A METHOD OF DETERMINATION OF K - THE LATERAL EARTH PRESSURE COEFFICIENT FOR SHAFT FRICTION

The author discusses the limitations of the "static formula" and derives a theoretical expression for k taking into account the stress distribution around piles requiring detailed stress measurements and sophisticated studies. He assumes that the vertical effective stress adjacent to the pile shaft remains constant up to failure. Two equations for the shaft resistance are derived assuming failure takes place at the interface between the soil and the shaft. There is good agreement between predicted and values of K measured by J B Burland although the predictions assume that the failure takes place on a horizontal plane. No reason is given for the adoption of the horizontal plane as a failure plane as opposed to any other. /TRRL/

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00174653
Corporate Authors:
Foundation Publications Limited

7 Ongar Road
Brentwood CM15 9AU, Essex, England
Authors:
- Ting, AOM
Publication Date: 1977-4

Language

English

Media Info

Features: Figures; References;
Pagination: p. 22-23
Serial:
- GROUND ENGINEERING
- Volume: 10
- Issue Number: 3
- Publisher: EMAP CONSTRUCT LIMITED
- ISSN: 0017-4653

Subject/Index Terms

TRT Terms: Coefficient of friction; Deformation curve; Earth pressure; Failure; Forecasting; Friction; Mathematical models; Shafts (Machinery); Soils; Stresses; Support piles
Uncontrolled Terms: Active earth pressure; Lateral pressure; Passive earth pressure
ITRD Terms: 5726: Earth pressure (active); 5727: Earth pressure (passive); 5520: Failure; 5452: Friction; 6473: Mathematical model; 3399: Pile; 4156: Soil; 5575: Stress (in material)
Subject Areas: Geotechnology; Highways;

Filing Info

Accession Number: 00163832
Record Type: Publication
Source Agency: Transport and Road Research Laboratory (TRRL)
Report/Paper Numbers: Analytic
Files: ITRD, TRIS
Created Date: Dec 27 1977 12:00AM