Design of a New Full-Scale Vertical Ground Deformation Facility for Testing Buried Pipelines
Bibliographic record
Abstract
Current full-scale experimental practices for pipes subjected to ground movements are limited to simple, abrupt ground movement profiles, such as normal faults; however, more complicated ground movements from earthworks and ground subsidence occur in the field. A new facility is being developed at Queen’s University to simulate these more complex ground movements. The facility is the next generation of the laboratory’s normal fault simulator (the “Split Box”) and consists of a full-scale soil chamber with a stationary floor and three independent moving floor sections. Hydraulic actuators will be installed at both ends of the facility to permit investigations of relative axial ground movement and upheaval buckling. These new features will facilitate improved understanding of soil–pipe interaction problems. The conceptual design of the facility is discussed and ABAQUS soil modelling is used to verify the feasibility of creating a versatile set of vertical ground movement profiles at depths practical within a laboratory setting. The novel techniques that will be implemented in the new facility form an important next step in modeling and understanding the response of buried pipelines subjected to differential ground movement and are expected to aid in the improvement of pipeline design and assessment.
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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 | 0.001 |
| 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 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".