Field load testing and integrity tests of CFA piles in sandy deposits
Fanyu Zhu, Scott Peaker
Dans les comptes rendus d’articles de la conférence: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNCSession: Soil Mechanics and Foundations (Deep Foundations I)
ABSTRACT: CFA piles were adopted to support a multi-storey residential building with one level of basement. The soils below the basement floor consisted of a 6 m thick layer of weak silty clay overlying dense to very dense sandy deposits. The test pile of 0.51 m in diameter and 12.7 m in length was loaded to 3800 kN. The bearing capacity of the test pile is significantly higher than the theoretical estimation. During the installation of the CFA piles, it was observed that the amount of grout used was typically 1.4 to 1.6 times the theoretical nominal volume of the augered holes. The extra grout is considered to have infiltrated into the sandy deposits, making the effective pile diameter larger than the nominal. Post-installation pile integrity tests (PIT) of production piles also indicated enlargement of the pile shaft diameter.
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Citer cet article:
Zhu, Fanyu, Peaker, Scott (2018) Field load testing and integrity tests of CFA piles in sandy deposits in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Zhu_GEO2018_134,
author = {{Zhu, Fanyu}, {Peaker, Scott}}
title = {Field load testing and integrity tests of CFA piles in sandy deposits }
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Field load testing and integrity tests of CFA piles in sandy deposits }
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }