长春市某深基坑桩锚支护数值模拟分析  

Numerical simulation analysis of pile anchor support for a deep foundation pit in Changchun city

作　　者：张丽[1] 陈涛 张豪 ZHANG Li;CHEN Tao;ZHANG Hao(School of geomatics and prospecting 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》2024年第3期57-62,共6页Journal of Jilin Jianzhu University

摘　　要：桩锚支护在深基坑工程开挖过程中具有较好的支护效果,使用有限差分软件FLAC3D6.0对深基坑进行各个工况的模拟具有重大意义。本文以长春某深基坑工程为研究对象,使用FLAC3D6.0有限差分软件进行三维建模,模拟基坑开挖过程中产生的地表水平位移、竖直沉降、坑底隆起以及围护结构的位移等,并做出总结。结果表明,围护结构在各工况下的水平位移随着距基坑边缘距离变大而逐渐减小;基坑水平位移最大值一般出现在基坑中间;坑底隆起值的变化与围护结构水平位移呈正相关;模拟值与实测值的变化规律基本相同,验证了本次模型的准确性。The pile anchor support has a good support effect in the process of deep foundation pit excavation.It is of great significance to use the finite difference software FLAC3D6.0 to simulate the various working conditions of deep foundation pit.Taking a deep foundation pit project in Changchun as the research object,this paper uses FLAC3D6.0 finite difference software to carry out three-dimensional modeling,simulate the horizontal displacement,vertical settlement,pit bottom uplift and the displacement of the enclosure structure during the excavation of the foundation pit,and make a summary.The results indicate that the horizontal displacement and distance from the edge of the foundation pit of the retaining structure gradually decrease under various working conditions;The maximum horizontal displacement of the foundation pit generally occurs in the middle of the foundation pit;The variation of the uplift value at the bottom of the pit is positively correlated with the horizontal displacement of the enclosure structure;The variation pattern between simulated and measured values is basically the same,which verifies the accuracy of this model.

关 键 词：数值模拟 基坑开挖 桩锚支护 FLAC3D 

分 类 号：TU753[建筑科学—建筑技术科学]