钢纤维混凝土箱梁在爆炸荷载作用下的动态响应

采用模型试验和数值模拟相结合的方法,研究了混凝土和钢纤维混凝土箱梁在爆炸荷载作用下的动态响应。结果表明,在爆炸荷载作用下,相较于炸药药量而言,结构的应变峰值对爆炸高度更为敏感,混凝土箱梁中添加适量钢纤维后,结构的应变明显减小,说明钢纤维对提高结构的抗爆性有很大作用。

Dynamic Response of the Steel Fiber Reinforced Concrete Box Girders under Blast Loading

The dynamic response of concrete and steel fiber reinforced concrete box girder under blast loading was studied by the combination of model test and numerical simulation. The results show that under the explosion load, the strain peaks structure is more sensitive to the explosion height than the explosive charge. After adding proper steel fiber into the concrete box girder, the strain of the structure is obviously reduced, which indicates that the steel fiber has a great effect on improving the antiknock quality of the concrete structure.