软土地质深基坑变形控制要点探讨  

Study on the Key Points of Deformation Control of Deep Foundation Pit in Soft Soil

作　　者：杨树芳 高勒德其 白璐 YANG Shu-fang;Gaoledeqi;BAI Lu

机构地区：[1]内蒙古自治区交通运输科学发展研究院,内蒙古呼和浩特010051 [2]中交中南工程局有限公司,湖南长沙410000 [3]内蒙古交通集团有限公司项目管理分公司,内蒙古呼和浩特010010

出　　处：《内蒙古公路与运输》2024年第6期22-27,共6页Highways & Transportation in Inner Mongolia

摘　　要：深基坑支护技术是解决基坑变形的重要手段。为研究软土地质区深基坑变形控制要点,文章以上海地铁15号线元江路站施工为研究背景,基于软土地质深基坑变形特点,从基底隆起、围护结构变形和墙后土体沉降三方面系统研究了深基坑变形的机理,同时对深基坑变形控制进行了全面分析,并从基坑围护、地基加固、基坑降水、土方开挖及支撑架设、结构施工角度提出了软土地质深基坑的变形控制措施,以为软土地质区及类似区域深基坑支护施工提供技术参考。Deep foundation pit support technology is an important means to solve the deformation of foundation pit.In order to study the key points of deep foundation pit deformation control in soft soil geological areas,this paper takes the construction site of Yuanjiang Road Station of Shanghai Metro Line 15 as the research background.Based on the deformation characteristics of deep foundation pit in soft soil geology,the deformation mechanism of deep foundation pit is systematically studied from three aspects:base uplift,deformation of retaining structure and settlement of soil behind the wall.At the same time,a comprehensive analysis of the deformation control of deep foundation pit is carried out,and deformation control measures for deep foundation pit in soft soil geology are proposed from the perspectives of foundation pit retaining,foundation reinforcement,foundation pit dewatering,earthwork excavation and support erection,and structural construction.The research results provide a technical reference for deep foundation pit support construction in soft soil areas and similar areas.

关 键 词：软土 深基坑 变形 控制措施 

分 类 号：U412.22[交通运输工程—道路与铁道工程]