Lateral–Torsional and Distortional Buckling of I-Shaped Welded Steel Girders
Bibliographic record
Abstract
This paper presents the experimental testing and numerical simulations of four full-scale I-shaped welded steel girders to examine their lateral–torsional buckling (LTB) and lateral–distortional buckling (LDB) behaviors and evaluate the adequacy of the associated provisions in North American steel design standards. The test specimens and setup are first presented, followed by the experimental test results used to assess the inelastic LTB and LDB behaviors. A corroborated finite-element model is then used to further evaluate the influences of web distortion on the flexural response of the girders and to assess the adequacy of the design provisions when applied to girders with web depth-to-thickness ratios close to the Class 2/3, or compact/noncompact boundary (i.e., h/w≈90). The results show that LDB, in combination with inelastic LTB, influences the flexural response and resistance of welded steel girders with webs of this slenderness. Furthermore, the North American steel design provisions may overestimate the flexural moment resistance of such girders.
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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) | 0.000 | 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) | 0.000 | 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".