Deformation capacity of ultra‐high strength concrete flexural elements subjected to inelastic load reversals
Bibliographic record
Abstract
SUMMARY Ductility and plastic rotational capacity of flexural elements constructed with concrete strengths up to 175 MPa were investigated experimentally. Ten exterior beam–column sub‐assemblages were tested under cyclic displacements that represented a severe seismic event. The test variables included the concrete strength, the bottom/top reinforcement ratio, the transverse reinforcement ratio, and the shear‐span‐to‐depth ratio. The increase of concrete brittleness with the higher strength concretes did not inhibit the reinforced concrete flexural elements from attaining comparable ductility and deformation capacity with respect to counterpart elements constructed with normal strength concrete. However, the maximum concrete strength that could be used in achieving highly ductile elements depended on the other test variables of the beam element including the bottom/top reinforcement ratio, the transverse reinforcement ratio in the hinge region, and the shear‐span‐to‐depth ratio. Copyright © 2010 John Wiley & Sons, Ltd.
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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 | 0.001 |
| 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".