Experimental analysis and model updating of a bowstring arch railway bridge

• Type: Article in International Conference Proceedings Book
• Date: 2008

Authors

Ribeiro, D (Author) Other; Almeida, P (Author) Other; Rui Calçada (Author) FEUP; Delgado, R (Author) Other

Conference proceedings International

Title: 7th European Conference on Structural Dynamics, EURODYN 2008

7th European Conference on Structural Dynamics, EURODYN 2008

7 July 2008 through 9 July 2008

Indexing

Scopus - 1 Citation

Other information

Authenticus ID: P-00K-8S8

Abstract (EN): This paper focuses on the development and experimental updating of a numerical model for the dynamic analysis of São Lourenço railway bridge under traffic loads. The preliminary experimental campaign consisted of an ambient vibration test and a dynamic test under traffic loads. The comparison between numerical and experimental natural frequencies and mode shapes revealed important limitations of the initially developed numerical model. The study of the influence of several parameters in the dynamic properties of the structure enabled to identify the mass of the deck, modulus of elasticity of the concrete and the vertical stiffness of the supports as key parameters for the numerical model updating. The updated numerical model was used for the simulation of the dynamic response of the bridge under traffic loads and a good agreement between numerical and experimental results was obtained.

Language: English

Type (Professor's evaluation): Scientific