考虑土体连续性的桩基承台梁内力分析  

Analysis for the internal force of pile capping beam considering continuity of soil mass

作　　者：赵明华[1] 邵同高[1] 何俊翘[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《湘潭矿业学院学报》2002年第3期58-62,共5页Journal of Xiangtan Mining Institute

基　　金：湖南省自然科学基金资助项目(编号:98JJY2041)

摘　　要：针对非文克尔地基上的桩基承台梁,从桩土作者共同工作出发,考虑土体连续性和应力变形的扩散性,提出一种利用变基床系数和地基柔度矩阵进行迭代,计算桩基承台梁内力的有限单元法,可用于分析变截面承台梁、复杂边界条件、各种荷载组合,以及梁体与土脱开、基桩差异等特殊情况下墙下条形桩基承台梁的内力.图5,参9.Most analyses of internal force of pile capping beam are usually based on the Winkler foundation model,and the influence of the continuity of soil mass and diffusivity of stress deformation to the internal force distribution of pile capping beam can't be considered. On the basis of nonWinkler foundation and considering the interaction between piles and soil under the pile capping beam, a finiteelement method is proposed by using changing base coefficient and foundation flexibility matrix to gain the internal forces iteratively in this paper,through which the continuity of soil mass and diffusivity of stress deformation can be taken into account under various boundary conditions, different loadings and variant beam characters.5figs.,9refs.

关 键 词：内力分析 承台梁 非文克尔地基 柔度矩阵 有限单元法 土体 桩基础 

分 类 号：TU473.1[建筑科学—结构工程]