MASH TL-4 crash testing and evaluation of the RESTORE barrier.

Details

• Creators:
  Schmidt, Jennifer D. ; Schmidt, Tyler L. ; Rosenbaugh, Scott K. ; Faller, Ronald K. ; Bielenberg, Robert W. ; Reid, John D. ; Holloway, Jim C. ; Lechtenberg, Karla A.
• Corporate Creators:
  Midwest Roadside Safety Facility
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Impact tests
  • Median barriers
  • Spalling
  • Evaluation
  • Highway safety
• Publication/ Report Number:
  TRP-03-318-15
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska
• Corporate Publisher:
  Nebraska. Dept. of Roads
• Abstract:
  Three full-scale vehicle crash tests were conducted according to the MASH Test Level 4 (TL-4) safety performance criteria on a ; restorable and reusable energy-absorbing roadside/median barrier, designated the RESTORE barrier. The system utilized for test nos. ; SFH-1 through SFH-3 was 240 ft (73.2 m) long with a nominal height of 38⅝ in. (981 mm). The barrier consisted of an upper steel tube ; rail attached to the top of 20-ft (6.1-m) long x 22¼-in. (565-mm) wide precast concrete beams connected with wedge-shaped joints and ; supported by 11⅝-in. (295-mm) tall rubber posts and steel skids. ; In test no. SFH-1, a 5,021-lb (2,277-kg) pickup truck impacted the barrier at 63.4 mph (102.1 km/h) and 24.8 deg. The barrier ; successfully contained and redirected the vehicle. Slight spalling occurred at the impacted joint, but no structural damage occurred and ; the barrier fully restored. The peak lateral acceleration was reduced by up to 47 percent as compared to similar impacts on rigid barriers. ; In test no. SFH-2, a 2,406-lb (1,091-kg) small car impacted the same barrier at 64.3 mph (103.5 km/h) and 24.8 deg. The barrier ; successfully contained and redirected the vehicle. The front face of two of the rubber posts were cut by the wheel rim, which did not ; allow the system to fully restore. The peak lateral acceleration was reduced by up to 23 percent as compared to similar impacts on rigid ; barriers. In test no. SFH-3, a 21,746-lb (9,864-kg) single-unit truck impacted the same barrier as test nos. SFH-1 and SFH-2 at 56.5 mph ; (91.0 km/h) and 14.9 deg. The barrier successfully contained and redirected the vehicle. The front face of the barrier experienced gouging ; and spalling as well as cracking and spalling between five joints. Modifications were recommended to strengthen the concrete at the ; joints to prevent spalling and to mitigate wheel interaction with the posts.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29614/dot_29614_DS1.pdf
• File Type:
  [PDF - 45.48 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:dc6db0ed8207dce8bfe7b7eeaeff2ec30ad1bb5139063dac91a59d9b0ceffd26158fcbf476f15ae0598e16724a0de6ff80249fcb2d2061389044b9786786d246