Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modal identification of single-span railway viaducts
The paper reports on the results of the modal identification of several small to medium span railway viaducts. The identification was based mainly on the free vibration of each structure immediately after the train passages. The non-linear behavior of some components, namely the ballast and the aged bearing supports, conditioned the evolution of the free vibration signals, which showed increasing values for the eigenfrequencies and lower values for the damping as far as the vibration amplitude decreased. An estimate for the ballast shear stiffness and for the influence of the superstructure (track plus ballast) in the overall dynamic behaviour could also be obtained from the measurements evaluation.
Modal identification of single-span railway viaducts
The paper reports on the results of the modal identification of several small to medium span railway viaducts. The identification was based mainly on the free vibration of each structure immediately after the train passages. The non-linear behavior of some components, namely the ballast and the aged bearing supports, conditioned the evolution of the free vibration signals, which showed increasing values for the eigenfrequencies and lower values for the damping as far as the vibration amplitude decreased. An estimate for the ballast shear stiffness and for the influence of the superstructure (track plus ballast) in the overall dynamic behaviour could also be obtained from the measurements evaluation.
Modal identification of single-span railway viaducts
Rebelo, Carlos (Autor:in) / Rigueiro, Constança (Autor:in) / Silva, Luís Simões da (Autor:in)
10.07.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
DDC:
624
Vibration measurements on existing single-span concrete railway viaducts in Austria
| British Library Conference Proceedings | 2005
Engineering Index Backfile | 1933