摘要
文中结合某基坑支护工程施工实践,分析了偏压深基坑支护结构自身变形及对周边地形沉降的影响。结果表明,连续墙侧向位移与基坑开挖深度呈现三角形变化特征,与开挖深度呈先正相关后负相关的演变趋势;整体周边沉降与距基坑距离呈先正相关后负相关的演变规律,表现为凹槽形状沉降趋势;周边建筑高层自身沉降与基坑开挖深度呈正相关;本工程基坑连续墙最大侧移约15 mm,其中最大临近建筑高层沉降量达到5 mm,完全满足规范要求。
Based on the construction practice of a foundation pit support project,this paper analyzes the deformation of the support structure and the settlement of the surrounding terrain.The results show that the lateral displacement of continuous wall has a triangular change with the excavation depth,and a positive and negative correlation with the excavation depth.The overall peripheral settlement and the distance from the foundation pit showed a first positive and then negative correlation,which showed the settlement trend of groove shape.There is a positive correlation between the setlement of high-rise buildings and the excavation depth of foundation pit.In this project,the maximum lateral displacement of the foundation pit continuous wall is about 15mm;The settlement of the largest adjacent high-rise building reaches 5mm,which fully meets the requirements of the code.
作者
丁小可
Ding Xiaoke(Henan Building Materials Geological Engineering Survey Institute Co.Ltd.,Xinyang,Henan 464000)
出处
《江西建材》
2023年第10期189-191,共3页
Jiangxi Building Materials
关键词
偏压深基坑
支护结构
变形量
沉降
Biased deep foundation pit
Supporting structure
Deformation
Sedimentation
