桥梁拉索损伤声发射监测研究进展.pdf

第 35 卷 第4 期 Vol. 35, No.4 2016 年 7 月 Journal of Applied Acoustics July, 2016 ⋄ 综合报道⋄ 桥梁拉索损伤声发射监测研究进展 钱 骥 孙利民 蒋 永 (1 重庆交通大学山区桥梁与隧道工程国家重点实验室培育基地 重庆 400074) (2 同济大学土木工程防灾国家重点实验室 上海 200092) 摘要 大量索承体系桥梁即将达到20–30 年的拉索寿命期，开展有效的拉索损伤监测方法研究有利于保障大 桥结构安全。本文简要论述了现有桥梁拉索损伤检测及监测方法的适用性，重点综述了近40 年来声发射技术 应用于桥梁拉索监测的研究进展，以及在腐蚀、疲劳、断丝等损伤监测方面所取得的研究成果。结合实测数据 在采集、数据处理过程中的难点及参数分析盲点，探讨了现有研究成果应用于特大桥梁拉索损伤监测仍需解 决的问题，并针对性地提出了研究思路。 关键词 声发射，拉索，损伤监测，波形反演 中图分类号: U446 文献标识码: A 文章编号: 1000-310X(2016)04-0369-08 DOI: 10.11684/j.issn.1000-310X.2016.04.013 Advances in acoustic emission technique to cables health monitoring QIAN Ji SUN Limin JIANG Yong ( State Key Laboratory Breading Base of Mountain Bridge and Tunnel Engineering, Chongqing , China) ( State Key Laboratory on Disaster Reduction of Civil Engineering, Shanghai , China) Abstract Large numbers of cable-supported bridges will soon reach their 20–30 years lifetime of cables. It is urgent to carry out research on cables damage monitoring to assure bridge security. This paper briefly discusses the serviceability of existing damage detection and monitoring methods. Especially the advances in application of acoustic emission (AE) in bridge cable monitoring are described in detail including corrosion, fatigue and wire breakage. Finally by combining with the difficult of data acquisition and analysis, the problems that need to be solved for the AE method application in actual bridge are discussed and some research ideas also are introduced. Key words Acoustic emission, C