Risk-based bridge management: optimization and inspection scheduling

Autor:	Mark A. Cesare, C. J. Turkstra, J. C. Santamarina, Erik H. Vanmarcke
Rok vydání:	1994
Předmět:	Risk analysis Engineering Schedule business.industry Markov process Time horizon Markov model Bridge (interpersonal) Reliability engineering Scheduling (computing) symbols.namesake symbols business Reliability (statistics) General Environmental Science Civil and Structural Engineering
Zdroj:	Canadian Journal of Civil Engineering. 21:897-902
ISSN:	1208-6029 0315-1468
DOI:	10.1139/l94-095
Popis:	Bridge management based on reliability methods permits the selection of the set of repair projects that minimizes the total network risk in a planning horizon. This approach, previously proposed by the authors, uses the Markovian model for the decay of structural components, evaluates the overall reliability of the bridge as a system, and computes risk by taking into consideration the consequences of reduced function. This paper presents important additional aspects of risk-based bridge management. First, genetic algorithms are proposed as an alternative optimization strategy; small and large bridge networks are solved, guiding the solution towards minimum risk. Second, Markovian transition matrices for deterioration and post-inspection Bayesian updating are combined to schedule inspections so that the overall reliability of the bridge network is maximized for a given inspection budget. Results from a simulation study using a real bridge network are presented and compared with current inspection practice. Key words: bridge management, reliability, risk assessment, optimization, inspection scheduling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::38e2f31476980dae8ca213a2a792928a https://doi.org/10.1139/l94-095 Zobrazit plný text záznamu