大悬臂预应力混凝土箱梁桥拼宽方案受力分析  

Stress Analysis of the Widening Scheme of Large Cantilever Prestressed Concrete Box Girder Bridge

作　　者：杨红成 杨晔 陆耀清 YANG Hongcheng;YANG Ye;LU Yaoqing(JSTI Group Co.,Ltd.,Nanjing 210019,China)

机构地区：[1]苏交科集团股份有限公司,南京210019

出　　处：《现代交通技术》2024年第1期1-4,40,共5页Modern Transportation Technology

摘　　要：以沪武高速公路太仓至常州段的望虞河大桥改造工程为背景,研究大悬臂预应力混凝土箱梁的拼宽方案,利用Midas软件建立全桥的有限元模型,分析桥梁在活载、基础沉降、收缩徐变作用下的结构受力特点,总结各拼宽方案的关键问题,并提出施工建议。Based on the reconstruction project of Wangyuhe Bridge on Taicang-Changzhou section of Shanghai-Wuhan Expressway,the widening scheme of large cantilever prestressed concrete box girder was studied.Midas software was used to establish the finite element model of the whole bridge,and the structural stress characteristics of the bridge under the influence of live load,foundation settlement,shrinkage and creep were analyzed.Key problems of each widening scheme were summarized,and the construction suggestions were given.

关 键 词：拼宽 大悬臂 混凝土箱梁 横向预应力 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]