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    Influence of various impact scenarios on the dynamic performance of concrete beam-column joints

    Access Status
    Fulltext not available
    Embargo Lift Date
    2024-05-23
    Authors
    Li, H.
    Chen, Wensu
    Huang, Z.
    Hao, Hong
    Ngo, Tang Tuan
    Pham, Thong
    Date
    2022
    Type
    Journal Article
    
    Metadata
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    Citation
    Li, H. and Chen, W. and Huang, Z. and Hao, H. and Ngo, T.T. and Pham, T.M. 2022. Influence of various impact scenarios on the dynamic performance of concrete beam-column joints. International Journal of Impact Engineering. 167: ARTN 104284.
    Source Title
    International Journal of Impact Engineering
    DOI
    10.1016/j.ijimpeng.2022.104284
    ISSN
    0734-743X
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/FL180100196
    URI
    http://hdl.handle.net/20.500.11937/91540
    Collection
    • Curtin Research Publications
    Abstract

    This study investigated dynamic performances of concrete beam-column joints under various impact loading scenarios including impact contact condition (i.e., impact directly or via an interlayer), impact location, and impact loading pattern (i.e., concentrated or distributed loads). The influence of impact contact conditions was experimentally studied by a pendulum impact testing system. The test results showed that the softer contact by using a rubber pad led to an impact force profile with a less prominent force peak but resulted in more flexural concrete cracks on the beam. Furthermore, the finite element models of beam-column joints under impact were developed and verified by the test results. Based on the calibrated numerical models, the effects of impact location and impact loading pattern on the dynamic performances of joints were investigated. It was found that the specimens exhibited more flexural-governed cracks as the impact location moved away from the joint area. In addition, the distributed impact loading pattern resulting from an impactor with a wider contact area caused higher impact force, larger displacement response of beam, and severer damage at joint area than those generated by the concentrated impact loading pattern of the same kinetic energy, indicating the distributed impact loading is a more dangerous impact scenario to the safety of beam-column joints.

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