Application of Fuzzy Structural Modeling Method to Hierarchy Model of Damage Factors for Steel Bridges(Journal of Japan Society for Fuzzy Theory and Systems)

概要

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There are multiple processes of damage with a lot of damage factors in existing steel bridges in service. Although it is very difficult to define such damage processes quantitatively, it can be assumed that the bridge engineers who deal with bridge repair works have their own concepts of bridge rating system in their minds based on the past engineering experience and knowledge. In this paper, it is proposed a global hierarchy model of damage factors for steel bridges based on the Fuzzy Hierarchy Structural Modeling Method. Since the knowledge about damage factors was picked out through a questionnaire to a few experts, the subjective uncertainty was included in the results. In order to deal with such uncertainty, the concepts of basic probability according to the Dempster & Shafer theory were applied. The final hierarchy model was selected from among several models on the simple viewpoint and available literature. This hierarchy model can be effectively utilized into the bridge rating system.
日本知能情報ファジィ学会の論文
1991-11-15