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    Quantitative Resistance Assessment of Steel Girder Bridges Subjected to Blast Loads

    Source: Journal of Bridge Engineering:;2024:;Volume ( 029 ):;issue: 009::page 04024069-1
    Author:
    Ahmad Alsendi
    ,
    Christopher D. Eamon
    DOI: 10.1061/JBENF2.BEENG-6821
    Publisher: American Society of Civil Engineers
    Abstract: The blast resistance of a typical two-lane steel girder highway bridge structural system was modeled using a nonlinear finite-element approach that considered material damage, fracture, and separation. Critical blast scenarios were based on field observations of terrorist attacks on bridges in Iraq, while system failure was defined in terms of practical emergency serviceability criteria used on actual blast-damaged bridges. The blast resistance of various design parameters was assessed, including the number of girders, deck concrete strength, reinforcement ratio, slab thickness, girder and reinforcement yield strength, girder sectional dimensions, and pier column width. The presented approach uniquely quantifies structural system blast resistance in terms of the charge weight that can be applied at different locations until failure. A sensitivity analysis was conducted to determine the most influential design parameters. It was found that system blast capacity was primarily influenced by the number of girders and girder yield strength, while additional significant parameters were deck compressive strength, deck thickness, web stiffener width, and girder depth. Secondary parameters were deck reinforcement ratio, girder flange, and web thickness, while deck reinforcement yield stress was found to be insignificant. Based on the results, recommendations for improving blast resistance are provided.
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      Quantitative Resistance Assessment of Steel Girder Bridges Subjected to Blast Loads

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4298651
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    contributor authorAhmad Alsendi
    contributor authorChristopher D. Eamon
    date accessioned2024-12-24T10:17:46Z
    date available2024-12-24T10:17:46Z
    date copyright9/1/2024 12:00:00 AM
    date issued2024
    identifier otherJBENF2.BEENG-6821.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4298651
    description abstractThe blast resistance of a typical two-lane steel girder highway bridge structural system was modeled using a nonlinear finite-element approach that considered material damage, fracture, and separation. Critical blast scenarios were based on field observations of terrorist attacks on bridges in Iraq, while system failure was defined in terms of practical emergency serviceability criteria used on actual blast-damaged bridges. The blast resistance of various design parameters was assessed, including the number of girders, deck concrete strength, reinforcement ratio, slab thickness, girder and reinforcement yield strength, girder sectional dimensions, and pier column width. The presented approach uniquely quantifies structural system blast resistance in terms of the charge weight that can be applied at different locations until failure. A sensitivity analysis was conducted to determine the most influential design parameters. It was found that system blast capacity was primarily influenced by the number of girders and girder yield strength, while additional significant parameters were deck compressive strength, deck thickness, web stiffener width, and girder depth. Secondary parameters were deck reinforcement ratio, girder flange, and web thickness, while deck reinforcement yield stress was found to be insignificant. Based on the results, recommendations for improving blast resistance are provided.
    publisherAmerican Society of Civil Engineers
    titleQuantitative Resistance Assessment of Steel Girder Bridges Subjected to Blast Loads
    typeJournal Article
    journal volume29
    journal issue9
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/JBENF2.BEENG-6821
    journal fristpage04024069-1
    journal lastpage04024069-15
    page15
    treeJournal of Bridge Engineering:;2024:;Volume ( 029 ):;issue: 009
    contenttypeFulltext
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