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Modeling of Rock Joints Under Cyclic Loading Conditions Using Discontinuous Deformation Analysis

Authors
  • Ma, Shuqi1, 2
  • He, Chuan1
  • Zhao, Zhiye2
  • Nie, Wen2
  • Zhu, Xing3
  • Zhang, Zhenyu4
  • 1 Southwest Jiaotong University, Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Chengdu, 610031, People’s Republic of China , Chengdu (China)
  • 2 Nanyang Technological University, School of Civil and Environmental Engineering, Singapore, 639789, Singapore , Singapore (Singapore)
  • 3 Chengdu University of Technology, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu, 610059, People’s Republic of China , Chengdu (China)
  • 4 Chongqing University, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing, 400044, People’s Republic of China , Chongqing (China)
Type
Published Article
Journal
Rock Mechanics and Rock Engineering
Publisher
Springer Vienna
Publication Date
Jan 20, 2017
Volume
50
Issue
5
Pages
1205–1215
Identifiers
DOI: 10.1007/s00603-016-1158-y
Source
Springer Nature
Keywords
License
Yellow

Abstract

The shear strength of rock joints is an important factor to be considered when analyzing the stability of jointed rock mass. Rock joints tend to have smaller shear resistances in the reverse shearing than that of the forward shearing. A conceptual model describing the general shear behavior of rock joints under cyclic loading and the Barton–Bandis joint model considering the surface roughness degradation are implemented into the two-dimensional discontinuous deformation analysis (DDA) model. The modified DDA model is empirically validated by cyclic shear tests on two types of rock joints. Numerical simulations agree well with the experimental results, indicating that the DDA model is capable of describing the varying shear behaviors of rock joints subjected to cyclic loading conditions.

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