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http://dx.doi.org/10.5000/EESK.2003.7.4.031

Seismic Retrofitting of Cabinet Structures in Nuclear Power Plant  

이계희 (목포해양대학교 해양시스템공학부)
김재민 (여수대학교 건설환경공학부)
김상윤 (한국원자력안전기술원)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.4, 2003 , pp. 31-37 More about this Journal
Abstract
This paper presents the methodologies for seismic retrofitting of cabinet equipment which can be employed to resolve the USI A-46 problem related to seismic qualification of old nuclear power plant. To obtain accurate dynamic characteristics of a cabinet structure, three types of structural modeling are introduced and the their free vibration modes are compared. Three types of seismic retrofitting scenarios, such as 1) the installation of bracing, 2) installation of damper, 3) installation of tuned mass damper(TMD), are established and evaluated for the decrease of ICRS(In Cabinet Reponse Spectrum). In the cases of 1) ＆ 2), since the retrofitted structures show larger ICRS than that of the original structure, the careful considerations are need in the application of these methods. Though the installation of TMD shows the best retrofitting result, the construction of analysis model that indicate the accurate vibration modes of real structure is estimated the essential step of this retrofitting method.
Keywords
USIA-46; USIA-46; cabinet structure; reduction of ICRS; seismic retrofitting;
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