건축도시공간연구소

Architecture & Urban Research Institute

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한국지진공학회|논문집 2020년 7월

논문명 부구조시스템의 연계 효과를 고려한 구조물의 층응답스펙트럼 생성 / Generation of Floor Response Spectra Considering Coupling Effect of Primary and Secondary System
저자명 조성국 ; 아브히나브 굽타
발행사 한국지진공학회
수록사항 한국지진공학회 논문집, Vol.24 No.4(통권 136호) (2020-07)
페이지 시작페이지(179) 총페이지(9)
ISSN 1226-525X
주제분류 구조
주제어 ; Seismic qualification; Equipment; Floor Response Spectra (FRS); Coupling analysis; Modal synthesis
요약2 Seismic qualification of equipment including piping is performed by using floor response spectra (FRS) or in-structure response spectra (ISRS) as the earthquake input at the base of the equipment. The amplitude of the FRS may be noticeably reduced when obtained from coupling analysis because of interaction between the primary structure and the equipment. This paper introduces a method using a modal synthesis approach to generate the FRS in a coupled primary-secondary system that can avoid numerical instabilities or inaccuracies. The FRS were generated by considering the dynamic interaction that can occur at the interface between the supporting structure and the equipment. This study performed a numerical example analysis using a typical nuclear structure to investigate the coupling effect when generating the FRS. The study results show that the coupling analysis dominantly reduces the FRS and yields rational results. The modal synthesis approach is very practical to implement because it requires information on only a small number of dynamic characteristics of the primary and the secondary systems such as frequencies, modal participation factors, and mode shape ordinates at the locations where the FRS needs to be generated.
소장처 한국지진공학회
언어 한국어