Development of Shallow Footing Anti-Ram Bollard System Through Modeling and Testing

查看全文 作　　者：CRAWFORD John [1]E 机构地区：[1]Karogozian & Case,2550 N.Hollywood Way,Suite 500,Burbank,CA 91505,USA 出　　处：《Transactions of Tianjin University》索引2006年第12卷第B09期,共5页 摘　　要：In past terrorist attacks, vehicle borne improvised explosive devices (VBIED) have been the primary manner of attacking buildings and infrastructures. Preventing unauthorized vehicles from approaching a protected area with anti-ram systems would maintain an established standoff distance against moving and stationary vehicles and consequently reduce blast and debris threats. This strategy has been considered the first line of defence against terrorists. Several types of anti-ram devices have been developed in accordance with U. S. Department of State K-rating criteria, for example, wedge barriers, rising beams, sliding/swing gates, and drop arms. However, these devices typically need a deep foundation for installation and can't be implemented into many locations where a depth of excavation is limited in order to protect utility lines of buildings and infrastructures. This paper presents a recent development of a series of shallow footing anti-ram bollard systems (SFABS) that can satisfy K-12 rating with only five-inch thick footing. A high-fidelity physics based finite element technique with a vehicle crash model is used for predicting anti-ram capacity and determining design parameters of the SFABS. Full-scale vehicle crash tests of the developed SFABS systems have been carried out to validate the design and analysis. 关 键 词：抗撞击力 带缆桩 薄桩靴 碰撞试验 有限元分析 建筑物 交通工具