Vehicle Barrier Analysis & Design

Vehicle Barrier Analysis & Design

Challenge

The General Services Administration needed to install an operable bollard system capable of adequately stopping a moving vehicle in an upper slab of a parking garage where it was not possible to encase the foundation in compacted soil.  Instead, an existing K4 retractable bollard system needed to be adapted to hang on existing concrete walls while still providing the necessary resistance to vehicular impact to prevent unauthorized vehicle penetration.

Solution

ARA worked closely with McMullan and Associates to develop an adapted design for a tested K4 retractable bollard system that used a hanging foundation supported on the existing concrete walls.  ARA performed a detailed finite element analysis of the barrier system and the new hanging foundation.  ARA utilized extensive experience analyzing, testing, and designing vehicle barrier systems to develop a reliable validated model to ensure the design adaptation would meet all performance requirements while working within the available structural and operational requirements of the space.  ARA engineers also provided construction administration support and worked with the client to resolve construction challenges as they arose to ensure the installed system would perform as designed.

Vehicle Barrier Analysis – Impact Comparison Video

Impact

This unique design allowed the adaptation of an existing pre-tested barrier system to challenging existing site conditions without the need to conduct additional testing by relying on validated modeling and experience provided by ARA engineers.

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