多跨钢结构人行吊桥桥面板的等效模型研究  

Study of panel equivalent model of multi-span steel pedestrian suspension bridge

作　　者：胡元伦 盛宏玉[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2015年第10期1392-1395,1416,共5页Journal of Hefei University of Technology：Natural Science

基　　金：合肥工业大学产学研校企合作资助项目(13-279)

摘　　要：文章利用有限元分析软件ANSYS对多跨钢结构折形人行吊桥进行了等效模型的分析。根据与原结构模型动力特性尽可能保持一致的等效原则,在建立桥面板的等效模型时,应与原结构的抗弯刚度、转动惯量和线密度保持一致。对原结构与2种等效模型进行了模态分析和动力分析,计算结果表明,等效模型可以很好地模拟原结构的动力特性,并能大大减少计算工作量。The equivalent model analysis for multi-span steel zigzag pedestrian suspension bridge is presented by using the finite element analysis software ANSYS. The simplified equivalent model is set up according to the equivalent principle that the dynamic characteristics of equivalent model and origi- nal structure model should maintain consistent as far as possible, hence the bending stiffness, moment of inertia and linear density of the equivalent bridge panel and the original structure should be consist- ent. The modal and dynamic analyses are carried out for two equivalent models and original structure. The calculation results show that the equivalent model can simulate the dynamic characteristics of the original structure commendably and reduce the computational work efficiently.

关 键 词：等效模型 有限元分析 模态分析 动力分析 

分 类 号：U443.38[建筑科学—桥梁与隧道工程] O242.21[交通运输工程—道路与铁道工程]