摘要
在高层建筑基坑支护中,常用的分析方法没有考虑基坑支护参量变化情况,影响分析结果。文中根据有限元网格划分原理,提出基坑支护稳定性分析方法,构建基坑支护稳定性分析的有限元模型,获取土体失稳破坏的滑动面剪应力;分析剪应力与应变张量关系,构建有限元方程;不考虑条间力作用,计算稳定性系数,分析基坑支护稳定性。试验结果表明,该方法滑裂面拟合曲线与实际曲线一致,能够获取精准分析结果。
In the foundation pit support of high-rise building projects,the common analysis methods do not consider the change of foundation pit support parameters,which affects the analysis results.According to the principle of finite element mesh division,the stability analysis method of foundation pit support is proposed,and the finite element model of foundation pit support stability analysis is constructed to obtain the sliding surface shear stress of soil instability.Analyze the shear stress and strain tensor relationship and construct the finite element equation.The stability cofficient is calculated to analyze the stability of foundation pit support.According to the experimental results,the fitting curve of the sliding crack surface of this method is consistent with the actual curve,and can obtain accurate analysis results。
作者
覃燕
Qin Yan(Guangxi Yantai Construction Technology Co.Ltd.,Nanning,Guangxi 530000)
出处
《江西建材》
2023年第2期213-215,共3页
Jiangxi Building Materials
关键词
有限元
基坑支护
稳定性分析
Finite element
Foundation pit support
Stability analysis
