支护参数对沟槽基坑位移变形敏感性的影响  

Influence of Supporting Parameters on Displacement and Deformation Sensitivity of Trench Foundation Pit

作　　者：崔飞飞 王振峰[1] Cui Feifei;Wang Zhenfeng(Shaanxi Institute of Technology,Xi’an 710300,China)

机构地区：[1]陕西国防工业职业技术学院,西安710300

出　　处：《黑龙江科学》2023年第12期43-45,共3页Heilongjiang Science

基　　金：陕西国防工业职业技术学院2022年度自然科学研究项目“‘新基建’背景下的BIM+GIS在城市规划的应用研究”(Gfy22-23)。

摘　　要：支护结构由于受到基坑外主动土压力的作用向基坑内发生变形,为减小基坑内的水平位移及周边地表沉降,采用多级放坡+钢板桩与钢板桩+钢支撑两种方案,通过改变沟槽宽度变化及深度变化来分析周边地表沉降及基坑坑底隆起位移变形。结果表明,改变基坑深度,在一定宽度范围内两者对周边位移的影响相差不大,但是钢支撑方案能够大幅度减小基坑底部的隆起现象。Due to the action of active soil pressure outside the foundation pit,the supporting structure deforms into the foundation pit.In order to reduce the horizontal displacement in the foundation pit and the surrounding surface settlement,the study conducts two schemes of multistage slope release+steel sheet pile and steel sheet pile+steel support,and analyzes the surrounding surface settlement and uplift displacement and deformation of the foundation pit bottom by changing the width and depth of the trench.The results show that when the depth of the foundation pit is changed,the influence of the two on the surrounding displacement is not much in a certain width range,but the steel support scheme can greatly reduce the uplift phenomenon at the bottom of the foundation pit.

关 键 词：有限元分析 多级放坡+钢板桩 钢板桩+钢支撑 敏感性 

分 类 号：TU753[建筑科学—建筑技术科学]