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Title: A simplified homogenisation method for composite soils
Authors: Wang, J.G. 
Leung, C.F. 
Ichikawa, Y.
Keywords: Composite ground
Deformation modulus
Homogenisation method
Localization tensor
Mixed soil
Stress ratio
Issue Date: 2002
Citation: Wang, J.G., Leung, C.F., Ichikawa, Y. (2002). A simplified homogenisation method for composite soils. Computers and Geotechnics 29 (6) : 477-500. ScholarBank@NUS Repository.
Abstract: Composite soil may consist of composite ground made up of soft soil reinforced by stiff soil columns or mixed soil made up of thoroughly mixed soft and stiff soils. In general, the behavior of composite soil is not well understood due to non-homogeneous structure of soil matrices. In this paper, a simplified homogenisation method is proposed to model the behavior of mixed soil and composite ground. It assumes that micro-stress/micro-strain is homogeneous in the matrix and the reinforcement of a composite soil and a localization tensor is developed. A microstructure knowledge-based model is proposed to distribute the micro-stress/micro-strain in each phase. This assumption largely simplifies the numerical procedure at the unit cell of composite soils. The validity of the proposed method is verified by comparing the predicted parameters with existing experimental data on mixed soils and composite grounds. Examples show that the proposed method can be applicable to well-randomly mixed soil and oriented composite ground. © 2002 Elsevier Science Ltd. All rights reserved.
Source Title: Computers and Geotechnics
ISSN: 0266352X
DOI: 10.1016/S0266-352X(02)00004-6
Appears in Collections:Staff Publications

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