Application of extended end composite pile design in pile foundation work

Article


Kim, S., Whang, S., Kim, S. and Hyung, W. G. 2017. Application of extended end composite pile design in pile foundation work. Proceedings of the Institution of Civil Engineers - Geotechnical Engineering. 170 (5), pp. 455-465.
AuthorsKim, S., Whang, S., Kim, S. and Hyung, W. G.
Abstract

Pre-tensioned, spun, high-strength concrete (PHC) piles are the most commonly used type of pile in South Korea. Approximately 60% of the pile's strength is used in the design bearing capacity, and the rest is simply residing in the ground. Increasing the ground bearing capacity is crucial to reduce waste of the pile strength and to improve efficiency. Extended end (Ext) piles are a new kind of composite pile that can overcome the weakness of PHC piles. This study investigates the behaviour of Ext piles. Through field testing, it is confirmed that the bearing capacity of Ext piles is better than PHC piles by about 35% to 50%. Based on the study findings, the Ext pile design reduces the number of piles by around 38% compared to the PHC pile design through application in a selected construction site. The increased bearing capacity of Ext piles affects both work duration and project cost, which are 25% and 14% decreased, respectively.

JournalProceedings of the Institution of Civil Engineers - Geotechnical Engineering
Journal citation170 (5), pp. 455-465
ISSN1353-2618
Year2017
PublisherThomas Telford (ICE Publishing)
Accepted author manuscript
License
File Access Level
Anyone
Digital Object Identifier (DOI)doi:10.1680/jgeen.16.00043
Web address (URL)https://doi.org/10.1680/jgeen.16.00043
Publication dates
Online06 Sep 2017
Publication process dates
Accepted29 Sep 2016
Deposited03 Mar 2020
Copyright holder© 2017 ICE Publishing, all rights reserved.
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