桥梁结构状态参数监测技术研究现状

桥梁的自然老化、劣化将会影响其安全与正常使用,甚至造成重大的人员伤亡和财产损失,已成为交通运输部门关注的问题。为了有效维护桥梁和确保其安全运行,监测桥梁结构的关键状态参数对于全面及时反映桥梁工作状态和进一步开展安全性评估极为重要。综述了桥梁结构的应变、挠度、振动等关键状态参数监测技术的研究进展,并分析了这些监测技术的基本原理、性能、应用范围,同时,对未来桥梁结构状态参数监测的发展提出了建议。

State of arts on state parameter monitoring of bridge structures

During the last several decades, the deterioration and damage of bridge structures, which will most likely result in the loss of property or human life, have become a major problem facing the national ministry of transportation and roadway. In order to effectively maintain bridge structures and discover the insecurity factors in time, monitoring the key state parameters in bridge structure and diagnosing the damage are very important.Present technologies of internal strain, deflection, vibration parameters monitoring of bridge structure are reviewed. The sensing principle, characteristics and application for different monitoring methods are analyzed. Some suggestions of monitoring the key state parameters in bridge structure are proposed.