Compliance Crash Testing of the CA ST-70SM Side Mounted Bridge Rail

Details

• Creators:
  Her, Vue ; Caldwell, Christopher ; Jewell, John ; Meline, Robert J.
• Corporate Creators:
  Roadside Safety Research Group
• Corporate Contributors:
  California Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Bridge Railings Crash Tests Field Tests Finite Element Method Median Barriers Stiffness Structural Tests Test Vehicles
• Publication/ Report Number:
  FHWA/CA17-2557
• Resource Type:
  Tech Report
• Geographical Coverage:
  California ; United States
• Edition:
  Final
• Corporate Publisher:
  California. Department of Transportation
• Abstract:
  The California ST-70SM Side Mounted Bridge Rail was developed and tested in accordance with the American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware 2009 (MASH 2009). The barrier is 42 inches (1.07 m) in height and consists of four rails with posts every ten feet. It is mounted to the side of a bridge deck by five 1-1/4 inch (32 mm) high strength anchor rods. On each rod, there are two disc springs stacked together, totaling 10 per post. For testing, the end posts were rigidly mounted to the bridge deck and did not have disc springs. The disc springs reduce the effective stiffness of the post, allowing the rails to distribute more of the load to adjacent posts and lessening damage to the bridge deck. The barrier tested was 76 feet (23.2 m) in length and mounted to a bridge deck, which was anchored to a 4.5’ x 10’ x 76’ (1.4 m x 3.0 m x 23.2 m) anchor block. The barrier was constructed at the Caltrans Dynamic Test Facility in West Sacramento, California. Three full-scale crash tests were conducted under MASH 2009 Test Level 4 for longitudinal barriers. All three tests met MASH 2009’s evaluation criteria for Test Level 4 longitudinal barriers. The results of all three test were within the limits of MASH 2009 guidelines. The California ST-70SM Side Mounted Bridge Rail tested in the project is recommended for approval on California highways in areas designated as Test Level 4.
• Format:
  PDF
• Funding:
  FHWA/ CA17-2557
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:cffb6c76cde8247abb0ca4ae387b411f8a78afaae911e4999a0ca15357a52687
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/64456/dot_64456_DS1.pdf
• File Type:
  [PDF - 40.87 MB ]