Bibliographic record
Abstract
The Medicine River Bridge is located in central Alberta on Highway 11, midway between Red Deer and Rocky Mountain House. The structure, built in 1954, is a 3-span, cast-in-place concrete girder bridge with a clear roadway of 8.5 m. With traffic volumes in the order of 5,000 AADT the bridge is an important link for local commuters to Red Deer and for oilfield traffic to west-central Alberta. Two deficiencies were identified regarding the functionality of the bridge. First, the bridges load capacity was in question due to shear cracking of the girders and second, the narrow bridge clear roadway and out-of-date bridgerails were identified as being a safety concern. An assessment of the bridge and development of rehabilitation alternatives showed that bridge rehabilitation was more economical than bridge widening or bridge replacement. A load evaluation of the bridge was carried out in accordance with the Canadian Highway Bridge Design Code. This load evaluation showed that the girders were deficient in negative moment capacity but not in shear capacity. The girders were strengthened by attaching carbon fiber reinforced plates to the bottom of the bridge deck. Existing bridgerails were upgraded by mounting a new steel HSS rail in front of the existing bridgerail posts and in line with the existing curb roadway face. To protect traffic from the ends of the bridgerail the approach rail guardrail was securely fastened to the ends of the new HSS rails and locally stiffened to meet crash test requirements. Rehabilitation of the bridge was carried out in the fall of 2002. This paper describes the deficiencies identified in the Medicine River Bridge, the assessments conducted to select an appropriate rehabilitation strategy, and the design and construction of the selected bridge rehabilitation strategy.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.083 | 0.011 |
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".