Reliability-based inspection of post-tensioned concrete slabs
| Autor: | M. D. Pandey, M. A. Nessim |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Engineering
business.industry Bayesian probability Sample (statistics) Structural engineering Corrosion law.invention Bayes' theorem Prestressed concrete law Sample size determination Forensic engineering Probability distribution business Reliability (statistics) General Environmental Science Civil and Structural Engineering |
| Zdroj: | Canadian Journal of Civil Engineering. 23:242-249 |
| ISSN: | 1208-6029 0315-1468 |
| DOI: | 10.1139/l96-025 |
| Popis: | In unbonded, post-tensioned prestressed concrete slabs and beams, corrosion of prestressed tendons due to moisture ingress and their subsequent breakage has been identified as a major problem raising serious concern over the safety of aged structures. The paper presents a practical Bayesian approach to reliability assessment of such structures based on the inspection of a randomly selected sample of prestressing tendons. To minimize inspection costs, clear guidelines are presented for selecting the minimum sample size necessary to demonstrate that the annual probability of failure of an existing structure is below the target value of 10−5, implied in the Canadian Standards Association concrete design code CAN3-A23.3-M84. A systematic and cost-effective incremental strategy is developed for inspection of existing prestressed concrete structures. Key words: reliability, Bayes theorem, prestressed concrete, unbonded post-tensioned system, inspection, corrosion, probability distribution, CSA Standard CAN3-A23.3-M84, slab. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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