刚性吊杆系杆拱桥空间稳定性分析方法

Analysis of Space Stability of Rigid Suspender and Tied-arch Bridges

以某下承式刚性吊杆系杆拱桥为实例,利用空间有限元程序对其空间稳定性进行分析。对刚性吊杆稳定性分析建模的四种模拟方案进行了具体分析计算。结果表明,不同模拟方案的计算结果相差很大,分析了差异的原因,提出了正确的分析方法。

Taking a through bridge with rigid suspender and tie-arch for example, the space stability is analyzed by means of finite element program. The four simulation schemes on the stability of rigid suspender are calculated in details. It is shown that the results from calculation are of great difference in simulation programs. Reasons for such difference are analyzed and correct methods proposed in this paper.