Triple-actuator apparatus for strength experiments of cold-formed steel members in combined loadings
Bibliographic record
Abstract
Cold-formed steel members are likely to undergo complex combinations of loadings such as bending, shear, and compression. In the literature, numerous test rigs have been developed to test members subject to both isolated and combined actions. These apparatuses are commonly employed for testing combined two actions, such as shear-bending and bending-compression. However, as of today, there is no test rig specifically designed for more complex combined actions including compression, bending and shear. This paper introduces an innovative experimental apparatus namely a “Triple-Actuator Test Rig”, recently developed at the University of Sydney, with a focus on investigating the ultimate behaviour of cold-formed steel channel sections subjected to combined actions of shear, bending and compression. The combined shear and bending is conducted by using two vertical dual actuators, and the axial compression force is applied using an additional horizontal actuator. To elucidate the mechanism of the new apparatus in capturing various combinations of actions, linear static analyses are performed under different cases of combined loadings. Furthermore, detailed information on test controls and procedures is provided. An experimental validation is also conducted to demonstrate the performance of the test rig in investigating not only pure actions but also complex combinations of actions. • An innovative apparatus for testing cold-formed steel structures subject to combined complex actions is introduced. • Triple-Actual test tig is designed to test cold-formed sections under combined actions of shear, bending and compression. • Linear static analyses are performed under different cases of combined loadings for the triple-actuator apparatus. • Detailed information on test controls and procedures of the triple-actuator appartus is provided. • An experimental validation is conducted to demonstrate the performance of the triple-actuator test rig.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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 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".