New Dynamic Center Piece for Montréal Delivers on All Challenges
Bibliographic record
Abstract
The Canal Lachine Bridge is the new signature structure in downtown Montréal, Québec, Canada. The curved cable stayed bridge is the center piece of the $1.5 billion Design-Build Turcot Project. The 350m long structure will be built in stages to accommodate the overall project construction schedule. Delivered within the fast-paced Design-Build environment, the design required close collaboration between designer, contractor, architect, fabricator and owner. The 50m wide superstructure carries two independent carriageways with a total of six traffic lanes. The main span utilizes a pylon and single plane fan arrangement of stays to support the 88m main span over the Lachine canal. The unique design had to accommodate building one carriageway to carry traffic for two years without cable supports before the second carriageway could be erected. Both halves will be tied together at the lower cable anchorages and the pylon location after establishing composite action. In this stage, they will form a unique, highly redundant composite steel grillage system that achieves both, efficiency and elegance. This innovative extradosed bridge utilizes multiple steel box girders connected by cross frames and transverse tie-beams to create a single superstructure type. Composite action is achieved using slender full-depth precast deck panels to accelerate construction. The continuous superstructure is fully isolated from the substructure to control seismic design forces on substructure elements and their foundations. This allowed single columns and mono-pile foundations.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.005 | 0.001 |
| Scholarly communication | 0.010 | 0.005 |
| Open science | 0.002 | 0.006 |
| Research integrity | 0.003 | 0.004 |
| Insufficient payload (model declined to judge) | 0.707 | 0.464 |
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".