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The Research of Assessing and Strengthening One 40 Years Old Girder Arch Bridge

By investigating and examining one 40 years old girder arch bridge, this paper gets the current situation of the bridge. On account of these data, the reliability analysis and safety evaluation have been done, the reliability index was calculated, the dynamic reliability of the bridge was analyzed, and the disciplinarian of bearing capacity change with the deck pavement thickness and vehicle load level increasing was discuss. Moreover, the treatment project and strengthening measures was put forward.