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Record W22667811 · doi:10.1037/h0093960

Lions' Gate Bridge Suspended Span Replacement

2009· article· en· W22667811 on OpenAlexaboutno aff
Darryl D. Matson

Bibliographic record

Venue2009 ANNUAL CONFERENCE AND EXHIBITION OF THE TRANSPORTATION ASSOCIATION OF CANADA - TRANSPORTATION IN A CLIMATE OF CHANGE · 2009
Typearticle
Languageen
FieldEngineering
TopicStructural Engineering and Vibration Analysis
Canadian institutionsnot available
Fundersnot available
KeywordsBridge (graph theory)Span (engineering)DeckSuspension (topology)TrussEngineeringTransport engineeringCivil engineeringForensic engineeringStructural engineering

Abstract

fetched live from OpenAlex

The three lane Lions' Gate Suspension Bridge is a landmark structure in Vancouver, British Columbia, Canada. The 472 meter center span marks the entrance to one of the busiest harbours on the west coast of North America. Constructed in 1938, the bridge was privately financed, and as such, long term durability was often sacrificed in favor of initial capital cost savings. In 1997, Buckland & Taylor Ltd. was retained to design the replacement of the entire suspended structure (deck, sidewalks, stiffening trusses, and suspension hangers). Maintaining the traffic (70,000 vehicles per day) on the bridge during the replacement was a critical requirement that influenced every aspect of the design. After the design was completed in December 1998, the project was tendered. Between September 2000 and September 2001, the suspended structure of the 60-year old bridge was replaced during 10-hour night time closures plus a few longer closures on weekends. The bridge was open to full traffic at all other times during the reconstruction. The final paving was applied in the summer of 2002. This project is believed to be the first time an entire suspended structure has been replaced while traffic continued to use the bridge each day. The result is a wider, safer, more durable suspended structure that blends seamlessly with the aesthetics of the remaining original portions of the bridge.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.190
Threshold uncertainty score0.377

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.000
Science and technology studies0.0010.001
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0070.001

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.

Opus teacher head0.016
GPT teacher head0.221
Teacher spread0.204 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2009
Admission routes1
Has abstractyes

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Same venue2009 ANNUAL CONFERENCE AND EXHIBITION OF THE TRANSPORTATION ASSOCIATION OF CANADA - TRANSPORTATION IN A CLIMATE OF CHANGESame topicStructural Engineering and Vibration AnalysisFrench-language works237,207