Ambient Vibration Test of a Prestressed Concrete Box Girder Bridge
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| Autores: | , |
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| 格式: | artículo original |
| 状态: | Versión publicada |
| Fecha de Publicación: | 2017 |
| 实物特征: | This paper presents the results of an off-line vibration based monitoring of a simply-supported, prestressed concrete box girder bridge. The structure evaluated was the Tenorio River Bridge in National Route 1, Costa Rica, which was built in 2014. The purpose of the study was to register the dynamic response of the bridge under operational conditions and to identify its vibration modes using the covariance driven stochastic subspace identification method (SSI – COV). The ambient vibration test was carried out using a hybrid monitoring system developed by LanammeUCR. Uniaxial accelerometers were used to register the accelerations at 25 different locations on the bridge for approximately 40 minutes. Through the analysis of the data, nine vibration modes were identified in the frequency range of 0 to 25 Hz, including vertical bending modes, torsional modes and one transverse bending mode. |
| País: | Portal de Revistas UCR |
| 机构: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| 语言: | Español |
| OAI Identifier: | oai:archivo.portal.ucr.ac.cr:article/25421 |
| 在线阅读: | https://archivo.revistas.ucr.ac.cr/index.php/materiales/article/view/25421 |
| Palabra clave: | Monitoreo de salud estructural Análisis modal operacional Vibraciones ambientales Puente tipo viga cajón Evaluación de puentes Structural health monitoring Operational modal analysis Ambient vibrations Box girder bridge Bridge evaluation |