Design guidance on the use of a row of spaced piles to stabilise clay highway slopes

A single row of bored piles spaced at intervals along a clay slope provides an effective remedial measure to improve the stability of slopes that have either failed or are showing incipient signs of failure. The technique can also be used to steepen slopes so that highway corridors can be widened within existing boundaries to accommodate extra vehicular lanes or other modes of transport. Although the piling technique is now becoming more frequently used on the highway network, further design guidance is needed to ensure economy of design and safe practice. This report provides additional guidance based on a programme of research which has included a review of current practice, centrifuge and analytical modelling, and a full scale instrumented trial on the network. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1846086310
• Authors:
  • CARDER, D R
• Publication Date: 2005-4

Language

• English

Media Info

• Pagination: 18p
• Serial:
  • TRL REPORT TRL632
  • Publisher: TRL
  • ISSN: 0968-4107

Subject/Index Terms

• TRT Terms: Clay; Design; Failure; Highways; Pavement widening; Pile groups; Slope stability; State of the art reports; Support piles
• ITRD Terms: 4177: Clay; 9011: Design (overall design); 5520: Failure; 2755: Highway; 3399: Pile; 3388: Pile group; 5783: Slope stability; 8588: State of the art report; 2889: Widening (road, bridge)
• Subject Areas: Design; Geotechnology; Highways; I42: Soil Mechanics; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 01011681
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 1-84608-631-0
• Files: ITRD
• Created Date: Dec 19 2005 3:25PM