Earthquakes and Structures

  • 제11권1호
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  • Pages.25-43
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  • 2016
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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 of spring-damper-rolling systems with concave friction distribution

  • Wei, Biao (School of Civil Engineering, Central South University) ;
  • Wang, Peng (School of Civil Engineering, Central South University) ;
  • He, Xuhui (School of Civil Engineering, Central South University) ;
  • Jiang, Lizhong (School of Civil Engineering, Central South University)
  • 투고 : 2016.03.31
  • 심사 : 2016.05.27
  • 발행 : 2016.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

The uneven distribution of rolling friction coefficient may lead to great uncertainty in the structural seismic isolation performance. This paper attempts to improve the isolation performance of a spring-damper-rolling isolation system by artificially making the uneven friction distribution to be concave. The rolling friction coefficient gradually increases when the isolator rolls away from the original position during an earthquake. After the spring-damper-rolling isolation system under different ground motions was calculated by a numerical analysis method, the system obtained more regular results than that of random uneven friction distributions. Results shows that the concave friction distribution can not only dissipate the earthquake energy, but also change the structural natural period. These functions improve the seismic isolation efficiency of the spring-damper-rolling isolation system in comparison with the random uneven distribution of rolling friction coefficient, and always lead to a relatively acceptable isolation state even if the actual earthquake significantly differs from the design earthquake.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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피인용 문헌

  1. Seismic Isolation Characteristics of a Friction System vol.46, pp.4, 2018, https://doi.org/10.1520/JTE20160598
  2. Performance of bi-directional elliptical rolling rods for base isolation of buildings under near-fault earthquakes 2018, https://doi.org/10.1177/1369433217726896
  3. Methodology for the simultaneous optimization of location and parameters of friction dampers in the frequency domain pp.1029-0273, 2018, https://doi.org/10.1080/0305215X.2018.1428318
  4. The effect of base isolation and tuned mass dampers on the seismic response of RC high-rise buildings considering soil-structure interaction vol.17, pp.4, 2016, https://doi.org/10.12989/eas.2019.17.4.425
  5. Analysis of an Isolation System with Vertical Spring-viscous Dampers in Horizontal and Vertical Ground Motion vol.10, pp.4, 2020, https://doi.org/10.3390/app10041411