초록

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Abstract ▼ AI-Helper

In this study, the methods to apply the existing SB5-B rigid median barrier to rigid barriers for bridge rails and roadside safety were suggested. Since rigid barriers for bridge rails and roadside safety do not need glare screen on top, the effective height of rigid barriers required to provide sui...

In this study, the methods to apply the existing SB5-B rigid median barrier to rigid barriers for bridge rails and roadside safety were suggested. Since rigid barriers for bridge rails and roadside safety do not need glare screen on top, the effective height of rigid barriers required to provide suitable vehicle protection were investigated through Hirsch's method and computer simulation using LS-DYNA program. The strength performance of rigid barriers was examined by yield line analysis. For roadside rigid barrier, two types of foundations such as spread footing and pile foundation were designed, and the stability was investigated by considering the equilibrium of rigid barriers subjected to design loads. It has been shown through computer simulation applying SB5-B impact condition that the developed rigid barriers can satisfy the safety performance evaluation criteria for structural adequacy, occupant risk, and post-impact vehicular response. And it has also been shown that the barriers are more economical and efficient in safety performance than the existing barriers.

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