[1] WANG Zhiming, WU Jizhong,. Determining the natural vibration period of towering structure using GNSS precise point positioning [J]. Journal of Southeast University (English Edition), 2025, 41 (2): 199-206. [doi:10.3969/j.issn.1003-7985.2025.02.009]

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Determining the natural vibration period of towering structure using GNSS precise point positioning()

利用GNSS精密单点定位技术测定高耸结构的自振周期

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

41

Issue:

2025 2

Page:

199-206

Research Field:

Civil Engineering

Publishing date:

2025-06-17

Info

Title:

Determining the natural vibration period of towering structure using GNSS precise point positioning

利用GNSS精密单点定位技术测定高耸结构的自振周期

Author(s):

WANG Zhiming¹, WU Jizhong²

1.Architectural Design and Research Institute Co., Ltd., Southeast University, Nanjing 210096, China
2.School of Geomatics Science and Technology, Nanjing Tech University, Nanjing 211816, China

王志明¹, 吴继忠²

1.东南大学建筑设计研究院有限公司，南京 210096
2.南京工业大学测绘科学与技术学院，南京 211816

Keywords:

towering structure;  natural vibration period;  precise point positioning;  frequency domain decomposition

高耸结构; 自振周期; 精密单点定位; 频域分解

PACS:

TU973.3

DOI:

10.3969/j.issn.1003-7985.2025.02.009

Abstract:

This study explores the use of the Global Navigation Satellite System (GNSS) precise point positioning (PPP) technology to determine the natural vibration periods of towering structures through simulations and field testing. During the simulation phase, a GNSS receiver captured vibration waveforms generated by a single-axis motion simulator based on preset signal parameters, analyzing how different satellite system configurations affect the efficiency of extracting vibration parameters. Subsequently, field tests were conducted on a high-rise steel single-tube tower. The results indicate that in the simulation environment, no matter the PPP positioning data under single GPS or multisystem combination, the vibration frequency of single-axis motion simulator can be accurately extracted after frequency domain analysis, with multisystem setups providing more precise amplitude parameters. In the field test, the natural vibration periods of the main vibration modes of high-rise steel single-tube tower measured by PPP technology closely match the results of the first two modes derived from finite element analysis. The first mode period calculated by the empirical formula is approximately 6% higher than those determined through finite element analysis and PPP. This study demonstrates the potential of PPP for structural vibration analysis, offering significant benefits for assessing dynamic responses and monitoring the health of towering structures.

为验证GNSS精密单点定位（PPP）技术测定高耸结构自振周期的可行性，设计并实施了模拟实验与现场实测。在模拟实验阶段，采用GNSS接收机捕获由单向振动台实验系统依据预设参数产生的振动波形，评估了不同卫星系统配置对振动参数提取的效能影响，随后对高耸钢结构单管塔进行了实地测试。结果表明，在模拟环境中，无论是单一GPS系统还是多系统组合下的PPP定位数据，经频域分析后均能精确提取单向振动台的振动频率，但多系统组合方案可以获取精度更高的振幅参数。在实地测试环节，采用PPP技术测定的钢结构圆管单管塔主要振动模态的自振周期与有限元分析前2阶模态的结果吻合较好，经验公式计算的第一阶模态周期比前2种方法高出约6%，证实了PPP是一种可行的结构振动分析工具，对高耸结构的动态响应评估和健康监测具有重要意义。

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Memo

Memo:

Received 2024-10-21,Revised 2024-12-10.
Biographies:Wang Zhiming (1970—), male, doctor, senior engineer, wangzhiming@adriseu.com;Wu Jizhong(corresponding author), male, doctor, associate professor, jzwu@njtech.edu.cn.
Foundation item:The National Natural Science Foundation of China (No.41974214).
Citation:WANG Zhiming,WU Jizhong.Determining the natural vibration period of towering structure using GNSS precise point positioning[J].Journal of Southeast University (English Edition),2025,41(2):199-206.DOI:10.3969/j.issn.1003-7985.2025.02.009.DOI:10.3969/j.issn.1003-7985.2025.02.009

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