납적층고무받침(LRB)으로 지지된 면진 원전 구조물의 수직방향 지진응답 분석
Analyses of Vertical Seismic Responses of Seismically Isolated Nuclear Power Plant Structures Supported by Lead Rubber Bearings
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참고문헌
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초록
It is very important to assure the seismic performance of equipment as well as building structures in seismic design of nuclear power plant(NPP). Seismically isolated structures may be reviewed mainly on the horizontal seismic responses. Considering the equipment installed in the NPP, the vertical earthquake responses of the structure also should be reviewed. This study has investigated the vertical seismic demand of seismically isolated structure by lead rubber bearings(LRBs). For the numerical evaluation of seismic demand of the base isolated NPP, the Korean standard nuclear power plant (APR1400) is modeled as 4 different models, which are supported by LRBs to have 4 different horizontal target periods. Two real earthquake records and artificially generated input motions have been used as inputs for earthquake analyses. For the study, the vertical floor response spectra(FRS) were generated at the major points of the structure. As a results, the vertical seismic responses of horizontally isolated structure have largely increased due to flexibility of elastomeric isolator. The vertical stiffness of the bearings are more carefully considered in the seismic design of the base-isolated NPPs which have the various equipment inside.
Abstract
It is very important to assure the seismic performance of equipment as well as building structures in seismic design of nuclear power plant(NPP). Seismically isolated structures may be reviewed mainly on the horizontal seismic responses. Considering the equipment installed in the NPP, the vertical earthquake responses of the structure also should be reviewed. This study has investigated the vertical seismic demand of seismically isolated structure by lead rubber bearings(LRBs). For the numerical evaluation of seismic demand of the base isolated NPP, the Korean standard nuclear power plant (APR1400) is modeled as 4 different models, which are supported by LRBs to have 4 different horizontal target periods. Two real earthquake records and artificially generated input motions have been used as inputs for earthquake analyses. For the study, the vertical floor response spectra(FRS) were generated at the major points of the structure. As a results, the vertical seismic responses of horizontally isolated structure have largely increased due to flexibility of elastomeric isolator. The vertical stiffness of the bearings are more carefully considered in the seismic design of the base-isolated NPPs which have the various equipment inside.
참고문헌 (16)
- Malushte SR, "Survey of past base isolation applications in nuclear power plants and challenges to industry regulatory acceptance", Proceedings of the 18th International Conference on Structural Mechanics in Reactor Technology Beijing, pp.3404~3410 (2005)
- The influence of base isolation on the seismic response of light secondary equipment, "Kelly JM.", Earthquake Engineering Research Center, College of Engineering, University of California, ~, pp.Report No. UCB (1982), EERC-81[DOI]
- Seismic response of light internal equipment in base isolated structures, "Kelly JM", Division of Structural Engineering and Structural Mechanics, Department of Civil Engineering, College of Engineering, University of California, ~, pp.Report No. UCB (1984), SESM-84[DOI]
- Huang Y, "Seismic Demands on Secondary Systems in Base-isolated Nuclear Power Plants", Earthquaek Engineering and Structural Dynamics, 36, pp.1741~1171 (2007)
- Vertical and 3D Isolation Systems: A Review with Emphasis on Their Use in Nuclear Structures, "Zhou Z", ~, pp.Transations, SMiRT-22
- Morishita M, "Three Dimensional Seismic Isolation Technology for Nuclear Power Plant Application", 9th World Seminar on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures, pp.135~154 (2005)
- Warn GP, "Vertical Stiffness of Elastomeric and Lead-Rubber Seismic Isolation Bearings", Journal of Structural Engineering, ASCE, 133(9), pp.1227~1236 (2007)
- Warn GP, "Vertical Earthquake Load on Seismic Isolation Systems in Bridges", Journal of Structural Engineering, ASCE, pp.1696~1704 (2008)
- Furukawa S, "Full-Scale Shaking Table Test of a Base-Isolated Medical Facility Subjected to Vertical Motions", Earthquake Engineering & Structural Dynamics, 42, pp.1931~1949 (2013)
- Faramarz Khoshnudian, "Seismic Response of Asymmetric Steel Isolated Structures Considering Vertical Component of Earthquakes", KSCE Journal of Civil Engineering, 17(6), pp.1333~1347 (2013), 대한토목학회
- Ryan KL, "Nonlinear Model for Lead-Rubber Bearings Including Axial-Load Effects", Journal of Engineering Mechanics, ASCE, 131(12), pp.1270~1278 (2014)
- Minimum Design Loads for Buildings and Other Structures, "ASCE", ~, pp.ASCE (2010), SEI 7-10
- Naeim F, "Design of Seismic Isolated Structures : From Theory to Practice" (1999), Wiley
- Takeuchi Y, "Development of an Evaluation Method for Seismic Isolation systems (Parts) The Basic Characteristics Test of a Seismic Isolation system for Nuclear Power Plant", 13th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures (2013)
- Technical Guidelines on Seismic Base Isolated System for Structural Safety and Design of Nuclear Power Plants, "Japan Electric Association", ~, pp.JEAG 4614 (2000)
- Computers and Structures Inc, "SAP2000 user’s manual", ~ (1999)