Effect of varying normal stiffness on soft rock joints under cyclic shear loads
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F23%3A00577330" target="_blank" >RIV/68145535:_____/23:00577330 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1996-1944/16/12/4272" target="_blank" >https://www.mdpi.com/1996-1944/16/12/4272</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma16124272" target="_blank" >10.3390/ma16124272</a>
Alternative languages
Result language
angličtina
Original language name
Effect of varying normal stiffness on soft rock joints under cyclic shear loads
Original language description
The evaluation of changes in shear resistance on soft (or weathered) rock joints under cyclic shear loads with constant normal load (CNL) and constant normal stiffness (CNS) significantly contributes to increasing the safety and stability of rock slopes and underground structures. In this study, a series of cyclic shear tests were conducted on simulated soft rock joints with regular (15°-15°, 30°-30°) and irregular (15°-30°) asperities under different normal stiffnesses (kn). The results indicated that the first peak shear stress increases with the increase in kn up to the normal stiffness of the joints (knj). Beyond knj, no significant change was observed in the peak shear stress. The difference in peak shear stress between regular (30°-30°) and irregular joints (15°-30°) increases as kn increases. The minimum difference of peak shear stress between regular and irregular joints was observed (8.2%) under CNL and the maximum difference was found (64.3%) on knj under CNS. The difference in peak shear stress between the first and subsequent cycles significantly increases as both the joint roughness and kn increases. A new shear strength model is developed to predict peak shear stress of the joints for different kn and asperity angles under cyclic shear loads.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20701 - Environmental and geological engineering, geotechnics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
16
Issue of the periodical within the volume
12
Country of publishing house
CH - SWITZERLAND
Number of pages
20
Pages from-to
4272
UT code for WoS article
001014459700001
EID of the result in the Scopus database
2-s2.0-85163893158