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자료유형
학술저널
저자정보
Shayanfar, Mohsen Ali (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology) Ashoory, Mansoor (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology) Bakhshpoori, Taha (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology) Farhadi, Basir (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제47권 제1호
발행연도
2013.1
수록면
119 - 129 (11page)

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Nonlinear Static Procedures (NSPs) have been developed as a practical tool to estimate the seismic demand of structures. Several researches have accomplished to minimize errors of NSPs, namely pushover procedures, in the Nonlinear Time History Analysis (NTHA), as the most exact method. The most important issue in a typical pushover procedure is the pattern and technique of loading which are extracted based on structural dynamic fundamentals. In this paper, the coefficients of modal force combination is focused involving a meta-heuristic optimization algorithm to find the optimum load pattern which results in a response with minimum amount of errors in comparison to the NTHA counterpart. Other parameters of the problem are based on the FEMA recommendations for pushover analysis of building structures. The proposed approach is implemented on a high-rise 20 storey concrete moment resisting frame under three earthquake records. In order to demonstrate the effectiveness and robustness of the studied procedure the results are presented beside other well-known pushover methods such as MPA and the FEMA procedures, and the results show the efficiency of the proposed load patterns.

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