钢管混凝土拱桥施工控制原理与控制分析算法研究

Study on Construction Control Principle and Arithmetic of CFST Arch Bridge

介绍了钢管混凝土拱桥的施工方法与受力特点。就拱肋安装阶段的斜拉扣索索力、轴线线形控制技术、弦杆混凝土浇筑过程中拱脚截面混凝土应力以及桥道系施工等过程的施工控制原理及控制方法作了阐述 ,给出详细算法。首次提出用应力影响线作应力调整计算的方法 ,配合自编后处理程序 ,能方便地计算出弦杆混凝土浇筑过程中所需应力调整值 ,最后用一个实桥简要介绍算法。

The construction control principles and mechanics action of CFST arch bridge were introduced in this paper firstly Then the construction principle and techiques, including cable force,arch rib′s axis shape control in segment erecting, the section concrete stress of arch foot in the process of pouring the concrete into steel tube and deck system in construction, were discussed The detailed arithmetic was given for the key stage The method of stress influence line for stress adjustment was put forward for the first time The value of stress adjustment during construction in steel tube concrete pouring could be calculated convincely, using the post?processed program developed by the authors Finally, an example of actual bridge was given to interpret the method and arithmetic