Pile-Soil Interactions under Thermo-Mechanical Conditions Imposed by Geothermal Energy Piles in Sand
Bibliographic record
Abstract
The load transfer mechanism of the geothermal energy piles involves thermal soil-structure interaction. In the present work, pile-soil interaction is investigated for the energy piles using axisymmetric nonlinear finite element analysis procedure. For the analyses carried out herein, the stress-strain response of piles is considered to be linear-elastic. The stress-strain response of sand is simulated using state parameter based constitutive model CASM. The CASM model is implemented in finite element software Abaqus through user material subroutine. Floating geothermal energy piles of different lengths and diameters in sand are analyzed under allowable axial loading and thermal loading. Two types of sands namely Ottawa sand and Toyoura sand are considered for analyses. The shear stress in soil at the pile-soil interface is studied. In addition, parametric sensitivity studies are performed by varying relative density of sand and coefficient of earth pressure of sand. It has been observed from the results that pile length, relative density of the soil and the axial load magnitude are the key parameters in deciding the load-displacement response of geothermal energy piles subjected to thermo-mechanical loading. Moreover, the soil particle shape and size also affect the magnitude of shear stress in soil at pile-soil interface. Negative shear stress generates at the pile-soil interface when subjected to thermal loading which causes the drag load on the pile.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.008 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".