Structural Engineering and Mechanics

  • 제77권4호
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  • Pages.509-521
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  • 2021
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
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DOI QR Code

Study on mechanical behaviors of loose mortise-tenon joint with neighbouring gap

  • He, Jun-xiao (Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture) ;
  • Wang, Juan (School of Civil Engineering, Beijing Jiaotong University) ;
  • Yang, Qing-shan (School of Civil Engineering, Chongqing University) ;
  • Han, Miao (Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture) ;
  • Deng, Yang (Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture)
  • 투고 : 2020.01.15
  • 심사 : 2020.11.21
  • 발행 : 2021.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

The neighbouring gaps at the mortise-tenon joint in traditional timber structure, which leads to the complexity of the joint, are considered to impair the mechanical performance of the joint. In this paper, numerical simulation of loose joint was conducted to examine the deformation states, stress distributions, and bearing capacities, which was verified by full-scale test. On the basis of the experimental and numerical results, a simplified mechanics model with gaps has been proposed to present the bending capacity of the loose joint. Besides, the gap effects and parameter studies on the influences of tenon height, friction coefficient, elastic modulus and axial load were also investigated. As a result, the estimated relationship between moment and rotation angle of loose joint showed the agreement with the numerical results, demonstrating validity of the proposed model; The bending bearing capacity and rotational stiffness of loose joint had a certain drop with the increasing of gaps; and the tenon height may be the most important factor affecting the mechanical behaviors of the joint when it is subjected to repeated load; Research results can provide important references on the condition assessments of the existing mortise-tenon joint.

키워드

참고문헌

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