Development of a Retrofit, Low-Deflection, Temporary Concrete Barrier System

The objective of this research effort was to develop a stiffening mechanism for use in reducing the deflection of temporary concrete barrier (TCB) installations without requiring anchorage of the barrier segments to the road surface. The joint-stiffening mechanism was developed for use with the Midwest Pooled Fund States’ 12.5-ft (3.8-m) long, F-shape, temporary concrete barrier. The research effort included development and analysis of mechanisms for limiting deflections through engineering analysis and LS-DYNA computer simulation. Following analysis of the candidate designs, an initial prototype design was full-scale crash tested. Following the first full-scale crash test, the low-deflection TCB system was modified to further reduce deflections and full-scale crash tested a second time. The final version of the low-deflection TCB system was capable of reducing dynamic barrier deflections almost 50% over free-standing TCB installations while still safely redirecting errant vehicles. LS-DYNA simulations of a pickup truck striking the low-deflection TCB system at the 85th percentile impact severity were conducted to estimate the deflection of the barrier. The predicted deflection was then used to set placement criteria for non-critical installations.

  • Record URL:
  • Corporate Authors:

    University of Nebraska, Lincoln

    Midwest Roadside Safety Facility
    2200 Vine Street, Whittier Building
    Lincoln, NE  United States  68583-0853

    Nebraska Department of Roads

    Midwest States Regional Pooled Fund Program, 1500 Nebraska Highway 2
    Lincoln, NE  United States  68509-4759

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Bielenberg, Robert W
    • Quinn, Tyson E
    • Faller, Ronald K
    • Sicking, Dean L
    • Reid, John D
  • Publication Date: 2014-3-31

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 380p

Subject/Index Terms

Filing Info

  • Accession Number: 01704702
  • Record Type: Publication
  • Report/Paper Numbers: TRP-03-295-14, RPFP-WISC-4
  • Contract Numbers: TPF-5(193) Suppl. #15
  • Files: NTL, TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Apr 29 2019 12:56PM