Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction Project Safety Risk Analysis Based on the Fuzzy Fault Tree and Binary Decision Diagram
Construction safety risk analysis can provide the necessary insights for accident prevention. The fault tree analysis (FTA), as a conventional risk assessment tool, has gained widespread acceptance among practitioners in various industries. However, the analysis process, especially in construction settings, entails several difficulties owing to the constraint of sufficient data. To give a reliable approximation, the linguistic assessment and expert confidence index method are employed to convert the imprecise probability of occurrence of basic events into triangular fuzzy numbers. Owning to a large number of basic elements contributing to system failure in construction setting, the binary decision diagram (BDD), as a symbolic approach, is employed to overcome limitations of the algorithms based on the FTA in terms of both accuracy and efficiency. In the paper, the fuzzy Boolean algebras are utilized to determine the probability of the top event and the fuzzy importance measure (FIM) of the basic event. The approach proposed was verified using a scaffolding collapse case as an illustration. The paper offers some advantages of allowing to linguistic assessment for risk events, and also efficiently treating the risk analysis with the BDD method. The approach proposed can further construction safety practices as a fuzzy decision tool.
Construction Project Safety Risk Analysis Based on the Fuzzy Fault Tree and Binary Decision Diagram
Construction safety risk analysis can provide the necessary insights for accident prevention. The fault tree analysis (FTA), as a conventional risk assessment tool, has gained widespread acceptance among practitioners in various industries. However, the analysis process, especially in construction settings, entails several difficulties owing to the constraint of sufficient data. To give a reliable approximation, the linguistic assessment and expert confidence index method are employed to convert the imprecise probability of occurrence of basic events into triangular fuzzy numbers. Owning to a large number of basic elements contributing to system failure in construction setting, the binary decision diagram (BDD), as a symbolic approach, is employed to overcome limitations of the algorithms based on the FTA in terms of both accuracy and efficiency. In the paper, the fuzzy Boolean algebras are utilized to determine the probability of the top event and the fuzzy importance measure (FIM) of the basic event. The approach proposed was verified using a scaffolding collapse case as an illustration. The paper offers some advantages of allowing to linguistic assessment for risk events, and also efficiently treating the risk analysis with the BDD method. The approach proposed can further construction safety practices as a fuzzy decision tool.
Construction Project Safety Risk Analysis Based on the Fuzzy Fault Tree and Binary Decision Diagram
Liang, Huakang (Autor:in) / Zhang, Shoujian (Autor:in)
International Conference on Construction and Real Estate Management 2016 ; 2016 ; Edmonton, Canada
ICCREM 2016 ; 1326-1337
14.08.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Binary Decision Diagrams Applied to Fault Tree Analysis
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