铁路小半径连续弯箱梁造桥机施工

Construction of Sharp Radius Continuous Curved Box Girder Railway Bridge with Overhead Launching Gantry

以兰武二线河口南黄河特大桥主桥为例,介绍了铁路小半径连续弯箱梁造桥机节段拼装湿接头法施工工艺特点及空间预应力索的摩阻试验和受力体系的控制。

With reference to the main bridge of Hekounan Huanghe River Bridge on the Second Lanzhou-Wuwei Railway, this paper describes the construction technology characteristics of the sharp radius continuous curved segmental box girder railway bridge with wet joints constructed with overhead launching gantry, the friction tests for three-dimensional prestressing tendons and also the control of the stressing system of the bridge.