文档介绍：重庆忠县长江大桥
Chongqing, Zhongxian, Yangtze River bridge, located in the upper reaches of the county town 8 kilometers, builrated from the main girder and tower, by external prestressed tendons and bearing the hourglass as a whole, in the main span closure when removing external prestressing tendons and bearing to achieve longitudinal restraint to lift hourglass.
after the main span is closed, adjust the last couple of cables to reduce the temporary preload and reduce the difficulty of the closure.
the steel hanging box cofferdam and steel in the first quarter of the floating platform assembly, check in place after the whole lift, and then exit the floating platform first submerged in the water, reduce water and check in shore assembling construction process, to gain time for the construction period.
both steel cofferdam and steel cofferdam are sealed at the bottom of the two times.
Chongqing, Zhongxian, Yangtze River bridge, located in the upper reaches of the county town 8 kilometers, built in October 2008.
It is understood that the bridge length 2174 meters, is the first large span, high tonnage, deep foundation Long bridge, is a perfect combination of cable-stayed bridge and continuous steel, three cross Twin Towers double cable plane cable-stayed bridge, the main cable stayed part like dafusi bridge, continuous steel bridge with huanghuayuan bridge is the same. This is th