Developing a Plastic Hinge Model for RC Beams Prone to Progressive Collapse
Bibliographic record
Abstract
The US General Service Administration (GSA) 2013 Guidelines specify the procedures and the minimum requirements for the design and evaluation of the new and existing buildings against progressive collapse due to an instantaneous removal of vertical load bearing elements (i.e., columns). The objective of this study is to assess the modeling parameters for reinforced concrete (RC) beams specified in the GSA 2013. Three types of RC buildings located in high, moderate and low seismic zones in Canada are designed according to the 2010 edition of the National Building Code of Canada. They were designed to have ductile, moderately ductile, and conventional seismic force resisting system (SFRS). In total, 27 three-dimensional finite element models are developed using ABAQUS by considering the design variables, such as span length, depth of the section, and the reinforcement ratio. Nonlinear pushdown analyses are conducted by increasing the vertical displacement at the location where the column is removed. The bending moment at the critical section of the beams is monitored throughout the analysis. Based on the analysis results, moment-rotation curve for beam for each type of the building is proposed. In addition, it is found out in the study that the detailing of the seismic design has significant effect on the progressive collapse resistance.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".