Full-scale tests on axial bearing capacity and load transfer characteristics of waveform micropile

Y Jang

In the proceedings of: GeoVancouver 2016: 69th Canadian Geotechnical Conference

Session: SOIL AND TERRAIN CHARACTERIZATION - IV In-Situ Geotechnical Testing

ABSTRACT: The waveform micropile is a new foundation concept using the jet grouting method that was developed for the purpose of obtaining a greater bearing capacity compared to that of the conventional micropile. The increase in the bearing capacity of the waveform micropile is principally expected to contribute to save construction cost and to decrease the pile length. As the waveform micropile has a modified construction process and shape compared to the conventional type, it is necessary to understand the characteristics of the pile behavior for a better design. Hence, a full-scale construction and load test was conducted using three different types of micropile, including the waveform micropile. The results clearly showed that the waveform micropile with the shear key achieved a higher axial bearing capacity, about 2.25 times the capacity of the conventional micropile and 1.38 times that of the jet-grouted micropile without the shear key.

RÉSUMÉ: utilisant la méthode jet grouting qui a été développé dans augmentation de la capacité portante de la micropile afin de contribuer en termes de frais de construction et de diminuer par rapport au type conventionnel, il est important de comprendre les caractéristiques comportementales de la pile pour aient clairement micropile conventionnelle et 1.38 outing. Il a également été remarqué que le sol entre les clés de cisaillement devient relativement compressible et exerce une plus grande résistance. Keywords: Micropile, Waveform micropile, Jet grouting method, Jet-grouted micropile, Pile load test

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Cite this article:
Y Jang (2016) Full-scale tests on axial bearing capacity and load transfer characteristics of waveform micropile in GEO2016. Ottawa, Ontario: Canadian Geotechnical Society.

@article{3894_0721221658,author = Y Jang,title = Full-scale tests on axial bearing capacity and load transfer characteristics of waveform micropile,year = 2016}