Experimental investigation on the structural performance of a reinforced cold-formed steel beam–column joint
Bibliographic record
Abstract
A reinforced beam–column joint specific to mid-rise cold-formed steel (CFS) dwellings was proposed and studied by six full-scale cyclic loading tests. Afterwards, a moment–rotation relationship prediction model and a numerical model of the joint were established. The results show that: (i) the joint has a certain bending moment transmission capacity; (ii) the joint’s moment–rotation curve has distinctive three-stage deformation characteristics, including elastic, nonlinear, and failure stages successively; the structural performance of the joint is better and more in line with the requirements of mid-rise CFS dwellings than conventional joint; (iii) the elastic buckling strength of beam flange can be taken as the elastic limit of the joint, and the ultimate bending moment of the joint is determined by elastic flexural capacity of beam section; (iv) the prediction model and the numerical model can be used to establish an overall model of mid-rise CFS dwelling with consideration of joints’ nonlinear behaviour.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 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".