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  • Effects of Seismic and Progressive Collapse Designs on the Vulnerability of RC Frame Structures

    Author(s)
    Lin, Kaiqi
    Li, Yi
    Lu, Xinzheng
    Guan, Hong
    Griffith University Author(s)
    Guan, Hong
    Year published
    2017
    Metadata
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    Abstract
    Buildings are exposed to multiple natural hazards over their service lives. Multihazard analysis and design of building structures has become a research hotspot worldwide. For these structures, earthquake and progressive collapse are two of the most commonly encountered hazards. However, little research has been conducted to examine the effects of the seismic and progressive collapse designs on the resistance of buildings against multiple hazards. In this study, a series of six-story reinforced concrete (RC) frames are considered, and their seismic and progressive collapse designs are performed independently according to the ...
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    Buildings are exposed to multiple natural hazards over their service lives. Multihazard analysis and design of building structures has become a research hotspot worldwide. For these structures, earthquake and progressive collapse are two of the most commonly encountered hazards. However, little research has been conducted to examine the effects of the seismic and progressive collapse designs on the resistance of buildings against multiple hazards. In this study, a series of six-story reinforced concrete (RC) frames are considered, and their seismic and progressive collapse designs are performed independently according to the corresponding design codes. Fragility curves are used to assess the seismic and progressive collapse resistance. The interactions between the two designs are discussed by analyzing the fragility curves and the collapse modes. Results show that the progressive collapse design of the RC frame may lead to an undesirable failure mode (i.e., strong-beam-weak-column) under earthquakes, which indicates that a seismic redesign is necessary subsequent to the progressive collapse design. Note that sequential use of different design codes for a structure may result in material waste yet a suboptimal structural performance. Therefore, a design method by individually considering different hazards is unsuitable for the multihazard prevention and mitigation of building structures. A comprehensive and integrated design method for multihazards is thus in great need. The outcome of this study will lay a foundation for future multihazard analysis and design of building structures.
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    Journal Title
    Journal of Performance of Constructed Facilities
    Volume
    31
    Issue
    1
    DOI
    https://doi.org/10.1061/(ASCE)CF.1943-5509.0000942
    Subject
    Civil engineering
    Civil engineering not elsewhere classified
    Other engineering
    Publication URI
    http://hdl.handle.net/10072/370766
    Collection
    • Journal articles

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