APPLICTION OF INSPECTION QUALITY ON INSPECTION SCHEDULING FOR STEEL BRIDGES
碩士 === 國立成功大學 === 土木工程學系碩博士班 === 94 === A method for selecting an optimal NDI (non-destructive inspection) technique and associate schedule for fracture-critical member inspections on a specific steel bridge is presented Information related to the probability of detection (POD) function of alternati...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/31627381368592844058 |
| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 94 === A method for selecting an optimal NDI (non-destructive inspection) technique and associate schedule for fracture-critical member inspections on a specific steel bridge is presented Information related to the probability of detection (POD) function of alternative NDI techniques is utilized as a measure of inspection quality. Calculations based on use of the POD function together with Monte Carlo simulations of crack propagation in the detail of interest are performed. A cost function is formulated that includes inspection costs as well as possible failure costs with each candidate NDI technique and alternative inspection schedule. The selection of an NDI technique together with an associated schedule for fracture-critical inspections is thus formulated as an optimization problem that can guarantee minimum total cost. An optimal inspection frequency is sough as part of the optimization which utilizes appropriate constraints on inspection intervals and a minimum acceptable (target) structural safety level. A case study involving a box girder bridge is presented to illustrate the proposed probabilistic method.
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