Relationship Between Railway Ground-Borne Vibration Propagation And Track Elevation – A Field Study
Bibliographic record
Abstract
Railway corridors form vital transportation routes for moving goods and people across Canada. These routes have seen explosive growth of close proximity residential developments in Canada’s major cities and the impacts due to rail traffic on residences is a growing concern. A relationship between railway ground-borne vibration propagation and track elevation relative to points of reception was investigated and proposed based a field study of vibration measurements taken adjacent to railway corridors in Ontario and Alberta. The purpose of this study was to compare vibration measurements under three conditions: track elevated on berm, track at grade and track below grade, relative to points of reception. Other railway variables such as track condition, train speed and soil conditions were noted however were not assessed for this paper. Results of this study indicate track elevation is a factor in railway ground-borne vibration propagation. The importance of this relationship on land-use planning adjacent to railway corridors is discussed and existing guidelines for ground-borne vibration and vibration induced noise are summarized.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 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) | 0.002 | 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".