斜拉桥顶推施工法

湖南衡山湘江公路大桥主桥设计为斜拉桥和连续梁,采用两岸双向顶推方法施工。通过设置临时墩,将通航主跨转化为顶推跨径,待箱梁预制、顶推到位后,浇注索塔、挂索、张拉斜拉索,拆除临时墩,完成连续梁到斜拉桥的体系转换过程。项推法施工斜拉桥,工艺比较简单,为扩大顶推法在大跨径桥梁中的应用进行了有益的探索

Top pushing construction method for cable-stayed bridges

The main bridge of Hunan Hengshan Xiangjiang Highway Bridge is designed as a cable-stayed bridge and continuous girder, which is constructed by two-way jacking method on both sides of the bridge. By setting up temporary piers, the navigable main span is transformed into a jacking span, and when the box girders are prefabricated and jacked in place, the towers, cables and cable ties are poured, the temporary piers are removed, and the conversion of the continuous girder to the cable-stayed bridge system is completed. Item push method construction cable-stayed bridge, the process is relatively simple, to expand the top push method in the application of large-span bridges carried out a useful exploration!