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该文研究了超高性能混凝土在埋置炸药爆炸载荷作用下的动态力学性能和损伤规律。通过改变混凝土靶体的配合比和炸药放置深度,得到了不同试验条件下混凝土靶体的破坏数据,采用非线性有限元法对靶体的毁伤效果进行了数值模拟,模拟结果与实际情况吻合较好。研究结果表明混杂纤维增强的超高性能混凝土具备更加优异的抗爆炸性能,炸药在靶体中的放置深度对混凝土的抗爆性能有显著影响。
In this paper, the dynamic mechanical properties and damage rules of ultra-high performance concrete under the explosive load of buried explosives are studied. By changing the mix ratio of concrete target and the depth of explosive placement, the damage data of concrete target under different test conditions were obtained. The damage effect of target was numerically simulated by nonlinear finite element method. The simulation results were in good agreement with the actual situation it is good. The results show that hybrid fiber reinforced super high performance concrete possesses more excellent anti-explosive performance, and the placement depth of the explosive in the target body significantly affects the anti-explosion performance of the concrete.