实际车辆荷载作用下的预应力混凝土连续梁桥动力响应分析及验证  

DYNAMIC RESPONSE ANALYSIS AND VERIFICATION OF PC CONTINUOUS BEAM BRIDGE UNDER ACTUAL VEHICLE LOAD

作　　者：王巍[1] 赵建峰[1] 

机构地区：[1]浙江交通职业技术学院,杭州311112

出　　处：《工业建筑》2014年第7期73-78,共6页Industrial Construction

基　　金：浙江省交通运输厅科技项目(2011H10)

摘　　要：以一座三跨单箱单室预应力混凝土连续箱梁桥为对象,利用车辆-桥梁耦合振动关系建立单梁车辆、桥梁运动微分方程,通过二者变形协调、相互作用力协调关系实现车辆-桥梁的耦合关系;修正了自编的桥梁动力响应计算程序,通过建立在桥梁上的高速弯板称重系统实现对实际过桥交通荷载的识别,并将识别出的实际车辆荷载信息输入已建立的桥梁动力响应计算程序,快速计算出在实际车辆荷载作用下的桥梁动力响应,并利用ANSYS软件进行静力验证,用实际过桥车流产生的动应变进行动力验证。Taking a three-span prestressed concrete continuous box girder bridge as a research object ,the vehicle and bridge differential equations of motion of single beam were established using vehicle -bridge coupling vibration relationship which was built through compatible relationship of deformation and force between vehicle and bridge . Using the WIM system installed on bridge ,the actual traffic load moving on bridge was efficiently identified ,which was taken as vehicle load information inputting into updated self-developed bridge dynamic response calculation program . The bridge dynamic response under actual vehicle load can be calculated by the program quickly ,and the calculation result has been verified statically and dynamic verification has been done using ANSYS software and bridge dynamic strain response under actual traffic flow ,respectively .

关 键 词：实际车辆荷载 耦合振动 动力响应 验证 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]