混凝土防爆板内部爆炸防护性能验证

IF 3.6 3区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Sangwoo Park, Kukjoo Kim, Dongku Kim, Young-Jun Park, Byul Shim
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引用次数: 0

摘要

最近,人们积极开展了有关防爆板的研究,这些防爆板被安装在建筑物上,以保护设施免受爆炸造成的局部损坏。然而,由于安装成本高、施工难度大,防爆板并不实用,而且没有对结构内部爆炸的防护性能进行评估。本研究设计了一种由混凝土材料组成的防爆板,以确保经济可行性和可施工性。然后,通过数值模拟和现场实验分析了混凝土防爆板的内部爆炸防护性能。首先,对混凝土防爆板进行了两种情况的现场实验,分别安装了不含吸能泡沫的防爆板和含吸能泡沫的防爆板。结果表明,混凝土防爆板可将结构物的位移降低 22%,将结构物的加速度降低 86%。然而,由于试验结构在实验过程中发生剪切破坏,现场实验数据的可靠性不足。因此,我们通过开发数值模型进行了补充分析。根据插入面板和结构之间的吸能泡沫的不同密度,进行了一系列数值模拟。因此,根据需要减少的结构损坏类型(即结构的位移或加速度)的不同,冲击吸收材料的最佳密度也不同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Verification of Protection Performance of Concrete Blast-Proof Panels Against Internal Explosions

Verification of Protection Performance of Concrete Blast-Proof Panels Against Internal Explosions

Recently, studies on blast-proof panels, which were attached to structures to protect facilities from local damage caused by explosions, have been actively performed. However, blast-proof panels are impractical yet due to the high installation cost and difficulty in construction, and protection performance for explosions inside a structure is not evaluated. In this study, a blast-proof panel consisting of concrete material was devised to ensure economic feasibility and constructability. Then, the protection performance of the concrete blast-proof panel for internal explosions was analyzed by numerical simulations and field experiments. First, field experiments on concrete explosion-proof panels were conducted for two cases, where panels without and with energy-absorbing foam were installed. As a result, the concrete blast-proof panel reduced the displacement of structures by up to 22% and the acceleration of structures by up to 86%. However, the reliability of the field experiment data was insufficient due to the shear failure of the test structure during experiments. Therefore, additional analysis was conducted by developing a numerical model. A series of numerical simulations was conducted according to the various densities of the energy-absorbing foam that was inserted between the panel and structure. Consequently, the optimum density of the impact-absorbing material differed depending on the type of structure damage to reduce (i.e., the displacement or acceleration of the structure).

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来源期刊
International Journal of Concrete Structures and Materials
International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL
CiteScore
6.30
自引率
5.90%
发文量
61
审稿时长
13 weeks
期刊介绍: The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.
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