桥梁结构抗震计算可视化系统研究  

RESEARCH ON BRIDGE SEISMIC ANALYSIS SYSTEM

作　　者：韦韩[1] 王克海[1] 李茜[1] 

机构地区：[1]交通部公路科学研究院,北京100088

出　　处：《工程力学》2008年第A01期198-202,208,共6页Engineering Mechanics

基　　金：西部交通建设科技项目(200231800028)

摘　　要：桥梁结构抗震计算可视化系统(Bridge Antiseismic System,简称BAS)是针对桥梁结构抗震分析的专用软件,具有界面友好的前后处理功能,能够建立桥梁结构的空间有限元模型,可运用桁架单元、索单元、梁单元、边界单元和板单元等进行桥梁结构的静力、反应谱和动力时程等分析。该文首先介绍该系统的整体架构及其功能特点,再详细介绍其建模的思路和优越性,以及系统的分析和后处理显示功能,最后对一个工程实例,分别在BAS、Midas和Sap2000中建模,对自振周期、自重内力、反应谱内力和动力时程分析内力等分别进行了比较,验证了程序的可靠性。Bridge Antiseismic System （BAS in abbreviation） is a software specifically designed for bridge seismic analysis, with functions of static analysis, response spectrum analysis and time history analysis. Spatial FEM model of bridge structures can be built with truss element, cable element, beam element, spring element and plate element. The overall features of BAS are firstly presented in this paper, and then the pre-process, analysis and post-process modules are discussed in details. Finally one practical bridge project is modeled in BAS, Midas and Sap2000 separately. The frequencies and the internal forces under self-weight, response spectrum and earthquake excitation are compared.

关 键 词：桥梁抗震分析 可视化 模板建模 空间有限元模型 动力分析 反应谱分析 

分 类 号：TU318[建筑科学—结构工程]