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Interaction and Multiscale Mechanics
  Volume 3, Number 4, December 2010, pages 405-414
open access

Performance evaluation of steel and composite bridge safety barriers by vehicle crash simulation
Huu-Tai Thai

    The performance of full-scale steel and composite bridge safety barriers under vehicle crash is evaluated by using the nonlinear explicit finite element code LS-DYNA. Two types of vehicles used in this study are passenger car and truck, and the performance criteria considered include structural strength and deformation, occupant protection, and post-crash vehicle behavior. It can be concluded that the composite safety barrier satisfies all performance criteria of vehicle crash. Although the steel safety barrier satisfies the performance criteria of occupant protection and post-crash vehicle behavior, it fails to satisfy the performance criterion of deformation. In all performance evaluations, the composite safety barrier exhibits a superior performance in comparing with the steel safety barrier.
Key Words
    safety barrier; vehicle crash simulation; finite element modeling; performance evaluation.
Huu-Tai Thai: Dept. of Civil and Environmental Engineering, Sejong University, 98 Kunja Dong, Kwangjin Ku, Seoul 143-747, Republic of Korea

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