Static and Dynamic Response of Old Clay under Unloading

CHEN Cong; ZHENG Xinding; LIU Zhaogang; JIAN Qiwei; ZHOU Jian; TAO Wentao; HOU Yunliang

doi:10.3973/j.issn.1672-741X.2013.03.007

Tunnel Construction >

2013 , Vol. 33 >Issue 3: 209 - 214

DOI: https://doi.org/10.3973/j.issn.1672-741X.2013.03.007

Static and Dynamic Response of Old Clay under Unloading

CHEN Cong ,
ZHENG Xinding ,
LIU Zhaogang ,
JIAN Qiwei ,
ZHOU Jian ,
TAO Wentao ,
HOU Yunliang

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(1.Wuhan Metro Group Co., Ltd., Wuhan 430070, Hubei, China; 2.China Railway Tunnel Survey and Design Institute Co., Ltd., Tianjin 300133, China; 3.Tongji University, Shanghai 200331, China)

Received date: 2012-12-08

Revised date: 2013-01-28

Online published: 2013-03-23

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Abstract

This article focuses on strainstress behavior of old clay in Wuhan along with different unloading ratio based on triaxial tests, compared with researches on soft clay. With utilizing DuncanChang constitutive model, a favorable consideration of Wuhan old clay may be given in nonliner and nonelastic model and constitutive parameters, which would be validated by many experiments, and may be useful for conducting practical projects in terms of the acquisition of constitutive parameters and models.

Key words： old clay; unloading; stressstrain behavior; normalize; Duncan-Chang constitutive model

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CHEN Cong , ZHENG Xinding , LIU Zhaogang , JIAN Qiwei , ZHOU Jian , TAO Wentao , HOU Yunliang . Static and Dynamic Response of Old Clay under Unloading[J]. Tunnel Construction, 2013 , 33(3) : 209 -214 . DOI: 10.3973/j.issn.1672-741X.2013.03.007

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