Earthquakes and Structures

  • 제25권6호
  • /
  • Pages.455-467
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  • 2023
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic response control of irregular asymmetric structure with voided slabs by distributed tuned rotary mass damper devices

  • Shujin Li (School of Civil Engineering and Architecture, Wuhan University of Technology) ;
  • Irakoze Jean Paula (School of Civil Engineering and Architecture, Wuhan University of Technology) ;
  • Ling Mao (School of Civil Engineering and Architecture, Wuhan University of Technology)
  • 투고 : 2023.08.10
  • 심사 : 2023.11.06
  • 발행 : 2023.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study focuses on demonstrating the effectiveness of vibration control of tuned rotary mass damper (TRMD) for reducing the bidirectional and torsional response of the irregular asymmetric structure with voided slabs under earthquake excitations. The TRMD arranged in plane of one-story eccentric structure is proposed as a distributed tuned rotary mass damper (DTRMD) system. Lagrange's equation is used to derive the equations of motion of the controlled system. The optimum position and number of TRMD are numerically investigated under harmonic excitation and the control effects of different distributions are discussed. Furthermore, a shaking table test is conducted under different excitation cases, including free vibration, forced vibration and seismic wave to investigate the absorption performance of the device. The numerical simulations of different distributions of the TRMDs show that the DTRMDs are more effective in reduction of the displacement response of the asymmetric structure under the same mass ratio, even when the degree of eccentricity becomes large. However, with small degree of eccentricity, the unreasonable asymmetrical arrangement may cause the increase of the peak value of the rotational angular displacement. Finally, the experimental investigations exhibit similar results of translational displacement of the structure. It is concluded that the vibration of the irregular asymmetric structure can be controlled more economically and effectively by reducing the mass ratio through reducing the quantity of TRMDs at the high stiffness end.

키워드

과제정보

The authors would like to acknowledge the support provided by the National Natural Science Foundation of China (Grant no. 52378313).

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