摘要
阐述一种基于多普勒效应的激光多普勒远程测试仪的工作原理、硬件组成和使用方法。应用该设备对运营高速铁路32 m简支梁和大跨度连续梁挠度进行了现场测试。应用结果表明,使用该设备操作简便,测试精度高,能够满足工程测量精度要求。测试系统适用性强,可以测试跨越江河、峡谷或铁路的桥梁挠度;响应频率范围宽,能够完成高速铁路桥梁不同梁型、不同跨度,不同列车运行速度下的挠度测试。
The working principle,hardware components and test method of the remote laser doppler tester based on doppler effect were discussed in this paper. The deflections of 32 msimply supported girder and large span girder of high speed railway were tested by the device on site. The results showthat the device is easy to operate. The test results have high precision and meet the engineering measurement requirement. The test systemhas strong applicability. It can measure the deflection of bridge across rivers,valleys and railways. The systemhas a wide frequency response range. It can measure the bridge deflection of all kinds of girder types,spans and trains moving at various speeds.
出处
《铁道建筑》
北大核心
2016年第7期42-44,共3页
Railway Engineering
关键词
激光
多普勒
铁路桥梁
挠度
Laser
Doppler
Railway bridge
Deflection
