摘要
Abstract
In order to study the reliability of support structure design of super-large foundation pit,this paper takes a super-large deep founda-tion pit project as an example,and uses GEO5 software to conduct numerical simulation analysis of foundation pit,and compares it with the field monitoring data.The results show that after excavation,the maximum horizontal displacement of soil initially concentrated on the pile top,with the deepening of excavation and the application of prestressed anchor cable technology,the maximum displacement gradually transferred to 1/2 of the pile body.With the depth of foundation pit excavation,the internal soil uplifts,while the adjacent soil strengthened by pile row has a small uplift and begins to settle around the foundation pit,and the pile settlement gradually increases with the increase of excavation depth.During the excavation of foundation pit,the horizontal and vertical stress of the soil around the pile decreases gradually,while the stress distri-bution of the soil on the side wall of foundation pit changes little,showing stability.关键词
支护结构/数值模拟/锚索技术/现场监测Key words
Supporting structure/Numerical simulation/Cable technology/Field monitoring分类
建筑与水利
