桥梁加固改造设计技术研究  

Research on Design Technology of Bridge Reinforcement&Reconstruction

作　　者：王盼 王莹 WANG Pan;WANG Ying(Hubei Urban Construction Design Institute Co.,Ltd.,Wuhan 430051,China;Hubei Transportation Planning&Design Institute Co.,Ltd.,Wuhan 430051,China)

机构地区：[1]湖北省城建设计院股份有限公司,湖北武汉430051 [2]湖北省交通规划设计院股份有限公司,湖北武汉430051

出　　处：《中国市政工程》2021年第3期98-101,128,129,共6页China Municipal Engineering

摘　　要：为解决既有钢筋混凝土刚构桥承载力不足及交通量饱和的问题,以罗田县巴源大桥为研究对象,采用有限元计算和检测技术方法,获得桥梁关键部位现有承载力,在此基础上运用增大截面法和粘贴钢板法对桥梁进行加固设计,并提出桥梁拼宽技术手段。实践结果表明,运用技术方法对桥梁进行加固和拼宽后,桥梁抗力明显提升,承载力、裂缝、跨中挠度等关键力学性能指标均满足规范要求,交通拥堵得到极大缓解。To solve the problem of insufficient bearing capacity&traffic saturation of existing reinforced concrete rigid frame bridge,taking Bayuan Bridge in Luotian as the research object,the existing bearing capacity of key parts of the bridge is obtained by means of finite element calculation&detection technology.On this basis,the bridge is strengthened by the method of increasing section&pasting steel plate,and the technical means of bridge widening are proposed.The practice results show that after the bridge is strengthened&widened by the technical methods,the bridge resistance is significantly improved,the key mechanical performance indexes such as bearing capacity,cracks,mid span deflection can meet the requirements of the specification,and the traffic volume is greatly alleviated.

关 键 词：混凝土桥梁 有限元计算 承载力 加固设计 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]