Steel and Composite Structures

  • 제18권2호
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  • Pages.481-496
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  • 2015
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental study on lead extrusion damper and its earthquake mitigation effects for large-span reticulated shell

  • Yang, M.F. (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University) ;
  • Xu, Z.D. (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University) ;
  • Zhang, X.C. (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University)
  • 투고 : 2012.11.11
  • 심사 : 2014.07.29
  • 발행 : 2015.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

A Lead Extrusion Damper (LED) is experimentally studied under various frequencies and displacement amplitudes. Experimental results show that the force-displacement hysteresis loops of the LED are close to rectangular and the force-velocity hysteresis loops exhibit nonlinear hysteretic characteristic. Also, the LED can provide consistent energy dissipation without any stiffness degradation. Based on the experimental results, a mathematical model is then proposed to describe the effects of frequency and displacement on property of LED. It can be proved from the comparison between experimental and numerical results that the mathematical model can accurately describe the mechanical behavior of LED. Subsequently, the seismic responses of the Schwedler reticulated shell structure with LEDs are analyzed by ANSYS software, in which three different installation forms of LEDs are considered. It can be concluded that the LED can effectively reduce the displacement and acceleration responses of this type of structures.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation, National Construction Ministry

참고문헌

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