基于提升小波熵指标的梁板组合桥损伤识别研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (11) : 114-117.

论文

基于提升小波熵指标的梁板组合桥损伤识别研究

孙增寿1, 范科举2

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Damage detection of gird-slab combined bridge based on lifting wavelet entropy indexes

Sun zeng-shou1, fan ke-ju2

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摘要

利用提升小波和熵的特点，提出了基于提升小波熵的结构损伤识别方法，给出了提升小波时间熵和相对提升小波熵两个结构损伤指标。通过梁板组合桥的数值模拟表明，提升小波时间熵指标能较好地识别结构的损伤时刻，而相对提升小波熵指标能较好地识别结构的损伤位置。

Abstract

Taking advantage of characteristic of lifting wavelet and entropy, the structural damage identification method based on lifting wavelet entropy is proposed in this paper. And the lifting wavelet time entropy index and the relative lifting wavelet entropy index is established. The new method and damage indexs are verified in numerical simulation of gird-slab combined bridge. The analysis results show that lifting wavelet time entropy can identify structural damage moment and the relative lifting wavelet entropy can identify structural damage location.

导出引用

孙增寿; 范科举. 基于提升小波熵指标的梁板组合桥损伤识别研究[J]. 振动与冲击, 2012, 31(11): 114-117

Sun zeng-shou;fan ke-ju. Damage detection of gird-slab combined bridge based on lifting wavelet entropy indexes[J]. Journal of Vibration and Shock, 2012, 31(11): 114-117