综合交通枢纽深大基坑开挖对邻近机场塔台的影响研究  

Influence of Deep and Large Foundation Excavation of Integrated Transportation Hub on Adjacent Airport Tower

作　　者：王华平 莫凡[1] 林忠和[1] 徐前卫[2] 颜慧 林细桃 WANG Huaping;MO Fan;LIN Zhonghe;XU Qianwei;YAN Hui;LIN Xitao(China Construction Eighth Engineering Bureau Co.,Ltd.,Shenzhen,Guangdong 518038,China;College of Transportation Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]中国建筑第八工程局有限公司,广东深圳518038 [2]同济大学交通运输工程学院,上海201804

出　　处：《施工技术（中英文）》2023年第14期76-83,共8页Construction Technology

基　　金：广西重点研发计划(桂科AB21220012)。

摘　　要：为研究深大基坑开挖对邻近建筑物的影响,确保施工安全,以南宁机场综合交通枢纽深大基坑工程A4区为研究对象,建立有限元数值模型,模拟实际工况下的基坑开挖全过程对邻近机场塔台建筑物的影响,将模拟结果和实际监测结果进行对比,验证模型参数选取的合理性和准确性。为研究不同开挖顺序对塔台的影响,增加2种数值模拟开挖工况,进行基坑开挖施工工况综合比选。模拟结果表明,采用跳仓开挖方式更有利于控制周边地层及塔台变形。In order to study the influence of deep and large foundation excavation on the adjacent buildings and ensure construction safety,a finite element numerical simulation model was established to study the A4 area of the deep and large foundation excavation project of Nanning Airport integrated transportation hub,and the influence of the whole process of foundation excavation on the adjacent airport tower buildings under actual working conditions is simulated,and the simulation results were compared with the actual monitoring results to verify the reasonableness of the model parameters selection and accuracy.In order to study the influence of different excavation sequences on the tower,two excavation conditions are added and a comprehensive selection of foundation excavation construction conditions is carried out.The simulation results show that the use of sequence excavation is more conducive to the control of the surrounding strata and tower deformation.

关 键 词：机场 深基坑 塔台 沉降 数值模拟 监测 

分 类 号：TU753[建筑科学—建筑技术科学]