Calculation and study on deck's local stress in orthotropic steel box girder of highway bridge under standard loads at home and abroad
Bibliographic record
Abstract
Concerning vehicle,wheel and vehicle axle loads suitable for deck's local stress analysis in orthotropic steel box girder of highway bridge,the differences on codes of China,America,Canada,Japan,U.K.and Europe were studied.After selecting 8 standard loads,according to wheel contact area and diffusion effect of 50mm pavement layer,pressure areas were determined.Based on the typical structure of steel box girder selected,deck's local stress was calculated under action of these loads respectively.For the load case of applying these loads at midpoint of slings,transverse stress at top and bottom of the deck and longitudinal stress at bottom of rib here was studied.For the load case of applying these loads at supporting point of slings,longitudinal stress at top and bottom of the deck here was studied.Furthermore,without pavement diffusion effect,the above stress was researched under actions of the 8 loads selected.The results show that calculated stress of deck is relatively lower under action of the grade I highway vehicle load of China,and the effects from the shape and size of pressure area are more significant.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| 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) | 0.001 | 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".