Three-parameter twin ?2 strength criterion based on ultimate stress ratio and its application

CHEN Si-li; LI Yan-yu; ZHOU Hui; HU Da-wei

doi:10.16285/j.rsm.2016.1725

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Three-parameter twin ?2 strength criterion based on ultimate stress ratio and its application

更新时间：2026-06-25

- Three-parameter twin ?2 strength criterion based on ultimate stress ratio and its application
- Vol. 39, Issue 6, Pages: 1948-1954(2018)
- 作者机构：
  
  1. 沈阳工业大学建筑与土木工程学院,辽宁,沈阳,110870
  2. 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,湖北,武汉,430071
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.1725
  CLC： TU452
- Online First：03 July 2018，
  
  Published：2018
- 稿件说明：
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CHEN Si-li, LI Yan-yu, ZHOU Hui, et al. Three-parameter twin ?2 strength criterion based on ultimate stress ratio and its application[J]. 2018, 39(6): 1948-1954.
DOI：

CHEN Si-li, LI Yan-yu, ZHOU Hui, et al. Three-parameter twin ?2 strength criterion based on ultimate stress ratio and its application[J]. 2018, 39(6): 1948-1954. DOI： 10.16285/j.rsm.2016.1725.

摘要

为了更好地分析复杂应力下的强度问题，作为岩石、混凝土材料强度理论的完善和补充，利用双强度理论，推导出了一个考虑静水压力和主剪应力面上正应力影响的三参数双强度准则，给出了该准则的数学表达式，进行了几种应力状态下的理论预测与现有试验数据的对比分析。结果表明，不同的极限应力比和值对应着不同材料的强度准则；应力状态的强度低于应力状态下的强度；在的双轴受压应力下，其双轴压缩强度大于单轴压缩强度；在三轴压缩的应力状态下，当处于某一固定值且较小时，随着的增加而逐步增大，而较大时，则随着的增加而逐步减小；理论预测值与现有的花岗岩、红砂岩、软弱砂岩以及混凝土等材料的部分试验数据吻合较好。

Abstract

In order to understand the strength failure under complex stresses

and apply the strength theory to more materials

such as rocks and concrete

by the twin strength theory

the three-parameter twin strength criterion based on the hydrostatic pressure and the normal stress on the surface of main shear stress has been proposed

and the mathematical formula has been deduced. Then the comparative analyses between the theories under different stresses with the existing experimental data have been carried out. The results show that the ratios and under different ultimate stresses vary with different strength criteria respectively and the strength under condition of is less than that the strength under condition of . In the biaxial compressive stress

the biaxial compressive strength is larger than the uniaxial one . In triaxial compression stress

given fixed and smaller

increases gradually with the increase of

and given relatively larger

decreases gradually with the increase of . The theoretical predictions can reflect some experimental data of the granite

red sandstone

soft sandstone

concrete and other materials.

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