Seismic Retrofit of Square RC Short Columns with Shear-Flexural Failure Mode via CFRP Composites Using Different Confinement Techniques
Bibliographic record
Abstract
Short columns undergo larger drift ratios during earthquakes compared to ordinary ones, making them vulnerable structural elements if they are unable to withstand the demanded drift ratio and shear force without significant deterioration. In order to ensure proper structural performance, deficient reinforced concrete (RC) short columns should be effectively retrofitted. Carbon-fiber-reinforced polymer (CFRP) composites can be utilized effectively to provide adequate shear capacity and confinement for RC short columns to have a desirable performance during an earthquake event. In this study, six RC short columns were subjected to constant axial and reversed cyclic lateral loads to compare the three different confinement techniques of full-wrapping (FW), corner strip-batten (CSB), and corner strip-wrap (CSW) in terms of their efficiency. Moreover, the effect of a novel configuration of fiber anchors was investigated in improving the behavior of such short columns. Results indicated that the performance of a typical RC short column improved significantly with the use of the CSB technique, because its ductility and dissipated energy increased by 125% and 800%, respectively. Furthermore, the application of fiber anchors was observed to further improve the overall performance of short columns confined through either the CSB or the FW techniques.
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How this classification was reachedexpand
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 | 0.000 | 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 | 0.000 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".