高强RC板的抗接触爆试验分析

在接触爆炸荷载作用下，钢筋混凝土板是防护结构中受爆炸荷栽作用的主要受力构件，通过对5个不同配筋率的HHT600高强RC双向板和5个普通RC双向板在接触爆炸荷栽作用下的对比试验，考察了破坏形态，包括爆炸成坑、爆炸震塌和爆炸贯穿等现象，系统分析了这两种板的接触爆炸破坏特征和局部破坏效应。研究结果表明：提高板中的钢筋强度等级和钢筋配筋率，能改善钢筋混凝土板的抗爆性能。对爆炸成坑和结构震塌的主要影响因素得出了初步结论，为结构抗局部破坏设计和防护工程中遮弹层的研制提供了实验依据。

Experimental Study on the Contact Explosion Resistance Performance of High Strength RC Slabs

Influenced by the contact explosion shock, the reinforced concrete slabs are the main structural components of a protective structure under the blast loads. The explosion contact resistance performance of 5 different steel ratio high strength RC two-way slabs and 5 common RC two-way slabs were experimentally studied to explore the mode of failure mechanism. Explosion cratering, explosion spalling and explosion perforating. The contact explosion damage feature and local damage effects of the two kinds of slabs were also systematically analyzed. The experimental results indicate that raising the strength grade of steel bar and steel ratio can enhance the explosion resistance performance of RC slab. Preliminary analysis of the main influence factors on explosion cratering and structure spatling can provide a reference for the design of local damage resisting structures and development shielding covers for protection engineering.