Evaluation of Temperature Data of Confederation Bridge: Thermal Loading and Movement at Expansion Joint
Bibliographic record
Abstract
Examination of the critical observed temperature profiles will lead to the following conclusions: 1 Thick bottom slabs in deep sections (Sections 1 and 2) lead to lower than predicted temperatures and significant tensile stresses in these slabs. 2 The difference in temperature between the two webs of box girders are the source of a horizontal thermal gradient in deep box girder sections (Sections 1 and 2). For shallower section (Section 3), this was not observed. 3 The effect of horizontal temperature gradient cannot be ignored for deep sections when calculating continuity stresses. For shallow section this can be ignored. 4 The maximum seasonal displacement the bridge experienced during the 3-year period was found to be 226 mm. The Canadian standard CSA-S6-00 gives a good estimate for maximum temperature but seriously underestimates minimum temperature and differential temperature, for deep sections. Also, the code lacks guidance regarding design values for horizontal differential temperature.
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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 | 0.000 | 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 | 0.000 | 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) | 0.002 | 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".