考虑土体流变时挡土结构内力和变形的实用计算方法  

THE PRACTICAL CALCULATION METHOD OF INNER FORCE AND DEFORMATION OF RETAINING STRUCTURES IN CONSIDERATION OF RHEOLOGY OF EARTH-BODY

作　　者：马石城[1] 任宜春[1] 邹银生[2] 

机构地区：[1]湘潭大学建筑工程系 [2]湖南大学土木工程学院

出　　处：《土木工程学报》2004年第6期92-96,共5页China Civil Engineering Journal

基　　金：湖南省教育厅资助项目 (0 1C0 85)

摘　　要：本文从土压力和基床系数随时间变化的研究出发 ,提出了一种分析流变性土体中开挖支护结构内力和变形随时间变化的实用计算方法。该方法可以很方便地计算出支护结构顶端位移和支护结构中内力随时间的变化 ,为流变性土体中开挖与支护的工况选择提供了计算依据 ;它所需的计算参数物理概念明确 ,且容易由常规的试验获得 ;利用现有的有限元软件的功能 ,还可以模拟基坑开挖与支护的全过程。According to the research on the change with time of the earth pressure and the coefficient of foundation bed, this paper puts forward a practical calculation method analyzing the change with time of the inner force and deformation of the excavation supporting structure. This method can conveniently calculate the change with time of the inner force of the supporting structure so as to provide the calculation basis for the performance choice of excavation and supporting condition in the rheologic earth-body. The physical conception of calculation parameters needed is clear, and they can be gained easily by conventional tests. And furthermore, utilizing the function of the existent FEM software, it can simulate the whole process of the foundation pit excavation and supporting protection.

关 键 词：挡土结构 流变 内力 有限元法 

分 类 号：TU470[建筑科学—结构工程]