基坑开挖对紧邻建筑地基影响范围分析  

ANALYSIS OF INFLUENCE RANGE OF FOUNDATION PIT EXCAVATION ON ADJACENT BUILDING FOUNDATION

作　　者：刘亚莉 惠冰 周建滨 马明畅 王志国 Liu Ya-li;Hui Bing;Zhou Jian-bin;Ma Ming-chang;Wang Zhi-guo

机构地区：[1]山东省建设科技与产业化中心有限公司,济南250000 [2]山东省交通科学研究院,济南250104

出　　处：《建筑技术开发》2022年第19期156-158,共3页Building Technology Development

基　　金：山东省交通运输厅科技计划项目(2021B40)。

摘　　要：基坑开挖作为建筑物或构筑物重要的工序之一,具有重要的作用。分析基坑开挖区域工程地质与水文地质条件,采用理论分析与数值计算综合分析方法,开展基坑开挖对紧邻建筑地基影响范围分析。结果表明:基坑开挖影响范围为两倍开挖深度。施工完成后地基基础影响范围:施工增加荷载所产生的附加应力垂直向下传递。数值计算结果分析,拟建建筑物基坑开挖影响范围为距离坑顶边线0~11.1 m,潜在圆弧滑动面范围远小于基坑影响范围,开挖安全系数为1.84,满足基坑稳定性要求。Foundation pit excavation,as one of the important processes of buildings or structures,plays an important role.Based on the analysis of regional engineering geology and hydrogeology conditions of foundation pit excavation,the influence range of foundation pit excavation on adjacent building foundation is analyzed by means of comprehensive analysis of theoretical analysis and numerical calculation.The results show that the influence range of excavation is twice the excavation depth.After the completion of construction,the influence range of foundation:the additional stress generated by the construction increased load is transmitted vertically downward.According to the analysis of numerical calculation results,the influence range of foundation pit excavation of the proposed building is 0~11.1 m from the edge line of the top of the pit,and the potential arc sliding surface is much smaller than the influence range of the foundation pit.The excavation safety factor is 1.84,which meets the stability requirements of the foundation pit.

关 键 词：基坑开挖 紧邻建筑 地基影响 安全系数 

分 类 号：TU476[建筑科学—结构工程]