HELICAL SCREW PILES (HSP) CAPACITY FOR AXIAL CYCLIC LOADINGS IN COHESIVE SOILS
Bibliographic record
Abstract
The use of helical anchors has gained popularity and has evolved into several innovative applications, including Helical Screw Piles (HSP). A comprehensive research program is being undertaken to explore the use of HSP for the seismic retrofitting of the foundations of existing structures and for implementation of new buildings in seismic areas. The research is motivated by some needs arisen from the recent upgrade of the Canadian seismic code. This paper focuses on the seismic performance of HSP capacity for axial cyclic loadings in cohesive soils. The main objectives of the paper are to evaluate the geotechnical capacity of this foundation system and to understand its cyclic behavior and load transfer mechanism. A filed testing program was conducted involving monotonic and cyclic load testing of three instrumented HSPs in cohesive-frictional soil. The piles performed well in terms of both pile capacity and displacement under cyclic loading. It was found that 15 cyclic loadings on the piles reduced the axial compression capacity of the pile by less than 10%.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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 source (direct Gemma or distilled Codex), 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".