摘要
在某市地铁12号线车站基坑工程中,根据工况建立模型,探索随着基坑开挖深度增大,围护结构水平位移变化规律,并分析基坑周围地表沉降变化规律。研究结果表明,随着开挖深度增大,地下连续墙水平位移逐渐增大,随着地下连续墙深度增大,连续墙水平位移先增大再减小。随着距基坑边距离增大,地表土体沉降先增大再减小,随着基坑开挖深度增大,地表土体沉降逐渐增大。在基坑开挖工程中,建议对基坑标准段长边中点区域土体进行灌浆加固,同时增大该区域围护结构强度或厚度,以减小因基坑开挖产生的变形。
In the foundation excavation project of a subway station on Line 12 in a certain city,a model was established based on the working conditions,as the depth of the foundation excavation increased,the variation law of the horizontal displacement of the retaining structure was explored,and the variation law of the ground surface settlement around the foundation excavation was analyzed.The result shows that,as the excavation depth increases,the horizontal displacement of the underground continuous wall gradually increases.As the depth of the underground continuous wall increases,the horizontal displacement of the continuous wall first increases and then decreases.As the distance from the edge of the foundation excavation increases,the ground surface soil settlement first increases and then decreases.As the depth of the foundation excavation excavation increases,the ground surface soil settlement gradually increases.In the foundation excavation project,it is recommended to carry out grouting reinforcement of the soil in the midpoint area of the long side for the standard section,and at the same time increase the strength and the thickness of the retaining structure in this area to reduce the deformation.
作者
唐江
张俊杰
TANG Jiang;ZHANG Junjie(Ningbo Metallurgy Investigation Design&Research Co.,Ltd.,Ningbo,Zhejiang 315199,China)
出处
《施工技术(中英文)》
2025年第5期104-109,共6页
Construction Technology
关键词
地铁车站
基坑
软土地层
沉降
变形
subway station
foundation excavation
soft soil
settlement
deformation
