경계반력법을 이용한 지진격리 원전구조물의 비선형 지반-구조물 상호작용 해석
Nonlinear Soil-Structure Interaction Analysis of a Seismically Isolated Nuclear Power Plant Structure using the Boundary Reaction Method
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
This paper presents a detailed procedure for a nonlinear soil-structure interaction of a seismically isolated NPP(Nuclear Power Plant) structure using the boundary reaction method (BRM). The BRM offers a two-step method as follows: (1) the calculation of boundary reaction forces in the frequency domain on an interface of linear and nonlinear regions, (2) solving the wave radiation problem subjected to the boundary reaction forces in the time domain . For the purpose of calculating the boundary reaction forces at the base of the isolator, the KIESSI-3D program is employed in this study to solve soil-foundation interaction problem subjected to vertically incident seismic waves. Wave radiation analysis is also employed, in which the nonlinear structure and the linear soil region are modeled by finite elements and energy absorbing elements on the outer model boundary using a general purpose nonlinear FE program. In this study, the MIDAS/Civil program is employed for modeling the wave radiation problem. In order to absorb the outgoing elastic waves to the unbounded soil region, spring and viscous-damper elements are used at the outer FE boundary. The BRM technique utilizing KIESSI-3D and MIDAS/Civil programs is verified using a linear soil-structure analysis problem. Finally the method is applied to nonlinear seismic analysis of a base-isolated NPP structure. The results show that BRM can effectively be applied to nonlinear soil-structure interaction problems.
Abstract
This paper presents a detailed procedure for a nonlinear soil-structure interaction of a seismically isolated NPP(Nuclear Power Plant) structure using the boundary reaction method (BRM). The BRM offers a two-step method as follows: (1) the calculation of boundary reaction forces in the frequency domain on an interface of linear and nonlinear regions, (2) solving the wave radiation problem subjected to the boundary reaction forces in the time domain . For the purpose of calculating the boundary reaction forces at the base of the isolator, the KIESSI-3D program is employed in this study to solve soil-foundation interaction problem subjected to vertically incident seismic waves. Wave radiation analysis is also employed, in which the nonlinear structure and the linear soil region are modeled by finite elements and energy absorbing elements on the outer model boundary using a general purpose nonlinear FE program. In this study, the MIDAS/Civil program is employed for modeling the wave radiation problem. In order to absorb the outgoing elastic waves to the unbounded soil region, spring and viscous-damper elements are used at the outer FE boundary. The BRM technique utilizing KIESSI-3D and MIDAS/Civil programs is verified using a linear soil-structure analysis problem. Finally the method is applied to nonlinear seismic analysis of a base-isolated NPP structure. The results show that BRM can effectively be applied to nonlinear soil-structure interaction problems.
참고문헌 (20)
- "ASCE 4-12. Seismic analysis of safety-related nuclear structures and commentary", Draft Revision 16. ASCE, ~ (2012)
- Coleman J, "Nonlinear Time Domain Seismic Soil Structure Interaction (SSI) Analysis for Nuclear Facilities and Draft Appendix B of ASCE 4"
- "NUREG-xxxx. Technical consideration for seismic isolation of nuclear facilities", Draft. U.S. NRC. Feb, ~ (2013)
- Wolf J., "Dynamic soil-structure interaction analysis", pp.466~ (1985), Prentice-Hall, Inc
- Lysmer J, "SASSI: a system for analysis of soil-structure interaction - user’s manual" (1988), University of California
- Seo CG, "Introduction to KIESSI Program for Three Dimensional Soil-Structure Interaction Analysis", Computational Structural Engineering, 25(3), pp.77~83 (2012)
- 김재민, "비선형 지반-구조물 상호작용해석을 위한 새로운 복합법", 한국지진공학회논문집, 7(6), pp.1~7 (2003), 한국지진공학회
- Solution of nonlinear dynamic structural system based on a hybrid frequency-time-domain approach, "Kawamoto JD", MIT, Dept. of Civil Eng, ~, pp.Research Report R83-5 (1983)
- Bernal D, "A hybrid time frequency domain formulation for non-linear soil-structure interaction", Earthq. Eng. & Struct. Dyn, 27, pp.673~685 (1998)
- Bielak J, "Domain reduction method for three–dimensional earthquake modeling in localized regions. Part I: theory", Bulletin of the Seismological Society of America, 93(2), pp.817~824 (2003)
- Basu U., "Explicit finite element perfectly matched layer for transient three-dimensional elastic waves", Int. J. Numer. Meth. Engng, 77, pp.151~176 (2009)
- Development of a generalized methodology for soil-structure interaction analysis using nonlinear time-domain techniques, "Solberg JM", Lawrence Livermore National Laboratory, ~, pp.Report # LLNL-TR-635762 (2013)
- Tafazzoli N, "The NRC ESSI simulator program current status", SMiRT-22, ~ (2013)
- LSTC, "LS-DYNA user’s manual, Vols. 1 & 2, Version 971 R5", ~ (2010)
- Kim JM, "Boundary reaction method for nonlinear soil-structure interaction analysis", Proc. KSCE Conference (2013)
- 김재민, "경계반력법에 의한 비선형 SSI 해석을 위한 선형 FE 해석모델 검증", 한국전산구조공학회논문집, 27(2), pp.95~102 (2014), 한국전산구조공학회[DOI]
- "MIDAS/Civil"[URL]
- Deek AJ, "Axisymmetric time domain transmitting boundaries", Journal of Engineering Mechanics, ASCE, 120(1), pp.25~42 (1994)
- Kellezi L, "Local transmitting boundaries for transient elastic analysis", Soil Dynamics and Earthquake Engineering, 19, pp.533~547 (2000)
- Liu J, "Efficient procedure for seismic analysis of soil-structure interaction system", Tsinghua Science and Technology, 11, pp.625~631 (2006)