Application of extended end composite pile design in pile foundation work

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 re...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Civil Engineers. Geotechnical engineering 2017-10, Vol.170 (5), p.455-465
Main Authors: Kim, Seungho, Whang, Seoung-Wook, Kim, Sangyong, Hyung, Won Gil
Format: Article
Language:English
Subjects:
Bearing capacity
Construction sites
Design
Duration
High strength concretes
Materials durability
Pile foundations
Piles
Site planning
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1353-2618
1751-8563
DOI:10.1680/jgeen.16.00043