Experimental study of anti-ram bollards based on truck collision

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (11) : 1-6.

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Experimental study of anti-ram bollards based on truck collision

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

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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.

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car bomb / concrete filled tubes / anti-ram bollards / track / truck collision test / comparative test / impact force

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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