长江漫滩地貌对深大基坑支护体系影响研究  

Study on Influence of Yangtze River Floodplain Landform on Deep and Large Foundation Pit Support System

作　　者：陈欣泉 CHEN Xinquan(Shanghai Construction Real Estate Co.,Ltd.,Shanghai 200080,China)

机构地区：[1]上海建工房产有限公司,上海200080

出　　处：《建筑施工》2023年第7期1295-1298,共4页Building Construction

摘　　要：为探索软土地基区域基坑支护的新方法,以南京河西G68地块项目为例,进行了研究。在长江漫滩地貌土层上对开挖深度超过10 m的深基坑分别采用了钻孔灌注排桩+1道水平钢筋混凝土角撑+对撑体系,以及1道水平钢筋混凝土圆环支撑体系,并结合支护结构深层水平位移和周边环境沉降2个方面的监测数据验证了基坑支护体系的应用效果,可为今后处于此类地貌上的项目提供借鉴。In order to explore a new method of foundation pit support in soft ground area,a study was conducted on the project of Nanjing Hexi G68 site as an example.In the deep foundation pit with excavation depth over 10 m on the Changjiang River floodplain landform soil layer,drilled and grouted row pile with 1 horizontal reinforced concrete angle brace as well as counter brace system and 1 horizontal reinforced concrete circular brace system were adopted respectively,and the application effect of foundation pit support system was verified by combining the monitoring data of deep horizontal displacement of support structure and settlement of surrounding environment,which can provide reference for future projects on such landform.

关 键 词：长江漫滩 深大基坑 支护体系 位移 沉降 

分 类 号：TU753[建筑科学—建筑技术科学]