DOI QR코드

DOI QR Code

Seismic Capacity according to Structural System of High-rise Apartment

고층 아파트 구조시스템에 따른 내진성능 분석

  • Lee, Minhee (Division of Structural Design, Chang Minwoo Structural Consultants) ;
  • Cho, So-Hoon (Division of Structural Design, Chang Minwoo Structural Consultants) ;
  • Kim, Jong-Ho (Division of Structural Design, Chang Minwoo Structural Consultants) ;
  • Kim, Hyung-Do (Muti-Disaster Countermeasures Organization, Korea Institute of Civil Engineering and Building Technology)
  • 이민희 ((주)창민우구조컨설탄트 설계본부) ;
  • 조소훈 ((주)창민우구조컨설탄트 설계본부) ;
  • 김종호 ((주)창민우구조컨설탄트 설계본부) ;
  • 김형도 (한국건설기술연구원 복합재난대응연구단)
  • Received : 2019.02.15
  • Accepted : 2019.02.27
  • Published : 2019.06.30

Abstract

The structural system of domestic high-rise apartments can be divided into two parts; the core wall system, which is composed of walls concentrated in the center and the shear wall system, which comprises a great number of walls distributed in the plan. In order to analyze the lateral behavior of each system, buildings with typical domestic high-rise apartment plans were selected and nonlinear static analysis was performed to investigate the their collapse mechanism. From the force-displacement relation derived from nonlinear static analysis, response modification factor was evaluated by calculating the overstrengh and ductility factor, which are important in the seismic response. The ductility of core wall system is small, but as it is governed by wind load, its overstrength is greatly estimated, and its response modification factor is calculated by the overstrengh factor. Due to a large number of walls, shear wall system has a large ductility, making the response modification factor considerably large.

국내 고층 아파트의 구조시스템은 크게 다수의 벽체가 분산적으로 배치되어 있는 내력벽 시스템과 중앙 코어벽 시스템으로 구분할 수 있다. 각각 시스템에 따른 횡방향 거동을 분석하기 위해 본 연구는 국내 고층 아파트 중 대표적인 평면을 갖는 대상 건물을 선정하고, 비선형 정적해석을 수행하여 붕괴메커니즘을 살펴보았다. 비선형 정적해석을 통해 도출된 힘-변위관계로부터 지진응답에 있어서 중요한 요소인 초과강도계수 및 연성도계수를 산정하여 반응수정계수를 평가하였다. 중앙 코어벽 시스템은 연성도는 작지만, 풍하중에 의해 지배되어 초과강도가 크게 산정돼 초과강도계수에 의해 반응수정계수가 산정되었고, 내력벽 시스템은 벽량이 많아 연성도가 크기 때문에 상당힌 큰 반응수정계수가 산정된다.

Keywords

References

  1. AIK (2017) Guidelines for Performance-Based Seismic Design of Residential Buildings, Architectural Institute of Korea.
  2. ATC (1995) ATC-19 Structural Response Modification Factors, Applied Technology Council.
  3. Computer & Structures Inc. (2016) Nonlinear Analysis and Performance Assessment for 3D Structures-User Guide Version 6.
  4. KCI (2012) Korea Structural Concrete Design Code-2012, Korea Concrete Institute. Seoul. Korea.
  5. Krawinkler, H., Nassar, A.A. (1992) Seismic Design Based on Ductility and Cumulative Damage Demands and Capacities, Nonlinear Seismic Analysis and Design of Reinforced Concrete Buildings, pp.27-47.
  6. Lee, D.G, Cho, S.H., Ko, H., Kim, T.J. (2006) Overstrengh and Response Modification Factor in Low Seismic Regions, J. Earthq. Eng. Soc. Korea, 10(3), pp.57-64.
  7. Miranda, E., Bertero V.V. (1994) Evaluation of Stregnth Reduction Factors for Earthquake-Resistant Design, Earthq. Spectra. EERI, 10(2), pp.357-379. https://doi.org/10.1193/1.1585778
  8. Newmark, N.M., Hall, W.J. (1982) Earthquake Spectra And Design, Earthquake Engineering Research Institute.