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首页> 外文会议>Asia-Pacific Conference on Shock amp; Impact Loads on Structures; 20031112-14; Changsha, Hunan,(CN) >EVALUATION OF THE BLAST RESISTANCE OF METAL DECK ROOFS
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EVALUATION OF THE BLAST RESISTANCE OF METAL DECK ROOFS

机译：金属甲板屋面的抗爆炸性评估

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摘要

In the Blast Effects Analyses (BEAs) for some airport terminal buildings, determining the vulnerability to blast loads of their metal deck roofs is important in assessing the risks from a terrorist attack. Predictions determining the blast resistance of this class of roof are difficult since its failure is predicated on the response of a fairly flimsy structure that is usually attached to the building framing with only tack welds or light fasteners. In this study, the blast resistance of commercial-off-the-shelf (COTS) metal deck roofs is investigated by examining the results obtained from a high-fidelity physics based (HFPB) finite element model. A range of blast loads and deck parameters were considered in evaluating roof deck performance. Key failure modes and criteria suitable for predicting deck failure were discussed and demonstrated with results generated by the HFPB models. Based on the analyses, pressure-impulse (P-I) curves are produced suitable for assessment or design of steel roof decks subjected to blast loads.
机译：在一些机场航站楼的爆炸影响分析（BEA）中，确定其金属甲板屋顶爆炸载荷的脆弱性对于评估恐怖袭击的风险很重要。很难确定此类屋顶的抗爆炸性，因为其破坏是根据相当脆弱的结构的响应来预测的，该结构通常仅通过点焊或轻紧固件连接到建筑物框架。在这项研究中，通过检查从基于高保真物理（HFPB）的有限元模型获得的结果，研究了商用现货（COTS）金属甲板屋顶的抗爆炸性。在评估屋顶甲板性能时，考虑了一系列爆炸载荷和甲板参数。讨论了适用于预测甲板故障的关键故障模式和标准，并通过HFPB模型生成的结果进行了演示。根据分析，得出压力脉冲（P-I）曲线，适用于评估或设计承受爆炸载荷的钢屋面板。

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