Abstract
The Foz Tua hydroelectric development is located in the north of Portugal at the mouth of the Tua river, a tributary of the Douro river, and is equipped with 270 MW of power capacity, making it a very important asset in the country’s energy production capacity. Its reservoir is accomplished through a 108 m high concrete arch dam whose construction was concluded in 2017.
The arch dam has been equipped with a vibration-based structural health monitoring system, which is composed by a set of accelerometers that were radially disposed over the two upper visit galleries. The accelerometers are connected to a set of digitizers distributed in the dam, being the synchronization of the data assured by GPS.
This paper describes the addressed monitoring system, as well as the results obtained during the first months of operation, such as the characterization of accelerations (maximum and effective values) and the automatic identification of the dam modal properties. Additionally, the influence of operational conditions on modal properties is preliminarily studied, namely the effect of reservoir water level variation on the tracked natural frequencies.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Gomes, J.P., Palma, J., Magalhães, F., Pereira, S., Monteiro, G., Silva Matos, D.: Seismic monitoring system of baixo sabor scheme for structural dynamic behaviour monitoring and risk management. In: 26th International Congress on Large Dams (2018)
Magalhães, F., Cunha, A., Caetano, E.: Vibration based structural health monitoring of an arch bridge: from automated OMA to damage detection. Mech. Syst. Sig. Process. 28, 212–228 (2012)
Oliveira, G., Magalhães, F., Cunha, Á., Caetano, E.: Development and implementation of a continuous dynamic monitoring system in a wind turbine. J. Civ. Struct. Health Monit. 6(3), 343–353 (2016)
Rainieri, C., Fabbrocino, G., Manfredi, G., Dolce, M.: Robust output-only modal identification and monitoring of buildings in the presence of dynamic interactions for rapid post-earthquake emergency management. Eng. Struct. 34, 436–446 (2012)
Martins, N., Caetano, E., Diord, S., Magalhães, F., Cunha, T.: Dynamic monitoring of a stadium suspension roof: Wind and temperature influence on modal parameters and structural response. Eng. Struct. 59, 80–94 (2014)
Ubertini, F., Comanducci, G., Cavalagli, N.: Vibration-based structural health monitoring of a historic bell-tower using output-only measurements and multivariate statistical analysis. Struct. Health Monit. 15(4), 438–457 (2016)
Gomes, J.P., Lemos, J.V.: Characterization of the dynamic behavior of a concrete arch dam by means of forced vibration tests and numerical models. Earthq. Eng. Struct. Dynam. 49(7), 679–694 (2020)
Mendes, P.: Observação e Análise do Comportamento Dinâmico de Barragens de Betão. Faculdade de Engenharia da Universidade do Porto, Portuguese (2010)
Pereira, S., Magalhães, F., Gomes, J.P., Cunha, Á., Lemos, J.V.: Dynamic monitoring of a concrete arch dam during the first filling of the reservoir. Eng. Struct. 174, 548–560 (2018)
Gomes, J., Pereira, S., Magalhães, F., Lemos, J.V., Cunha, Á.: Input-Output vs Output-only modal identification of Baixo Sabor concrete arch dam. In: 9th European Workshop on Structural Health Monitoring, Manchester, United Kingdom (2018)
EDP. Energias de Portugal (2018). https://www.a-nossa-energia.edp.pt/centros_produtores/
Pereira, S., Reynders, E., Magalhães, F., Cunha, Á., Gomes, J.P.: The role of modal parameters uncertainty estimation in automated modal identification, modal tracking and data normalization. Eng. Struct. 224, 111208 (2020)
Magalhães, F., Cunha, A., Caetano, E.: Online automatic identification of the modal parameters of a long span arch bridge. Mech. Syst. Sig. Process. 23(2), 316–329 (2009)
Acknowledgments
This work was financially supported by: Base Funding - UIDB/04708/2020 of the CONSTRUCT - Instituto de I&D em Estruturas e Construções - funded by national funds through the FCT/MCTES (PIDDAC); PTDC/ECM-EST/0805/2014|16761 – DAM_AGE - Advanced Online Dynamic Structural Health Monitoring of Concrete Dams, funded by FEDER funds through COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI) – and by national funds through FCT - Fundação para a Ciência e a Tecnologia. The authors would like also to acknowledge all the collaboration and support provided by EDP Produção.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 Springer Nature Switzerland AG
About this paper
Cite this paper
Pereira, S., Magalhães, F., Gomes, J., Cunha, Á., Paixão, J., Lemos, J. (2021). Continuous Dynamic Monitoring System of Foz Tua Arch Dam: Installation and First Results. In: Rizzo, P., Milazzo, A. (eds) European Workshop on Structural Health Monitoring. EWSHM 2020. Lecture Notes in Civil Engineering, vol 127. Springer, Cham. https://doi.org/10.1007/978-3-030-64594-6_32
Download citation
DOI: https://doi.org/10.1007/978-3-030-64594-6_32
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-64593-9
Online ISBN: 978-3-030-64594-6
eBook Packages: EngineeringEngineering (R0)