河南城建学院学报2018，Vol.27Issue(2)：56-60,5.DOI:10.14140/j.cnki.hncjxb.2018.02.009
某住宅楼基坑支护FLAC3D数值模拟分析
Numerical simulation analysis of foundation pit support in a residential building using FLAC3 D
徐孟龙 1王辉1
作者信息
- 1. 河南理工大学 土木工程学院,河南 焦作454000
- 折叠
摘要
Abstract
In order to explore the deformation law of a foundation pit in excavation and support engineering,the irreversible process of foundation pit excavation and support is visualized by FLAC3D numerical simulation soft-ware.By analyzing the ground surface settlement outside the pit,the uplift of the soil in the pit and the lateral displacement of the foundation pit,the stability of the pit support and the feasibility of the support scheme are analyzed.With the excavation of the foundation pit,the maximum settlement of the soil behind the pile appears at about 12 m from the foundation pit.When the foundation pit is excavated to-3.5 m,the settlement amount is obviously smaller;the amount of uplift and uplift of the foundation pit varies with the foundation.The pit exca-vation depth increases and increases.The excavation to -5.4 m results in the highest uplift rate and the maxi-mum amount of uplift is 15.4 mm.In the third excavation process,the lateral displacement deformation laws of the sidewalls of the foundation pit are basically the same,and the maximum horizontal displacement after the ex-cavation is at -3.85 m,which is about two-thirds of the total excavation depth.The simulation values of each deformation index of the foundation pit are within the scope of controllable and standard requirements.After each step excavation is completed,the deformation law of the foundation pit is basically the same.关键词
桩锚支护/数值模拟/变形规律Key words
pile-anchor support/numerical simulation/deformation law分类
建筑与水利引用本文复制引用
徐孟龙,王辉..某住宅楼基坑支护FLAC3D数值模拟分析[J].河南城建学院学报,2018,27(2):56-60,5.
