Design and evaluation of an energy-absorbing, reusable roadside/median barrier.

Details

• Creators:
  Schmidt, Jennifer D. ; Faller, Ronald K. ; Reid, John D. ; Lechtenberg, Karla A. ; Rosenbaugh, Scott K. ; Bielenberg, Robert W. ; Holloway, Jim C. ; Kohtz, Justine E.
• Corporate Creators:
  Midwest Roadside Safety Facility
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Median barriers
  • Energy absorbing materials
  • Dynamic tests
  • Impact tests
  • Precast concrete
  • Rubber
  • Steel
  • Highway safety
  • Evaluation
  • Design
  More +
• Publication/ Report Number:
  TRP-03-317-15
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Nebraska. Dept. of Roads
• Abstract:
  Further design and evaluation was conducted on an energy-absorbing, restorable and reusable roadside/median barrier, ; designated the RESTORE barrier. A series of dynamic component tests were conducted on 11⅝-in. (295-mm) tall x 10-in. ; (254-mm) wide x 15¾-in. (400-mm) long rubber posts to characterize their energy-absorption properties. A hybrid precast ; concrete beam and steel tube rail was optimized to meet the design criteria for the new system. Several concrete beam ; splices were evaluated using LS-DYNA to add continuity to the concrete beam segments. ; A 240-ft (73-m) barrier model was created, and the barrier performance was evaluated with TL-4 impacts with the 1100C, ; 2270P, and 10000S vehicle models. The 1100C and 2270P vehicle models were successfully captured and redirected, while ; the 10000S single-unit truck demonstrated likelihood to be contained by the barrier and began to redirect. The occupant risk ; values for the passenger vehicle impacts were up to 28 percent lower than what occurred in a comparable simulated impact ; into a rigid concrete barrier. The full-scale system was installed, and the stability of the system was evaluated. The final ; design is recommended for full-scale crash testing according to the MASH TL-4 criteria.
  More +
• Format:
  PDF
• Funding:
  NDOR DPU-STWD (94)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29532/dot_29532_DS1.pdf
• File Type:
  [PDF - 22.39 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:f826f899920e60881f78c26d4af6aa3af75fdcb9e307c97adad7be51b81e95530b39e9e1a4aaac001353574a45992f85561ad36ffc7f8e5b4820c42dd9eb52cc