Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Suspended‐Span Bridges
Suspended‐span bridges must withstand drag forces induced by the mean wind. In addition, they may experience aeroelastic effects, which may include vortex‐induced oscillations, flutter, and buffeting in the presence of self‐excited forces. The study of these effects is possible only on the basis of information provided by wind tunnel tests. This chapter describes the various types of such tests and considers vortex‐induced vibrations of bridge decks. It reviews bridge buffeting in the presence of aeroelastic effects and discusses vibrations occurring in cables of cable‐stayed bridges. The three types of wind tunnel tests commonly used to obtain information on the aerodynamic behavior of suspended‐span bridges are tests on models of the full bridge, tests on three‐dimensional partial‐bridge models, and tests on section models. Common mechanical approaches to mitigating low‐frequency, large‐amplitude stay cable vibrations include increasing the damping by installing dampers and using cross‐ties.
Suspended‐Span Bridges
Suspended‐span bridges must withstand drag forces induced by the mean wind. In addition, they may experience aeroelastic effects, which may include vortex‐induced oscillations, flutter, and buffeting in the presence of self‐excited forces. The study of these effects is possible only on the basis of information provided by wind tunnel tests. This chapter describes the various types of such tests and considers vortex‐induced vibrations of bridge decks. It reviews bridge buffeting in the presence of aeroelastic effects and discusses vibrations occurring in cables of cable‐stayed bridges. The three types of wind tunnel tests commonly used to obtain information on the aerodynamic behavior of suspended‐span bridges are tests on models of the full bridge, tests on three‐dimensional partial‐bridge models, and tests on section models. Common mechanical approaches to mitigating low‐frequency, large‐amplitude stay cable vibrations include increasing the damping by installing dampers and using cross‐ties.
Suspended‐Span Bridges
Simiu, Emil (Autor:in) / Yeo, DongHun (Autor:in)
Wind Effects on Structures ; 331-346
19.02.2019
16 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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