中文摘要：

为研究可燃气体爆炸对石油化工设施及建筑结构的冲击荷载特性,利用可燃气体爆轰实验装置,通过乙炔/空气混合气体沿管道爆轰产生的冲击波对实验平台刚壁的冲击实验,分别测得壁面超压时程曲线以及刚壁和爆轰管道的振动加速度时程曲线.通过对超压和振动加速度时程曲线的分析,研究可燃气体爆炸对结构的冲击荷载及其引发结构振动响应的规律.实验发现,混合气体中的乙炔浓度是影响爆炸冲击荷载及结构振动响应的主要因素,冲击波在内壁正反射区域产生的超压荷载峰值高达1.4 MPa,并且正反射区域的超压峰值始终大于其他斜反射区域.同时,爆炸冲击波引发实验平台和爆轰管道产生强烈振动,平台刚壁振动加速度峰值高达1 684 m/s2.

英文摘要：

In order to explore the shock load formed at petrochemical engineering facilities and buildings by the explosion of an inflammable mixture,this text studies the experiment of a blast wave induced by the reaction of acetylene/air mixtures propagating along a pipe through inflammable-mixture detonation experimental facilities,impacting the anti-detonation container rigid wall.Histories of overpressure and vibration acceleration on different survey points were measured and analyzed to study the laws of the blastshock load and structure vibration responses of inflammable mixture explosions.The experimental results show that the main influential factor is the volumetric concentration of acetylene.The overpressure peak value in the normal reflection region of an antidetonation container reached as high as 1.4 MPa,and it was always greater than the other oblique reflection regions.Besides this,detonation facilities and anti-detonation containers also experienced intensive vibration under an explosive shock wave.The maximum vibration acceleration of a container reached 1684 m/s2.