Evaluation of the internal blast resistance of a bi-directionally prestressed concrete tubular structure according to ANFO explosive charge weight
Why this work is in the frame
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Bibliographic record
Abstract
When an extreme internal loading is applied to prestressed concrete (PSC) structures, serious property damage and human casualties may occur. However, the existing designs for PSC structures such as prestressed concrete containment vessels (PCCVs) do not include features to protect the structure from forces such as explosive blasts. Therefore, we evaluated the internal blast-resistance of PSC structures using blast tests on bi-directionally prestressed tubular concrete members. The goal of the study was to examine structural behavior data after an internal detonation. Explosive charges (ammonium nitrate – fuel oil; ANFO) were detonated at the center of the mid-span of the concrete tube with a standoff distance of 1000 mm. The data acquired included blast pressure, deflection, strain, crack pattern, and prestressing loss. The data were used to calculate the internal blast charge weight required to cause a PCCV to fail and to calibrate a simulation program to be used commercially for internal blast simulations at real scale structure.
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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 | 0.001 |
| 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