R8 GNSS、TCA2003和SPRINTER 200M测定动挠度的试验分析  

TEST ANALYSIS ON DETERMINING DYNAMIC DEFLECTION BY USING R8 GNSS,TCA2003 AND SPRINTER 200M

作　　者：廖中平[1,2] 华赛男[2] 刘宁[2] 王正军[2] 

机构地区：[1]道路灾变防治及交通安全教育部工程研究中心,长沙410004 [2]长沙理工大学交通运输工程学院,长沙410004

出　　处：《大地测量与地球动力学》2013年第5期116-119,共4页Journal of Geodesy and Geodynamics

基　　金：道路灾变防治及交通安全教育部工程研究中心开放基金(kfj110307);湖南省科技计划项目(2009RS3001);湖南省教育厅科研项目(11C0022);测绘科学与技术湖南省重点学科建设项目

摘　　要：为了调查常规测量技术在动力荷载试验中的检测能力,分别应用Trimble R8 GNSS/RTK、TCA2003测量机器人自动跟踪三维坐标测量和SPRINTER 200M数字水准仪视线高程法,对试验中设计的频率为0.5 Hz的毫米级欠阻尼振荡的动挠度进行同步监测;基于FFT算法,提取各类观测数据的频谱信息,结合挠度时程曲线进行对比分析。结果表明,TCA2003自动跟踪测量技术可准确测量动态变形特征;SPRINTER 200M视线高程法,可精确测定动挠度变化趋势,但只获取某一谐频;GNSS/RTK技术仅能获取某一谐频。In order to investigate the detection capability of conventional measurement techniques in the dynamic load test, Trimble R8 GNSS/RTK technology, TCA2003 automatic tracking 3D coordinates measurement and SPRINTER 200M digital leveling are applied to synchronously monitor the deflection displacement of a damped oscillation, which has a designed frequency of 0.5 Hz and mm level amplitude in this test. Based on the FFT algorithm, spectral information was independently calculated out from these observed data, this paper makes a comparative analysis combined the dynamic deflection. The results show that the TCA2003 automatic tracking measurement techniques can accurately measure and truly reflect the characteristics of the dynamic deformation; the SPRINTER 200M digital leveling can monitor the overall trend of dynamic deflection, but only get a certain harmonic frequency; and GNSS/RTK technology could only acquire a certain harmonic frequency.

关 键 词：快速傅立叶变换 挠度 动态测量 TCA2003 GNSS RTK 

分 类 号：P258[天文地球—测绘科学与技术] TP391[自动化与计算机技术—计算机应用技术]