节理粗糙度系数和尺寸对结构面剪切及特征强度的影响。

Effect of joint roughness coefficient and size on shear and characteristic strengths of structural planes.

机构信息

School of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang, China.

Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province, Shaoxing, Zhejiang, China.

出版信息

PLoS One. 2022 Apr 21;17(4):e0265916. doi: 10.1371/journal.pone.0265916. eCollection 2022.

DOI:10.1371/journal.pone.0265916

PMID:35446877

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9023063/

Abstract

Joint roughness coefficients (JRCs) influence the shear and characteristic strengths of structural planes; however, the relationship model of this influence is yet to be derived. This study investigates 11 numerical simulation programs using a realistic failure process analysis software. The influence of size and JRC on the shear strengths of the structural planes was studied. The stress-strain curves of different JRCs and their sizes were analyzed. Mathematical models of the shear strength of structural planes and JRC and sizes were formulated and proposed, and their expressions were obtained. Moreover, mathematical models of JRC and the characteristic size and strength of the structural planes were established.

摘要

节理粗糙度系数 (JRC) 影响结构面的剪切和特征强度；然而，这种影响的关系模型尚未推导出来。本研究使用现实的破坏过程分析软件调查了 11 个数值模拟程序。研究了尺寸和 JRC 对结构面剪切强度的影响。分析了不同 JRC 和尺寸的应力-应变曲线。提出并建立了结构面剪切强度和 JRC 与尺寸的数学模型，并得到了它们的表达式。此外，还建立了 JRC 与结构面特征尺寸和强度的数学模型。