| 基于RTK-GPS技术的高索塔振动试验与分析 |
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| 引用本文： | 许昌,岳东杰.基于RTK-GPS技术的高索塔振动试验与分析[J].振动与冲击,2010,29(3):134. |
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| 作者姓名： | 许昌 岳东杰 |
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| 作者单位： | 1.浙江水利水电专科学校水利工程系 杭州310018; 2.河海大学土木工程学院 南京210098 |
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| 基金项目： | 水文水资源与水利工程科学国家重点实验室开放研究基金，海岸灾害及防护教育部重点实验室开放研究基金 |
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| 摘 要： | 随着全球定位系统(GPS)技术的不断成熟，这一实时、高动态、高精度的观测手段已逐步应用于大型桥梁的健康监测中。以某一斜拉桥高索塔为背景，建立基于RTK-GPS技术的高索塔监测系统。介绍接收机和监测点位的布设以及监测坐标系的建立。针对监测过程中所受到各类误差影响源的干扰特别是GPS多路径、环境温度变化和风荷载等低频噪声，主要采用小波多尺度分析法，对这些低频噪声和振动信号进行有效分离。通过频谱分析获取该高索塔自立状态下的自振主频，与有限元分析的结果吻合。
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| 关 键 词： | RTK-GPS 高索塔 小波多尺度分析 频谱分析 自振频率 |
| 收稿时间： | 2009-1-19 |
| 修稿时间： | 2009-5-15 |
Ambient vibration test of high pylon based on RTK-GPS technology |
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| XU Chang,YUE Dong-jie.Ambient vibration test of high pylon based on RTK-GPS technology[J].Journal of Vibration and Shock,2010,29(3):134. |
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| Authors: | XU Chang YUE Dong-jie |
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| Affiliation: | 1. Zhejiang Water Conservancy and Hydropower College, Hangzhou, 310018, China;2. College of Civil Engineering, Hohai University, Nanjing, 210098, China |
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| Abstract: | The technology of real time kinematic global positioning system (RTK-GPS) has been used gradually in the health monitoring of large structures in recent years.A structure monitoring system based on the RTK-GPS technology was devised for the high pylon of a cable-stayed bridge.The GPS receiver and its deployment,and the monitoring coordinate system for such system were also described.The rough GPS observable data were processed by using the wavelet multi-resolution analysis (MRA),to eliminate some error sour... |
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| Keywords: | RTK-GPS RTK-GPS high pylon wavelet multi-resolution analysis frequency spectrum analysis natural frequency |
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