Earthquakes and Structures

  • 제9권5호
  • /
  • Pages.937-956
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  • 2015
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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 distribution estimation for isolated structures using stochastic response database

  • Eem, Seung-Hyun (Disaster Management HPC Research, Korea Institute of Science and Technology Information) ;
  • Jung, Hyung-Jo (Department of Civil and Environmental Engineering, KAIST)
  • 투고 : 2014.03.10
  • 심사 : 2015.09.08
  • 발행 : 2015.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

Seismic isolation systems decouple structures from ground motions to protect them from seismic events. Seismic isolation devices have been implemented in many full-scale buildings and bridges because of their simplicity, economic effectiveness, inherent stability, and reliability. It is well known that the most uncertain aspect for obtaining the accurate responses of an isolated structure from seismic events is the seismic loading itself. It is needed to know the seismic response distributions of the isolated structure resulting from the randomness of earthquakes when probabilistic designing or probabilistic evaluating an isolated structure. Earthquake time histories are useful and often an essential element for designing or evaluating isolated structures. However, it is very challenging to gather the design and evaluation information for an isolated structure from many seismic analyses. In order to evaluate the seismic performance of an isolated structure, numerous nonlinear dynamic analyses need to be performed, but this is impractical. In this paper, the concept of the stochastic response database (SRD) is defined to obtain the seismic response distributions of an isolated structure instantaneously, thereby significantly reducing the computational efforts. An equivalent model of the isolated structure is also developed to improve the applicability and practicality of the SRD. The effectiveness of the proposed methodology is numerically verified.

키워드

과제정보

연구 과제번호 : 초고성능컴퓨팅기반 국가현안대응체계 구축

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피인용 문헌

  1. Seismic fragility assessment of isolated structures by using stochastic response database vol.14, pp.5, 2015, https://doi.org/10.12989/eas.2018.14.5.389
  2. Large strain nonlinear model of lead rubber bearings for beyond design basis earthquakes vol.51, pp.2, 2015, https://doi.org/10.1016/j.net.2018.11.001
  3. Seismic Performance of Piping Systems of Isolated Nuclear Power Plants Determined by Numerical Considerations vol.14, pp.13, 2015, https://doi.org/10.3390/en14134028
  4. Experimental study on the floor responses of a base-isolated frame structure via shaking table tests vol.253, pp.None, 2015, https://doi.org/10.1016/j.engstruct.2021.113763