预应力混凝土斜拉桥调索设计新方法

New Methods for Cable Adjustment Design of Prestressed Concrete Cable-stayed Bridge

综合分析了当前各主要调索方法的流程及利弊后,指出了分阶段施工的悬臂浇筑预应力混凝土斜拉桥内力状态无法逼近一次合理成桥状态,进而提出预应力混凝土悬臂浇筑斜拉桥可不进行合理成桥状态分析,直接考虑施工阶段进行正装调索设计的新理念。

By comprehensively analyzing the current processes,advantages and disadvantages of the main cable adjustment methods,it is pointed out that the internal force state of the cantilever cast prestressed concrete cable-stayed bridge cannot be approached to the state of a reasonably bridge formation in a staged construction.And then it is not necessary to carry out the state analysis of a reasonable bridge formation for the prestresssed concrete cantilever cast cable-stayed bridge.The new concept of directly formal cable adjustment design in the construction stage is considered.