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Analysis of Seismic Response by the Movement of the Plane Rotation Axis and the Core of Atypical Structures

비정형 구조물의 평면 회전축과 코어의 이동에 따른 지진응답분석

  • Lee, Da-Hye (Dep. of Architecture, Yeungnam University) ;
  • Kim, Hyun-Su (Division of Architecture, Sunmoon University) ;
  • Kang, Joo-Won (School of Architecture, Yeungnam University)
  • 이다혜 (영남대학교 일반대학원 건축학과) ;
  • 김현수 (선문대학교 건축학부) ;
  • 강주원 (영남대학교 건축학부)
  • Received : 2022.02.22
  • Accepted : 2022.03.10
  • Published : 2022.03.15

Abstract

When the center of stiffness and the center of mass of the structure differ under the seismic load, torsion is caused by eccentricity. In this study, an analysis model was modeled in which the positions of the core and the plane rotation axis of a 60-story torsional atypical structure with a plane rotation angle of 1 degree per floor were different. The structural behavior of the analysis model was analyzed, and the earthquake response behavior of the structure was analyzed based on the time history analysis results. As a result, as the eccentricity of the structure increased, the eccentricity response was amplified in the high-rise part, and the bending and torsional behavior responses were complex in the low-order vibration mode. As a result of the analysis, the maximum displacement and story drift ratio increased due to the torsional behavior. The maximum story shear force and the story absolute maximum acceleration showed similarities for each analysis model according to the shape of the vibration mode of the analysis model.

Keywords

Acknowledgement

이 논문은 2021년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임. (NRF-2020R1A2B5B01002117)

References

  1. Lee, C. H., & Kim, S. W., "Elastic Seismic Design of Steel Highrise Buildings in Regions of Moderate Seismicity", Journal of Korean Society of Steel Construction, Vol.18, No.5, pp.553-562, 2006
  2. Lee, D. H., Kim H. S., & Kang, J. W., "Analysis of the Static Characteristics of High-Rise Structures with Twisted Shape" Journal of Korean Association for Spatial Structures, Vol.20, No.4, pp.93-100, 2020 https://doi.org/10.9712/KASS.2020.20.4.93
  3. Han, S. W., Kim, T. O., & Ha, S. J., "Seismic Performance Evaluation of Special Moment Steel Frames with Torsional Irregularities-I Seismic Design", Journal of Korean Society of Steel Construction, Vol.29, No.5, pp.361-368, 2017 https://doi.org/10.7781/KJOSS.2017.29.5.361
  4. Lee, S. Y., & Lee, D. G., "An efficient Model for Prediction of the Torsional Effect of Multistory Building Structures" Proc. of 9th World Conference on Earthquake Engineering, Tokyo, Japan, 1988
  5. Lee, K. H., & Jeong, S. H., "Verification of the Torsional Amplification Factor for the Seismic Design of Torsionally Imbalanced Buildings", Journal of the Earthquake Engineering Society of Korea, Vol.14, No.6, pp.67-74, 2020 https://doi.org/10.5000/EESK.2010.14.6.067
  6. Jeong, S. H., & Lee, K. H., "A Study on the Relationship between the Eccentricity and the Level of Damage in the Seismic Response of Buildings with Plan Irregularities", Journal of the Earthquake Engineering Society of Korea, Vol.14, No.3, pp.49-57, 2010 https://doi.org/10.5000/EESK.2010.14.3.049
  7. Architectural Institute of Korea, Korean Design Standard (KDS 41), 2019
  8. Kim, J. R., & Kim, J. Y., "Analyses of Structural Behaviors According to Core Location in the Building with Symmetric Plan", Journal of the Korea Institute for Structural Maintenance and Inspection, Vol.24, No.1, pp.116-124, 2020 https://doi.org/10.11112/JKSMI.2020.24.1.116
  9. Kang, S. H., Hong, S. G., Park, H. G., & Chung, L., "Fundamental Period Formulas for Concrete Shear Wall Buildings" Journal of Earthquake Engineering Society of Korea, Vol.15, No.1, pp.29-38, 2011 https://doi.org/10.5000/EESK.2011.15.1.029