A Risk-Based Structural Assessment Approach for Port Metro Vancouver’s Asset Management
Why this work is in the frame
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Bibliographic record
Abstract
This paper presents a risk-based structural assessment methodology used in conjunction with a life cycle cost analysis to assist Port Metro Vancouver develop a multi-year works program with funding needs for maintaining the reliability of its assets. The risk measure is based on the probability of structural failure and the monetary consequence of failure, and accounts for the deterioration of material over time. For steel, the corrosion rate was used as the measure of deterioration. For reinforced concrete, material modelling estimated the rate of degradation, the onset and the progression of rebar corrosion over time. The failure probabilities were estimated first by assuming that no repair or rehabilitation is performed. Then various scenarios of preventative risk mitigation measures were considered, and their associated costs were used in the life cycle cost analysis to develop strategies for asset management. An example of the completed projects, the merits, and the limitations of this approach are presented.
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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 | 0.001 | 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) | 0.001 | 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