On March 10, 2023, the first drilling of the Hangzhou Bay Cross -sea Railway Bridge on the sea, which means that the world's longest cross -sea high -speed railway bridge maritime project officially started construction.

The Hangzhou Bay Railway Bridge is undertaken by the construction management of Shanghai -Hangzhou -Hangke companies, the design of China Railway and China Railway Bridge Institute, China Consultation Management Supervision, China Railway Bridge Bureau and other units. The design speed is 350 kilometers per hour, with a total length of 29.2 kilometers. Bridge crossing the embankment, the sea, and the shallow beach area, which is a high -speed railway bridge cluster project.

The Hangzhou Bay Cross -sea Railway Bridge Command of the Hangzhou -Hangzhou Institute commanded Qian Leping, who said that the bridge was designed according to the no -rail track. The train is running at a speed of 350 kilometers per hour. If the track is slightly not smooth, it will affect the comfort of the ride. Therefore, the no -orbital track has high requirements on the linear of the large span bridge.

At present, the largest span of non -rail bridge in China is only more than 300 meters. The largest main span of the Hangzhou Bay Cross -sea Railway Bridge is 450 meters. The sea conditions are very complicated. In addition, the speed of the train is high. The comfort, safety, and stability of high -speed pass. Facing the challenge, China Railway and China Railway Bridge Institute carried out a large number of computing and research work on the structural system. It adopted a series of innovative designs such as the medium tower vertical fixation and the vertical elastic constraints of the edge tower to reduce the displacement and deformation of the main beams and increase the bridge. Rigidity, improve the comfort of train driving.

Hangzhou Bay is one of the three strong tension bays in the world. It has the characteristics of width, wind, and emergency in the sea. Xu Bingfa, Secretary of the Party Working Committee of the Hangzhou Bay Cross -sea Railway Bridge Project of the China Railway Bridge Bureau, said that in order to solve the construction problem, the China Railway Bridge Bureau has set up a scientific research team to solve the problem of the construction problem of large -span no -rail bridge in complex environments. It will also be in the future. The construction of high -speed railway bridge provides reliable experience.

It is reported that the Hangzhou Bay Cross -sea Railway Bridge is a controlled project for the Tongsu -Kajia high -speed rail. After the completion of the Tong Sujia high -speed rail, it will be operated with a number of routes such as Yancheng to Nantong High -speed Railway, Beijing -Shanghai high -speed rail, Shanghai -Kunming high -speed rail, Ningbo to Taizhou high -speed rail. Connecting multiple lines, the road network structure in the Yangtze River Delta is more complete, and the people along the route are facilitated. Edit/He Yuting