Improved Ductility Design of Bolted Double-Angle Shear Connections
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Bibliographic record
Abstract
Structural steel simple shear connections must satisfy strength requirements while providing adequate ductility. Although strength design has established limit states, providing adequate rotational ductility within a shear connection is less rigorous. Neglecting to provide adequate ductility can potentially cause premature sudden failure and, consequently, an unsafe connection. In this paper, an improved rotational ductility design formula based on the current approach outlined in 2011 by the American Institute of Steel Construction (AISC) is developed. In this modified approach, additional design parameters for bolt pitch and tensile strength are included. The ductility design is formulated for determining maximum framing-angle thickness and minimum bolt-diameter requirements. The proposed design approach is discussed and compared with the current design approach of the AISC.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| 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