Calculating Local Force of Corrugated Steel Culvert Buried at Shallow Cover Depth Using a Thrust Modification Factor
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Bibliographic record
Abstract
Current practice only considers the net (average) thrust for in-service engineering assessment of buried corrugated steel culverts (CSCs). In this study, numerical simulations have demonstrated, for shallow cover depth conditions (H/D < 2), the importance of local peak thrust and combined load effects (i.e., thrust and moment), which occur between the CSC shoulder and crown locations. These observations are supported by independent, third-party, full-scale, physical modeling studies. A global sensitivity analysis was conducted to identify the influential variables, assess the significance of any interaction, and estimate the influence on the predicted response. Based on this analysis, a limit state function for combined load effects and modification factor to account for the local peak thrust force was developed. The reliability index for the proposed coefficients was also established.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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 | 0.001 |
| 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