本文在基于小波包能量谱的结构损伤预警理论基础上,建立了大跨悬索桥损伤预警方法,并以润扬大桥悬索桥为例,详细研究了损伤预警指标的损伤适用性和损伤敏感性。分析结果表明,采用基于小波包能量谱的结构损伤预警指标能有效地发现大跨悬索桥桥面结构的损伤,并且不同预警指标的损伤敏感性不同。 Based on the theory of early warning of structural damage based on wavelet packet energy spectrum, a method of early warning of damage to long-span suspension bridges is established. Taking Suspension Bridge of Runyang Bridge as an example, the damage applicability and damage sensitivity of early warning indicators are studied in detail. The analysis results show that the structural damage pre-warning index based on wavelet packet energy spectrum can effectively detect the damage of bridge deck structure of long-span suspension bridges and the damage sensitivity of different pre-warning indicators is different.