Shear strength mechanism and constitutive model of municipal solid waste

FENG Shi-jin; CHEN Yun-min; GAO Li-ya; GAO Guang-yun

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Shear strength mechanism and constitutive model of municipal solid waste

更新时间：2026-06-25

- Shear strength mechanism and constitutive model of municipal solid waste
- Vol. 28, Issue 12, (2007)
- 作者机构：
  
  1. 同济大学地下建筑与工程系,上海,200092
  2. 浙江大学岩土工程研究所,杭州,310027
  3. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
  4. 同济大学建筑工程系,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：18 October 2013，
  
  Published：2007
- 稿件说明：
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FENG Shi-jin, CHEN Yun-min, GAO Li-ya, et al. Shear strength mechanism and constitutive model of municipal solid waste[J]. 2007, 28(12).
DOI：

FENG Shi-jin, CHEN Yun-min, GAO Li-ya, et al. Shear strength mechanism and constitutive model of municipal solid waste[J]. 2007, 28(12). DOI：

摘要

根据城市固体废弃物（简称MSW）的大三轴固结排水剪试验结果，延伸岩土工程中研究土体的概念和方法，研究MSW的剪切强度机制。MSW与大变形相关的强度特性主要是由于含有大量的纤维状成分所致，在剪切过程中试样总的抗剪能力由剪切面上的摩擦力和纤维状加筋相的拉力所产生。MSW的摩擦强度主要由3部分构成：纤维状成分与土颗粒之间的摩擦，纤维状成分之间的摩擦，和土颗粒之间的摩擦。基于MSW的剪切强度特性，采用邓肯-张本构模型来描述MSW的应力-应变关系。

Abstract

The consolidation drained shear tests for municipal solid waste (MSW) samples were conducted using large-scale triaxial apparatus: Based on the test results using traditional geotechnical concepts and methods

the shear strength mechanism of MSW is investigated. The shear strength properties of MSW related to large deformation mainly resulted from the reinforcing effect of fiber materials .The shear resistance of MSW includes friction function and tensile force provided by fiber materials. The friction strength of MSW is composed of three parts: the friction function between fiber phase and particle phase

the friction one between fiber phases

and the friction one between particle phases. Based on the shear strength property of MSW

the stress-strain curve is simulated by Duncan-Chang constitutive model.

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