Geomechanics and Engineering

  • 제13권5호
  • /
  • Pages.809-823
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Behaviour of a plane joint under horizontal cyclic shear loading

  • Dang, Wengang (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University) ;
  • Fruhwirt, Thomas (Institute of Geotechnics, TU Bergakademie Freiberg) ;
  • Konietzky, Heinz (Institute of Geotechnics, TU Bergakademie Freiberg)
  • 투고 : 2016.05.09
  • 심사 : 2017.05.16
  • 발행 : 2017.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper describes lab test results of artificial rock-like material samples having a plane joint. Cyclic shear tests were performed under different normal loads and different shear displacement amplitudes. For this purpose, multi-stage normal loading tests (30 kN, 60 kN, 90 kN, 180 kN, 360 kN and 480 kN) with cyclic excitation at frequency of 1.0 Hz and different shear displacement amplitudes (0.5 mm, 1.0 mm, 2.0 mm, 4.0 mm, 5.0 mm, and 8.0 mm) were conducted using the big shear box device GS-1000. Experimental results show, that shear forces increase with the increase of normal forces and quasi-static friction coefficient is larger than dynamic one. With the increase of normal loads, approaching the peak value of shear forces needs larger shear displacements. During each cycle the normal displacements increase and decrease (rotational behavior in every cycle). Peak angle of inclination increases with the increase of normal load. A phase shift between maximum shear displacement and maximum shear force is observed. The corresponding time shift decreases with increasing normal load and increases with increasing shear displacement amplitudes.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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