摘要
根据弦振动原理,得出索力与自振基频的关系,并在分析振动信号频谱特征的基础上,提出修正的二次FFT数据处理方法。详细阐述了基于该方法研制成功的斜拉桥索力远程自动监测系统的软硬件结构。在宁波招宝山大桥上的实践表明该系统运行稳定可靠,具有很好的工程应用价值。
Based on the theory of String Vibration, the relationship between Cable Tension and basic frequency is derived. On the basis of analyzing the frequency spectrum character of vibration signal, the amendatory twice FFT data processing method was proposed. This paper expatiates the software and hardware structure of the remote auto--monitoring system for the Cable Tension on Cable--Stayed Bridges based on the method. The system was applied to Zhaobaoshan Bridge in Ningbo, the result shows that the system can work stably and reliably, and has a good engineering feasibility.
出处
《江苏工业学院学报》
2009年第3期19-21,共3页
Journal of Jiangsu Polytechnic University
基金
浙江省科技厅创新项目(2008C21103)
宁波市科技局创新项目(2007B10006)
