钢管混凝土柔性系杆拱桥施工阶段的静力计算分析

Statics Computing Analysis of Pipe Concrete in Soft Pole Arch Bridge Construction

以某大桥为工程背景,采用空间有限元分析方法,对下承式钢管混凝土简支柔性系杆拱桥进行了施工阶段的静力分析与计算;介绍了该类型桥梁结构施工阶段有限元模型的建模要点及其边界条件,并分析了拱肋的位移、应力以及吊杆、系杆的拉力等随施工阶段变化的规律.计算结果表明,该施工阶段静力计算方法较为符合简支拱桥各个施工阶段的受力特点,是可行的,其计算结果可以作为施工监测分析的重要参考.

Taking the construction of a certain bridge as an example, the analysis of limited space element being adopted, the analysis and computing statics in the construction stage for the pipe concrete of the soft pole arch bridge are conducted. It introduces the main points of limited element mould and its bounder condition. It analyzed the arch support position moving, the stress and the suspended pole and the pole pulling force and their changes in the construction. The computing result shows that the statics computing is the foundation of construction. This computing result can be served for the important reference in the monitoring in construction.