结构性超固结土的统一硬化模型

侯伟; 姚仰平; 牛雷

doi:10.13204/j.gyjz200808004

结构性超固结土的统一硬化模型

doi: 10.13204/j.gyjz200808004

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:

国家自然科学基金资助项目(10672010);国家基础研究计划资助项目(2007CB714203)

详细信息

作者简介:
侯伟女 1969年1月出生博士后.E-mail:houwei@ce.buaa.edu.cn

计量
- 文章访问数: 88
- HTML全文浏览量: 9
- PDF下载量: 119
- 被引次数: 0
出版历程
- 收稿日期: 2008-04-30
- 刊出日期: 2008-08-20

UNIFIED HARDENING MODEL FOR STRUCTURALLY OVER-CONSOLIDATED CLAYS

1.
Department of Civil Engineering,Beihang University Beijing 100191

摘要

摘要: 统一硬化超固结土模型是在下加载面和剑桥模型理论框架下,提出的能够描述超固结土的剪缩、剪胀、硬化和软化特性的简单、实用的模型。它通过将与土的结构性有关的参数引入到超固结土模型中,来建立结构性超固结土模型。与剑桥模型相比,它只增加了2个材料参数,即伏斯列夫面的斜率Mh和结构性参数。采用新模型对结构性超固结土的应力-应变关系进行预测的结果表明:所建立的结构性超固结土模型基本能够描述结构性超固结土的特性。
- 结构性 /
- 超固结土 /
- 统一硬化模型 /
- 统一硬化参数
Abstract: Based on the subloading yield surface and the Cam-clay model,the proposed unified hardening model is used to describe the characteristics for over-consolidated clay with structure,including strain hardening,strain softening and stress dilatancy.The constitutive model for over-consolidated clays with structure is proposed introducing the parameter related to the structure of clays and requires two additional parameters,which are the slope of the Hvorslev envelope and the structure parameter.The predicted results of structurally over-consolidated clays show that the proposed model can rationally describe the basic properties for structurally over-consolidated clays.
- structure /
- over-consolidated clays /
- unified hardening model /
- unified hardening parameter

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参考文献(13)

Desai C S,Faruque M O.Constitutive Model for Geological Materials.Journal of Engineering Mechamcs,1984,10:1 391-1 408

[2] Kawadas M,Amorusi A.A Constitutive Model for Structured Soil.Geotechnique,2000,50 (3):263-273

[3] Asaoka A,Noda T,Femando G S K.Consolidation Deformation Behavior of Lightly and Heavily Overconsolidated Clay Foundation,Soils and Foundations.1998,38(6):75-91

[4] Asaoka A,Masaki N,Toshihiro N.Superloading Yield Surface Concept for Highly Structured Soil Behavior.Soils and Foundations,2000,40 (2):99-110

[5] 沈珠江.结构性黏土的堆砌体模型.岩土力学,2000,21(1);1-4

[6] Shen Z J.A Granular Medium Model for Liquefaction Analysis of Sands.岩土工程学报,1999,21(6):742-748

[7] 周成,沈珠江,陈铁林,等.结构性黏土的边界面砌块体模型.岩土力学,2003.24(3):317-321

[8] 姚仰平,侯伟,周安楠.基于Hvorslev面的超固结土模型.中国科学,2007,37(1I):1 417-1 429

[9] 罗汀,姚仰平.岩土材料应力路径无关硬化参量的构成方法.岩土力学,2007,28(1):69-76

[10] Yao Y P,Sun D A,Leo T.A Critical State Model for Sands Dependent on Stress and Density.Int.J.Numer.Anal.Meth.Geomech.,2004,28:323-337

[11] Yao Y P,Zhou A N,Lu D C.Extended Transformed Stress Space for Geomaterials and Its Application.Journal of Engineering Mechanics,ASCE,2007,133(10):1 115-1 123

[12] Matsuoka H,Yao Y P,Sun D A.The Cam-Clay Models Revised by the SMP Criterion.Soils and Foundations,1999,39(1):81-95

[13] Yao Y P,Leo T,Sun D A,et al.A Simple 3-D Constitutive Model for Bopth Clay and Sand.岩土工程学报,2002,24(2):240-246

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