongyan Tianshu in the south, and the Dishuitan Waterfall in the north.

Jiangyin Yangtze River Highway Bridge is China's first extra-large steel box girder suspension bridge with a span of more than 1,000 meters, and it is also the "first in China" in the 20th century.

1. The world's fourth" large steel box girder suspension bridge is the main trunk line of the national highway from Tongjiang to Sanya and the main trunk line of the national highway from Beijing to Shanghai in the main skeleton of the national highway across the river "throat" project, and is the second bridge across the north and south of the Yangtze River in Jiangsu Province.

Wuhan Yangsigang Yangtze River Bridge is 1,700 meters high, ranking first in China and second in the world.

The main span of the Nishihormon Bridge is 1,650 meters long.

The Nishihormon Bridge is the world's first span steel box girder suspension bridge. The main bridge is a two-span continuous semi-floating steel box girder suspension bridge, with a main span of 1,650 meters, ranking first in the world at present.

Second, the first in China, of which the total length of the steel box girder ranks first in the world. The design navigation grade is 30,000 tons and the service life is 100 years. The bridge has the highlights of high technical difficulty, scientific and technological innovation, and high wind resistance.

The longest suspension bridge in China --- Jiangyin Yangtze River Bridge.

Jiangyin Yangtze River Highway Bridge is China's first extra-large steel box girder suspension bridge with a span of more than 1,000 meters, and it is also the "first in China" in the 20th century.

1. The world's fourth" large steel box girder suspension bridge is the main trunk line of the national highway from Tongjiang to Sanya and the main trunk line of the national highway from Beijing to Shanghai in the main skeleton of the national highway across the river "throat" project, and is the second bridge across the north and south of the Yangtze River in Jiangsu Province.

The main span of the Nishihormon Bridge is 1,650 meters long.

The main bridge is a two-span continuous steel box girder suspension bridge, with a main span of 1,650 meters, which is currently the world's largest span steel box girder suspension bridge, and the total length ranks first in the world in the suspension bridge.

Second, the first in China, but the length of the steel box girder suspension is the first in the world. The design navigation grade is 30,000 tons and the service life is 100 years. The bridge is located in the sea area frequently affected by typhoons, and the hydrological, geological and climatic conditions are complex, and there is no practical precedent for building extra-large span steel box girder suspension bridges in the wide sea surface of the typhoon area in China.

All the bridge builders adhere to the concept of innovation, management innovation and scientific and technological innovation, the implementation of fine management, overcome difficulties, work hard, and overcome one difficulty after another. When Typhoon Weipa hit Zhoushan in mid-September 2007 and Rosa in early October, the maximum wind force measured on the bridge reached 13 on the Xihuomen Bridge, and the bridge, which was in the girder erection stage, successfully withstood the test. At present, relying on the construction of the Xihuomen Bridge, the national science and technology support plan project - "key technology research and engineering demonstration of cross-sea extra-large span steel box girder suspension bridge" project feasibility study report has been reviewed and approved by the Ministry of Science and Technology and the Ministry of Communications.

The 50-kilometer-long Zhoushan Island Project is one of the key projects in Zhejiang Province and one of the "Five Ten Billion Yuan" projects, and will fully integrate Zhoushan traffic into the Yangtze River Delta Expressway network after the completion of the project. At 11:18 a.m. on December 16, 2007, the steel box girder of the 126th section of the Xihuomen Bridge of the Zhoushan Liandao Project was hoisted and connected.

That's it for him ... Jiangyin Yangtze River Bridge.

China's "most bullish" suspension bridge, which also used rockets when it was built, has been open to traffic for 10 years!

Why don't you check the Ma'anshan Yangtze River Highway Bridge?

Jiangyin Yangtze River Highway Bridge.

Jiangyin Yangtze River Highway Bridge is located in Jiangyin City, Jiangsu Province, east of Huangtian Port, Xishan and Jingjiang City, Jiangsu Province.

The face of the polder village. It is the cross-river throat project of the main trunk line of Heilongjiang Tongjiang to Hainan Sanya National Highway and the main trunk line of Beijing to Shanghai National Highway (G2 Beijing-Shanghai) in the main framework of China's two vertical and two horizontal highways.

The Jiangyin Bridge adopts a steel suspension cable with a main span of 1,385 meters, which is the first super-large steel box girder suspension bridge with a span of more than one kilometer in China, and ranks first in China among the bridges built when it is completed.

1. Fourth in the world. The construction of the Jiangyin Yangtze River Highway Bridge started in 1994 and was completed and opened to traffic in October 1999.

Runyang Yangtze River Bridge.

Located on the west side of Zhenjiang and Yangzhou in Jiangsu Province, Runyang Yangtze River Bridge is the largest span composite bridge in China.

At that time, the bridge was the largest modern super-large bridge project with the largest engineering scale, the highest construction standard, the largest investment, the most complex technology and the highest technical content in China, and it was the first combined bridge with rigidity and flexibility in China.

Nishihormon Bridge.

Xihuomen Bridge is a super-large sea-crossing bridge with the highest technical requirements among the five sea-crossing bridges of the Zhoushan Island Project connecting Zhoushan Island and Ningbo, and the main bridge is a two-span continuous steel box girder suspension bridge, with a main span of 1,650 meters, ranking first in the suspension bridge in the world.

2. China is the first, of which the total length of the steel box girder ranks first in the world among suspension bridges. The design navigation grade is 30,000 tons and the service life is 100 years. On December 25, 2009, the Nishihumon Bridge was officially opened to traffic.

The main bridge is a two-span continuous steel box girder suspension bridge, with a main span of 1,650 meters, ranking first in the suspension bridge in the world.

2. China is the first, of which the total length of the steel box girder ranks first in the world among suspension bridges. The design navigation grade is 30,000 tons and the service life is 100 years. On December 25, 2009, the Nishihumon Bridge was officially opened to traffic.