The research on bridge damage identification using curvature mode shapes

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (8) : 77-81,9.

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The research on bridge damage identification using curvature mode shapes

Liu Yilun; Shi Sheng-peng; Liao Wei

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Abstract

In response to the problems that is encountered in the process of bridge damage identification using curvature mode shapes，a formula suitable for bridge damage identification to obtain curvature mode shapes was given; curvature mode shapes normalization was proposed,in order to obtain the amount of damage easily; curvature mode variations at the curvature zero points were calculated specially，in orderc to avoid the damage identification interference from those points;and a formula for the estimation of damage amount when sensors are dense enough was given; finally numerical simulation verified the effectiveness of this method.

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curvature mode shapes / normalization / curvature zero points / damage amount

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Liu Yilun;Shi Sheng-peng;Liao Wei. The research on bridge damage identification using curvature mode shapes[J]. Journal of Vibration and Shock, 2011, 30(8): 77-81,9