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    Performance of Hurricane-Resistant Housing during the 2022 Arabi, Louisiana, Tornado

    Source: Journal of Structural Engineering:;2024:;Volume ( 150 ):;issue: 005::page 04024029-1
    Author:
    David B. Roueche
    ,
    Guangzhao Chen
    ,
    Mariantonieta Gutierrez Soto
    ,
    Sabarethinam Kameshwar
    ,
    Amir Safiey
    ,
    Trung Do
    ,
    Franklin T. Lombardo
    ,
    Jordan O. Nakayama
    ,
    Brandon M. Rittelmeyer
    ,
    Alejandro Palacio-Betancur
    ,
    Garrett Demaree
    DOI: 10.1061/JSENDH.STENG-12986
    Publisher: ASCE
    Abstract: Mitigating tornado damage remains a critical challenge for communities throughout much of the United States. Enhanced construction techniques typically used in hurricane-prone regions are often recommended as at least part of the solution, but the effectiveness of these techniques lacks empirical evaluation. This study investigates the performance of modern wood-frame residential structures in Arabi, LA, constructed to hurricane-resistant standards, that were impacted by a strong tornado on March 22, 2022. Field teams deployed beginning March 25, 2022, just three days after the tornado touched down, capturing perishable data on the building performance using vehicle-mounted surface-level panoramic cameras, forensic engineering investigations, and unmanned aerial systems. This paper describes the field deployments and identifies common failure mechanisms observed by the field teams. Analytical fragility functions are developed based on the load path observations and compared to empirical fragility functions generated from linking the building performance observations with wind speed estimates at each building derived from a parametric wind field model conditioned to tree-fall patterns. The study finds that despite the frequent use of hurricane-resistant hardware, such as hurricane straps and anchor bolts, key weak links elsewhere in the load path compromised the resistance and led to premature failures. The agreement between the empirically- and analytically-derived fragility functions was lacking, demonstrating the challenges that remain in understanding near-surface tornado wind loading and structural response. Nonetheless, the study provides a consensus framework for future tornado assessments that can help improve our understanding of tornado loading through the utilization of reconnaissance data. Further, the study findings on deficiencies in the load paths of homes in hurricane-prone regions have practical value to risk assessments and future construction practices.
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      Performance of Hurricane-Resistant Housing during the 2022 Arabi, Louisiana, Tornado

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4296838
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    contributor authorDavid B. Roueche
    contributor authorGuangzhao Chen
    contributor authorMariantonieta Gutierrez Soto
    contributor authorSabarethinam Kameshwar
    contributor authorAmir Safiey
    contributor authorTrung Do
    contributor authorFranklin T. Lombardo
    contributor authorJordan O. Nakayama
    contributor authorBrandon M. Rittelmeyer
    contributor authorAlejandro Palacio-Betancur
    contributor authorGarrett Demaree
    date accessioned2024-04-27T22:31:07Z
    date available2024-04-27T22:31:07Z
    date issued2024/05/01
    identifier other10.1061-JSENDH.STENG-12986.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4296838
    description abstractMitigating tornado damage remains a critical challenge for communities throughout much of the United States. Enhanced construction techniques typically used in hurricane-prone regions are often recommended as at least part of the solution, but the effectiveness of these techniques lacks empirical evaluation. This study investigates the performance of modern wood-frame residential structures in Arabi, LA, constructed to hurricane-resistant standards, that were impacted by a strong tornado on March 22, 2022. Field teams deployed beginning March 25, 2022, just three days after the tornado touched down, capturing perishable data on the building performance using vehicle-mounted surface-level panoramic cameras, forensic engineering investigations, and unmanned aerial systems. This paper describes the field deployments and identifies common failure mechanisms observed by the field teams. Analytical fragility functions are developed based on the load path observations and compared to empirical fragility functions generated from linking the building performance observations with wind speed estimates at each building derived from a parametric wind field model conditioned to tree-fall patterns. The study finds that despite the frequent use of hurricane-resistant hardware, such as hurricane straps and anchor bolts, key weak links elsewhere in the load path compromised the resistance and led to premature failures. The agreement between the empirically- and analytically-derived fragility functions was lacking, demonstrating the challenges that remain in understanding near-surface tornado wind loading and structural response. Nonetheless, the study provides a consensus framework for future tornado assessments that can help improve our understanding of tornado loading through the utilization of reconnaissance data. Further, the study findings on deficiencies in the load paths of homes in hurricane-prone regions have practical value to risk assessments and future construction practices.
    publisherASCE
    titlePerformance of Hurricane-Resistant Housing during the 2022 Arabi, Louisiana, Tornado
    typeJournal Article
    journal volume150
    journal issue5
    journal titleJournal of Structural Engineering
    identifier doi10.1061/JSENDH.STENG-12986
    journal fristpage04024029-1
    journal lastpage04024029-18
    page18
    treeJournal of Structural Engineering:;2024:;Volume ( 150 ):;issue: 005
    contenttypeFulltext
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