Construction in China, Hangzhou Bay cross -sea bridge, about 36 kilometers in length, witness the sea and sky during the journey

Hangzhou Bay Cross -sea Bridge

The Hangzhou Bay Cross -sea Bridge is 36 kilometers in length. The Qiantang River, Hangzhou Bay and the Yangtze River Delta, which spans the East China Sea, is the longest cross -sea bridge in the world independently designed and built by China. Bridge Donghai Bridge. The Hangzhou Bay Cross -sea Bridge is an important connection part of the national road of the eastern China Highway. From Jiaxing in the north, to Cixi in the south, there is a six -lane two -way highway at a speed limit of 100 kilometers per hour. Excellent sightseeing scenery. If you are interested in this, click the useful button above the screen.

Hangzhou Bay Cross -sea Bridge

As early as 1994, China began preparations for the Hangzhou Bay cross -sea bridge. Construction projects began in June 2003 and completed in June 2007, and the opening ceremony was held. Before opening to traffic, it also carried out about one year of testing and evaluation carefully to confirm the stability and safety of the bridge. What difficulties did the Hangzhou Bay cross -sea bridge encountered during the design and construction process, so that after completion, it had to be opened after careful testing?

Hangzhou Bay Cross -sea Bridge

Hangzhou Bay is located in the East China Sea of ​​China. There is a tide of Qiantang River, one of the famous natural wonders in China, so there are often turbulent water flow and huge waves. Here are the typhoon Yifa area, and typhoons are often violated every summer. All kinds of natural and geographical factors have formed the extremely difficult construction conditions for the Hangzhou Bay cross -sea bridge. After discussions from more than 700 engineering experts from home and abroad, as well as nine years of research and more than 120 technologies, the construction plan of the Hangzhou Bay cross -sea bridge was finally determined.

The construction project has chosen the design of the cable bridge, because the cable bridge structure can withstand unfavorable conditions such as turbulent water flow and storm at the construction site. In addition, the stability of this bridge structure also meets the earthquake standards, and can still maintain integrity when the seven -level earthquake occurs. The construction team adopted a prefabricated component on land, and then transported it to the sea site for installation to build this cable bridge. For this reason, a 10 -kilometer -long trestle bridge was temporarily built. Bridge piles and construction of transportation docks.

Hangzhou Bay Cross -sea Bridge

Another challenge facing the Hangzhou Bay Cross -sea Bridge project is the natural gas that erupted along the shallow floor of the bridge line at any time. Before the construction project officially started, experts and engineers conducted a special research on this and conducted an exploration survey to confirm the gas distribution and soil nature of natural gas during the release and release. In the end, the construction team decided to release natural gas before piling in the bridge to avoid any interference to the soil underwater soil, including the collapse of the ground or natural gas gas eruption to ensure the safety of the bridge.

After the completion of the Hangzhou Bay Cross -sea Bridge, the distance from Ningbo to Shanghai was shortened by 120 kilometers. The schedule was shortened from 4 hours to 2 hours and a half, which greatly had traffic transportation costs, which improved transportation efficiency. In the first year, nearly 50,000 cars pass through. At the same time, the bridge has also improved the transportation layout of the Yangtze River Delta region, which helps to form a more convenient and efficient transportation network in the Yangtze River Delta region, so that each of the closer relationships with each other is not distinguished. change.

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