水工建筑物基坑开挖支护对土体变形影响及仿真研究  

Study on the Influence of Foundation Pit Excavation Support on Soil Deformation and Simulation

作　　者：崔雨声 Cui Yusheng(Guangdong Construction Engineering Group Co.Ltd.,Guangzhou,Guangdong 511340)

机构地区：[1]广东省建筑工程集团股份有限公司,广东广州511340

出　　处：《江西建材》2024年第8期208-210,共3页

摘　　要：文中通过Abaqus软件建立基坑开挖仿真模型,对基坑开挖过程中的地表沉降和水平位移进行分析,并探究地下连续墙厚度以及水平支撑间距对地表沉降的影响。通过分析模型得知,地表沉降量-与基坑边界距离的关系曲线较为一致,表现为先增加后降低最后稳定的变化规律;所有开挖条件下,桩基顶部的水平位移基本保持不变,约为10 mm,随着桩身深度的增加,桩体水平位移表现为先增加后降低的变化规律。综上表明,增加地下连续墙厚度以及降低水平支撑的间距,可有效降低周边地表的沉降量以及桩体的水平位移。In order to analyze the influence of foundation pit excavation on surrounding soil deformation in hydraulic buildings,a foundation pit excavation simulation model was established by Abaqus software to analyze the surface settlement and horizontal displacement during the excavation of foundation pit,and the influence of the thickness of underground diaphragm wall and horizontal support spacing on the surface settlement was explored.Through the analysis of the model,it is found that the relationship between the surface settlement and the boundary distance of the foundation pit is consistent,showing a change law of first increasing,then decreasing and finally stabilizing.Under all excavation conditions,the horizontal displacement at the top of pile foundation basically remains unchanged,about 10 mm.With the increase of pile depth,the horizontal displacement of pile body increases first and then decreases.In conclusion,increasing the thickness of the diaphragm wall and reducing the spacing of horizontal supports can effectively reduce the settlement of the surrounding surface and the horizontal displacement of the pile.

关 键 词：基坑工程 支护结构 数值分析 土体变形 沉降量 

分 类 号：TU463[建筑科学—结构工程]