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2009•Chinese journal of rock mechanics and engineeringRequires access

PERMEABILITY OF SATURATED SOFT CLAYS AND ITS EFFECTS ON ONE-DIMENSIONAL LARGE STRAIN CONSOLIDATION

Qiujuan Zhou

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Abstract

Based on laboratory seepage pressure tests of saturated soft clays in Nansha,Guangzhou,the permeability of saturated soft clays under different consolidation and seepage pressures are systematically investigated.The effects of loading and unloading conditions on permeability are analyzed,and experience formulae are given to define void ratio and permeability coefficient.Testing results reveal the permeability law of saturated soft clays under different hydraulic gradients and the seepage failure characteristics.Based on experiments and large strain consolidation equations with displacement as variable,the effects of initial seepage coefficient on large strain consolidation are studied.It is shown that the nonlinear compressibility and permeability need to be considered in large strain consolidation calculation of soft foundation.

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What this paper is about

Based on laboratory seepage pressure tests of saturated soft clays in Nansha,Guangzhou,the permeability of saturated soft clays under different consolidation and seepage pressures are systematically investigated.The effects of loading and unloading conditions on permeability are analyzed,and experience formulae are given to define void ratio and permeability coefficient.Testing results reveal the permeability law of saturated soft clays under different hydraulic gradients and the seepage failure characteristics.Based on experiments and large strain consolidation equations with displacement as variable,the effects of initial seepage coefficient on large strain consolidation are studied.It is shown that the nonlinear compressibility and permeability need to be considered in large strain consolidation calculation of soft foundation.

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Available abstract

Based on laboratory seepage pressure tests of saturated soft clays in Nansha,Guangzhou,the permeability of saturated soft clays under different consolidation and seepage pressures are systematically investigated.The effects of loading and unloading conditions on permeability are analyzed,and experience formulae are given to define void ratio and permeability coefficient.Testing results reveal the permeability law of saturated soft clays under different hydraulic gradients and the seepage failure characteristics.Based on experiments and large strain consolidation equations with displacement as variable,the effects of initial seepage coefficient on large strain consolidation are studied.It is shown that the nonlinear compressibility and permeability need to be considered in large strain consolidation calculation of soft foundation.

Key concepts: Consolidation (business), Geotechnical engineering, Compressibility, Permeability (electromagnetism), Void ratio, Pore water pressure, Geology, Materials science

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PERMEABILITY OF SATURATED SOFT CLAYS AND ITS EFFECTS ON ONE-DIMENSIONAL LARGE STRAIN CONSOLIDATION — Research Paper | ScholarLens