Experimental analysis of debris distribution of masonry panels subjected to long duration blast loading
Experimental analysis of debris distribution of masonry panels subjected to long duration blast loading
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DOI：
10.1016/j.engstruct.2016.10.054
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发表时间：
2017
影响因子：
5.5
通讯作者：
R. Keys;S. Clubley
中科院分区：
文献类型：
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作者：
R. Keys;S. Clubley
结构的爆炸荷载是一个复杂的系统，它依赖于结构和爆炸波的大量参数。即使是最简单的结构，其大小和形状的微小变化也会对爆炸产生很大的影响;此外，爆炸波的压力或持续时间的微小变化也会大大改变其与特定结构的相互作用。本文，作为一个更大的深入的研究的一部分，调查的破坏模式和碎片分布的砌体面板进行爆炸荷载的正相持续时间通常超过100毫秒。对10块不同几何形状的砌体板进行了3次爆炸试验，爆炸荷载的峰值静超压分别为55 kPa和110 kPa，正相持续时间分别为200 ms和150 ms。所有的结构都经历了总的结构故障，然后是一个显着的碎片分布的结果表明，结构的几何形状，爆炸超压和脉冲是负责的破碎模式，初始破碎和碎片分布的关键参数分别。
Blast loading of structures is a complex system dependant on a vast number of parameters from both the structure and blast wave. Even for the simplest of structures, small changes to its size and shape can have a large effect on the result when subjected to blast; additionally, small changes to the pressure or duration of the blast wave can drastically alter its interaction with a specific structure. This paper, as part of a larger in-depth research study, investigates the breakage patterns and debris distribution of masonry panels subjected to blast loads with a positive phase duration typically exceeding 100ms. Three experimental trials were conducted in which ten masonry panels of varying geometries were subjected to blast loading with peak static overpressures of approximately 55kPa and 110kPa and positive phase durations of 200ms and 150ms respectively. All structures underwent total structural failure followed by a significant debris distribution with the results showing structural geometry, blast overpressure and impulse to be the key parameters responsible for the breakage pattern, initial fragmentation and debris distribution respectively.