Eddy current tuned mass damper can effectively solve the bridge vibration problem caused by human resonance and wind induced vortex vibration. After the eddy current tuned mass damper is installed, the damping ratio of the main structure can be increased, the vibration attenuation rate can be accelerated, the amplitude can be reduced, and the fatigue can be reduced. Improve people's sense of comfort.
Bridge vertical eddy tuned mass damper (reduce vertical vibration amplitude)
Through the finite element analysis of the model, the eddy-current tuned mass damper could be installed in the position of the corresponding model order of the bridge when the model exceeds the acceleration limit (according to the EN03 German Design of Footbridges Guideline, it’s considered the model with the frequency in the range of 1.25-4.6Hz). Generally the damper installed in the bridge box girder, between the trusses.
Total mass of the damper | 1.3-1.5 times effective mass of vibrator | Overall dimension | 1000*700*600mm | Self-dissipative damping ratio | 5%-15%（Flexible adjustment） |
Frequency range | 1.25Hz-4.6Hz | Effective mass of vibrator | 800-1600kg（Adjust for modal mass） | Working temperature | -40℃-80℃ |
Note: According to the analysis parameters of the bridge finite element model, the parameters and dimensions of the damper can be customized.
Bridge horizontal eddy current tuned mass damper
The horizontal eddy current tuned mass damper is used to control the amplitude and displacement of horizontal transverse and horizontal longitudinal of the pedestrian landscape bridge. According to the German EN03 design guideline, the horizontal and transverse frequency is 0.5-1.2Hz, and the horizontal vertical frequency is 1.25-4.6Hz.
Total mass of the damper | 1.5 times effective mass of vibrator | Overall dimension | 1000*700*height mm (Height varies with frequency) | Self-dissipative damping ratio | 5%-15%（Flexible adjustment） |
Frequency range | 0.5Hz-1.2Hz | Effective mass of vibrator | 500-1000kg （Adjust for modal mass） | Working temperature | -40℃-80℃ |
Note: According to the analysis parameters of the bridge finite element model, the parameters and dimensions of the damper can be customized.
Vertical eddy current tuned mass damper for building slibs and roof (reduces vertical vibration amplitude)
Building eddy current tuned mass dampers are generally installed in sports venues, building roofs, building floors, prefabricated buildings and truss corridors where human activities are more frequent. It is mainly used to improve human comfort.
Total mass of the damper | 1.5 times effective mass of vibrator | Overall dimension | 1000*700*200mm | Self-dissipative damping ratio | 5%-15% (Flexible adjustment) |
Frequency range | 5Hz (Determined by floor finite element analysis) | Effective mass of vibrator | 200kg (Adjust for modal mass) | Working temperature | -40℃-80℃ |
Note: According to the analysis parameters of the building finite element model, the parameters and dimensions of the damper can be customized.
