Constitutive relationship of intact loess considering structural effect

CHEN Cun-li; HE Jun-fang; YANG Peng

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Constitutive relationship of intact loess considering structural effect

更新时间：2026-06-25

- Constitutive relationship of intact loess considering structural effect
- Vol. 28, Issue 11, (2007)
- 作者机构：
  
  西安理工大学岩土工程研究所,西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441
- Online First：18 October 2013，
  
  Published：2007
- 稿件说明：
移动端阅览
CHEN Cun-li, HE Jun-fang, YANG Peng. Constitutive relationship of intact loess considering structural effect[J]. 2007, 28(11).
DOI：

CHEN Cun-li, HE Jun-fang, YANG Peng. Constitutive relationship of intact loess considering structural effect[J]. 2007, 28(11). DOI：

摘要

将三轴应力条件下同一应变的原状黄土主应力差与扰动饱和黄土主应力差之比定义了一个定量化结构性参数，它综合反映了土的排列和胶结特征所表现出的综合结构势。结构性参数的变化量与轴应变关系可以用双曲线来拟合，由此所得到的结构性参数表达式可以反映围压、湿度、密度、应力和应变对结构性的影响。结构性参数对不同含水率下原状黄土的应力-应变曲线有很好的归一化作用，归一化后的结构性应力-应变曲线可用符合邓肯-张模型的扰动饱和土应力-应变关系来描述。在扰动饱和土本构关系中引入结构性参数所得到的原状黄土本构关系能够考虑原状黄土结构性的影响，且可以描述软化型和硬化型的应力-应变关系，计算结果与试验结果之间吻合较好。

Abstract

A quantitative comprehensive structural parameter is defined using ratio of principal stress difference of intact loess to that of disturbed saturated loess under triaxial stress condition

which can not only reflect arrangement but also coherent structure of soil particles. The relationship between variation quantity of the structural parameter - and axial strain can be fitted with hyperbola ( is initial structural parameter)

equation of the structural parameter obtained with which can reveal the influence of confining pressure

water content

density

stress and strain on structure of intact loess. The structural parameter can make stress- strain curves of intact loess under different water content normalize to structural stress-strain curves which can be described using that of disturbed saturated loess at the same confining pressure simulated with the model proposed by Duncan and Chang. A constitutive relation describing stress-strain behaviour of intact loess is presented by introducing the structural parameter to that of disturbed saturated loess

which can consider structural effect and describe both hardening and softening stress-strain behaviour. Its rationality is confirmed by the agreement of results calculated by using this relation with that tested.

关键词

Keywords

references

Views

1359

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Simulation of constitutive curves for strain-softening rock in triaxial compression

Research on relationship between structure and deformation property of intact loess

Experimental studies on mechanical behavior of refuse samples

Realization of rock mass nonlinear strength characteristics in unified strength theory based on brittle-shear strength analysis

Law study of dynamic discharge water of marine soft clay under impact loading

Related Author

SHEN Hua-zhang

WANG Shui-lin

LIU Quan-sheng

CHEN Cun-li

HU Zai-qiang

GAO Peng

LIU Rong

SHI Jian-yong

Related Institution

State Key Laboratory of Geomechanics and Geotechanical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

Geotechnical Investigation And Surveying Institute of Nuclear Industry

Research Institute of Geotechnical Engineering, Hohai University

College of Hydraulic and Civil Engineering, Yangzhou University

State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education, University of Science and Technology Beijing

AI问答

⁰