Evaluation of bearing capacity due to radial expansion using expanding piles

The engineering community is familiar with different techniques to improve the bearing capacity and settlement characteristics of weak cohesive soils. Preload piers or expanding piles are newly invented method for improving soft soils by means of radial compression. These piers are inserted in the s...

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Main Author:	Molkaraie, Pouya
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/48202/1/PouyaMolkaraieMFKA2013.pdf
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id	my-utm-ep.48202
record_format	uketd_dc
spelling	my-utm-ep.482022017-09-12T01:22:54Z Evaluation of bearing capacity due to radial expansion using expanding piles 2013 Molkaraie, Pouya TA Engineering (General). Civil engineering (General) The engineering community is familiar with different techniques to improve the bearing capacity and settlement characteristics of weak cohesive soils. Preload piers or expanding piles are newly invented method for improving soft soils by means of radial compression. These piers are inserted in the soil and expanded about three times their original cross-sectional area. Due to this expansion, the surrounding soil will be radially stressed, which results in consolidation and general stiffening. The main objective of this research was to investigate improvement in the bearing capacity and settlement changes in a soft clay (Kaolinite) due to applying a preload pier. To gain this goal, soil samples of Kaolinite with undrained shear strength of 15 kPa was prepared in cubic boxes. Then two concrete piles were casted in these soil samples; first one in a cavity expanded by an expanding pile to reach 6 cm diameter and the other one casted in a bored cavity with the same diameter(without expansion). Then piles were tested by loading them until failure. Load testing of the piles yielded a load settlement graph. Based on the graph applying a preload pier improved bearing capacity of the soil up to 12 percent. Settlement of the pile decreased by 11 percent 2013 Thesis http://eprints.utm.my/id/eprint/48202/ http://eprints.utm.my/id/eprint/48202/1/PouyaMolkaraieMFKA2013.pdf application/pdf en public http://libraryopac.utm.my/client/en_AU/main/search/results?qu=Evaluation+of+bearing+capacity+due+to+radial+expansion+using+expanding+piles&te= masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Molkaraie, Pouya Evaluation of bearing capacity due to radial expansion using expanding piles
description	The engineering community is familiar with different techniques to improve the bearing capacity and settlement characteristics of weak cohesive soils. Preload piers or expanding piles are newly invented method for improving soft soils by means of radial compression. These piers are inserted in the soil and expanded about three times their original cross-sectional area. Due to this expansion, the surrounding soil will be radially stressed, which results in consolidation and general stiffening. The main objective of this research was to investigate improvement in the bearing capacity and settlement changes in a soft clay (Kaolinite) due to applying a preload pier. To gain this goal, soil samples of Kaolinite with undrained shear strength of 15 kPa was prepared in cubic boxes. Then two concrete piles were casted in these soil samples; first one in a cavity expanded by an expanding pile to reach 6 cm diameter and the other one casted in a bored cavity with the same diameter(without expansion). Then piles were tested by loading them until failure. Load testing of the piles yielded a load settlement graph. Based on the graph applying a preload pier improved bearing capacity of the soil up to 12 percent. Settlement of the pile decreased by 11 percent
format	Thesis
qualification_level	Master's degree
author	Molkaraie, Pouya
author_facet	Molkaraie, Pouya
author_sort	Molkaraie, Pouya
title	Evaluation of bearing capacity due to radial expansion using expanding piles
title_short	Evaluation of bearing capacity due to radial expansion using expanding piles
title_full	Evaluation of bearing capacity due to radial expansion using expanding piles
title_fullStr	Evaluation of bearing capacity due to radial expansion using expanding piles
title_full_unstemmed	Evaluation of bearing capacity due to radial expansion using expanding piles
title_sort	evaluation of bearing capacity due to radial expansion using expanding piles
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2013
url	http://eprints.utm.my/id/eprint/48202/1/PouyaMolkaraieMFKA2013.pdf
_version_	1747817332631142400

Evaluation of bearing capacity due to radial expansion using expanding piles

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