已有建筑物对基坑开挖的影响分析  

Analysis of the influence of existing buildings on excavation of foundation pit

作　　者：孙广利[1] 刘卫 SUN Guang-li;LIU Wei(School of surveying and mapping engineering,Jilin Jianzhu university,Changchun 130118,China)

机构地区：[1]吉林建筑大学测绘与勘查工程学院,长春130118

出　　处：《吉林建筑大学学报》2021年第3期28-32,共5页Journal of Jilin Jianzhu University

摘　　要：以某基坑开挖为研究背景,分析已有建筑物对基坑开挖在深度的位移与水平距离之间的相互关系.运用三维数值模拟研究已有建筑物在基坑开挖过程中应力、位移等相关物理特性,通过模拟基坑开挖与已有建筑物在10.00 m,20.00 m,30.00 m,40.00 m,50.00 m的不同水平距离,得出建筑物与基坑开挖距离之间的关系曲线.结果表明,已有建筑物与基坑开挖距离在10.00 m~30.00 m时对基坑开挖产生的位移变化最大,而在距离基坑开挖30.00 m以后时对基坑产生的影响逐渐减小.Taken a certain foundation pit excavation as the research background,the relationship between the depth displacement and horizontal distance of the existing building to the foundation pit excavation is analyzed.Used three-dimensional numerical simulation to study the related physical characteristics of the stress and displacement of existing buildings during the excavation process of foundation pits,and simulate the excavation of foundation pits and existing buildings at 10.00 m,20.00 m,30.00 m,40.00 m,50.00 m,the relationship curve between the building and the excavation distance of the foundation pit is obtained.The results of simulation analysis show that when the excavation distance between the existing building and the foundation pit is 10.00 m~30.00 m,the excavation of the foundation pit has the largest displacement change,and the excavation of the foundation pit is 30.00 m after the excavation.The impact of the pit gradually decreases.

关 键 词：已有建筑物 基坑开挖 位移 水平距离 

分 类 号：TU435[建筑科学—岩土工程]