MODELLING OF HIGH PRESSURE GROUTED COMPACTION ANCHORS

Pressure grouting of anchors deployed in granular soils is a widely used construction technique in which a grout bulb is created by expanding the diameter of the borehole cavity in the region of the fixed length. A compaction anchor, as discussed in this paper, is created by fixed length expansion only and not by the injection or permeation of grout into the surrounding soil. The expansion process compacts the soil adjacent to the fixed anchor length altering the stress regime and increasing the strength and stiffness of the soil. A detailed investigation of the effect of the compaction process on the load capacity of model anchors, tested at field scale stresses in a geotechnical centrifuge, has been undertaken at the University of Manchester. The design, development and use of the test equipment is discussed and test results showing the effectiveness of the system are presented. (A) For the covering abstract see IRRD 898458.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727726072
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Egan, D
  • MERRIFIELD, C M
• Conference:
  • GROUND ANCHORAGES AND ANCHORED STRUCTURES. PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ORGANISED BY THE INSTITUTION OF CIVIL ENGINEERS AND HELD IN LONDON, UK, ON 20-21 MARCH 1997
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: p. 460-8

Subject/Index Terms

• TRT Terms: Anchorages; Bearing capacity; Bolts; Centrifugal force; Compaction; Conferences; Expansion; Grout; Heat transfer; Interfaces; Loads; Measurement; Pressure; Size; Soils; Stresses; Transfer characteristics
• ITRD Terms: 3420: Anchorage; 3085: Bearing capacity; 3888: Bolt; 5404: Centrifugal force; 5904: Compaction (state of); 8525: Conference; 9014: Dimension; 6720: Expansion; 4729: Grout; 5429: Interface; 5567: Load; 6136: Measurement; 5412: Pressure; 4156: Soil; 5575: Stress (in material); 6731: Transfer (phys)
• Subject Areas: Construction; Data and Information Technology; Geotechnology;

Filing Info

• Accession Number: 00752340
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-7277-2607-2
• Files: ITRD
• Created Date: Sep 18 1998 12:00AM