Study of the effect of different strikes on the damage of bridges
Bridges are an important medium of transportation and are very easy to be destroyed by attacks during wartime.In order to study the effects of different striking modes of munitions on the destruction effect of bridges,in-depth numerical simulation studies were carried out by using LS-DYNA software.The simulation results are compared with the corresponding test results to verify the reliability of the calculation model,and the numerical simulation of different striking modes is carried out to calculate the residual bearing capacity of bridges in different working conditions,so as to reveal the destructive effects of different striking modes on bridges.Conclusions are as follows:the center of the panel contact explosion when the bridge damage is the most obvious,followed by the destruction effect of the explosion below the panel,the worst destruction effect of the bridge directly above the air blast;the same intrusive demolition of the fighting part of the explosion center location in the middle of the bridge deck when the bridge residual bearing capacity than above the air blast strike weakened by 8.2%.The conclusion can provide a reference for the bridge anti-explosive design and munitions strike and bridge damage assessment.
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