Long-span guardrail systems have been recognized as an effective means of shielding low-fill culverts. These designs are popular due to their ability to safely shield the culvert while creating little additional construction effort and limiting the damage and repair of the culvert when compared to other systems that attach posts to the top of the culvert. However, previous long-span designs were limited by the need to use long sections of nested guardrail to prevent rail rupture and the need for large lateral offsets between the barrier and the culvert. The MGS long-span guardrail described herein eliminates those two shortcomings by applying the benefits of the Midwest Guardrail System (MGS) to a long-span design. The MGS long-span increased vehicle capture and stability through increased rail height, limited the potential for pocketing and wheel snag through the use of CRT posts adjacent to the unsupported span, and greatly increased the tensile capacity of the rail through the movement of splices away from the posts and the use of shallower post embedment. These features allowed the system to be developed without the use of nested guardrail and with a minimal barrier offset that places the back of the guardrail posts even with the front face of the culvert.


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    Titel :

    Midwest Guardrail System for Long-Span Culvert Applications


    Beteiligte:
    R. W. Bielenberg (Autor:in) / R. K. Faller (Autor:in) / J. R. Rohde (Autor:in) / J. D. Reid (Autor:in) / D. L. Sicking (Autor:in)

    Erscheinungsdatum :

    2007


    Format / Umfang :

    172 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Midwest Guardrail System for Long-Span Culvert Applications

    Bielenberg, Robert W. / Faller, Ronald K. / Sicking, Dean L. et al. | Transportation Research Record | 2007



    Long-Span Guardrail System for Culvert Applications

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    Long-Span Guardrail System for Culvert Applications

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    Crash Testing and Evaluation of Culvert-Mounted Midwest Guardrail System

    Pajouh, Mojdeh Asadollahi / Bielenberg, Robert W. / Schmidt-Rasmussen, Jennifer D. et al. | Transportation Research Record | 2020