A SIMPLE MODELING OF STRUCTURED SOILS

机译：结构化土的简单建模

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A simple method to describe stress-strain behavior of structured soils under normally and over consolidated states in general stress systems is presented. Based on an idea that structured soils can be made due to a kind of bonding effects between soil particles, a simple elastoplastic model is formulated by extending subloading tij model (Nakai and Hinokio, 2004). Firstly, a new interpretation of subloading surface concept for describing the influence of density and/or confining pressure is shown. Secondly a method to take into consideration the effect of bonding on the soil behavior in constitutive modeling is developed. By introducing this method for considering bonding to the subloading tij model, the stress-strain behavior of structured soils can be described. The validity of the proposed model is checked through numerical simulation of oedometer tests and undrained shear tests on structured clays. An interpretation for super/subloading surface concept to describe structured soil by Asaoka et al. (1998) is also given, and the similarities and differences between the present model and super/subloading surface model are also discussed in detail.

机译：提出了一种简单的方法来描述一般应力系统中正常和超固结状态下结构性土的应力-应变行为。基于一种想法，即由于土壤颗粒之间的一种键合作用而可以形成结构化的土壤，因此，通过扩展子荷载tij模型来建立简单的弹塑性模型（Nakai和Hinokio，2004）。首先，示出了用于描述密度和/或围压影响的子加载表面概念的新解释。其次，开发了一种在本构模型中考虑粘结对土壤行为影响的方法。通过引入这种考虑考虑与重载tij模型结合的方法，可以描述结构化土的应力-应变行为。通过对里程表测试和结构粘土的不排水剪切测试的数值模拟，验证了所提模型的有效性。 Asaoka等人解释了超载表面概念来描述结构化土壤。还给出了等式（1998），并且还详细讨论了该模型与超载表面模型之间的异同。

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来源
《Sino-Japan Geotechnical Symposium November; 20071104-07; Chongqing(CN)》|2007年|P.435-447|共13页
会议地点 Chongqing(CN)
作者
T. NAKAI; F. ZHANG; H. KYOKAWA; M. KIKUMOTO;
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作者单位

Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

Department of Civil Engineering, N;

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原文格式 PDF
正文语种 eng
中图分类土力学、地基基础工程;
关键词
Elastoplastic Model; Structured Soil; Bonding; Density;

机译：弹塑性模型结构土粘结密度;

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4. A SIMPLE MODELING OF STRUCTURED SOILS [C] . T. NAKAI, F. ZHANG, H. KYOKAWA, Sino-Japan Geotechnical Symposium . 2007

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6. Determination of macro-scale soil properties from pore scale structures: image-based modelling of poroelastic structures [O] . K. R. Daly, S. D. Keyes, T. Roose -1

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8. Centrifugal Modelling of Soil Structures. Part II. The Centrifugal Modelling of Dynamic Soil-Structure Interaction and Earthquake Behavior [R] . Morris, D. V., Schofield, A. N. 1979

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A SIMPLE MODELING OF STRUCTURED SOILS

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