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Geotechnical and Geological Engineering

Erschienen in:

30.12.2016 | Original paper

Soil Deformations During Casing Jacking and Extraction of Expanded-Shoe Piles, Using Model Tests

verfasst von: Chang-Guang Qi, Magued Iskander, Mehdi Omidvar

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 2/2017

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Abstract

A small-scale 1-g transparent soil model was employed to investigate soil deformations caused by casing-assisted pile jacking of plastic tube cast-in-place concrete piles. The transparent soil was made of fused quartz and a refractive index matched blended oil. Models were sliced with a laser light sheet and digital images were employed to record jacking and extraction of the casing, allowing the use of digital image correlation to derive the generated displacement fields, non-intrusively. The effects of the shoe shape as well as use of a casing to jack the pile were investigated. It was found that under unconfined conditions, soil response to jacking is significantly affected by the pile shoe shape, with displacements adjacent to a conical shoe markedly smaller compared to a flat shoe. Moreover, casing extraction results in recovery of some of the soil deformation that takes place during pile jacking.

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Titel: Soil Deformations During Casing Jacking and Extraction of Expanded-Shoe Piles, Using Model Tests
verfasst von: Chang-Guang Qi
Magued Iskander
Mehdi Omidvar
Publikationsdatum: 30.12.2016
Verlag: Springer International Publishing
Erschienen in: Geotechnical and Geological Engineering / Ausgabe 2/2017
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-016-0145-0

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