Some advances in extensive bridge monitoring using low cost dynamic characterization

García-Palacios, Jaime H. and Samartín, Avelino and Ortega, Roberto and Tirado, Francisco and Araujo, Alvaro and Nieto-Taladriz García, Octavio and Blesa Martínez, Javier and Romero Perales, Elena and Reynders, Edwin and De Roeck, Guido and He, Leqia (2011). Some advances in extensive bridge monitoring using low cost dynamic characterization. In: "Experimental Vibration Analysis for Civil Engineering Structures", 03/10/2011 - 05/10/2011, Varenna, Italy. ISBN 978-88-96225-39-4. pp. 417-424.

Description

Title: Some advances in extensive bridge monitoring using low cost dynamic characterization
Author/s:
  • García-Palacios, Jaime H.
  • Samartín, Avelino
  • Ortega, Roberto
  • Tirado, Francisco
  • Araujo, Alvaro
  • Nieto-Taladriz García, Octavio
  • Blesa Martínez, Javier
  • Romero Perales, Elena
  • Reynders, Edwin
  • De Roeck, Guido
  • He, Leqia
Item Type: Presentation at Congress or Conference (Article)
Event Title: Experimental Vibration Analysis for Civil Engineering Structures
Event Dates: 03/10/2011 - 05/10/2011
Event Location: Varenna, Italy
Title of Book: Experimental Vibration Analysis for Civil Engineering Structures
Título de Revista/Publicación: Proceedings of the International Conference on Experimental Vibration Analysis for Civil Engineering Structures EVACES 2011
Date: 2011
ISBN: 978-88-96225-39-4
Subjects:
Freetext Keywords: SHM, Wireless sensors, Bridge monitoring
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Hidráulica, Energía y Medio Ambiente
UPM's Research Group: Grupo de Ingeniería Estructural
Creative Commons Licenses: None

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Abstract

Dynamic measurements will become a standard for bridge monitoring in the near future. This fact will produce an important cost reduction for maintenance. US Administration has a long term intensive research program in order to diminish the estimated current maintenance cost of US$7 billion per year over 20 years. An optimal intervention maintenance program demands a historical dynamical record, as well as an updated mathematical model of the structure to be monitored. In case that a model of the structure is not actually available it is possible to produce it, however this possibility does not exist for missing measurement records from the past. Current acquisition systems to monitor structures can be made more efficient by introducing the following improvements, under development in the Spanish research Project “Low cost bridge health monitoring by ambient vibration tests using wireless sensors”: (a) a complete wireless system to acquire sensor data, (b) a wireless system that permits the localization and the hardware identification of the whole sensor system. The applied localization system has been object of a recent patent, and (c) automatization of the modal identification process, aimed to diminish human intervention. This system is assembled with cheap components and allows the simultaneous use of a large number of sensors at a low placement cost. The engineer’s intervention is limited to the selection of sensor positions, probably based on a preliminary FE analysis. In case of multiple setups, also the position of a number of fixed reference sensors has to be decided. The wireless localization system will obtain the exact coordinates of all these sensors positions. When the selection of optimal positions is difficult, for example because of the lack of a proper FE model, this can be compensated by using a higher number of measuring (also reference) points. The described low cost acquisition system allows the responsible bridge administration to obtain historical dynamic identification records at reasonable costs that will be used in future maintenance programs. Therefore, due to the importance of the baseline monitoring record of a new bridge, a monitoring test just after its construction should be highly recommended, if not compulsory.

More information

Item ID: 34945
DC Identifier: http://oa.upm.es/34945/
OAI Identifier: oai:oa.upm.es:34945
Official URL: http://ing.univaq.it/evaces_2011/index.php
Deposited by: Dr Jaime H. García-Palacios
Deposited on: 16 Apr 2015 15:30
Last Modified: 16 Apr 2015 15:30
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