Modeling of Reinforcement Buckling in RC Columns Confined with FRP
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Bibliographic record
Abstract
A model of the buckling behavior of the longitudinal reinforcement in RC columns confined with fiber reinforced polymers (FRP) is proposed. The model includes three significant aspects: (i) the model takes into account the flexural stiffness of cracked cover concrete jacketed with FRP to estimate the buckling length and critical stress; (ii) the asymptotic compressive stress of the buckled longitudinal bars under a cyclic load is modified considering the restraining effect of the FRP; and (iii) it is assumed that at least one of the lateral reinforcing bars (made of mild steel) yield to allow the concerned longitudinal bars to buckle. The model was implemented in the form of a two-dimensional finite element algorithm to compute the hysteric response of the RC columns. The finite element analysis conducted herein considers spalling of the cover concrete due to the buckling along the longitudinal reinforcement. The analysis compared well overall with the test results of four RC columns.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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