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论文类型：会议论文

发表时间：2015-09-26

收录刊物：EI、Scopus

卷号：5

页面范围：264-269

摘要：This paper proposes a test method for damage diagnosis of arch bridge hangers. The acceleration response of every hanger under pulse excitation before and after damage is collected and used to extract the damage feature in time domain directly. Then the damage feature waveform before and after damage is obtained respectively by connecting these damage feature values of all measured hangers one by one. Finally the mean value of normalized curvature difference of damage feature waveforms before and after damage is considered as the damage index to diagnose the hangers. The proposed method has a high sensitivity to small damage and the damage sensitivity has no obvious change to hangers with different lengths; moreover, the proposed method doesn't require the finite element model of the arch bridge. All of these lay a good foundation for damage diagnosis of arch bridge hangers. ? JVE International Ltd.