【摘要】 为研究高速铁路沿线桥梁在高速列车激励下的振动规律,以及桥梁系统对地震响应的放大效应,基于Lab-VIEW2010开发了一套集信号采集、文件管理、信号时域分析、频域分析和模态分析为一体的高速铁路桥梁振动测试系统。介绍了系统软、硬件的各种功能和开发过程,特别是在功率谱编程中引入了Bartlett改进方法。经实验验证,该系统具有较高的精度,并能很好地实现各设计功能。更多还原

【Abstract】 A multi-channel system including signal acquisition,file management,time-domain analysis,frequency-domain analysis and spectral analysis was developed for researching the vibration rule and the amplification effect of the bridge along high-speed railway based on LabVIEW2010.The functions and the development process of software and hardware of the system were described,and improved-Bartlett method was introduced to power spectrum programming.The results of test show that the proposed system can achieve different design functions with high accuracy.更多还原