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Full-Scale Multi-Dataset OMA on a 368-Meter High TV and Radio Transmission Tower

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Dynamics of Civil Structures, Volume 2 (SEM 2023)

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Abstract

The state-of-the-art OMA algorithms have been used to identify the dynamic parameters from output-only vibration data acquired in a testing campaign carried out on a remarkable 368 m high steel structure, namely, the Riga Television and Radio transmission tower. The structure is unique both in terms of the structural system and of societal relevance since it is a historical monument and a landmark for Riga, one of the capitals of the Baltic States. Two independent acquisition systems were used to measure the vibration responses of the tower at a total of 48 DOFs along its height.

Each acquisition system is constituted of two 3D vibration sensors. One of the acquisition systems is used as a reference, and the other one is a moving system. The latter was relocated to different stories and antenna, and the former remained at the same (reference) storey throughout the test. Because the two different systems were not synchronized, advanced post-processing techniques were employed to synchronize the different datasets and subsequently identify the global modal properties of the tower.

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Acknowledgments

The raw data for the publication courtesy of 100% Latvia state-owned company “Latvijas Valsts radio un televīzijas centrs” (LVRTC). The authors especially would like to thank the technicians – high climbers of LVRTC Normunds Patmalnieks and Eduards Putilins for their valuable support and assistance in the dynamic testing of the structure and Julija Batalauska for excellent organizational help. The technicians Klaus Myndal and Ian Rasmussen of the Civil and Mechanical Engineering Department (CONSTRUCT) at the Technical University of Denmark (DTU) for their assistance in the preparation and testing of the measurement system used in the multi-dataset vibration test of the Riga TV and Radio Transmission Tower.

This work has been supported by the European Regional Development Fund within the Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 “To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure” of the Operational Programme “Growth and Employment” (No.1.1.1.2/VIAA/3/19/393).

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Authors and Affiliations

  1. Institute of Structural Engineering, Riga Technical University, Riga, Latvia

    L. Gaile

  2. Department of Civil and Mechanical Engineering (CONSTRUCT), Technical University of Denmark, Copenhagen, Denmark

    S. D. R. Amador & E. Lydakis

  3. Brincker Monitoring, ApS, Copenhagen, Denmark

    R. Brincker

Authors
  1. L. Gaile
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  2. S. D. R. Amador
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  3. E. Lydakis
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  4. R. Brincker
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Correspondence to L. Gaile .

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Editors and Affiliations

  1. Stanford University, Stanford, CA, USA

    Hae Young Noh

  2. University of North Carolina at Charlotte, Charlotte, NC, USA

    Matthew Whelan

  3. University of Oklahoma, Norman, OK, USA

    P. Scott Harvey

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Gaile, L., Amador, S.D.R., Lydakis, E., Brincker, R. (2024). Full-Scale Multi-Dataset OMA on a 368-Meter High TV and Radio Transmission Tower. In: Noh, H.Y., Whelan, M., Harvey, P.S. (eds) Dynamics of Civil Structures, Volume 2. SEM 2023. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-031-36663-5_3

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  • DOI: https://doi.org/10.1007/978-3-031-36663-5_3

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