Abstract
Abstract The explosion test and numerical simulation of a full-size specimen were carried out to investigate the dynamic response and failure characteristics of the reinforced concrete shear walls under near-field explosion. The TNT was located at 0.55 m above the top plate center of the reinforced concrete shear wall with an equivalent of 6.4 kg and a proportional distance of 0.296 m/kg1/3. The reinforced concrete shear wall’s reflected overpressure, displacement, and acceleration were measured and analyzed. The laser 3D scanner scanned the backside failure characteristics. An LS-DYNA numerical model was established and validated by the experimental results. The effects of TNT equivalent, reinforcement ratio, concrete strength, and thicknesses on the explosion resistance of the reinforced concrete shear walls were analyzed. The study results show that increasing the reinforcement rate, using high-strength concrete, and increasing the thickness can all improve the blast resistance of reinforced concrete walls, with increasing the thickness being the most effective measure. The peak displacement values of the back of the reinforced concrete shear wall at the center 1/4 height increase with the increase in charge. Using the least square method, the corresponding fitting curve expressions were obtained. The results can provide references for blast-resistant concrete shear walls design.
Published Version
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