DESIGN OF DRILLED SHAFTS SUPPORTING HIGHWAY SIGNS

The general behavior of single drilled shafts subjected to lateral loads and of their design methods are reviewed. Such shafts can economically be used as sign supports in highway work. A simplified but accurate design method that assumes rigid-body motion of the pile and that the lateral soil resistance varies linearly with the depth at ultimate load but reverses direction at the point of rotation of the shaft is developed. Charts are given for routine design. Methods for determining the maximum soil resistance at the surface and the slope of its assumed linear variation are reviewed and conservative recommendations are made for determining these values. Methods for determining the soil-strength parameters for the analysis are reviewed and design examples are given for both cohesive and cohesionless soils. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/616/616-013.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=DESIGN+OF+DRILLED+SHAFTS+SUPPORTING+HIGHWAY+SIGNS&author=J.+DAVIDSON&author=C.+Hays&author=E.+Hagan&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309025958
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Foundations of Bridges and Other Structures. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • DAVIDSON, JOHN L
  • Hays Jr, Clifford O
  • Hagan Jr, Eugene M
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 62-66
• Monograph Title: Soil mechanics: rutting in asphalt pavements, embankments on varved clays and foundations
• Serial:
  • Transportation Research Record
  • Issue Number: 616
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Breaking loads; Cohesive soils; Depth; Design; Design methods; Granular soils; Structural supports; Support piles; Traffic signs
• Uncontrolled Terms: Drilled shafts; Lateral pressure; Soil resistivity
• Old TRIS Terms: Supports
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways;

Filing Info

• Accession Number: 00163000
• Record Type: Publication
• ISBN: 0309025958
• Files: TRIS, TRB
• Created Date: Oct 13 1977 12:00AM