Skip to main content
Top
Published in:

01-10-2024 | Original Paper

Effect of load frequency and amplitude of displacement on soft synthetic rock joints under cyclic shear loads

Authors: S. M. Mahdi Niktabar, K. Seshagiri Rao, Amit Kumar Shrivastava, Jiří Ščučka

Published in: Bulletin of Engineering Geology and the Environment | Issue 10/2024

Log in

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

If dynamic loads propagate in the rock mass, they can generate vibrations or cyclic movements along the joints with different frequency and displacement. Hence, evaluation of rock joints behaviour under different cyclic movements significantly contributes to increasing the safety and stability of rock mass. In this study a series of cyclic shear tests was conducted on soft synthetic rock joints (with asperity angle of 30°- 30°) by shear apparatus to investigate the effects of shear load frequency and amplitude of displacement on the joint. Varying load frequencies (0.01, 0.05 and 0.1 Hz,) and displacement amplitudes (± 4, ± 6, and ± 8 mm) for the three different normal stresses (0.1, 0.5 and 1 MPa) were applied. The results indicated that the first peak shear stress on the joint was significantly affected by the frequency of cyclic shear load and the subsequent peaks of shear stress were largely influenced by the amplitude of displacement. Reduction of post peak shear stress was significant for the first cycle as the load frequency increased. For low normal stress, shear load frequency of 0.05 Hz and one-third of asperity base length as displacement were the certain values that shear mechanism changed on slopes of the joint asperities. Shear mechanism also demonstrated that asperity diminishing did not depend on load direction at high frequency. Whereas, at low frequency of loads, it depended on the direction of starting cyclic load. Comparison of shear strength envelopes indicated an opposite behaviour of the joint between load frequencies and displacement amplitudes.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Appendix
Available only for authorised users
Literature
go back to reference Barla G, Barbero M, Scavia C, Zaninetti A (1990) Direct shear testing of single joints under dynamic loading. In: Barton N, Stephansson O (eds) Rock Joints. A. A. Balkema, Rotterdam, pp 447–454 Barla G, Barbero M, Scavia C, Zaninetti A (1990) Direct shear testing of single joints under dynamic loading. In: Barton N, Stephansson O (eds) Rock Joints. A. A. Balkema, Rotterdam, pp 447–454
go back to reference Gillette DR, Sture S, Ko HK, Gould M, Scott G (1983) Dynamic behavior of rock joints. In: Proceedings of the 24th US symposium on rock mechanics, pp 163–79 Gillette DR, Sture S, Ko HK, Gould M, Scott G (1983) Dynamic behavior of rock joints. In: Proceedings of the 24th US symposium on rock mechanics, pp 163–79
go back to reference Hassani FP, Scoble MJ (1985) Frictional mechanism and properties of rock discontinuities. In: Paper on fundamental of rock joints proceeding of the international symposium on fundamental of rock joints, Lulea Sweden Centek Pub, Bjorkliden, pp 15–20 Hassani FP, Scoble MJ (1985) Frictional mechanism and properties of rock discontinuities. In: Paper on fundamental of rock joints proceeding of the international symposium on fundamental of rock joints, Lulea Sweden Centek Pub, Bjorkliden, pp 15–20
go back to reference Homand-Etienne F, Lefeˆvre F, Belem T, Souley M (1999) Rock joints behaviour under cyclic direct shear tests. In: Amadei, Kranz, Scott, Smealie (eds) Rock mechanics for industry, vol 2. Balkema, Rotterdam, pp 399–406 Homand-Etienne F, Lefeˆvre F, Belem T, Souley M (1999) Rock joints behaviour under cyclic direct shear tests. In: Amadei, Kranz, Scott, Smealie (eds) Rock mechanics for industry, vol 2. Balkema, Rotterdam, pp 399–406
go back to reference Nguyen VM (2013) Static and dynamic behaviour of joints in schistose rock: lab testing and numerical simulation. Ph.D. dissertation, Geotechnical Institute, TU Bergakademie Freiberg Nguyen VM (2013) Static and dynamic behaviour of joints in schistose rock: lab testing and numerical simulation. Ph.D. dissertation, Geotechnical Institute, TU Bergakademie Freiberg
go back to reference Patton FD (1966) Multiple modes of shear failure in rock and related materials. Ph.D.dissertation, University of Illinois, Urbana–Champaign Patton FD (1966) Multiple modes of shear failure in rock and related materials. Ph.D.dissertation, University of Illinois, Urbana–Champaign
go back to reference Zheng BW, Qi SW, Guo SF, Huang XL (2015) The influence of shear deformation velocity on the strength characteristics of rock joints. In: 13th International congress of rock mechanics, 10-143 May, Montreal Zheng BW, Qi SW, Guo SF, Huang XL (2015) The influence of shear deformation velocity on the strength characteristics of rock joints. In: 13th International congress of rock mechanics, 10-143 May, Montreal
Metadata
Title
Effect of load frequency and amplitude of displacement on soft synthetic rock joints under cyclic shear loads
Authors
S. M. Mahdi Niktabar
K. Seshagiri Rao
Amit Kumar Shrivastava
Jiří Ščučka
Publication date
01-10-2024
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 10/2024
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-024-03864-x

Other articles of this Issue 10/2024

Bulletin of Engineering Geology and the Environment 10/2024 Go to the issue