高速列车车厢内部爆炸冲击波传播规律及载荷特性研究  

Studies on the propagation law and loading characteristics of blast shock wave inside a high-speed train compartment

作　　者：姚术健 马一先 叶逸之 冯兴民 孙成名 史湘石 YAO Shujian;MA Yixian;YE Yizhi;FENG Xingmin;SUN Chengming;SHI Xiangshi(Key Laboratory of Traffic Safety on Track,Ministry of Education,School Traffic&Transportation Engineering,Central South University,Changsha 410075,China;Key Laboratory of Traffic Safety on Track,Ministry of Education,Central South University,Changsha 410075,China;Joint International Research Laboratory of Key Technology for Rail Traffic Safety,School Traffic&Transportation Engineering,Central South University,Changsha 410075,China;FuzhouJiangyin Industrial Zone Development and Construction Co.,Ltd.,Fuzhou 350309,China;Department of Special Technology,Army Special Operations College,Guangxi 541000,China)

机构地区：[1]中南大学交通运输工程学院,长沙410075 [2]中南大学轨道交通安全教育部重点实验室,长沙410075 [3]中南大学轨道交通安全关键技术国际合作联合实验室,长沙410075 [4]福州市江阴工业区开发建设有限公司,福州350309 [5]陆军特种作战学院特种技术系,广西桂林541000

出　　处：《兵器装备工程学报》2022年第11期57-63,共7页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(11902369)。

摘　　要：随着我国高速铁路的发展,高速列车遭受意外爆炸、恐怖袭击的风险不断增大。针对高速列车车厢内部爆炸问题,对车厢内部的爆炸冲击波传播规律及载荷特性进行研究。利用有限元仿真软件ANSYS/LS-DYNA建立了有窗和无窗两种列车车厢,分析了爆炸冲击波在车厢内的传播规律,得到了车厢内典型位置爆炸载荷及车厢底板载荷空间分布特性。结果表明:爆炸冲击波在不同类型车厢均存在多次反射,部分远距离取样点处超压峰值可能大于近距离取样点处;车厢结构形式对反射作用影响较大,无窗车厢车头部车厢底板处压力峰值和冲量分别是有窗车厢的2.16倍和2.15倍;由于反射与汇聚作用,车厢的角落处超压及冲量与周围区域相比显著提高,23 kg当量下超压可达到9.07 MPa。With the development of high-speed railways,the risk of accidental explosions and terrorist attacks on high-speed trains continues to increase.This paper aiming at the problem of explosion inside the high-speed train,the propagation law and the characteristics of the explosion shock wave inside the compartment were studied.Firstly,two types of train carriages with and without windows were established through the finite element simulation software ANSYS/LS-DYNA.Then,the propagation law of the explosion shock wave in the carriage and the blast load characteristics of the carriage were analyzed.The results show that blast waves have multiple reflections in different types of carriages,and the overpressure peaks at some remote sampling points may be greater than those at close sampling points;the structure of the carriage has a greater influence on the reflection.The pressure peak and impulse at the bottom of the head of the windowless compartment are 2.16 times and 2.15 times that of the window compartment respectively.Due to the effect of reflection and convergence,the overpressure and impulse at the corner of the compartment are significantly increased compared with the surrounding area,and the overpressure can reach 9.07 MPa at 23 kg equivalent TNT.

关 键 词：高速列车 内部爆炸 爆炸荷载 动态响应 数值模拟 

分 类 号：X951[环境科学与工程—安全科学]