Effects of pile length on the settlement behavior of floating energy piles subjected to thermal cycles
Charles WW Ng, QJ Ma
In the proceedings of: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNCSession: Shallow Geothermal Energy Exchange
ABSTRACT: Centrifuge modelling of floating energy piles subjected to cyclic thermal loading was conducted in saturated Toyoura sand, with focus on the effects of the embedded pile length. The energy piles were applied 15 two-way heating-cooling cycles with an amplitude of about 10 °C. A constant vertical working load with a factor of safety equal to 2.0 was maintained during the test. Reference piles with the same working load but not cyclic thermal loading were also tested for comparison. The results show that the energy piles experience ratcheting settlement during thermal cycles, and accumulate more irreversible settlement compared to the reference piles. The irreversible settlement of the energy piles tends to stabilize with thermal cycles, but does not stabilize completely by the end of the 15 thermal cycles. In addition, it is observed that as the embedded pile length increases the accumulated irreversible settlement of energy piles decreases.
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Ng, Charles WW, Ma, QJ (2018) Effects of pile length on the settlement behavior of floating energy piles subjected to thermal cycles in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Ng_GEO2018_269,
author = {{Ng, Charles WW}, {Ma, QJ}}
title = {Effects of pile length on the settlement behavior of floating energy piles subjected to thermal cycles}
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Effects of pile length on the settlement behavior of floating energy piles subjected to thermal cycles}
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }