触地爆炸下钢筋混凝土柱的空气冲击波与地震波联合毁伤机制
Combined damage mechanism of air shock wave and ground vibration wave in reinforced concrete column under ground explosion
孔令魁 1陈明 1卢文波 1王高辉 1舒奕展1
作者信息
- 1. 武汉大学水资源工程与调度全国重点实验室,湖北武汉 430072;武汉大学水工岩石力学教育部重点实验室,湖北武汉 430072
- 折叠
摘要
空气冲击波与地震波联合作用下的建筑物抗爆安全问题是工程爆破和防护工程领域的重要研究课题.为研究空气冲击波和地震波的联合毁伤作用,利用理论分析和数值模拟方法,针对单根混凝土框架结构柱进行了探究,讨论了触地爆炸后柱体的毁伤及荷载情况,进一步对地震波的作用和影响柱体毁伤的因素进行了分析.结果表明:触地爆炸发生后,柱体的毁伤形式以弯拉和剪切破坏为主;柱体的毁伤由空气冲击波主导并受地震波影响;地震波对柱的作用受到覆土层类型与饱水程度的影响.
Abstract
The blast-resistance safety of buildings under the combined action of air shock waves and ground vibration wave is an important research topic in the field of engineering blasting and protection engineering.Theoretical analysis and numerical simulation methods are used to explore a single concrete frame structure column in order to study the combined damage effect of air shock wave and ground vibration wave,and the damage and load of the column after ground explosion are discussed.Besides,the effect of ground vibration wave and the factors affecting the damage of the column are studied.The results show that the damage forms of the column are mainly bending,tensile and shear failure.The damage of the column is dominated by air shock waves and affected by ground vibration wave.The effect of ground vibration wave on the column is mainly affected by the type of overlying soil layer and the degree of water saturation.
关键词
触地爆炸/空气冲击波/地震波/钢筋混凝土柱/毁伤Key words
ground explosion/air shock wave/ground vibration waves/reinforced concrete columns/damage引用本文复制引用
出版年
2024
NETL
NSTL
万方数据