Earthquakes and Structures

  • 제26권6호
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  • Pages.433-447
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  • 2024
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Comparison of methods to estimate storey stiffness and storey strength in buildings

  • A.R.Vijayanarayanan (Amrita School of Engineering Coimbatore) ;
  • M. Saravanan (Structural Engineering Research Center, CSIR) ;
  • M. Surendran (Structural Engineering Research Center, CSIR)
  • 투고 : 2021.08.26
  • 심사 : 2024.03.27
  • 발행 : 2024.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

During earthquakes, regular buildings perform better than irregular buildings. In general, seismic design codes define a regular building using estimates of Storey Stiffness and Storey Strength. At present, seismic design codes do not recommend a specific method to estimate these parameters. Consequently, any method described in the literature can be applied to estimate the aforementioned parameters. Nevertheless, research has demonstrated that storey stiffness and storey strength vary depending on the estimation method employed. As a result, the same building can be regular or irregular, depending on the method employed to estimate storey stiffness and storey strength. Hence, there is a need to identify the best method to estimate storey stiffness and storey strength. For this purpose, the study presents a qualitative and quantitative evaluation of nine approaches used to determine storey stiffness. Similarly, the study compares six approaches for estimating storey strength. Subsequently, the study identifies the best method to estimate storey stiffness and storey strength using results of 350 linear time history analyses and 245 nonlinear time history analyses, respectively. Based on the comparison, it is concluded that the Fundamental Lateral Translational Mode Shape Method and Isolated Storey Method - A Particular Case are the best methods to estimate storey stiffness and storey strength of low-to-mid rise buildings, respectively.

키워드

과제정보

The authors thank Dr. P. Sunitha of IIIT Hyderabad for the valuable discussion towards improving the present work. Also, the second and the third authors thank the Director, CSIR-SERC for constant support and encouragement. Further, the authors value the help offered by colleagues and staff of the steel structural laboratory towards creating a collegial work environment.

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