土中轻质抗爆结构综合反射系数研究  

Study on the overall reflection coefficient of lightweight blast-resistant structures in soil

作　　者：徐航 张伟锋 秦有权 XU Hang;ZHANG Weifeng;QIN Youquan(Defense Engineering Institute,AMS,PLA)

机构地区：[1]军事科学院国防工程研究院

出　　处：《防护工程》2024年第6期42-47,共6页Protective Engineering

摘　　要：建立了化爆荷载作用下土中抗爆结构顶板构件运动微分方程,分低阻尼、临界阻尼和过阻尼3种情况对方程进行求解,得到了不同情况下综合反射系数计算公式。分析了单位面积质量对综合反射系数的影响,给出了土中轻质高强抗爆结构和普通混凝土抗爆结构综合反射系数的计算公式,讨论了二者综合反射系数的区别,可为土中轻质高强抗爆结构综合反射计算提供依据。A differential equation of motion for the top slab components of blast-resistant structures in soil under explosive loading is established.The equation is solved for three cases:underdamped,critically damped and overdamped,resulting in calculation formulas for the overall reflection coefficient under different conditions.The influence of unit area mass on the overall reflection coefficient is analyzed,and calculation formulas for the overall reflection coefficients of lightweight high-strength blast-resistant structures and ordinary concrete blast-resistant structures are provided.The differences between the overall reflection coefficients of the two types of structures are discussed,which can serve as a basis for calculating the overall reflection coefficients of lightweight high-strength blast-resistant structures in soil.

关 键 词：爆炸荷载 土中抗爆结构 运动微分方程 综合反射系数 

分 类 号：TU352.13[建筑科学—结构工程]