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:
  Evaluation Highway Safety Impact Tests Median Barriers Spalling
• 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:dc6db0ed8207dce8bfe7b7eeaeff2ec30ad1bb5139063dac91a59d9b0ceffd26158fcbf476f15ae0598e16724a0de6ff80249fcb2d2061389044b9786786d246
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29614/dot_29614_DS1.pdf
• File Type:
  [PDF - 45.48 MB ]