Elastoplastic Model for Soils Considering Structure and Overconsolidation

doi:10.1007/s12204-019-2050-1

Abstract

Abstract: An isotropic hardening elastoplastic model for soil is presented, which takes into consideration the influence of structure and overconsolidation on strength and deformation of clays. Based on the superloading concept and subloading concept, the inner structural variable ω and overconsolidation variable ρ are introduced to describe the structure and overconsolidation of soil. The present model requires three additional parameters which can be obtained by conventional triaxial test, and the other parameters are same as those of modified Cam-clay (MCC) model. The performance of the proposed model is verified by undrained and drained triaxial tests.

Key words: elastoplastic model| clay| overconsolidation| structure| transformed stress

摘要： An isotropic hardening elastoplastic model for soil is presented, which takes into consideration the influence of structure and overconsolidation on strength and deformation of clays. Based on the superloading concept and subloading concept, the inner structural variable ω and overconsolidation variable ρ are introduced to describe the structure and overconsolidation of soil. The present model requires three additional parameters which can be obtained by conventional triaxial test, and the other parameters are same as those of modified Cam-clay (MCC) model. The performance of the proposed model is verified by undrained and drained triaxial tests.

关键词: elastoplastic model| clay| overconsolidation| structure| transformed stress

CLC Number:

TU 432

ZHANG Shuo (张硕), LIAO Chencong* (廖晨聪), ZHANG Qi (张琪), ZHEN Liang (甄亮). Elastoplastic Model for Soils Considering Structure and Overconsolidation[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(2): 196-203.

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