Comparative Examinations of Single Bored Piles Using International Codes
- 1 Geotechnical Engineering and Foundations, Faculty of Engineering, Port Said University, Port Said, Egypt
- 2 Faculty of Engineering, Port Said University, Port Said, Egypt
- 3 General Authority for Port-Said Ports, Port Said, Egypt
Abstract
This paper presents some aspects of the load-settlement behavior for large diameter bored piles using four different international codes, namely: ECP 202 [1], DIN 4014 [2], AASHTO [3] and French Code [4]. Ultimate capacities for 38 pile load tests founded in realistic multi-layered soils in Delta and Port Saidareas atEgyptare evaluated using modified Chin (1970) method and compared to ultimate load predictions obtained by the aforementioned codes. Many statistical analyses were conducted on the total pile loads and individual contributions of tip and skin resistances. Based on code predictions of ultimate pile loads, an empirical modified load-settlement model is proposed. This model will simplify to a great extent the analysis of piled-raft systems as it can effortlessly predict pile settlement due to the load on pile itself. Comparisons showed that the pile load test is an irreplaceable process for determining the ultimate capacity of piles.
- ECP 202, “Egyptian Code for Soil Mechanics—Design and Construction of Foundations,” Part 4, Deep Foundations, 2005.
- Deutsches Institute fur Normung (DIN 4014), German Association for Earth Works and Foundation Engineering, 1990.
- AASHTO, “LRFD Bridge Designs Specifications—SI Units,” 3rd Edition, Washington DC, 2005.
- MELT-Ministère de l’Equipement, du Logement et des Transports (In English: Technical Rules for the Design of Foundations of Civil Engineering Structures), FASCICULE N°62-Titre V, Textes Officiels N° 93-3 T.O., 1993, 182 p.
- S. Hossain, V. Omelchenko, M. A. Haque and J. Hossain, “Capacity of a Drilled Shaft in Mid-Atlantic Region,” University of Texas at Arlington, Arlington, EJGE, Vol. 13, 2008, 16 p.
- A. M. Harraz, W. N. Houston, K. D. Wash, C. R. Perry and S. L. Houston, “Comparison of Measured and Predicted Skin Friction Values for Axially Loaded Drilled Shaft Foundations in Gravelly Soils,” Geotechnical Special Publication, No. 132, Advances in Deep Foundations, 2005.
- A. H. Abdel-Rahman, M. Rabie and M. F. Awad-Allah, “Comparison between Egyptian Code, DIN 4014, and AASHTO Methods of Predicting Ultimate Bearing Capacity of Large Diameter Bored Piles,” El-Azher University Engineering Journal, 2006.
- M. El Gendy, J. Hanisch and M. Kany, “Empirische Nichtlineare Berechnung von Kombinierten Pfahl-Plattengründungen Bautechnik,” 2006. http://dx.doi.org/10.1002/bate.200610053
- R. Mindlin, “Force at a Point in the Interior of a SemiInfinite-Solid,” Journal of Applied Physics, Vol. 7, No. 5, 1936, pp. 195-202. http://dx.doi.org/10.1063/1.1745385
- V. N. S. Murthy, “Advanced Foundation Engineering,” Geotechnical Engineering Series, Satich Kumar Jain for CBS Publisher, India, 2007.