The first cross-sea highway-rail bridge was put into trial operation. How to build such a spectacular project?

2065438+September 25th, 2009 (Lunar calendar 2065438+August 25th, 2009), the first railway bridge across the sea in China was completed. On September 25th, 20 19 10: 28, the last piece of steel truss beam, with a length of 17.5 m, a width of 36.8 m, a height of 15 m and a weight of 473 tons, was lifted to the design elevation by a girder crane, which is one of the three major waterway bridges of Pingtan Strait Highway-Railway Bridge. Pingtan Strait Highway-Railway Bridge is completely closed. The Pingtan Strait Highway-Rail Bridge is16.34km long, starting from Matsushita Town, Changle City, Fujian Province, passing through Rendao, Changyu Island, Xiaolian Island and Da Lian Island, and passing through Justin Waterway, Guyumen Waterway, Dalian Waterway and Beidongkou Waterway in turn, and reaching Shangpingtan Island in Suao Town. * * There are three steel structures, namely Justin Waterway, Guyumen Waterway and Dalian Waterway. Among them, Justin Waterway Bridge and Big-Small Connecting Waterway Bridge were closed on June 5, 20 19 and June 28, 20 18 respectively. According to Gao, chief engineer of China Railway Bridge Institute, the Taiwan Province Strait, where the bridge site is located, is one of the three famous stormy seas in the world. The sea environment is complex, with strong winds, high waves, rapid currents and hard rocks. Bridge-building restricted area? . China Railway Bridge Bureau successfully solved a series of problems in bridge construction under harsh and complex marine environment in the construction of Pingtan Strait Highway-Railway Bridge, accumulated experience in design, construction, supervision and construction management, and formed a set of bridge construction technologies in complex sea areas, which has important reference significance for similar bridge projects in the future, and also made Pingtan Strait Highway-Railway Bridge a new milestone in the history of bridge construction in China. The Pingtan Strait Highway-Rail Bridge started on June 20th, 200311,and is expected to be fully open to traffic in 2020. It is the key control project of newly-built Fuping Railway and Changle-Pingtan Expressway. The upper layer is designed as a six-lane expressway with a speed of100km, and the lower layer is designed as a two-lane I-class railway with a speed of 200km. The closure of Pingtan Strait Railway Bridge laid a solid foundation for the opening of Fuping Railway and Changle-Pingtan Expressway. After the bridge is opened to traffic, the time and space distance from Fuzhou to Pingtan will be greatly shortened, and the two places will form half an hour? Economic life circle? This will speed up the construction and setting up of Binhai New Town? Free Trade Zone+Experimental Zone+International Tourism Island? The strategic docking of Pingtan Comprehensive Experimental Island with the three major countries is of great significance to promoting the economic development of the Haixi.