Evaluation of Cracks in a Spliced, Prestressed Concrete I-Girder Bridge
Why this work is in the frame
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Bibliographic record
Abstract
The purpose of the investigation reported in this paper was to identify the main causes of cracking that occurred in the Cross Florida Barge Canal Bridge, a three-span, continuous, spliced I-girder bridge that comprises spans of 77.7–86.9–77.7 m (255–285–225 ft) located in Citrus County, Florida. This paper briefly describes the bridge and the cracking. It then presents analytical models. Analytical results showed that the maximum vertical tensile force within a girder end zone from longitudinal prestressing strands was nearly 8% of the total prestressing force. The force was significantly higher than that prescribed by AASHTO specifications to determine the quantity of vertical reinforcement required at the ends of pretensioned members. Finally, the paper discusses some recommendations for end zone detailing. The results could help bridge designers provide better bridge detailing and further mitigate cracking in prestressed, spliced I-girders.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.007 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it