Steel Reinforced Polymers Enhance Strength and Ductility of Beam-Column Joints under Seismic Loads
Bibliographic record
Abstract
The results of an experimental investigation into the application of steel-reinforced polymer (SRP) composites for strengthening shear-deficient exterior beam-column joints in reinforced concrete frames subjected to seismic loads are presented. Four frac12;-scale beam-column joint specimens were tested under a quasi-static cyclic load applied at the beam tip to simulate high levels of inelastic deformations similar to those experienced during a severe earthquake. The first specimen was tested without strengthening and used as control specimen for comparison purposes. The remaining three specimens were strengthened before testing using SRP sheets bonded externally to the joint region in three different arrangements. The SRP sheets selected for this investigation consist of unidirectional twisted high strength steel cords impregnated with polymeric resin. The strengthening technique proved to be efficient in upgrading the capacity and enhancing the ductility and energy dissipation ability of shear-deficient beam-column joints.
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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 | 0.000 |
| 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 | 0.000 |
| 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".