Study of post-peak stress-strain curve of rock mass with multiple penetrative crack sets based on fractured rock samples

TONG Xing-hua; HAN Jian-xin; LI Shu-cai; LI Shu-chen; YANG Wei-min

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Study of post-peak stress-strain curve of rock mass with multiple penetrative crack sets based on fractured rock samples

更新时间：2026-06-25

- Study of post-peak stress-strain curve of rock mass with multiple penetrative crack sets based on fractured rock samples
- Vol. 34, Issue 7, (2013)
- 作者机构：
  
  1. 山东大学岩土与结构工程研究中心,济南,250061
  2. 山东财经大学数学与数量经济学院,济南,250014
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU45
- Online First：15 July 2013，
  
  Published：2013
- 稿件说明：
移动端阅览
TONG Xing-hua, HAN Jian-xin, LI Shu-cai, et al. Study of post-peak stress-strain curve of rock mass with multiple penetrative crack sets based on fractured rock samples[J]. 2013, 34(7).
DOI：

TONG Xing-hua, HAN Jian-xin, LI Shu-cai, et al. Study of post-peak stress-strain curve of rock mass with multiple penetrative crack sets based on fractured rock samples[J]. 2013, 34(7). DOI：

摘要

在岩土工程中，裂隙岩体经常处于峰后变形状态，研究裂隙岩体的峰后应力-应变关系对预测结构的稳定性有重要意义。基于峰后软化阶段强度参数的逐渐演化行为，首先提出一个求岩石峰后应力-应变关系和裂隙峰后应力-切向位移关系的一般方法。然后采用摩尔-库仑强度准则，以岩石的最大主应变和裂隙的切向位移作为软化参数，假设强度参数为软化参数的分段线性函数，分岩体沿裂隙滑移破坏和沿岩石剪切破坏两种情况，提出多组贯穿裂隙岩体峰后应力-应变关系式的求法。最后，在算例中，分岩体沿裂隙滑移破坏和沿岩石剪切破坏两种情况给出了裂隙岩体的峰后应力-应变曲线，讨论了裂隙的平均间距、法向刚度和剪切刚度对峰后应变的影响。结果表明，裂隙的平均间距、法向刚度和剪切刚度越小，裂隙岩体的轴向应变越大。

Abstract

In geotechnical engineering

fractured rock mass is often in the post-peak deformational state. It is important for predicting stability of structure to study post-peak stress-strain relationship of fractured rock mass. Based on the evolution of post-peak strength parameters

firstly

a method for solving the relations of post-peak stress-strain of rock and stress-shear displacement of crack is proposed. Then using Mohr-Coulomb strength criterion

regarding maximum principal strain of rock and shear displacement of crack as softening parameters

assuming the strength parameter as a piecewise linear function of softening parameters

in the two cases that the rock mass fails along the fracture and through the rock

the method for solving relation of post-peak stress-strain of rock mass with multiple penetrative crack sets is presented. Finally

in case study

the post-peak stress-stain curves are given in the two cases that the rock mass fails along the fracture and through the rock; and the effects of mean space

normal stiffness and shear stiffness of cracks on post-peak strain are discussed. The results show that the smaller the mean space

normal stiffness and shear stiffness of cracks are

the larger the axial strain of fractured rock mass is.

关键词

Keywords

references

Views

1570

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Stability classification of roadway roof in fractured rock mass based on blockiness theory

Research on critical problem for fracture network propagation and evolution with multifield coupling of fractured rock mass

Analysis of representative element volume size based on 3D fracture network

A dynamic anti-sliding stability analysis method for abutment fractured rock mass based on safety index criterion

Strength development model for slurry-like mud treated by physicochemical combined method considering preloading stress

Related Author

CHEN Qing-fa

WEI Cai-shou

NIU Wen-jing

CHEN De-yan

FENG Chun-hui

FAN Qiu-yan

LIU Quan-sheng

LIU Xue-wei

Related Institution

College of Resources and Metallurgy, Guangxi University

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

Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University

State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology

College of Civil Engineering, Chongqing University

AI问答

⁰