接触爆炸载荷下波纹钢加固钢筋混凝土板毁伤特征分析

为探究波纹钢加固钢筋混凝土板的毁伤特征，设计了波纹钢加固钢筋混凝土靶板，开展了波纹钢加固钢筋混凝土板的接触爆炸实验，获得了构件典型的毁伤特性，论证了波纹钢加固钢筋混凝土板的抗爆性能.采用有限元软件LS-DYNA对比了等质量的波纹状混凝土板、等质量平板混凝土板、等质量平钢板混凝土板的破坏模式，研究了波纹钢加固钢筋混凝土板的抗接触爆炸性能，获得了波纹钢加固钢筋混凝土板在不同接触爆炸载荷下钢板的跨中位移变化规律，给出了在接触爆炸载荷作用下波纹钢加固钢筋混凝土板的薄弱方向. 基于量纲分析，建立了该波纹钢截面形状下波纹钢加固钢筋混凝土板的跨中位移关于炸药质量的工程经验公式. 

Damage Characteristics of Corrugated Steel Concrete Slab Under Contact Explosion Load

In order to explore the damage characteristics of reinforced concrete slabs strengthened with corrugated steel, reinforced concrete target slabs strengthened with corrugated steel were designed, and contact explosion experiments on corrugated steel reinforced concrete slabs were carried out. The typical damage characteristics of components were obtained, and the anti-explosion performance of reinforced concrete slabs strengthened with corrugated steel was demonstrated. Combined with the finite element software LS-DYNA, the failure modes of corrugated concrete slab, concrete slab and flat steel plate concrete slab with equal quality were compared, and the excellent anti-explosion performance of corrugated steel reinforced concrete slab was illustrated; the mid-span displacement of corrugated steel reinforced concrete slab under different contact explosion loads was obtained, and the weak direction of corrugated steel reinforced concrete slab under contact explosion load was given. Based on dimensional analysis, the engineering empirical formula of dimensionless mid-span displacement with respect to explosive quality is established.