Strengthening of Concrete-Filled Double Skinned Circular Steel Tubular (CFDSCT) Column: A Review Study
Why this work is in the frame
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Bibliographic record
Abstract
Due to its beneficial characteristics, such as its high load carrying capacity, good seismic resistance, fire resistance, high ductility, and quick construction, a concrete filled double skinned steel circular tubular (CFDSCT) column is a structural member that is frequently used in high-rise buildings.Many studies have proved that the factors controlling the bearing capacity of this type of column are column diameter-to-tube thickness (D/t), column length-to-diameter (L/D), central void ratio (χ), the yield of steel tubes (fy), and concrete strength (fc).In this study, the enhancement of the load-bearing capacity of the CFDST column was highlighted by adding some external details and changes to its structure.These external details and changes gave the structure more confinement and improved contact zoon between concrete and tubes.The differences between the previous test results were significant; a good additional improvement in compressive strength and bond strength reached 51% and 225%, respectively, higher than the conventional CFDSCT.This improvement was achieved by some changes in the outer tube structure or by using external details on the outer and inner tubes.This review also showed how the load-bearing capacity of the CFDSCT column could be improved if the best results from the above factors were added to the CFDSCT results.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.004 | 0.001 |
| Bibliometrics | 0.000 | 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