Cable stabilization for wind and moving load effect

Abstract

Abstract Cable dynamic stabilization is a complex way of calculating, constructing and organizing measures which serve to avoid the appearance of resonance oscillations of any of the cables both during the span structure erection or during bridge use. Cable oscillations may have different origins: (i) the cable aeroelastic instability in the wind flow; (ii) the pylon dynamic behaviour at its interaction with the wind flow; (iii) the span structure dynamic behavior in the field of the wind and moving loads; (iv) the ice and rime acretion on the cables; (v) the cable interaction with the wind flow in raining conditions. Here detailed classification of the cable oscillation damping methods is given, and also their effectiveness and the sphere of application. The methods for cable stabilization worked out by the authors have high effectiveness, maintainability, the necessary aesthetic norms, erection and manufacturing simplicity, vehicle and pedestrian safety, and do not call for high use costs. The high effectiveness of the above methods is shown by means of examples of three large cable-stayed bridges in Riga, Latvia, across the Daugava in Kiev, Ukraine, across the Dnieper and in Uljanovsk, Russia, and across the Volga.