Methods of Interpreting Structural Incompatibility in Bored Pier Uplift Test
Publication: Journal of Geotechnical Engineering
Volume 119, Issue 12
Abstract
This paper presents two methods of analysis of data obtained from an uplift loading test on an instrumented bored pier reinforced only by a central steel angle to which the uplift load was applied. The objective of the analyses was to estimate the unit shaft resistance profile along the length of the pier at pull‐out. The analysis methods consisted of a load‐movement matching technique to obtain the unit shaft resistance profile down the pier in conjunction with a stability plot to determine pier integrity, and an iterative method to determine the mobilized unit shaft resistance down the pier from measured strains. Iteration was required because the uplift load caused cracking in the concrete of the pier, resulting in a loss of structural compatibility between the concrete and the steel angle. The two methods of analysis resulted in unit shaft resistance profiles that were in good agreement, giving confidence in the results.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Banerjee, P. K., and Butterfield, R. (1983). “Developments in soil mechanics and foundation engineering—model studies.” Applied Science Publishing, London, England.
2.
Chin, F. K. (1970). “The estimation of ultimate load on a pile not carried to failure.” Proc., 2nd S. E. Asian Conf. on Soil Mech. and Found. Engrg., South East Asian Geotechnical Society, Singapore, 81–90.
3.
“Concrete structures code.” (1988). AS 3600, Standards Association of Australia, Sydney, Australia.
4.
Coyle, H. M., and Reese, L. C. (1966). “Load transfer of axially loaded piles in clay.” J. Soil Mech. and Found. Div., ASCE 92(2), 1–26.
5.
“Geotechnical investigation of transmission line tower failures at Harlin.” (1990). Draft Rep. No. SSI/13161‐1, Douglas, D. J. & Partners Pty Ltd., Brisbane, Australia.
6.
“International recommendations for the design and construction of concrete structures—principles and recommendations.” (1970). 6th FIP Congress: Comité Européen du Béton—Federation Internationale de la Precontrainte, Cement and Concrete Association, London, England.
7.
Neville, A. M. (1977). Properties of concrete, 2nd Ed., Pitman Publishing Ltd., London, England.
8.
Randolph, M. F., and Wroth, C. P. (1978). “Analysis of deformation of vertically loaded piles.” J. Geotech. Engrg. Div., ASCE, 104(12), 1465–1488.
9.
Smith, I. M. (1982). Programming the finite element method, with Applications to Geomechanics. John Wiley and Sons Ltd., London, England.
Information & Authors
Information
Published In
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Aug 19, 1991
Published online: Dec 1, 1993
Published in print: Dec 1993
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.