钢板桩地基基础的计算分析

Calculated analysis for steel sheet pile foundation layer

研究了土体-构造物共同作用的非线性问题.为研究土体-构造物的共同作用性能,利用钢板桩加强的地基基础进行了有限元分析.为模拟土体-构造物间的相互作用引用了界面元.计算分析结果为:(1)对沉降量与水平位移,利用界面元计算时,其结果稍大;(2)对极限承载力,利用界面元计算的结果约小12%;(3)竖状基础的水平位移和竖向位移,将受界面元的影响.

The purpose of this research is to develop computational procedures for nonlinear soil-structure interaction problems. In order to study soil-structure interaction behavior, the finite element analysis for the strip footing subjected to both vertical and lateral loads, and foundation layer reinforced with sheet pile are considered. Interface elements are used between the footing and the soil to model the interface behavior. The main analyzed results are as follows; (1) For the prediction of settlement and lateral displacement, the result due to interface element is evaluated larger then without interface element. (2) For the determination of ultimate bearing capacity, the value using interface element appeared smaller by 12%, which is safe. (3) The horizontal and vertical displacement of a strip footing affected by the presence of interface element.