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- W2347368542 abstract "Owing to the factors of load or environment,the actual conditions of an in-service concrete-filled steel tube(CFST) arch bridge can be different from the conditions of the bridge that is newly built.In the light of the principal load-carrying part,the CFST arch rib of the bridge,an updating method for the calculation model of the arch rib based on the conjugate gradient method and spatial curvature mode difference is proposed and the effectiveness of the method is verified through updating of a model of a single round tube CFST arch rib.The results reveal that the updating efficiency of the objective function based on the curvature mode and natural frequency has increased 1 time as compared to that of the objective function only based on the curvature mode.The updating precision of the objective function using the first 2 orders of the mode is obviously higher than that of the objective function using only 1 order of the mode.The more the damaged areas are,the obvious the situation will be,the lower the updating precision will be and more orders of the mode will be required.The updating method herewith can be not only used for the model updating,but also for the damaged area identification and diagnosis." @default.
- W2347368542 created "2016-06-24" @default.
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- W2347368542 date "2010-01-01" @default.
- W2347368542 modified "2023-09-23" @default.
- W2347368542 title "Resrach of a Model Updating Method for Arch Rib of CFST Arch Bridge" @default.
- W2347368542 hasPublicationYear "2010" @default.
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