Earthquakes and Structures

  • 제14권5호
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  • Pages.477-492
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  • 2018
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A stochastic adaptive pushover procedure for seismic assessment of buildings

  • Jafari, Mohammad (Faculty of Civil and Environmental Engineering, Tarbiat Modares University) ;
  • Soltani, Masoud (Faculty of Civil and Environmental Engineering, Tarbiat Modares University)
  • 투고 : 2017.04.27
  • 심사 : 2018.04.16
  • 발행 : 2018.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Recently, the adaptive nonlinear static analysis method has been widely used in the field of performance based earthquake engineering. However, the proposed methods are almost deterministic and cannot directly consider the seismic record uncertainties. In the current study an innovative Stochastic Adaptive Pushover Analysis, called "SAPA", based on equivalent hysteresis system responses is developed to consider the earthquake record to record uncertainties. The methodology offers a direct stochastic analysis which estimates the seismic demands of the structure in a probabilistic manner. In this procedure by using a stochastic linearization technique in each step, the equivalent hysteresis system is analyzed and the probabilistic characteristics of the result are obtained by which the lateral force pattern is extracted and the actual structure is pushed. To compare the results, three different types of analysis have been considered; conventional pushover methods, incremental dynamic analysis, IDA, and the SAPA method. The result shows an admirable accuracy in predicting the structure responses.

키워드

참고문헌

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  1. A Nonlinear Static Procedure for the Seismic Design of Symmetrical Irregular Bridges vol.2020, pp.None, 2018, https://doi.org/10.1155/2020/8899705
  2. An energy-based approach to determine the yield force coefficient of RC frame structures vol.21, pp.1, 2018, https://doi.org/10.12989/eas.2021.21.1.037
  3. Evaluation of seismic demands of reinforced concrete frames with steel plate shear wall vol.174, pp.11, 2018, https://doi.org/10.1680/jstbu.18.00155