Earthquakes and Structures

  • 제12권2호
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  • Pages.177-189
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  • 2017
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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A simplified normalized cumulative hysteretic energy spectrum

  • Sun, Guohua (School of Civil Engineering, Suzhou University of Science and Technology) ;
  • Gu, Qiang (School of Civil Engineering, Suzhou University of Science and Technology) ;
  • Fang, Youzhen (School of Civil Engineering, Suzhou University of Science and Technology)
  • 투고 : 2016.06.17
  • 심사 : 2016.12.25
  • 발행 : 2017.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

For energy-based seismic design, a simplified normalized cumulative hysteretic energy spectrum proposed for obtaining hysteretic energy as energy demand is the main objective in this paper. The dimensionless parameter, ${\beta}_{Eh}$, is presented to express hysteretic energy indirectly. The ${\beta}_{Eh}$ spectrum is constructed directly through subtracting the hysteretic energy of single degree-of-freedom (SDOF) system energy equation. The simplified ${\beta}_{Eh}$ spectral formulation as well as pseudo-acceleration spectrum of modern seismic provisions is developed based on the regression analysis of the large number of seismic responses of SDOF system subjected to earthquake excitations, which considers the influence of earthquake event, soil type, damping ratio, and ductility factor. The relationship between PGV and PGA is established according to the statistical analysis relied on a total of 422 ground motion records. The combination of ${\beta}_{Eh}$ spectrum and PGV/PGA equation allows determining the cumulative hysteretic energy as a main aseismic design indicator.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China, Natural Science Foundation of JiangSu Province

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피인용 문헌

  1. Mathematical Expression of Design Hysteretic Energy Spectra Based on Chinese Soil Type vol.2019, pp.None, 2017, https://doi.org/10.1155/2019/3483516
  2. A new practical equivalent linear model for estimating seismic hysteretic energy demand of bilinear systems vol.70, pp.3, 2017, https://doi.org/10.12989/sem.2019.70.3.289
  3. Derivation of yield force coefficient for RC frames considering energy balance and P-delta effects vol.79, pp.4, 2017, https://doi.org/10.12989/sem.2021.79.4.429