桥梁健康监测技术发展现状及趋势分析  

The Current Development Situation and Trend of Monitoring Technology for Bridge Health

作　　者：魏新良[1] 王震洪 

机构地区：[1]新疆交通职业技术学院,乌鲁木齐831401 [2]新疆交通建设局,乌鲁木齐831401

出　　处：《铁道工程学报》2008年第9期44-47,共4页Journal of Railway Engineering Society

摘　　要：研究目的:通过对桥梁健康监测技术涉及到的模型修正、指纹、动力等不同的状态评估方法的归纳,对桥梁健康监测技术现状进行了综合分析,并对健康监测技术的发展趋势进行预测。研究结果:桥梁健康监测与状态评估系统的研究尚处于基础性的探索阶段,距离实用性的系统目标尚有很大的差距。目前仅能准确测量低频响应,而低频响应多为结构的整体模态,对整体响应贡献小的局部,即使在整体模态中有所反映,但由于量值过小,往往也容易淹没在噪声、误差和不确定因素引起的扰动之中。今后桥梁健康监测的发展方向一是降低噪声和不确定性因素的影响,二是提高桥梁损伤诊断方法的灵敏度,通过技术优化可以达到对损伤程度的量化。Research purposes： Through making summary on the evaluation methods for the different status of model modification, fingerprint and dynamics involved in the monitoring technology for bridge health, the comprehensive analysis of the current development situation of monitoring technology for bridge health is made and its development trend is predicted. Research results：The research on the bridge health monitoring and evaluation system is at the beginning stage and it has long way to go to put the system into practice. Nowadays only the response of low frequency can be measured precisely and only can reflect the entire status of the structure. However, even such response can be reflected in the entire status, but it is easily disturbed by the noise, error and unstable factors because the measured value is too small. The development trend of monitoring technology for bridge health is as follows： The first is to reduce the noise and unstable factors and the second is to enhance the sensitivity of diagnostic method of bridge damage to realize the quantization of the bridge damage through optimizing the technology.

关 键 词：状态评估 损伤 监测 趋势 

分 类 号：U446[建筑科学—桥梁与隧道工程]