基础承载力分析中土体流动机制的细观分析

Micromechanical Study on Soil Flow Mechanism in the Analysis on Ground Bearing Capacity

介绍了颗粒体非连续变形分析方法的基本原理,采用自行研制的颗粒体非连续变形分析程序对基础(浅基础与深基础)极限承载力分析中的土体流动机制进行了细观上的数值模拟,并与模型试验以及经典滑移线法的结果进行了比较,数值模拟的结果再现了模型试验中的土体极限状态下的流动机制,为研究土体极限状态下的细观分析提供了一条途径。

This paper introduces the basic principle of particle discontinuous deformation analysis （P-DDA）, makes the micromechanical numerical simulation of the soil/low mechanism in the analysis on ultimate bearing capacity of the foundations （shallow foundation and deep foundation） by using self-developed program of the particle discontinuous deformation analysis, and compares the numerical results with that of the typical slip line method. The numerical results perform the soil flow mechanism in the model test. The particle discontinuous deformation analysis method provides a numerical tool for the soil micromechanical studies.