Contact explosion response of RC columns: experimental and numerical investigation
Why this work is in the frame
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Bibliographic record
Abstract
There is limited experimental test data available on the response of concrete columns subjected to contact explosions. Columns are the most vulnerable and critical member in any structure and are at risk of contact explosion attacks using small quantities of explosives. A benchmark study for the response of full-scale reinforced concrete (RC) columns subjected to live contact explosions of varying charge mass is presented in this paper. Quantitative and qualitative assessments of damage profiles and the residual axial load capacity of the columns are presented. The experimental data were used to establish a set of validated numerical LS-Dyna models that were used for parametric studies to establish the influence of various design parameters on the response. The results of the parametric studies showed that the demolition charge mass for an RC column is considerably lower than the breaching charge mass for an RC slab of the same depth and material properties. Concrete strength was found to have a limited influence on the residual axial capacity of blast-damaged columns.
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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) | 0.000 | 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 it