考虑交通荷载的简支梁桥支座顶升更换数值模拟分析  

NUMERICAL SIMULATION OF SIMPLY SUPPORTED BEAM BRIDGE JACKING FOR BEARING REPACEMENT CONSIDERING TRAFFIC LOAD

作　　者：涂昊 冯岩 王燕华[2] 李慧乐[2] TU Hao;FENG Yan;WANG Yanhua;LI Huile(Center of Wuyi Highway and Transportation Management,Zhejiang Wuyi 321200,China;School of Civil Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]武义县公路与运输管理中心,浙江武义321200 [2]东南大学土木工程学院,南京211189

出　　处：《低温建筑技术》2021年第4期64-67,共4页Low Temperature Architecture Technology

基　　金：浙江省公路与运输管理中心科技计划项目(2019H05)。

摘　　要：支座的性能直接影响桥梁结构的安全性和耐久性,对于支座损坏严重桥梁进行不中断交通下的支座更换十分有必要。采用ABAQUS对一座5m×20m简支空心板梁桥进行了逐墩同步顶升、横向不同步顶升等工况的有限元模拟,分析在交通荷载作用下顶升位移对桥梁应力的影响规律。确定在应力不超限的情况下,同步顶升方式的最大位移和非同步顶升的最大位移差,为类似桥梁不中断交通顶升更换支座提供参考和依据。The bridge bearings are of such great importance to the safety and durability of the bridge that it is necessary to replace the bearings for the bridges with serious bearing damage under traffic load.Herein,based on a 5×20m simply supported hollow slab bridge,ABAQUS was employed to simulat the jacking in longitudinal single pier and transverse synchronization,jacking in longitudinal span by span,and jacking with transverse and longitudinal asynchronization.Furthermore,the relation between jacking displacement and stress were studied under vehicle load,lane load,and lane load with impact coefficient.Additionally,the maximum displacement under synchronous jacking and asynchronous jacking were obtained,which may serve as references for the jacking of simply supported hollow slab bridges under traffic load.

关 键 词：简支空心板梁 有限元模拟 交通荷载 最大顶升位移 

分 类 号：TU311.41[建筑科学—结构工程]