Product introduction:
Preload spring damper is a combination of the elastic characteristics of the spring and the damping function of the damper, and specially designed the preload mechanism of the unique device, can better adapt to a variety of shock absorption needs. The constitutive relationship of the viscous damper is F=F0+Kx+Cvα (where F0 is the preload force, Kx is the elastic force of the spring, and Cvα is the viscous damper force). The preload or spring unit is selected according to the actual engineering requirements, and the corresponding constitutive relationship is F=Kx+Cvα或F=F0+Cvα. Preload F0makes the product behave as a rigid rod under conventional working conditions (braking force, wind load, small earthquake, etc.) without relative movement; the elastic force Kx can bring the bridge automatically back to the initial position after the earthquake.
Core advantage:
1.Can efficiently absorb and dissipate energy when the structure vibrate.
2.Through preloading, enhance the damping effect, help to improve the stability and safety of the structure.
3.The spring provides a certain reset stiffness for the bridge, which helps the bridge to reset after the earthquake and facilitate the post-earthquake repair.
Application case: The product is installed and used in yanpingba Yangtze River Bridge.
