With the placement of the final deck girder, the construction of the steel structure of Wujiang Bridge of the Hexing-Yuqing Highway in Southwest China's Guizhou Province was completed by China Communications Construction Company Limited (CCCC) subsidaries. It is designed by CCCC Highway Consultants Co., Ltd. and invested and built by CCCC First Highway Engineering Group Co., Ltd.
Wujiang Bridge is located at the junction of Fenggang, Sinan and Shiqian counties, with a total length of 1,834 meters and a main span of 504 meters. It is a upper-bearing steel tube concrete arch bridge, and currently has the largest span in the world. It adopts an integral arch-column-beam structure without bearings, which was first developed by China, and the main arch, columns and beams of the bridge are connected by high-strength bolts. Its construction difficulty exceeds that of other similar bridges in the world.
The bridge has a total of 15 steel beams, among which the final beam is the heaviest and largest, with high requirements for air humidity, wind speed and other climate factors during construction. Technical personnel had to monitor climate change around the clock, track the real-time data of the beams' elevation, axis deviation and mileage changes in the hoisting process, and make dynamic adjustments to ensure the accurate control of the beams' connection.
Once in service, the bridge will accelerate the building of Guizhou into a demonstration province in the western region of China, improve regional transportation capacity and services, as well as improve the industrial structure, resources exploitation and tourism industry.
(Executive editor: Xie Yunxiao)
