组合式支护结构在紧邻地铁深基坑工程中的应用  

Study on application of combined supporting structure in deep foundation pit adjacent to subway

作　　者：阮立龙 王立泰 Ruan Lilong;Wang Litai(Gansu Sixth Construction Group Co.,Ltd.,Lanzhou 730070,China)

机构地区：[1]甘肃第六建设集团股份有限公司,甘肃兰州730070

出　　处：《山西建筑》2023年第9期79-82,共4页Shanxi Architecture

基　　金：甘肃省住房和城乡建设厅科研项目(JK-2021-58);甘肃建投科技项目(JTKE-2020-14)。

摘　　要：组合式支护结构在开挖规模大、周边环境复杂的深基坑工程中得到了广泛应用。为研究组合式支护结构在紧邻地铁深基坑工程中的应用效果,采用排桩+预应力锚索+斜抛撑的组合支护结构,监测和分析基坑开挖过程中周围地层和支护结构的变形。研究发现“排桩+预应力锚索”为主、斜抛撑为辅的联合支护体系具有适用范围广、控制变形效果佳和施工简便快捷等众多优点,其设计和施工方法对同类工程具有较强的借鉴意义。The combined supporting structure has been widely used in deep foundation pit engineering with large excavation scale and complex surrounding environment.In order to study the application effect of the combined supporting structure in the deep foundation pit adjacent to the subway,the combined supporting structure of row pile+prestressed anchor cable+inclined cast support is adopted to monitor and analyze the deformation of the surrounding strata and the supporting structure during the foundation pit excavation.It is found that the combined support system of“pile row+prestressed anchor cable”as the main support and oblique cast support as the auxiliary support has many advantages,such as wide application range,good deformation control effect and simple and quick construction,and its design and construction methods have strong reference significance for similar projects.

关 键 词：地铁 深基坑 斜抛撑 联合支护 

分 类 号：TU753[建筑科学—建筑技术科学]