单壁钢吊箱围堰在深水承台施工中的应用分析  

Application Analysis of Single Wall Steel Suspension Box Cofferdam in Deep Water Pile Cap Construction

作　　者：郑学涛 ZHENG Xuetao(China Railway Jian'an Engineering Design Institnte Co.,Ltd.,Shijiazhuang 050043,China)

机构地区：[1]中铁建安工程设计院有限公司,河北石家庄050043

出　　处：《国防交通工程与技术》2022年第4期52-54,47,共4页Traffic Engineering and Technology for National Defence

摘　　要：基贡戈-布西西大桥横跨维多利亚湖,湖水深约3~50 m,主桥桥墩采用单壁钢吊箱围堰进行承台施工。为保证主桥桥墩施工安全,建立MIDAS模型,针对钢吊箱围堰施工不同工况,分别对单壁钢吊箱围堰模板、内撑、抗剪键、预制底板、整体抗浮进行三维数值分析。数值模拟结果说明:结构整体变形较小,结构刚度、强度和抗浮稳定性符合临时结构要求。Kigongo-Busisi Bridge spans Lake Victoria and the lake depth is about 3~50 meters.The main bridge pier adopts single-wall steel box cofferdam for the pile cap construction.In order to ensure the construction safety of the main bridge pier,MIDAS model is established.Aiming at the different working conditions of steel suspension box cofferdam construction,the three-dimensional numerical analysis of single-wall steel suspension box cofferdam template,internal brace,shear key,precast floor and overall anti-floating are numerical analyzed with three dimensional model,respectively.The numerical simulation results show that the overall deformation of the structure is small,and the stiffness,strength and anti-floating stability of the structure meet the requirements of the temporary structure.

关 键 词：单壁钢吊箱围堰 深水区 数值分析 抗浮稳定性 变形 强度 刚度 

分 类 号：U443.162[建筑科学—桥梁与隧道工程] U443.2[交通运输工程—道路与铁道工程]