40m上承式钢板梁桥加固前后动力特性研究  

Dynamic Behavior Study of 40m-span Deck Steel Plate Girder Bridge Prior to and after Reinforced

作　　者：梁玉红[1] 苏木标[1] 顾理生[1] 

机构地区：[1]石家庄铁道学院大型结构健康诊断与控制研究所,河北石家庄050043

出　　处：《石家庄铁道学院学报》2006年第2期39-42,共4页Journal of Shijiazhuang Railway Institute

摘　　要：从理论上对钢板梁桥横向加固效果进行了定性分析,并应用大型有限元分析软件AN-SYS建立了加固前后桥梁结构的三维空间有限元模型。通过模态分析获得了加固前后结构前10阶自振频率和振型,并对几种方案的加固效果进行了定量分析,得出有意义的结论。Based on a qualitative analysis of the transverse reinforcement effect on the deck plate steel girder bridge, a 3-D space FEM of the bridge before and after reinforced is respectively established by using a large scale finite element program ANSYS. The ten free frequencies and modes of the bridge are obtained with subspace iterative method, and significant conclusions are obtained through quantitative analysis of the reinforcement effects.

关 键 词：钢板梁桥 加固 动力特性 频率 

分 类 号：U448.13[建筑科学—桥梁与隧道工程]