不规则刚构桥车致横向振动响应研究  

An analysis of irregular rigid-frame bridge's responses to the lateral vibrction caused by moving vehicular loads

作　　者：王英[1] 李又婷 彭丽[1] 高宇[1] 邓韬[1] 段志军[1] 阴霄剑 陈建平[1] 

机构地区：[1]上海师范大学建筑工程学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2016年第1期103-107,共5页Journal of Shanghai Normal University(Natural Sciences)

基　　金：国家自然科学基金(51308338);上海师范大学一般项目(SK201421);上海师范大学建筑工程学院"大学生创新科研孵化计划"项目;上海市大学生创新项目

摘　　要：车辆荷载引起不规则刚构桥横向振动,可能影响舒适度,甚至带来结构的安全问题.采用有限元分析方法,运用该桥实测车致横向振动加速度数据作为激励源,研究了不规则刚构桥车致横向振动性能,主要包括箱梁跨中截面,主墩顶、墩底等关键截面位置的位移及弯矩响应.研究结果表明;对于横向刚度相对较小的高墩大跨桥梁结构,车致横向振动不容忽视;对于异高桥墩刚构桥,高墩横向振动响应比低墩剧烈.The lateral vibration responses of an irregular rigid-frame bridge caused by moving vehicular loads may affect the riding comfort,even cause safety problems. In this paper,using the lateral acceleration waves induced by moving vehicles obtained by the health monitoring system of the irregular rigid-frame bridge as exciting source,the responses to lateral vibration caused by moving vehicles were studied using the finite element method,including the lateral displacement and moment of three key cross-sections.The results indict that the lateral vibration responses of a high-pier and long-span bridge structure can not be ignored. As to a rigid-frame bridge with unequal height of piers,the lateral vibration responses caused by moving vehicular loads of high piers are greater than the low pier＇s.

关 键 词：车致横向振动 不规则刚构桥 加速度波 有限元法 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]