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Large-scale 3D SSI Analysis using KIESSI-3D Program

KIESSI-3D 프로그램을 이용한 대형 3차원 SSI 해석

  • Lee, Eun-Haeng (Department of Civil and Environmental Engineering, Chonnam National University) ;
  • Kim, Jae-Min (Department of Marine and Civil Engineering, Chonnam National University) ;
  • Seo, Choon-Gyo (Nuclear Civil & Architectural Engineering Dept., KEPCO E&C)
  • 이은행 (전남대학교 대학원 건설.환경공학과) ;
  • 김재민 (전남대학교 해양토목공학과) ;
  • 서춘교 (한국전력기술(주) 원자력토목건축기술그룹)
  • Received : 2013.10.30
  • Accepted : 2013.11.19
  • Published : 2013.12.31

Abstract

The soil-structure interaction(SSI) effect should be considered to accurately assess the seismic response of structure constructed on soft soil site other than the hard bedrock. Recently, the demand of SSI analysis has increased due to strengthening of the regulatory guidelines of nuclear power plant such as the USNRC SRP 3.7.2. In this study an accuracy and running time of the KIESSI-3D program for large-scale 3D SSI analysis were investigated. The seismic SSI analysis using the KIESSI-3D program was performed for several examples of large-scale three-dimensional soil-structure interaction system. The analysis results were compared with those of the ACS/SASSI program. Good agreements in transfer functions at selected locations showd that KIESSI-3D yields accurate solution for large-scale SSI problem. Moreover, it was found that running speed of the KIESSI-3D for large-scale 3D SSI analysis is much faster than that of the ACS/SASSI about 30~2000 times.

단단한 암반이 아닌 지반에 건설된 구조물의 지진응답을 정확하게 평가하기 위해서는 지반-구조물 상호작용(SSI)의 영향을 고려하여야 한다. 최근에는 USNRC SRP 3.7.2와 같은 원전설계분야의 규제지침 강화로 인해 SSI 해석의 필요성이 증가되고 있다. 이 연구에서는 대형 3차원 SSI 해석에 KIESSI-3D 프로그램을 사용한 사례를 제시하고 해석시간 및 정확성에 대한 토의를 하였다. 이를 위하여 대형 3차원 구조물 예제에 대한 SSI 해석을 수행하고 해석결과와 해석시간을 ACS/SASSI 프로그램과 비교하였다. 비교결과 KIESSI-3D 프로그램과 ACS/SASSI 프로그램에 의해 구한 구조응답의 전달함수가 거의 동일함을 보여 KIESSI-3D 프로그램의 정확성을 확인할 수 있었다. 아울러 해석시간 측면에서는 다중 쓰레드를 사용한 KIESSI-3D 프로그램(8개 쓰레드)이 단일 쓰레드를 사용한 ACS/SASSI 프로그램 보다 약 30배~2000배 빠른 성능을 보였다.

Keywords

References

  1. Amdahl, G.M. (1967) Validity of the Single Processor Approach to Achieving Large Scale Computing Capabilities, Proc. AFIPS, 30.
  2. Ghiocel Predictive Technologies (2009) ACS-SASSI: An Advanced Computational Software for 3D Dynamic Analysis Including Soil-Structure Interaction, Version 2.3, Ghiocel Predictive Technologies.
  3. Intel(R) Math Kernel Library (Intel(R)MKL)10.2 (2009) Reference Manual.
  4. Kim, J.M., Lee, E.H., Chung, K.Y., Seo, C.G. (2012) Applicability of KIESSI-3D Program for Soil-Structure Interaction Analysis, Proc. KSCE Conference.
  5. PARDISO Solver Project (2009) http://pardiso-project.org.
  6. Park, Hyo-Seon (1996) Analysis and Design of Large-scale Structures using Parallel Computing, Computational Structural Engineering, 33(3), pp.47-53.
  7. Ryu, J.S., Seo, C.G., Kim, J.M., Yun, C.B. (2010) Seismic Response Analysis of Soil-structure Interactive System using a Coupled Three-dimensional FE-IE Method, Nuclear Engineering and Design, 240, pp.1949-1966. https://doi.org/10.1016/j.nucengdes.2010.03.028
  8. Seo, C.G., Kim, J.M., (2012) KIESSI Program for 3-D Soil-Structure Interaction Analysis, Computational Structural Engineering, 25(3), pp.77-83.

Cited by

  1. Verification of Linear FE Model for Nonlinear SSI Analysis by Boundary Reaction Method vol.27, pp.2, 2014, https://doi.org/10.7734/COSEIK.2014.27.2.95