Three-Stage Permanent Deformation Behavior of Subgrade Soils

Abstract:

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The development of the permanent deformation of subgrade soils under repeated load tests may consists of three stages, namely the primary, secondary and tertiary stages, but the existing models can not describe this behavior very well, so a new model is required to be developed. Based on the creep equation of the soil under static load, a mechanistic model is developed to describe the development of the permanent deformation of the soil under repeated load tests. Triaxial repeated load tests are conducted for silty soils and results show that, under some conditions, the development of the permanent deformation of silty clay consists of three stages and the number of load repetitions corresponding to the initiation of the tertiary stage is 330,0000. The new model is used to fit the test results and the comparison of test results and fitting results prove that this model can describe all three stages of permanent deformation.

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Edited by:

Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du

Pages:

1942-1946

DOI:

10.4028/www.scientific.net/AMR.374-377.1942

Citation:

R. Fang et al., "Three-Stage Permanent Deformation Behavior of Subgrade Soils", Advanced Materials Research, Vols. 374-377, pp. 1942-1946, 2012

Online since:

October 2011

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Price:

$35.00

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