|本期目录/Table of Contents|

[1]张斗斗,江志安,张锡治.天津地区软土的蠕变特性和速率敏感性[J].天津大学学报(自然科学版),2009,(12):1078-1082.
 ZHANG Dou-dou,JIANG Zhi-an,ZHANG Xi-zhi.Creep and Rate Sensitivity Behaviour of Tianjin Soft Clay[J].Journal of Tianjin University,2009,(12):1078-1082.
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天津地区软土的蠕变特性和速率敏感性()
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《天津大学学报(自然科学版)》[ISSN:0493-2137/CN:12-1127/N]

卷:
期数:
2009年12
页码:
1078-1082
栏目:
建筑工程
出版日期:
2009-12-15

文章信息/Info

Title:
Creep and Rate Sensitivity Behaviour of Tianjin Soft Clay
文章编号:
0493-2137(2009)12-1078-05
作者:
张斗斗1江志安2张锡治1
1. 天津大学建筑设计研究院,天津 300072;2. 铁道第三勘察设计院集团有限公司,天津 300151
Author(s):
ZHANG Dou-dou 1JIANG Zhi-an 2ZHANG Xi-zhi 1
1. Academy of Architectural Design and Research,Tianjin University,Tianjin 300072,China; 2. The Third Railway Survey and Design Institute Group Corporation,Tianjin 300151,China
关键词:
弹黏塑性速率敏感性次固结软黏土本构模型
Keywords:
elasto-viscoplasticityrate sensitivitysecondary consolidationsoft clayconstitutive model
分类号:
TU447
文献标志码:
A
摘要:
为了研究软土次固结和速率敏感性的内在联系,基于过应力式弹黏塑性本构模型,推导出一个理论关系式,定量地建立了次固结系数和率敏感参数的关系.对天津某地典型软黏土进行了一系列次固结试验和变速固结不排水三轴压缩试验,分析了次固结系数和率敏感参数,验证了所推导的理论关系式的适用性.
Abstract:
This paper is to study the inherent relationship between secondary consolidation and rate sensitivity of soft clay. Based on an overstress-type elasto-viscoplasticity constitutive model,a theoretical equation was deduced to quantify the correlation between secondary consolidation coefficient and rate sensitivity parameter. A series of laboratory tests on the soft clay of Tianjin were performed,including consolidated isotropic undrained(CIU)triaxial compression tests with changed strain-rates and long-term secondary consolidation tests. The corresponding parameters are analysed directly from laboratory tests. The laboratory results verifies the applicability of the deduced theoretical equation.

参考文献/References:

[1] Singh A,Mitchell J K. General stress-strain-time function for soils[J]. Journal of the Soil Mechanics and Foundations Division,ASCE,1968,94(SM1):21-46.
[2] 李建中,彭芳乐,龙冈文夫.不同含水率黏土在不同试验条件下的应力-应变特性[J]. 岩土工程学报,2006, 28(3):343-347. Li Jianzhong,Peng Fangle,Tatsuoka Fumio. Stress-strain behavior of clay with different water contents under different test conditions[J]. Chinese Journal of Geotechnical Engineering,2006,28(3):343-347(in Chinese).
[3] Graham J,Crooks J H A,Bell A L. Time effects on the stress-strain behaviour of natural soft clays[J]. Geotechnique, 1983,33(3):327-340.
[4] Hinchberger S,Qu Guangfeng. Discussion:Influence of structure on the time-dependent behaviour of a stiff sedimentary clay[J]. Geotechnique,2007,57(1):113-114.
[5] Qu Guangfeng,Hinchberger S D,Lo K Y. Evaluation of the viscous behaviour of natural clay using a generalized viscoplastic theory[J]. Geotechnique,2009,59(8):839- 856. [6] Qu Guangfeng.Selected Issues on the Performance of Embankments on Clay Foundations[D]. London:The University of. Western Ontario,2008.
[7] Hinchberger S D,Qu Guangfeng.Viscoplastic constitutive approach for rate-sensitive structured natural clay[J]. Canadian Geotechnical Journal,2009,46(6):609-626.
[8] Yin J H,Graham J.Elastic visco-plastic modeling of the time-elependent stress-strain behavior of soil[J]. Canadian Geotechnical Journal,1999,36(4):736-745.
[9] Perzyna P. Constitutive equations for rate sensitive plastic materials[J]. Quarterly of Applied Mathematics,1963, 20(4):321-332.
[10] Mesri G,Castro A. Ca/ Cc concept and k’0 during secondary compression[J]. Journal of Geotechnical Engineering, 1987,113(3):230-247.

备注/Memo

备注/Memo:
收稿日期:2008-11-20;修回日期:2009-04-08.
作者简介:张斗斗(1973— ),男,硕士,工程师.
通讯作者:张斗斗,ddz@tju.edu.cn.
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