Improved models of cable-to-post attachments for high-tension cable barriers.

Details

• Creators:
  Stolle, Cody S. ; Reid, John D. ; Bielenberg, Robert W.
• Corporate Creators:
  Midwest Roadside Safety Facility
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Cables Impact Tests Median Barriers Median Strips Resistance Tests Roads--Guard Fences--Testing Roadside Structures Simulation Traffic Accidents--Research Traffic Crashes
• Publication/ Report Number:
  TRP-03-267-1212
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final report.
• Corporate Publisher:
  Nebraska Transportation Center
• Abstract:
  Computer simulation models were developed to analyze and evaluate a new cable-to-post attachment for high-tension cable
  
  barriers. The models replicated the performance of a keyway bolt currently used in the design of a high-tension cable
  
  median barrier being developed at the Midwest Roadside Safety Facility. Component tests of the keyway bolts were
  
  simulated and compared to the component test results. Accurate friction, fracture strain, and stress-strain material properties
  
  were determined for a solid element model of the keyway bolt by applying actual load curve measured from the test to a
  
  simulated pull cable. By simulating the material properties of the solid element keyway bolt in bending, torsion, and tension
  
  of a rod, load curves were developed for a simplified beam element model of the keyway bolt as well.
  
  When material properties were finalized, the solid and beam element models of the keyway bolt were inserted in bogie test
  
  models and simulated again. By analyzing the bogie testing results, it was determined that due to the very small size of the
  
  keyway bolt and potential contact difficulties, solid element models of the keyway bolt may be impractical for full-scale
  
  simulation purposes. However, the beam element models were determined to be advantageous and had a very small
  
  computational cost in comparison.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:dd97126066f469a58bccdb3d9eead4ac2817a6ac1eda4199ba68a3eebeb5d97a934baea5d80d97b400e1df065b9a948bdd3768c05a4014926a052c487319b135
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25448/dot_25448_DS1.pdf
• File Type:
  [PDF - 5.90 MB ]