LATERAL LOAD CAPACITY OF POSTS AND FOOTINGS FOR METAL BEAM GUARDRAILS LOCATED CLOSE TO SLOPES

The effects of the proximity of a slope on the performance of guardrail posts was investigated in centrifuge model tests. Two test series were carried out. The first involved static lateral loading of 23 individual 1/8 scale Douglass Fir Posts installed in different soil types including dry sand and a silty clay compacted at two different water contents. In the second test series four vehicle impact tests were conducted. A 1/8 scale vehicle (bogie) was launched at approximately 60 mph to impact a complete system of posts tied together with a guardrail. Two tests involved posts in compacted clay and the other two were with post in dry sand. For each soil type, two different distances from the posts to the slope were tested. High speed film recordings were analyzed to determine the effectiveness of the guardrail systems.

  • Supplemental Notes:
    • Sponsored by Federal Highway Administration and California State Dept. of Transportation, Sacramento.
  • Corporate Authors:

    University of California, Davis

    Pavement Research Center, One Shields Avenue
    Davis, CA  United States  95616

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Bartlett, R
    • Kutter, B L
  • Publication Date: 1992-9

Language

  • English

Media Info

  • Pagination: 156 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00667246
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-CA-TL-93-02
  • Files: TRIS, USDOT
  • Created Date: Sep 29 1994 12:00AM