A unified constitutive model for both clay and sand with hardening parameter independent on stress path
A unified constitutive model for both clay and sand with hardening parameter independent on stress path
复制标题
具有独立于应力路径的硬化参数的粘土和砂的统一本构模型
DOI：
10.1016/j.compgeo.2007.04.003
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发表时间：
2008-03
影响因子：
5.3
通讯作者：
Y.P. Yao；D.A.Sun；H.Matsuoka
中科院分区：
文献类型：
--
作者：
Y.P. Yao；D.A.Sun；H.Matsuoka
本文从修正的Cam-clay模型出发，考虑了以下两点，建立了三维应力条件下粘土和砂土的统一本构模型。首先，将基于SMP准则的转换应力张量应用于Cam-clay模型；该模型一致地描述了剪切屈服和剪切破坏，并将临界状态理论与粘土的SMP准则相结合。其次，推导了一个与应力路径无关的硬化参数，建立了统一的粘土和砂土本构模型；它不仅描述了轻到重膨胀砂土的膨胀，而且还简化了粘土的塑性体积应变。在不同应力路径下对砂土进行三轴压缩和拉伸试验，验证了硬化参数的有效性。该模型只需要5个常规土壤参数。
A unified constitutive model for both clay and sand under three-dimensional stress conditions is derived from the modified Cam-clay model, by taking the following two points into consideration. First, a transformed stress tensor based on the SMP (spatially mobilized plane) criterion is applied to the Cam-clay model. The proposed model consistently describes shear yielding and shear failure and combines critical state theory with the SMP criterion for clay. Secondly, a new hardening parameter, which is independent of the stress path, is derived in order to develop a unified constitutive model for both clay and sand. It not only describes the dilatancy for lightly to heavily dilatant sand, but also reduces to the plastic volumetric strain for clay. The validity of the hardening parameter is confirmed by the test results of triaxial compression and extension tests on sand under various stress paths. Only five conventional soil parameters are needed in the proposed model.
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DOI：
--
发表时间：
1985
期刊：
--
影响因子：
--
作者：
C. Wroth;G. Houlsby
通讯作者：
C. Wroth;G. Houlsby
DOI：
--
发表时间：
1985
期刊：
Enfermagem em Foco
影响因子：
--
作者：
C. Wroth;G. Houlsby
通讯作者：
C. Wroth;G. Houlsby
DOI：
10.1016/0261-7277(85)90030-0
发表时间：
1985
期刊：
International Journal of Soil Dynamics and Earthquake Engineering
影响因子：
--
作者：
J. Prévost
通讯作者：
J. Prévost
DOI：
10.1002/nag.1610090505
发表时间：
1985-09
影响因子：
4
作者：
O. Zienkiewicz;K. Leung;M. Pastor
通讯作者：
O. Zienkiewicz;K. Leung;M. Pastor
DOI：
10.1016/0148-9062(84)90416-9
发表时间：
1984
期刊：
--
影响因子：
--
作者：
三浦 哲彦;村田 秀一;安福 規之
通讯作者：
三浦 哲彦;村田 秀一;安福 規之