土木工程与管理学报2011，Vol.28Issue(3)：206-211,6.
移动荷载作用下桥梁动态响应的波谱单元法
Spectral Element Method for Bridges Subjected to Moving Loads
摘要
Abstract
The traditional spectral element method (SEM) is limited to structures subjected to loads with fixed positions. The present paper proposals an extended spectral element method for dynamic analysis of bridges subjected to moving loads. Those moving loads were equivalent to fixed concentrated node forces by integrating the shape function in SEM based on the principle of virtual work. The equivalent node forces were then used to calculate the dynamic responses of bridges in frequency domain by SEM. Finally, numerical results obtained from SEM were compared with those from Newmark method, precise integration method (PIM) and analytical solution. The results show that the extended SEM can effectively calculate the response of bridges subjected to moving loads. The number of elements can greatly decrease to improve the computational efficiency while high accuracy can be obtained.关键词
移动荷载/桥梁/频域/形函数/波谱单元法/动态响应Key words
moving loads/ bridge/ frequency domain/ shape function/ spectral element method (SEM) / dynamic analysis分类
建筑与水利引用本文复制引用
张俊兵,朱宏平,王丹生..移动荷载作用下桥梁动态响应的波谱单元法[J].土木工程与管理学报,2011,28(3):206-211,6.基金项目
国家杰出青年科学基金(50925828) （50925828）
国家自然科学基金(50778077) （50778077）
