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دینامیک خاک و مهندسی زلزله 2011
جزئیات رویداد
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همایش ، رویداد ، ژورنال
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  • comparative seismic performance of steel frames retrofitted with buckling-restrained braces through the application of force-based and displacement-based approaches

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     this paper presents an analytical study aimed at evaluating the feasibility of using buckling-restrained braces as a retrofit scheme for existing multi-bay multi-story steel buildings. for that purpose, the seismic response of four two-dimensional frame models representative of typical steel buildings designed in a region of high seismicity was analyzed prior to and after including buckling-restrained braces as a retrofit strategy. the braces were designed following force-based and displacement-based approaches. the structural performance of the different versions of the frames was evaluated by subjecting each one to a set of twenty ground motions representative of the design earthquake with 10% exceedance probability in fifty years. it was observed that buckling-restrained braces allow for an efficient reduction in the peak drift demands in the retrofitted frames. however, since the beneficial effect of the braces cannot be fully controlled under a force-based design approach, it was concluded that a displacement-based design approach is the best option to achieve optimum structural performance.

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