摘要
为解决混凝土连续箱梁桥超高顶升施工难题,研究其顶升过程中的结构力学特征,以国内最大顶升高度的厦门市仙岳路高架桥改造工程为依托,采用MIDAS/Civil有限元软件建立三维数值模型,确认各种荷载及计算工况后,结合施工方案分析顶升前、正常顶升和顶升点失效等10种不同工况下,梁体主要构件和反力梁的应力分布。
In order to solve the problem of super-high jacking construction of concrete continuous box girder bridge,the structural mechanical characteristics of the box girder bridge in the process of jacking are studied,a three-dimensional numerical model is established by using MIDAS/Civil finite element software based on the reconstruction project of Xianyue Road Viaduct with the largest jacking height in Xiamen. The main structures of the girder under 10 different working conditions,such as before jacking,normal jacking and failure of jacking point,the stress distribution of the main components of the girder and reaction girder are analyzed.
作者
林四新
LIN Sixin(CCCC Third Harbor Engineering Co.,Ltd.Xiamen Branch,Xiamen,Fujian 361003 ,China)
出处
《施工技术》
CAS
2019年第18期125-129,共5页
Construction Technology
基金
厦门市科技计划项目(3502Z20183043)
厦门市建设局科技项目(XJK-2019-1-4)
关键词
桥梁工程
连续箱梁
顶升
有限元分析
应力
bridges
continuous box girder
jacking
finite element analysis
stresses
