Prediction of Bolted Connection Capacity for Block Shear Failures along Atypical Paths
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Bibliographic record
Abstract
Failure modes such as bolt tear-out and the so-called alternate block shear path observed in tees are closely related to the classical block shear limit state, but they have not been addressed as such in current design specifications in North America. In previous work conducted at the University of Alberta, a unified block shear equation was proposed that provides accurate test-to-predicted block shear capacity ratios and results in consistent reliability indices over a variety of connection types. A total of 104 specimens that failed in bolt tear-out and 14 tees that failed on the alternate block shear path are considered from the literature, along with 12 new bolt tear-out tests conducted as part of this research program. It is shown that the unified block shear equation provides accurate and consistent results for these failure modes as well.
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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