Damage Criteria of Reinforced Concrete Beams under Blast Loading

WANG Wei;LIU Rui-chao;WU Biao;LI Lin;HUANG Jia-rong;WANG Xing

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2016, Vol. 37 ›› Issue (8) : 1421-1429. DOI: 10.3969/j.issn.1000-1093.2016.08.012
Paper

Damage Criteria of Reinforced Concrete Beams under Blast Loading

  • WANG Wei, LIU Rui-chao, WU Biao, LI Lin, HUANG Jia-rong, WANG Xing
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Abstract

In order to investigate the damage criteria of reinforced concrete (RC) beams under blast loading, the experimental study of two different dimensions of RC beams under different blast distances and charge masses is carried out. Two common RC beams designed for tall buildings and frame structures are taken as the research objects. The damage mode and characteristics of RC beams are got through 11 independent blast experiments. The results show that, when RC beams are subjected to close-in blast loading, the damage level increases with the increase in explosive mass at the same blast distance, the damage mode of RC beams changes from a few fall-off of concrete on the two sides of upper side and a few ruptures on the rear face to the compressed flexural damage of reverse triangle cone-shaped concrete on the upper side and triangle cone-shaped crack and a fall-off of concrete on the rear face, and finally the triangle cone-shaped damage areas on both upper side and rear face are perforated to result in a crushed and punched damage of concrete in the middle area. The damage area increases with the increase in explosive mass. Under close-in blast loading (blast distance= 0.5 m for example), the damage criteria of the RC beams used in the experiment are: the beam suffers from minor damage for scaled burst distance Z>0.4 m/kg1/3; it suffers from moderate damage for scaled burst distance 0.3 m/kg1/31/3; it suffers from high damage for scaled burst distance 0.28 m/kg1/31/3; it suffers from serious damage for scaled burst distance Z<0.28 m/kg1/3. It is also found that the damage of RC beam not only depends on the scaled burst distance under close-in blast loading, but also depends on the burst distance. At the same scaled burst distance, the more the burst distance is, the damage of RC beam is more serious. The results can be useful for engineering application and damage assessments.

Key words

ordnance science and technology / explosion load / reinforced concrete beam / damage mode / damage criterion

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WANG Wei, LIU Rui-chao, WU Biao, LI Lin, HUANG Jia-rong, WANG Xing. Damage Criteria of Reinforced Concrete Beams under Blast Loading. Acta Armamentarii. 2016, 37(8): 1421-1429 https://doi.org/10.3969/j.issn.1000-1093.2016.08.012

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