长江科学院院报 ›› 2016, Vol. 33 ›› Issue (4): 81-85.DOI: 10.11988/ckyyb.20150119

• 岩土工程 • 上一篇    下一篇

三种Mohr强度准则的对比分析

熊良宵1,虞利军2   

  1. 1.宁波大学 建筑工程与环境学院, 浙江 宁波 315211;
    2.浙江省岩土基础公司, 浙江 宁波 315040
  • 收稿日期:2015-02-03 出版日期:2016-04-01 发布日期:2016-04-08
  • 作者简介:熊良宵(1982-), 男, 江西九江人, 副教授, 博士, 主要从事岩石力学与地下工程方面的教学与研究工作, (电话)15968030959(电子信箱)xiongliangxiao@nbu.edu.cn。
  • 基金资助:
    国家自然科学基金项目(41541021,41002108);长江科学院开放研究基金资助项目(CKWV2014207/KY)

Comparative Study of Three Mohr Strength Criteria

XIONG Liang-xiao1, YU Li-jun2   

  1. 1.Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China;
    2.Zhejiang Geotechnical & Foundation Company, Ningbo 315040, China
  • Received:2015-02-03 Online:2016-04-01 Published:2016-04-08

摘要: 简述了Mohr-Coulomb强度准则、抛物线型Mohr强度准则和双曲线型Mohr强度准则,并采用3种高应力下岩石的真三轴试验结果对这3种强度准则进行对比分析。研究结果表明在高应力条件下,硬岩的试验值与Mohr-Coulomb强度准则和双曲线型Mohr强度准则的预测值均比较接近。Mohr-Coulomb强度准则是线性强度准则,双曲线型Mohr-Coulomb强度准则是非线性强度准则,因此,可认为双曲线型Mohr强度准则更适合用于描述高应力条件下岩石的强度变形特征。

关键词: 岩石力学, 高应力, Mohr-Coulomb强度准则, 抛物线型Mohr强度准则, 双曲线型Mohr强度准则, 真三轴试验

Abstract: Comparative analysis of Mohr-Coulomb strength criterion, parabolic Mohr strength criterion and hyperbolic Mohr strength criterion was presented in this paper based on the result of true triaxial test on three kinds of rocks under high stress. Research results show that in the presence of high geostress, the predicted values of hard rock using Mohr-Coulomb strength criterion and hyperbolic Mohr strength criterion are close with the experimental value. Mohr-Coulomb strength criterion is a linear strength criterion; whereas hyperbolic Mohr-Coulomb strength criterion is a nonlinear strength criterion. Therefore, the hyperbolic Mohr strength criterion is more suitable for describing the strength and deformation characteristics of rock under high stress.

Key words: rock mechanics, high geostress, Mohr-Coulomb strength criterion, parabolic Mohr strength criterion, hyperbolic Mohr strength criterion, true triaxial test

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