圆端中空截面刚构桥考虑行波效应的弹塑性时程分析  

Elastic-plastic Time History Analysis about the Round-ended Hollow Section Rigid Frame Bridge by Considering Wave Passage Effect

作　　者：黄方[1] 李之达[2] 王爽 

机构地区：[1]海军工程大学理学院,武汉430033 [2]武汉理工大学交通学院,武汉430063 [3]武汉隆方工程技术有限公司,武汉430043

出　　处：《武汉理工大学学报（交通科学与工程版）》2014年第5期1176-1178,共3页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(批准号:51072149)

摘　　要：采用弹塑性纤维梁柱单元来考虑某大跨刚构桥的非线性地震响应,该桥桥墩为圆端中空截面,而目前国内对中空矩形截面墩、圆端中空截面墩的抗震延性能力研究甚少.参考日本桥梁抗震规范分别计算了沿切向和沿径向的核心混凝土有效侧向约束应力,采用Mander本构模型定义了墩身的材料非线性特性,并通过是否考虑行波效应得到了该桥在罕遇地震下较为合理的响应.In this paper,fiber beam-column element to take into account the nonlinear seismic response of a long-span continuous rigid frame bridge,the bridge piers are round-ended hollow sections,but in currently domestic the research about rectangular hollow piers and round-ended hollow piers on ductile seismic capacity is very few.The author referred to the seismic design of Japanese roadway specification to calculate the effective lateral confining stress on the core concrete along the tangential and the radial directions,thus used the mander model to define the material nonlinear characteristics of the pier,then by considering and does not consider the the wave passage effect the bridge obtained a more reasonable response under rarely earthquake.

关 键 词：行波效应 mander本构 弹塑性纤维梁柱单元 圆端中空截面墩 

分 类 号：TU2[建筑科学—建筑设计及理论]