Finite-Element Bond-Slip Model for Concrete Columns under Cyclic Loads
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Bibliographic record
Abstract
The hysteretic behavior of reinforced concrete structures depends in large measure on the transfer mechanism between reinforcing steel and concrete through bond and the resulting slip. This paper presents a finite-element model developed to investigate the response of reinforced concrete columns subjected to cyclic loading, considering in an explicit way the relative displacement at the interface. The novel aspect of the model is its capability of modeling three-dimensional effects as concrete confinement, the softening response of concrete, and to take into account the gradual deterioration of the bond between reinforcing bars and concrete. Numerical results are compared to experimental results on rectangular bridge columns with lapped starter bars subjected to cyclic loading. The numerical model reproduces the physical phenomena observed experimentally, as the gradual stress transfer from one bar to the other. The numerical results show the effect of damage in concrete on the steel stress distribution, as long as the coupled effect of damage in concrete and bond-slip constitutive law on the general behavior of the structural element.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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)
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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