摘要
我国地形复杂多样,基坑开挖面临许多困难,文中通过数值模拟进行建模,对比分析深基坑开挖的支撑情况及水帷幕嵌入岩体深度情况。结果表明,地表沉降曲线呈抛物线,模型结果与实际监测结果相似,其中止水帷幕水平位移呈现“弓”字形曲线;土体卸荷是基坑产生位移的关键因素,通过增加横向支撑可以改变减缓地表沉降位移及止水帷幕水平位移;止水帷幕嵌入岩体的深度越深,地表沉降及止水帷幕水平位移越小,通过增加止水帷幕嵌入岩体深度,可知基坑变形程度。
The terrain in China is complex and diverse,and the excavation of foundation pit is also facing many difficulties.First,the support situation of deep foundation pit excavation and the depth of water curtain embedded rock mass are analyzed through numerical simulation.The results show that the surface settlement curve is parabolic,and the model results are similar to the actual monitoring results,where the horizontal displacement of the water stop curtain presentst he curve of"bow";soil discharge is the key factor for the dsiplacement.The horizontal support of the surface can reduce the displacement of the foundation pit and the rock mass.
作者
刘学邦
Liu Xuebang(Fujian Construction Engineering Group Co.Ltd.,Fuzhou,Fujian 350000)
出处
《江西建材》
2023年第3期276-278,284,共4页
Jiangxi Building Materials
关键词
深基坑
变形位移
监测
数值模拟
Deep foundation pit
Deformation displacement
Monitoring
Numerical simulation
作者简介
刘学邦(1987-),男,福建福州人,本科,工程师,主要研究方向为土木工程。
