Modelling of laboratory soil desiccation cracking using DLSM with a two-phase bond model

被引：43

作者：

Gui, Y. ^{[1
]}

Zhao, G. -F. ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Civil & Environm Engn, Nanyang Ctr Underground Space, Singapore 639798, Singapore

[2] Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2015年 / 69卷

关键词：

Desiccation cracking; DLSM; Unsaturated soil; Two-phase bond; Heterogeneity; Particle size;

D O I：

10.1016/j.compgeo.2015.07.001

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The distinct lattice spring model (DLSM) is extended to modelling soil desiccation cracking by introducing a two-phase bond model. The bond, which comprises a spring bond and water bond, is developed to consider the interaction of the pore pressure with deformation of the soil matrix. A parameter representing soil heterogeneity is introduced to consider the uneven drying during desiccation. The capability of the model is demonstrated through a number of numerical examples, which are in good agreement with the experimental observations. Three significant factors controlling desiccation cracking, which are soil particle size, heterogeneity and boundary conditions, are identified. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：578 / 587

页数：10

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