Numerical modeling the elastoplastic constitutive relation of expansive soil

REN Qing-yang; ZHU Yi-wen; WANG Jing-tao; LIU Te-hong

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Numerical modeling the elastoplastic constitutive relation of expansive soil

更新时间：2026-06-25

- Numerical modeling the elastoplastic constitutive relation of expansive soil
- Vol. 27, Issue 10期　刊出日, (2006)
- 作者机构：
  
  1. 武汉大学土木建筑学院,武汉,430072
  2. 华中科技大学土木工程与力学学院,武汉,430074
  3. 水利部长江勘测技术研究所,武汉,430000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB115
- Online First：29 November 2013，
  
  Published：2006
- 稿件说明：
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REN Qing-yang, ZHU Yi-wen, WANG Jing-tao, et al. Numerical modeling the elastoplastic constitutive relation of expansive soil[J]. 2006, 27(10期　刊出日).
DOI：

REN Qing-yang, ZHU Yi-wen, WANG Jing-tao, et al. Numerical modeling the elastoplastic constitutive relation of expansive soil[J]. 2006, 27(10期　刊出日). DOI：

摘要

按照数值建模理论，建立了不同含水率条件下膨胀土的应力-应变关系。通过可视化绘出了在整个应力场（p，q）中的三维应力-应变关系曲面和屈服轨迹。经过对比可见含水率的变化对膨胀土本构关系的影响是明显的。未使用传统的塑性势理论，而是采用数值建模方法，既克服了寻找塑性势解析表达式的困难，又可以任意选择含水率等初始条件，从而使建立的本构数值模型能够真实地反映膨胀土的变形过程

Abstract

Based on the numerical modeling constitutive law of rock and soil

the stress-strain relations of expansive soil of the Linhuaigang Dam in Anhui Province with different water content were established; and the three dimensional surface of stress-strain relation in the whole stress field (p

q) were drawn through visualization. By comparison

it is found that the effect of different water content on the constitutive relation of expansive soil is obvious. The theory of plastic potential is not used in this paper

in the numerical modeling not only the difficult of seeking analytical expression of plastic potential is overcome

but also the initial condition

such as water content can be chosen freely. Therefore

the deformation of expansive soil could be really described by using the constitutive model provided by the numerical modeling.

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REN Qing-yang1

ZHU Yi-wen1

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LIU Te-hong2

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