防撞柱实车碰撞性能的研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (11) : 1-6.

论文

防撞柱实车碰撞性能的研究

肖岩1,2，陈林1，肖果3，陈柏生1，刘春霖4

作者信息 +

Experimental study of anti-ram bollards based on truck collision

XIAO Yan1, 2，CHEN Lin1，XIAO Guo3，CHEN Bo-sheng1，LIU Chun-lin4

Author information +

文章历史 +

摘要

作为防止汽车炸弹恐怖袭击的有效手段，防撞柱被越来越多地用于重要建筑设施的防护。针对目前防撞柱的研究一般多只停留在软件分析，本文详细介绍了作者们研发的结构防撞实验设施以及利用该设施完成的一种钢管混凝土防撞柱系统的实车碰撞试验。该试验中的撞击卡车加配重总重6.8t，发生撞击时速度约12m/s，卡车货厢前沿未穿过碰撞前的防撞柱内侧边缘，而被完全阻止，符合美国防恐SD-STD-02.01标准规定的防撞柱K4等级要求。对防撞柱进行了静力推覆对比试验，得到了防撞柱的荷载-挠度曲线，并据此对碰撞试验中的能量转换进行了分析。通过对碰撞试验进行简化分析，得到了卡车与柱状物撞击时的卡车前部变形刚度系数以及最大撞击力计算公式，并提出了防撞柱的简化设计方法。

Abstract

Bollards are being more and more utilized in guarding important buildings against potential attack by terrorists using car bomb. Most existing research on bollards typically only stays in the analysis phase and experimental studies are quite rare. In this paper, the authors developed a new facility for testing car collisions with structures or transportation facilities. An actual truck collision test was conducted to study the effectiveness of a newly designed concrete filled tubular anti-ram bollard system. The total weight of the collision truck was 6.8 tons. At the time of collision, the speed of the truck was about 12m/s. The collision test results show that the front edge of the cargo bed did not reach the pre-impact inside edge of the bollard, thus the collision truck was completely stopped, in full compliance with the K4 level according to the U.S. standard SD-STD-02.01. The load versus deflection curve was obtained through the comparative static test of the bollard. The energy transformation in the collision test was analyzed. According to the simplified analysis of the collision test, the formulas of the deformation stiffness of the front of the truck and the maximum impact force are obtained and a simplified design procedure is proposed.

导出引用

肖岩;陈林;肖果;陈柏生;刘春霖. 防撞柱实车碰撞性能的研究[J]. 振动与冲击, 2013, 32(11): 1-6

XIAO Yan;;CHEN Lin;XIAO Guo;CHEN Bo-sheng;LIU Chun-lin. Experimental study of anti-ram bollards based on truck collision[J]. Journal of Vibration and Shock, 2013, 32(11): 1-6