• performance of retrofit highway barriers with mechanical anchor

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/11/15
    • تاریخ انتشار در تی پی بین: 1390/11/15
    • تعداد بازدید: 750
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the texas department of transportation uses vehicular barriers at the edges of highway bridge decks. a recent txdot research study, conducted at the university of texas at austin, was intended to develop designs for retrofit barriers, connected to bridge decks using post-installed mechanical anchors, which could be used to replace highway barriers damaged by vehicular collisions. in the research study described here, two retrofit barrier designs were developed: one an intermittent barrier with through ancho, and the other a continuous barrier with undercut anchors. the undercut -anchor design involved groups of inclined anchors, whose capacity was governed by concrete breakout, and for which current design provisions were not directly applicable. the barriere were tested under quasi-static and impact loading. the current us anchor design provisions of aci 318_05 appendix d can safely be used to predict the capacity of such barriers.

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