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- W2379422601 abstract "The dynamic characteristics of RC damaged beams strengthened by prestressed CFRP sheets were studied theoretically and the relation between eigen frequency and pretension was derived.Moreover,the dynamic characteristics were also tested with the primary eigen frequency measured under different pretensions.The finite element model of concrete beam in good condition was set up by use of ANSYS software,and the reduction factor of elastic modulus of concrete was obtained taking advantage of the optimization tool of ANSYS based on the test data of damaged beam.According to the value of primary eigen frequency of beam strengthened by prestressed CFRP sheets in good condion,a linear fit to the formula of calculating the frequency was carried out and the frequency factor as well as the formula for calculating primary eigen frequency of damaged beam were put forward.The theoretical value of primary eigen frequency was compared with the experimental values.At low prestress,the theoretical calculation results reflect the trend of experimental data;both results are in good agreement." @default.
- W2379422601 created "2016-06-24" @default.
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- W2379422601 date "2011-01-01" @default.
- W2379422601 modified "2023-09-26" @default.
- W2379422601 title "Study on dynamic characteristics of damaged RC beam strengthened by prestressed CFRP sheets" @default.
- W2379422601 hasPublicationYear "2011" @default.
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