钢纤维钢筋混凝土板爆炸局部破坏效应

Local damage effects of steel fiber reinforced concrete plates subjected to contact explosion

在前人的实验基础上,针对中高强钢纤维钢筋混凝土板接触爆炸破坏效应进行了94炮野外化爆实验,详细介绍了实验参数设计,系统分析了不同装药量及结构参数条件下钢纤维钢筋混凝土板接触爆炸破坏特征,即爆炸成坑、临界震塌、爆炸震塌、临界贯穿和爆炸贯穿。得出了钢纤维钢筋混凝土板接触爆炸5种典型破坏形态及其相应的破坏参数指标值,对爆炸成坑和结构震塌的主要影响因素得出了初步结论,为爆炸局部破坏分级及结构抗局部破坏设计提供了实验依据。

On the base of the known experimental researches, 94 field experiments of chemical explosion were carried out to investigate contact explosion damage effects of middle-high strength steel fiber reinforced concrete plates. The design of test parameters was introduced, and damage characteristics of steel fiber reinforced concrete plates were analyzed under the contact explosion conditions with dif- ferent charges and structure parameters. These damage characteristics include explosion cratering, critical spalling, explosion spa/ling, critical perforating and explosion perforating. The damage parameters corresponding to five kinds of typical damage forms were obtained. Preliminary analysis of the main influence factors on explosion cratering and structure spalling can provide a reference for the classification of explosion local damage and the design of local-damage-resisting structures.