摘要
建立了一个基坑多道水平支撑系统的计算模型,利用非线性有限元软件abaqus,对基坑多道水平支撑系统进行有限元分析。采用拆除构件法对桩撑支护的基坑进行冗余度的定量分析,并与实际工程进行对比。结果表明,基坑最下道支撑的强度冗余度以及刚度冗余度要远远小于上道支撑,说明在其失效后极有可能引发基坑的整体坍塌,在施工过程中应对最下道支撑予以重视并采取相应措施。
Established a calculation model of multiple horizontal bracing system of foundation pit,and the finite element analysis is carried out by using nonlinear finite element software ABAQUS.The quantitative analysis of the redundancy of the foundation pit use the method of removing bar,and compared with the actual project.The results show that the strength redundancy and the stiffness redundancy of the bottom foundation pit bracing are significantly lower than the upper bracing. Their failure can lead to the destruction of the whole foundation pit to collapse.So,the bottom bracing should be taken seriously and be taken some corresponding measures in the process of construction.
出处
《科技通报》
2018年第8期200-205,共6页
Bulletin of Science and Technology
关键词
有限元
多道支撑
拆除构件法
冗余度
finite element
multiple horizontal bracing
removing bracing
redundancy
