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Study on constitutive model of fractured rock masses by using statistical strength theory
  • +3
  • xin chen,
  • Wei Gao,
  • tianyang He,
  • Shuangshuang Ge,
  • Pengfei Ma,
  • Cong Zhou
xin chen
Hohai University
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Wei Gao
Hohai University
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tianyang He
Hohai University
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Shuangshuang Ge
Hohai University
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Pengfei Ma
Hohai University
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Cong Zhou
Southeast University
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Abstract

By using the basic principle of the continuous damage mechanics as a reference, together with the statistical strength theory based on the Weibull distribution, a new constitutive model of fractured rock masses for deep underground engineering is proposed. In this model, a new definition of the fracture degree Ft has been proposed for the first time, which can quantitatively describe the fracturing process of a fractured rock mass. Based on the results of laboratory tests and numerical simulations for fractured rock mass specimens, the constitutive model with different fracture degrees are verified. Moreover, the applicability of two yield criteria (the M-C and D-P criteria) for describing the mesoscopic strength of rocks is analyzed. Finally, the effects of the random distribution parameters on the constitutive model are discussed in detail. The results show that the theoretical results agree well with the experimental and numerical results, and the constitutive model with the D-P criterion is better than the model with the M-C criterion.
01 Aug 2022Submitted to Mathematical Methods in the Applied Sciences
02 Aug 2022Assigned to Editor
02 Aug 2022Submission Checks Completed
10 Aug 2022Reviewer(s) Assigned