Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Motion-Dependent Forces on Streamlined Bridge Girders and Their Influencing Parameters – Observations from Wind Tunnel Buffeting Response Data
Aerodynamic stability of long-span bridges is most readily examined in the frequency domain, with self-excited forces modelled as linearized functions of the bridge velocities and displacements. The present paper briefly recalls the experimental approaches to characterize the motion-dependent forces, and further explores the validity of superposition of the linearized load components, in presence of various influencing parameters. Flutter derivatives obtained with section models of two streamlined bridge girders in ambient vibrations are revisited. Emphasis is placed on the influence of the twisting to vertical frequency ratio and the type of the participating degrees of freedom on the identified wind-structure interaction. A novel aspect of the analysis of the buffeting response data is also attempted, in order to isolate the significance of the twisting amplitude on the self-excited wind forces in ambient vibrations.
Motion-Dependent Forces on Streamlined Bridge Girders and Their Influencing Parameters – Observations from Wind Tunnel Buffeting Response Data
Aerodynamic stability of long-span bridges is most readily examined in the frequency domain, with self-excited forces modelled as linearized functions of the bridge velocities and displacements. The present paper briefly recalls the experimental approaches to characterize the motion-dependent forces, and further explores the validity of superposition of the linearized load components, in presence of various influencing parameters. Flutter derivatives obtained with section models of two streamlined bridge girders in ambient vibrations are revisited. Emphasis is placed on the influence of the twisting to vertical frequency ratio and the type of the participating degrees of freedom on the identified wind-structure interaction. A novel aspect of the analysis of the buffeting response data is also attempted, in order to isolate the significance of the twisting amplitude on the self-excited wind forces in ambient vibrations.
Motion-Dependent Forces on Streamlined Bridge Girders and Their Influencing Parameters – Observations from Wind Tunnel Buffeting Response Data
Lecture Notes in Civil Engineering
Ricciardelli, Francesco (Herausgeber:in) / Avossa, Alberto Maria (Herausgeber:in) / Jakobsen, J. B. (Autor:in)
Conference of the Italian Association for Wind Engineering ; 2018 ; Naples, Italy
Proceedings of the XV Conference of the Italian Association for Wind Engineering ; Kapitel: 31 ; 387-401
13.03.2019
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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