卡车撞击固定式防撞柱的数值模拟及碰撞分析  

Numerical simulation and collision analysis of truck impacting fixed anti-ram bollards

作　　者：孙建运[1] 刘天一[2] 陈素文[2,3] 胡波[4] 李国强[2,3] 

机构地区：[1]中国建筑股份有限公司,北京101300 [2]同济大学土木工程学院,上海200092 [3]同济大学土木工程防灾国家实验室,上海200092 [4]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《四川建筑科学研究》2015年第3期80-84,共5页Sichuan Building Science

摘　　要：近些年的恐怖袭击中,汽车炸弹已成为攻击建筑物和基础设施的主要方式。固定式防撞柱是一种车辆障碍设施,具有阻挡车辆的作用,以控制爆炸距离。本文采用LS-DYNA软件,建立了数值模型,模拟卡车与固定式防撞柱的碰撞过程,并通过比较数值模拟得到的车辆及防撞柱动力响应时程与实车撞击试验的实测记录,验证了数值模拟的有效性。本文还通过分析碰撞过程中发动机的运动轨迹,提出了用于阻挡卡车的防撞柱高度不应小于900 mm的设计要求。In recent years, car-bomb attack has become the main way of terrorist attacks. Fixed anti-ram bollard is one of barrier facilities for preventing the entry of unauthorized vehicles. Employing LS-DYNA software, this paper presented a numerical simulation of truck collision with fixed bollards. The effectiveness of numerical simulation was verified through comparison of dynamic responses of vehicle and bollard form numerical simulation and crash test. Based on investigation of the engine＇s trajectory during collision a suggestion was proposed that the height of bollard for truck should not be smaller than 900 mm.

关 键 词：防撞柱 卡车 撞击 碰撞分析 数值模拟 

分 类 号：TU352.13[建筑科学—结构工程]