Fractal Representation for Effective Stress of Unsaturated Soils

被引：7
作者：
Xu, Yongfu [1 ]
Cao, Ling [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Civil Engn, Shanghai 200240, Peoples R China
来源：
INTERNATIONAL JOURNAL OF GEOMECHANICS | 2015年 / 15卷 / 06期
关键词：
Unsaturated soil; Pore pressure; Strength theory; Suction; Effective stress; SHEAR-STRENGTH; MECHANICAL-BEHAVIOR; SUCTION; PREDICTION; STATE;
D O I：
10.1061/(ASCE)GM.1943-5622.0000446
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Bishop's effective stress equation for unsaturated soils was abandoned for some time because of the difficulties in estimating the value of parameter chi. Only recently has it been recognized that the use of Bishop's stress equation can lead to simpler and more realistic constitutive models for unsaturated soils. Based on the analysis of the equilibrium of solid particles, it was possible to establish an analytical expression for Bishop's parameter chi from soil pore structure. It is shown that quantitative predictions of shear strength and volume change in unsaturated soils can be made using the effective stress concept. (C) 2014 American Society of Civil Engineers.
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页数：9
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