Dynamic Subcomponent Testing and Finite Element Simulation of Guardrail Systems with Alternative Post Installation Methodologies

Details

• Creators:
  Scott, David ; Stewart, Lauren ; White, Donald ; Bakhtiary, Esmaeel ; Lee, Seo-Hun
• Corporate Creators:
  Georgia. Dept. of Transportation. Office of Performance-Based Management and Research ; Georgia Institute of Technology. School of Civil and Environmental Engineering
• Subject/TRT Terms:
  • Guardrails
  • Dynamic tests
  • Finite element method
  • Mow strip
  • Dynamic testing
  • Finite element analysis
• Publication/ Report Number:
  FHWA-GA-18-1508
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Georgia
• Edition:
  Final Report
• Corporate Publisher:
  Georgia. Dept. of Transportation
• Abstract:
  This report details the results of an experimental and numerical investigation into the performance of guardrail posts driven through asphalt layers. Dynamic subcomponent tests were performed on a number of post/asphalt layer configurations. The dynamic test results were used to develop performance criteria to indicate expected levels of restraint for guardrail posts driven through asphalt layers. In addition, subcomponent and full-scale numerical simulations were performed that included a more detailed characterization for the asphalt layer. The tests and simulations indicate that geometric parameters of the asphalt layer are the critical parameters in evaluating the restraint of the asphalt layer on the post. Reducing specific geometric parameters or making targeted alterations of the asphalt layer may reduce restraint in the system to a level similar to that found when using a leave-out around the post.
• Format:
  PDF
• Funding:
  0013698
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37002/dot_37002_DS1.pdf
• File Type:
  [PDF - 18.03 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:2a0a963d07b38906fb7770eecf2d2dd4ccc08ab5127834828dfa2e670164d2f3