Shear strength model for reinforced concrete beams with web reinforcement
Bibliographic record
Abstract
The modified compression field theory (MCFT), developed in the 1980s, is capable of predicting the shear behaviour of reinforced concrete (RC) and forms the basis of shear provisions in Canadian and American specifications for the design of concrete structures. In the MCFT method, shear is considered to be resisted by cracked concrete and web reinforcement. However, previous studies have shown that a significant portion of the shear is carried by the compression zone. This paper describes further studies on the MCFT to predict shear capacity while taking account of the contribution of concrete in compression. In the proposed model, the shear strength of RC beams is defined as the sum of contributions of concrete in the compression zone, cracked concrete below the neutral axis and shear reinforcement. The results predicted by the proposed model are compared with data from beam experiments in the literature. The shear strengths predicted by the proposed method are in good agreement with the test results, implying that the method can be used to predict shear capacity for RC beams.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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".