Open AccessNUMERICAL SIMULATION OF AERODYNAMIC STABILITY OF LONG-SPAN BRIDGES
Author(s) -
А. В. Козлов,
V. S. Safronov
Publication year - 2021
Publication title -
russian journal of building construction and architecture
Language(s) - English
Resource type - Journals
ISSN - 2542-0526
DOI - 10.36622/vstu.2021.52.4.010
Subject(s) - bridge (graph theory) , aerodynamics , vibration , span (engineering) , structural engineering , stability (learning theory) , aerodynamic force , beam (structure) , damper , vortex shedding , computer science , engineering , turbulence , mechanics , physics , aerospace engineering , medicine , machine learning , reynolds number , quantum mechanics
Statement of the problem. The aim of the work is to simulate the resonant vibrations of the continuous beam span of the bridge in the direction perpendicular to the wind flow by the finite element method. The article deals with a non-standard situation that arose on May 20, 2010 on the bridge over the Volga River in the city of Volgograd.Results. As a result, an effective algorithm for calculating the aerodynamic stability of large-span bridge structures was developed using one of the most widespread software systems in Russia and neighboring countries - "Lira-SAPR". Recommendations for the selection and modeling of dampers are given. Conclusions. The developed algorithm makes it possible to numerically describe the disturbing force of periodic breakdown of wind flow vortices, which causes resonant oscillations of bridge spans, to apply this force to the design model in Lira-SAPR, and to obtain parameters that make it possible to assess the stress-strain state of the system during oscillations and to select the optimal characteristics of the damping devices.