The high lateral dynamic deflection of some current Texas Department of Transportation (TxDOT) portable concrete barriers renders them inappropriate for deployment in areas with restricted work space. Under this project, a new precast concrete traffic barrier system with limited deflection was developed through a program of simulation and full-scale crash testing. Based on the results of the testing and evaluation reported herein, the new cross-bolt, F-shape, precast concrete traffic barrier is considered suitable for implementation on high-speed roadways. The low barrier deflection (19 inches (483 mm)) and ease of placement and repair make the cross-bolt F-shape barrier well suited for use as a work zone barrier. The weight of the 30-ft (9.1 m) F-shape barrier segments was determined to be approximately 13,680 lb (6205 kg). Because this is less than the weight of the current New Jersey-shaped barriers used by TxDOT, implementation of the new barrier will not require any changes to current barrier transportation, handling, and placement procedures.


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    Titel :

    Development of Low-Deflection Precast Concrete Barrier


    Beteiligte:
    R. P. Bligh (Autor:in) / N. M. Sheikh (Autor:in) / W. L. Menges (Autor:in) / R. R. Haug (Autor:in)

    Erscheinungsdatum :

    2005


    Format / Umfang :

    68 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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