移动荷载作用下大跨悬索桥动态影响因素分析

研究移动荷载下大跨悬索桥动态影响因素。与整个桥长相比假定悬索空间很小，因此基于桥的连续模型进行分析。借助于连续分布函数描述梁、塔和悬索系统力的交互作用。采用直接综合方法解决控制平衡方程，对位移和应变变量动态影响因素建议采用无量纲形式进行数值量化。此外，为了量化评估桥的变形和移动荷载耦合影响，分析聚焦在通常被忽视的向心和Coriolis力的非标准条件。

Dynamic Impact Analysis of Long Span Cable-Stayed Bridges Under Moving Loads

The aim of this paper is to investigate the dynamic response of long span cable-stayed bridges subjected to moving loads. The analysis is based on a continuum model of the bridge,in which the stay spacing is assumed to be small in comparison with the whole bridge length. As a consequence,the interaction forces between the girder,towers and cable system are described by means of continuous distributed functions. A direct integration method to solve the governing equilibrium equations has been utilized and nu...