Cable-to-Post Attachments for Use in Non-Proprietary High-Tension Cable Median Barrier – Phase II

The objective of this study was to reevaluate and improve the existing cable-to-post attachment hardware that is utilized in the non-proprietary cable barrier being developed at the Midwest Roadside Safety Facility (MwRSF). The study focused on redesigning the bolted, tabbed bracket (V10) to eliminate the bolt, reduce the number of components per bracket, eliminate the need for tools during installation, and reduce the number of small parts. Three attachment concepts were selected for evaluation through dynamic testing: (1) the key plate attachment; (2) the wire lock pin attachment; and (3) the pinned back attachment. Each attachment prototype was subjected to two vertical and two lateral dynamic component tests to evaluate the release loads and fracture mechanisms of the brackets. Test results were compared to previous tests on the bolted tabbed bracket (V10). None of the three bracket attachment designs were found to satisfy all of the design criteria for an alternative bracket. The lack of fixity in the connection between the brackets and the post led to a variable position of the tabs within the keyway which frequently caused unsatisfactory release loads. Therefore, none of the three alternative attachment brackets were recommended for use within the prototype non-proprietary cable barrier.

• Record URL:
  • https://digitalcommons.unl.edu/ndor/195/
• 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  68502

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Rosenbaugh, Scott K
  • Bielenberg, Robert W
  • Lingenfelter, Jessica L
  • Faller, Ronald K
  • Reid, John D
  • Lechtenberg, Karla A
• Publication Date: 2016-3-24

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 124p

Subject/Index Terms

• TRT Terms: Attachment hardware; Brackets; Cables; Crash tests; Median barriers; Posts
• Subject Areas: Design; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01893340
• Record Type: Publication
• Report/Paper Numbers: TRP-03-323-16
• Contract Numbers: TPF-5(193) Supplement 44; TFP-5(193) Supplement 64
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Sep 16 2023 4:34PM