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在建筑物外部一定距离上设置防爆墙,能对汽车炸弹爆炸冲击波和碎片起到有效的防护,消除爆炸冲击波对建筑物及内部人员的破坏杀伤作用。应用Ls-Dyna程序,模拟分析了爆炸冲击波在设置悬臂式防爆墙的三维流场中的传播情况,并与不设置防爆墙的三维流场计算结果进行对比,得到了防爆墙后爆炸冲击波的超压衰减率。针对一重要建筑物,作者应用所得结果分析了拟构筑的防爆墙的消波作用和建筑物的安全。文中所用方法和成果可供防爆墙设计时应用参考。
Explosion-proof walls located at a distance from the outside of the building can effectively protect the car bomb blast wave and debris and eliminate the damaging effect of the blast shock wave on buildings and internal personnel. The application of Ls-Dyna program simulates and analyzes the propagation of blast shock wave in the three-dimensional flow field of cantilever explosion-proof wall and compares it with the calculation results of three-dimensional flow field without explosion proof wall. Pressure decay rate. For an important building, the author applied the result to analyze the wave elimination effect and building safety of the explosion-proof wall to be constructed. The methods and results used in this article can be used as a reference for explosion-proof wall design.