支护桩上装配式钢栈桥对深基坑影响的数值模拟验算分析  

Numerical Simulation and Checking Analysis of Infl uence of Fabricated Steel Trestle on Support Piles on Deep Foundation Pit

作　　者：王铭浩 王文通 WANG Minghao;WANG Wentong(China Construction Second Engineering Bureau Co.,Ltd.,Beijing 100060,China)

机构地区：[1]中国建筑第二工程局有限公司,北京100060

出　　处：《建筑施工》2021年第12期2627-2629,共3页Building Construction

摘　　要：郑州银行金融服务中心项目拟在基坑北侧支护桩上安装长72 m装配式钢栈桥,为检测钢栈桥对深基坑的影响,保障钢栈桥顺利安装及深基坑的正常使用,基于Midas有限元模拟软件进行三维建模,选用FLAC3D有限差分模拟软件进行各工况计算,对长72 m钢栈桥及其北侧、南侧基坑范围进行三维仿真模拟,最大程度使计算结果贴近实际情况。计算结果表明:基坑与钢栈桥的相互影响均在控制范围以内,钢栈桥满足安装要求和深基坑的正常使用。The financial service center project of Bank of Zhengzhou plans to install a 72 m long fabricated steel trestle on the support piles on the north side of the foundation pit.In order to detect the influence of steel trestle on deep foundation pit and ensure the smooth installation of steel trestle and the normal use of deep foundation pit,3D modeling is carried out based on MIDAS finite element simulation software.FLAC3D finite difference simulation software is selected to calculate various working conditions,and 3D simulation is carried out for the 72 m long steel trestle and its north and south foundation pits,so as to make the calculation results close to the actual situation to the greatest extent.The calculation results show that the interaction between foundation pit and steel trestle is within the control range,and the steel trestle meets the installation requirements and the normal use of deep foundation pit.

关 键 词：钢栈桥 深基坑 数值模拟 基坑开挖 

分 类 号：TU753[建筑科学—建筑技术科学]