Empirical criterion for evaluating the peak shear strength 
of discontinuity with different joint wall strengths

ZHANG Zhi-fei; HUANG Man; TANG Zhi-cheng

doi:10.16285/j.rsm.2022.0410

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Empirical criterion for evaluating the peak shear strength of discontinuity with different joint wall strengths

更新时间：2026-06-25

- Empirical criterion for evaluating the peak shear strength of discontinuity with different joint wall strengths
- Vol. 44, Issue 2, Pages: 507-519(2023)
- 作者机构：
  
  1. 中国地质大学（武汉）工程学院,湖北,武汉,430074
  2. 绍兴文理学院土木工程学院,浙江,绍兴,312000
  3. 绍兴文理学院浙江省岩石力学与地质灾害重点实验室,浙江,绍兴,312000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2022.0410
  CLC： TU45
- Online First：17 February 2023，
  
  Published：2023
- 稿件说明：
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ZHANG Zhi-fei, HUANG Man, TANG Zhi-cheng. Empirical criterion for evaluating the peak shear strength of discontinuity with different joint wall strengths[J]. 2023, 44(2): 507-519.
DOI：

ZHANG Zhi-fei, HUANG Man, TANG Zhi-cheng. Empirical criterion for evaluating the peak shear strength of discontinuity with different joint wall strengths[J]. 2023, 44(2): 507-519. DOI： 10.16285/j.rsm.2022.0410.

摘要

长江三峡库区广泛发育着两侧岩性不同的不连续面（称为异性不连续面），研究其峰值剪切强度可为相关岩体的稳定性分析和评价提供理论依据。采用高强石膏浇注3组不同形貌且上、下壁面强度不同的不连续面试件，并在不同常法向应力下进行剪切试验。引入不连续面壁组合系数来综合量化不连续面壁的抗压强度和基本摩擦角对异性不连续面峰值剪切强度的影响，越小，上、下不连续面壁强度差异越大。异性不连续面的峰值剪切强度随的增加呈非线性增加，且在高法向应力下更为显著。在Barton公式的基础上，通过多元回归分析建立了估算异性不连续面峰值剪切强度的经验公式。采用天然和人工锯齿形异性不连续面的直剪试验结果对新公式做了进一步验证，试验剪切强度与新公式预测值吻合较好。简要分析了新公式在软硬互层岩质边坡稳定性评价中的应用。最后，讨论了Wu公式的适用性以及新公式的优点和不足。

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