钢管混凝土柔性系杆拱桥施工阶段的静力计算分析

Calculation and Analysis of Static Force in Construction Stage of Concrete-filled Steel Tubular Flexible Tied Arch Bridge

以烟台养马岛大桥为工程背景,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,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,因而是可行的,其计算结果可以作为施工监测分析的重要参考。

Taking Yangmadao Bridge in Yantai City for example, give an analysis and calculation on in-construction static force of concrete-filled steel tubular flexible tied arch bridge through Finite Element Method. Give the key points and edge conditions of Finite element modeling. Describe how the displacement and stress of arch rib, tension of suspender and tie bar varies with the progress of construction. The outcome of calculation reveals the algorithm of static force is roughly consistent with the mechanical property of freely supported arch bridge bears, and therefore practicable to be an important reference for construction monitoring.