摘要
主要研究复合地基的固结沉降,建立位移反分析模型,使用反分析的计算方法进行沉降预测.选择比奥三维固结理论作为地基沉降理论基础,土体本构模型选用邓肯-张弹性非线性本构模型.利用自编的三维有限元反演程序对工程实例进行计算分析,得到与实际沉降值相吻合的结果,以此进行实际工程的沉降预测.
In this paper,consolidation settlement calculation method and displacement back—analysis model for composite foundation are studied.The settlement prediction is carried out by back—analysis method.The Biot three—dimensional consolidation finite element back—analysis program is prepared,which uses the Duncan—Chang elastic nominear constitutive model.The Biot three—dimensional consolidation finite element back—analysis program is used to analyze specific examples of projects.The result is obtained consistent with the actual settlement value.In this way,the settlement prediction of the actual project is carried out.
作者
林如
Lin Ru(China Railway Construction Bridge Engineering Bureau Group Co.Ltd.,Tianjin 300300,China)
出处
《铁道建筑技术》
2018年第A01期220-223,共4页
Railway Construction Technology
关键词
复合地基
反分析
比奥三维固结理论
沉降预测
composite foundation
back—analysis
Biot three—dimensional consolidation theory
settlement prediction
作者简介
林如(1987),男,工程师,主要从事深基坑监测与变形分析。
