Damage assessment of steel-concrete composite beam subjected to blast loading

TIAN Zhi-min 1, 2, ZHANG Jun-hao 1, JIANG Shi-yong 1

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (4) : 42-48.

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (4) : 42-48.

Damage assessment of steel-concrete composite beam subjected to blast loading

  • TIAN Zhi-min 1, 2,  ZHANG Jun-hao 1,  JIANG Shi-yong 1
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Abstract

In order to meet the practical needs of damage assessment of the steel-concrete composite beams (i.e. the composite beams in short) subjected to blast loading, tests of carrying load capacity of the composite beams were conducted compared with reinforced concrete beams. The carrying load capacities and failure features of the two kinds of beams were studied, and the experimental resistance curves and bending deformation limits as well as the resistance functions of them were obtained. Based on the equivalent single-degree-of-freedom motion equation of the composite beams, the pressure-impulse (i.e. P-I in short ) isodamage curves for assessing the damage status of them were got by means of the numerical simulation method. The research results show that the carrying load capacity, deformation limits, critical overpressure and critical impulse of the composite beams are higher than those of reinforced concrete beams, indicating that the former beams have better blast resistance.

 

Key words

steel-concrete composite beam / deformation limits / resistance function / P-I curve / critical overpressure / critical impulse

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TIAN Zhi-min 1, 2, ZHANG Jun-hao 1, JIANG Shi-yong 1. Damage assessment of steel-concrete composite beam subjected to blast loading[J]. Journal of Vibration and Shock, 2016, 35(4): 42-48

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