Evaluation of Full-Scale Pile Load Testing Using Osterberg Cell ® in till and Georgian Bay Shale in Southern Toronto
Why this work is in the frame
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Bibliographic record
Abstract
A full scale, axial Pile Load Test (PLT) using an Osterberg Cell (O-Cell) assembly installed in a test shaft, and a lateral PLT using the same test shaft and a reaction shaft were carried out to inform caisson (drilled shaft) design for a project in Toronto near Lake Shore Blvd.Under supervision of Golder (now WSP), Loadtest (a division of Fugro USA Land Inc.) performed a bi-directional axial load test on the test shaft installed within a nominal 1676 diameter rock socket in the Georgian Bay shale, and a nominal 1829 mm diameter shaft in the overburden soils.Subsequently to the axial load test, a lateral load test was performed using the same test shaft and a reaction shaft.The results of the axial testing were compared with literature and the results of other PLTs carried out in the Southern part of the Greater Toronto Area (GTA) to assess local relationships/correlations between Uniaxial Compressive Strength (UCS) and the geotechnical resistance of rock sockets installed in Georgian Bay shale.Using RSPile (by Rocscience Inc.), the results of the lateral testing were used to refine the strain ratio ( 50 ) parameter for the site's predominantly native silty clay to silty clay till soils, originally estimated from literature, to create a better model of pile/soil response to lateral forces.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it