Numerical Analysis of Footing Settlement Problem by Subloading Surface Model

Abstract

This article addresses the numerical analysis of the load-settlement relation of footing on a soil ground by theˆnite diŠerence method incorporating the subloading surface model. The subloading surface model is the elastoplastic constitutive model describing most pertinently the plastic strain rate due to the rate of stress inside the yield surface so as to fulˆll the continuity and the smoothness conditions. For theˆnite diŠerence program FLAC3D is used, which adopts the explicit dynamic relaxation method without solving the total stiŠness matrix equation and thus has the capability for the remarkable reduction of calculation time. The relevance of the present approach to the description of the loadsettlement curve exhibiting the ultimate load is demonstrated by the numerical experiments. Further, the applicability to the prediction of real behavior of footing-settlement is veriˆed by comparison with the test data for sand grounds with a high friction property.

Preparation of Paste Filling Body and Study on Supported Transportation Laws Using Flac3D Simulation

“…In the coal mine void area, the joint support of the GFB, coal pillar, and surrounding rock prevents the collapse of the overlying rock layer. A fissure zone and a bending subsidence zone appear, and the rock body remains as a continuous medium, making it suitable for simulation studies using Flac3D [32,33].…”