利用曲率模态识别桥梁损伤的研究

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 77-81,9.

论文

利用曲率模态识别桥梁损伤的研究

刘义伦; 时圣鹏; 廖伟

作者信息 +

The research on bridge damage identification using curvature mode shapes

Liu Yilun; Shi Sheng-peng; Liao Wei

Author information +

文章历史 +

摘要

针对在利用曲率模态识别桥梁损伤过程中遇到的一些问题，得出了适用于桥梁损伤识别的曲率振型计算公式；提出了曲率振型规范化处理方法，以便于识别结构损伤程度；对曲率零点处的变化量计算作了特殊处理，以避免此处引起的损伤识别干扰；并给出了传感器足够密集时的损伤程度估计公式，最后通过数值仿真验证了上述方法的有效性。

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.

导出引用

刘义伦;时圣鹏;廖伟. 利用曲率模态识别桥梁损伤的研究[J]. 振动与冲击, 2011, 30(8): 77-81,9

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