Open a road on a mountain and bridge on a river.

A bridge flies over the bridge, and a chasm leads to the road.

The Liuchonghe Grand Bridge of Qianxi Zhijin Expressway spans the Liuchonghe Canyon at the boundary between Qianxi City and Zhijin County. The whole bridge is exquisite in design, beautiful in shape, magnificent in momentum and spectacular. In February 2013, the Liuchong River Bridge was completed and opened to traffic, officially ushering Qianxi into the "high-speed era".

Liuchonghe Bridge, with a main span of 438m, is a prestressed concrete cable-stayed bridge with the largest span in Guizhou Province. The main beam of the bridge is of π beam structure, the main tower is of diamond structure, and the bridge deck is about 400m above the water surface.

"Liuchong River Super Major Bridge has created the first research on crack resistant fine design of concrete cable-stayed bridges in China, and the research results have reached the international leading level. The results have been successfully applied to the design, and good results have been achieved, avoiding the crack problem during the construction of similar bridges in China. The C60 mountain sand concrete is applied to the long-span concrete bridge for the first time, which provides a new idea for selecting high-strength building materials according to local conditions in the mountainous areas lacking river sand. It is also the first time in the province to carry out special research on wind resistance and seismic design in the design of long-span prestressed concrete cable-stayed bridges in mountainous areas, which has accumulated valuable design experience for similar bridges in the future. " Zhou Xiao, senior engineer of Guizhou Communications Planning, Survey, Design and Research Institute, told the reporter.

Tianyan News Reporter of Guizhou Daily

Xie Jiajie, Wu Dongzhi, Xiang Chun, Kuang Guangbiao

Edited by Wu Dongzhi

Second instance Lu Xiaojuan

Third trial: Jiating Chen Haidong