Earthquakes and Structures

  • 제15권3호
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  • Pages.243-251
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  • 2018
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Dynamic response of post-tensioned rocking wall-moment frames under near-fault ground excitation

  • Feng, Ruoyu (School of Aerospace Engineering, Tsinghua University) ;
  • Chen, Ying (School of Civil Engineering, Shandong University) ;
  • Cui, Guozhi (School of Civil Engineering, Shandong University)
  • 투고 : 2018.01.21
  • 심사 : 2018.06.03
  • 발행 : 2018.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

The dynamic responses of a rocking wall-moment frame (RWMF) with a post-tensioned cable are investigated. The nonlinear equations of motions are developed, which can be categorized as a single-degree-of-freedom (SDOF) model. The model is validated through comparison of the rocking response of the rigid rocking wall (RRW) and displacement of the moment frame (MF) against that obtained from Finite Element analysis when subjected ground motion excitation. A comprehensive parametric analysis is carried out to determine the seismic performance factors of the RWMF systems under near-fault trigonometric pulse excitation. The horizontal displacement of the RWMF system is compared with that of MF structures without RRW, revealing the damping effect of the RRW. Frame displacement spectra excited by trigonometric pulses and recorded earthquake ground motions are constructed. The effects of pulse type, mass ratio, frame stiffness, and wall slenderness variations on the displacement spectra are presented. The paper shows that the coupling with a RRW has mixed results on suppressing the maximum displacement response of the frame.

키워드

과제정보

연구 과제 주관 기관 : Chinese National Natural Science Foundation

참고문헌

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피인용 문헌

  1. Seismic performance analysis of rocking wall TMDs structure based on shaking table test vol.21, pp.1, 2018, https://doi.org/10.12989/eas.2021.21.1.023