ANALYSIS IN BEHAVIORS OF OVER-CONSOLIDATED CLAYS DESCRIBED BY CAM-CLAY MODEL AND UNIFIED HARDENING MODEL

Hou Wei; Yao Yangping

doi:10.13204/j.gyjz201109004

Volume 41 Issue 9

Dec. 2014

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2011 > 41(9): 18-23,140

Hou Wei, Yao Yangping. ANALYSIS IN BEHAVIORS OF OVER-CONSOLIDATED CLAYS DESCRIBED BY CAM-CLAY MODEL AND UNIFIED HARDENING MODEL[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(9): 18-23,140. doi: 10.13204/j.gyjz201109004

Citation:

Hou Wei, Yao Yangping. ANALYSIS IN BEHAVIORS OF OVER-CONSOLIDATED CLAYS DESCRIBED BY CAM-CLAY MODEL AND UNIFIED HARDENING MODEL[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(9): 18-23,140. doi: 10.13204/j.gyjz201109004

Citation:

PDF( 0 KB)

ANALYSIS IN BEHAVIORS OF OVER-CONSOLIDATED CLAYS DESCRIBED BY CAM-CLAY MODEL AND UNIFIED HARDENING MODEL

doi: 10.13204/j.gyjz201109004

Hou Wei¹,
Yao Yangping²

1.
1. National Academician &Masters Research Office,BGI Engineering Consultants Ltd,Beijing 100038,China;
2.
2. Department of Civil Engineering,Beihang University,Beijing 100191,China

Received Date: 2011-06-06
Publish Date: 2011-09-20

Abstract

Abstract

Based on researching the features of the modified Cam-clay model and UH model,the mechanism of model describing the behaviors of the over-consolidated (OC) clays is revealed. For the OC clays,the curves predicted by the modified Cam-clay model have abrupt changing points,so the model cannot model continue and gradual changing process well. For the heavy OC clays,the predicted peak strength is rather higher than test data under the drained condition. The model cannot describe the stress-strain relationships in true-triaxial test. The parameters in UH model are the same as those in the modified Cam-clay model. The model using the transformed stress method based on SMP criterion can rationally model many characteristics of the OC clays well,including shear dilatancy,strain hardening and softening,and stress path dependence behavior.
- over-consolidation,
- elasto-plasticity,
- modified Cam-clay model,
- UH model

FullText(HTML)

References(12)

References

姚仰平,侯伟.土的基本力学特性及其弹－塑性描述[J].岩土力学,2009,30(10):2881-2902.

[2] 姚仰平,侯伟,罗汀.土的统一硬化模型[J].岩石力学与工程学报,2009,28(10):2135-2151.

[3] Roscoe K H,Burland J B.On the Generalised Stress-Strain Behaviour of an Ideal Wet Clay[C]∥Heyman J,Leckie F A.Engineering Plasticity.Cambridge: Cambridge University Press,1968,535-609.

[4] 谢定义,姚仰平,党发宁.高等土力学[M].北京: 高等教育出版社,2008.

[5] 罗汀,姚仰平,侯伟.土的本构关系[M].北京: 人民交通出版社,2010.

[6] 郑颖人,孔亮.岩土塑性力学[M].北京: 中国建筑工业出版社,2010.

[7] Yao Y P,Hou W,Zhou A N.UH Model: Three-Dimensional Unified Hardening Model for Overconsolidated Clays [J].Geotechnique,2009,59(5):451-469.

[8] 姚仰平,侯伟,周安楠.基于Hvorslev 面的超固结土模型[J].中国科学: E 辑,2007,37(11):1417-1429.

[9] 姚仰平,李自强,侯伟,等.基于改进Hvorslev 面的超固结土模型[J].水利学报,2008,39(11):1244-1250.

[10] Yao Y P,Sun D A.Application of Lades Criterion to Cam-Clay Model[J].Journal of Engineering Mechanics,2000,126 (1) :112-119.

[11] Nakai T,Hinokio M.A Simple Elastoplastic Model for Normally and Over Consolidated Soils with Unified Material Parameters [J].Soils and Foundations,2004,44(2):53-70.

[12] Mroz Z, Norris V A, Zienkiewicz O C.Application of an Anisotropic Hardening Model in the Analysis of Elasto-Plastic Deformation of Soils[J].Geotechnique,1979,29(1):1-34.

Relative Articles

Supplements(0)

Cited By

Proportional views