双参数地基上带肋筏板基础的耦合数值方法

A Coupling Numerical Method of Raft Foundation with Ribbon Strip on the Two-parameter Ground Base

为解决工程中有关带肋筏板基础与地基土相互作用的计算分析等问题,将带肋筏板基础中的筏板由无单元法模拟,肋梁由有限元方法模拟,根据虚功原理,建立了双参数地基上带肋筏板的一种耦合数值方法.该耦合方法可以计算具有非规则形状、斜交叉梁的带肋筏板基础.实例计算论证了方法的合理性、可行性.

In order to solve the issues about analysing the interaction between ribbed raft foundation and soil in engineering,a coupling numerical method of raft foundation with ribbon strip on two-parameter ground base is presented.The analysis of the raft is carried out with the element-free method of plate on two-parameter ground base,and the finite element method of cross beams is used to solve the ribbon strip.The two parts are coupled together based on the virtual work principle.As the characteristics of the raft element-free method,the coupling numerical method can be used to compute the raft foundation with skew crossing ribbon strip and irregular plane shape.Numerical studies are presented which show the method is reasonable and feasible.