Te-An Wang Advisor: Dr. Sam Helwany

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Presentation transcript:

Te-An Wang Advisor: Dr. Sam Helwany Soil–pile thermomechanical behavior

Geothermal Energy Alternative energy. Stable temperature in the ground makes deep soil layers a good thermal reservoir. From: https://www.builditsolar.com/Projects/Cooling/EarthTemperatures.htm

+ = &  ? Energy Foundations Summer Winter Failure Foundation Structural Elements Heat Sinks Energy Foundations + = Heat Pump System Pile (Heat Exchanger) Summer Winter Failure Foundation &  ?

Performance of Energy Pile Heat carrier fluid temperature changes with the seasons. Pile surface temperature would be affected.

Pile Load Test Pile load test is a commonly used field test which provides an idea of both shaft resistance and end resistance.

Methodology Step 1. Apply thermal load Step 2. Apply axial load on pile

Results The pile has encountered increased settlement following thermal cycling. This experimental study presents evidence about the temperature-induced changes in pile capacity

Future Work Perform FEM analysis to gain insight into the effects of heating/cooling cycles generate by an energy pile on the behavior of surrounding saturated clay, particularly the generation and dissipation of pore water pressures.