<em>K</em><sub>0</sub>固结黏土的渐近状态模拟

罗汀; 郭敏

doi:10.13204/j.gyjz201109007

K₀固结黏土的渐近状态模拟

doi: 10.13204/j.gyjz201109007

罗汀,
郭敏

1.
北京航空航天大学交通科学与工程学院,北京 100191

基金项目:

国家自然科学基金项目(50879001,10872016);教育部博士点基金项目(20091102110030)

详细信息

作者简介:
罗汀，女，1957年出生，博士，教授。E－mail:tluo@buaa.edu.cn

中图分类号: TU431
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- 文章访问数: 89
- HTML全文浏览量: 9
- PDF下载量: 133
- 被引次数: 0
出版历程
- 收稿日期: 2011-06-06
- 刊出日期: 2011-09-20

ASYMPTOTIC STATE MODELLING FOR K₀ CONSOLIDATED CLAY

Luo Ting,
Guo Min

1.
School of Transportation Science and Engineering,Beihang University,Beijing 100191,China

摘要

摘要: 将正常固结土的渐近状态模型推广到K0固结土的渐近状态模型。推导出三轴压缩条件下耦合参量的求解公式，提出K0固结土的渐近状态模型中耦合参量关于应力Lode角的函数关系式，并用K0固结土的修正剑桥模型及K0固结土的渐近状态模型对多种黏土的三轴压缩、三轴伸长的试验结果进行预测对比。结果表明：K0固结土的渐近状态模型较K0固结土的修正剑桥模型能更合理地预测不同应力状态下K0固结土的应力-应变关系。
- 渐近状态 /
- K0固结 /
- 耦合参量 /
- 应力-应变关系
Abstract: Asymptotic State(AS) model for normally consolidated clay was extended to asymptotic state model for K0 consolidated clays. The formulation of partially coupled parameter was deduced under triaxial compression condition.A function of partially coupled parameter associated with Lodes angle was proposed. Modified Cam-clay (MCC) model and AS model for K0 consolidated clay were applied to predict stress-strain relationship under triaxial compression and extension conditions. The comparison between predicted results showed that AS model for K0 consolidated clay was more reasonable in describing constitutive relations.
- asymptotic state /
- K0 consolidation /
- partially coupled parameter /
- constitutive relation

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参考文献(6)

罗汀,姚仰平,Jian Chu.饱和砂土渐近状态特征及其模拟[J].中国科学: E 辑,2009,39(1):39-47.

[2] Yao Y P,Sun D A,Luo T.A Critical State Model for Sands Dependent on Stress and Density[J].International Journal for Numeral and Analytical Methods in Geomechanics, 2004, 28(1):323-337.

[3] Yao Y P,Sun D A,Matsuoka H.A Unified Constitutive Model for Both Clay and Sand with Hardening Parameter Independent on Stress Path[J].Computers and Geotechnics,2008,35 (2):210-222.

[4] Ling H I,Asce A M,Yue D Y,et al.Anisotropic Elastoplastic Bounding Surface Model for Cohesive Soils [J].Journal of Engineering Mechanics,2002(6):748-758.

[5] Yin Z Y, Chang C S.Microstructural Modelling of Stress-Dependent Behaviour of Clay[J].International Journal of Solids and Structures,2009,46: 1373-1388.

[6] Anandarajah A,Asce A M,Yannis F.Bounding Surface Plasticity Ⅲ: Application to Anisotropic Cohesive Soils [J].Journal of Engineering Mechanics,1986,112(12):1292-1315.

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