高速铁路高架桥支座的空间地震反应分析

3-D earthquake response analysis of bearings of high speed railway viaduct

首先,概述了国内高速铁路桥梁支座的应用,阐述了铁路桥梁橡胶支座的动静力性能,提出了构建橡胶支座本构关系的原则。随后,建立了一个实际高架桥结构的计算图式和有限元三维分析模型;最后,用大型结构化分析程序NASTRAN对板式橡胶支座与盆式橡胶支座条件下的高架桥空间地震反应进行了分析,并得出了一些有益的结论。

Firstly, the application of domestic rubber bearings of high speed railway bridges is introduced. Static and dynamic characteristics of rubber bearings of railway bridges are explained and their constitutive relation are determined. Then, a computing graph of a real viaduct structure and a three-dimensional finite element model are set up. Finally, 3-D earthquake response of plate rubber bearings and basin rubber bearings of viaduct are analysed by using NASTRAN structural program and some useful conclusions are drawn.