砂土地层深基坑施工影响邻近既有管廊变形预测  

Deformation Prediction of Adjacent Existing Pipe Rack Influenced by Construction of Deep Foundation Pit in Sandy Stratum

作　　者：赵军[1] ZHAO Jun(China Railway 18th Bureau Group 4th Engineering Co.,Ltd.,Tianjin 300350,China)

机构地区：[1]中铁十八局集团第四工程有限公司,天津300350

出　　处：《路基工程》2024年第6期221-225,共5页Subgrade Engineering

摘　　要：结合石家庄东上泽地铁车站砂土地层基坑工程实测数据,建立数值计算模型,分析砂土场地中基坑开挖深度、相对位置、基坑变形等因素对既有管廊变形的影响,得到既有管廊的变形数据库,基于该数据库建立既有管廊水平位移的半经验理论预测方法,并通过大样本数据库验证其适用性。Based on the measured data of foundation pit project in sandy stratum of Dongshangze subway station in Shijiazhuang,a numerical calculation model was established to analyze the influence of excavation depth,relative position and foundation pit deformation on the deformation of existing pipe rack in the sandy soil site,and a deformation database of existing pipe rack was obtained.Based on this database,a semi-empirical theoretical prediction method for horizontal displacement of existing pipe rack was established.The applicability of the method is verified by a large sample database.

关 键 词：砂土 深基坑 既有管廊 多种工况 水平位移 模型预测 

分 类 号：U231.3[交通运输工程—道路与铁道工程]