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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.32 No.1
- 발행연도
- 2019.1
- 수록면
- 67 - 77 (11page)
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초록· 키워드
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Pushover analysis captures the behavior of a structure from fully elastic to collapse. In this analysis, the structure is subjected to increasing lateral load with constant gravity one. Neglecting the effects of the higher modes and the changes in the vibration characteristics during the nonlinear analysis are the main obstacles of the proposed lateral load patterns. To overcome these drawbacks, whereas some methods have been presented to achieve updated lateral load distribution, these methods are not precisely capable to predict the response of structures, precisely. In this study, a new method based on optimization procedure is developed to obtain a lateral load pattern for which the difference between the floor displacements of pushover and Nonlinear Dynamic Analyses (NDA) is minimal. For this purpose, an optimization problem is considered and the genetic algorithm is applied to calculate optimal lateral load pattern. Three special moment resisting steel frames with different dynamic characteristics are simulated and their optimal load patterns are derived. The floor displacements of these frames subjected to the proposed and conventional load patterns are acquired and the accuracy of them is evaluated via comparing with NDA responses. The outcomes reveal that the proposed lateral load distribution is more accurate than the previous ones.
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참고문헌 (45)
참고문헌 신청
Akbas, B. / 2009 / An evaluation of energy response and cumulative plastic rotation demand in steel moment-resisting frames through dynamic/static pushover analyses / Struct. Des. Tall Special Build 18(4):405~426
Amini, M.A / 2018 / Adaptive Force-Based Multimode Pushover Analysis for Seismic Evaluation of Midrise Buildings / J. Struct. Eng 144(8):04018093
Antoniou, S / 2004 / Advantages and limitations of adaptive and non-adaptive force-based pushover procedures / J. Earthq. Eng 8(4):497~522
Antoniou, S / 2004 / Development and verification of a displacement-based adaptive pushover procedure / J. Eng 8(5):643~661
1996 / ATC-40 Report,, Seismic evaluation and retrofit of concrete buildings
Amini, M.A / 2018 / Adaptive Force-Based Multimode Pushover Analysis for Seismic Evaluation of Midrise Buildings / J. Struct. Eng 144(8):04018093
Antoniou, S / 2004 / Advantages and limitations of adaptive and non-adaptive force-based pushover procedures / J. Earthq. Eng 8(4):497~522
Antoniou, S / 2004 / Development and verification of a displacement-based adaptive pushover procedure / J. Eng 8(5):643~661
1996 / ATC-40 Report,, Seismic evaluation and retrofit of concrete buildings
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