コンクリート橋の安全性評価と寿命予測(<小特集>信頼性工学)

概要

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It is a important problem for maintenance and rehabilitation of existing bridges to develop a method of evaluating safety such as remaining life and load carrying capacity of bridges. This paper describe samethod of safetyevaluation of concrete bridges inservice together with veriation of the evaluated results based on foeld tests. The field tests were performed under static loading by test trucks for application to the System Identincation Method, and also under dyrlamic loading by falling mass for application the Modal Analysis. The safety factors for flexural and shear failures were evaluated from the field tests. These results were verifiled through the ultimate load test carried out in field on there in forced concrete maingirders isolated by cutting off from the bridge system. Finally, remaining life of the bridge was predicted by application of fuzzy set theory which deal with the subjective information of bridge engineers.
社団法人日本材料学会の論文
1991-03-15