Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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A Nonlinear Dynamic Analysis Algorithm Including Base-Isolator with Elasto-Plastic Material Properties

탄소성 재료특성을 갖는 기초면진시스템을 고려한 비선형 동적해석 알고리즘

  • 정성진 (한남대 건축공학과) ;
  • 이민섭 (한남대 건축공학과 대학원) ;
  • 박세희 (한남대 건축공학과 대학원)
  • Received : 2012.07.05
  • Published : 2012.10.25
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Abstract

Base-isolation system is the most general isolation system used in seismic design of building structure. One of various methods to analyze building structure with base-isolation system is modelling the base-isolation system as a spring element with 6 degree of freedom(d.o.f.). Since in a base-isolated structures specially designed isolation systems have to provide the required flexibility and energy dissipation capacity, spring elements also should consider highly nonlinear behavior. Therefore, for the development of a computer program considering base-isolation system, spring element with 6 d.o.f., where shearing d.o.f. and bending d.o.f. should be coupled, elasto-plastic material in the dynamic analysis, and algorithm for computer programming are studied first. This paper presents an analytical model and solution algorithm developed specially for the analysis of base-isolated building structures with elasto-plastic isolation systems. A computer program sNs based on this study is developed, and the analysis results using sNs are compared with the results using SAP2000 for the verification of sNs.

Keywords

Acknowledgement

Supported by : 한남대학교

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