论文部分内容阅读
介绍了曲塔混合梁斜拉桥的结构形式、施工仿真分析方法和相应的计算内容。为保证施工过程中结构的安全以及成桥后的线形要求,针对其结构特点和施工方法,考虑了温度、收缩徐变以及各种施工荷载,进行了施工过程的仿真分析。给出了施工控制所需要的各种指标,如成桥阶段主梁和索塔的应力和位移以及斜拉索的索力。仿真分析结果表明,斜拉桥主梁和索塔在施工过程中的应力均能满足规范要求。
This paper introduces the structure, construction simulation analysis method and corresponding calculation contents of the curved tower cable-stayed bridge. In order to ensure the safety of the structure during the construction and the linear requirements after the bridge, according to its structural features and construction methods, the temperature, shrinkage and creep as well as various construction loads are considered, and the simulation analysis of the construction process is carried out. The various indexes needed for construction control are given, such as the stress and displacement of the main girder and pylon in the bridging stage and the cable force of the stay cable. The simulation results show that the stress of girder and pylon of cable-stayed bridge can meet the requirements of the standard during construction.