【摘要】 针对大范围双向抗爆问题，提出了一种新型的半月形双钢板-混凝土组合结构门板，并通过动态超压传感器、三维DIC测试系统及数值仿真分析，研究了组合结构门板在内爆条件下的位移、应变及应力等变化规律，提出了门板变形简化计算公式。结果表明冲击波超压峰值实测与数值仿真基本吻合，变化规律基本一致。门板钢板应变普遍低于1 000με,混凝土应力也处在弹性范围内，整体挠度较小。组合结构充分发挥了钢和超高强混凝土的受力性能优势，具有良好的承载力和刚度。更多还原

【Abstract】 In response to the challenges of broad-spectrum bidirectional blast resistance, a novel semi-moon dual-steel-plate-concrete composite structure is proposed. Through dynamic overpressure sensors, a 3D digital image correlation(DIC) testing system, and numerical simulation analysis, the displacement, strain, and stress variations of the composite structure under internal explosion conditions are studied. A simplified calculation formula for door panel deformation is proposed. The results indicate that the measured peak overpressure of the shock wave aligns well with numerical simulations, and their variation trends are essentially consistent. The strain in the steel plate of the door panel is generally below 1 000 με, and the stress in the concrete remains within the elastic range, resulting in overall small deflection. The composite structure fully leverages the mechanical advantages of steel and ultra-high-strength concrete, demonstrating excellent load-bearing capacity and stiffness.更多还原