Investigations on Stress Relaxation Behavior of Structural Planes Using Shear Tests

In this work, the stress relaxation behavior of rock joints with different slope ratios was investigated using the shear tests. The results showed that the relaxation curves of the joints can be divided into three stages, i.e., the instantaneous relaxation stage, attenuation relaxation stage and sta...

Full description

Saved in:
Bibliographic Details
Published in:Mechanics of solids 2022-04, Vol.57 (2), p.340-351
Main Authors: Zhang, H., Gao, C. H., Wang, J. Q.
Format: Article
Language:English
Subjects:
Classical Mechanics
Maxwell's equations
Physics
Physics and Astronomy
Shear tests
Stress relaxation
Viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, the stress relaxation behavior of rock joints with different slope ratios was investigated using the shear tests. The results showed that the relaxation curves of the joints can be divided into three stages, i.e., the instantaneous relaxation stage, attenuation relaxation stage and stable relaxation stage. Furthermore, a nonlinear Maxwell equation between viscosity coefficient and time was derived, the change trend of the initial viscosity coefficient was found, and the corresponding theoretical calculations agreed with the testing results. Based on the present results, a termed relaxation stress peak method was proposed to determine the long-term strength of such joints.
ISSN:0025-6544
1934-7936
DOI:10.3103/S0025654422020133