Analysis of the dynamic response of reinforced concrete shear walls under increasing impact
The dynamic response of reinforced concrete shear walls under impact loads is a complex nonlinear process.LS-DYNA was used to conduct three consecutive numerical simulation tests on the reinforced concrete shear wall under impact loads,verifying the reliability of the CSCM constitutive model,analyzing the failure modes of the three impacts,and extracting its dis-placement time history curve.The research results indicate that under the action of increasing impact load,the damage range of con-crete gradually increases,and radial cracks also gradually increase,making the impact response more complex;As the impact energy increases,the efficiency of shear walls in absorbing energy gradually decreases.The peak displacement of the wall center increases with the increase of the impact head velocity,the center displacement increased sharply from 12.83 mm to 49.08 mm.The period of peak displacement increases with the increase of the degree of wall damage.
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维普
