The damping ratio of seismic insulator can reach 15%-30%,while the ordinary rubber bearings is bellow 5%, The rubber insulators can extend the bridge and buiding structure period and largely shorten acceleration speed of the uppper structure, so it greatly improved the stress condition during earthquake, we can use rubber insulators in the area of more than 8 degrees earthquacke.
The types of seismic insulator 1.According to the degree of dampingpoints
(1)Lead rubber bearings
(2)High damping rubber bearings
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seismic insulators,Testing , packaging and delivery
OUR seismic insulator ON EXHIBITION
Seismic insulator in the construction site of bridges and buildings
The advantage of seismic insulator
1.Stiff and strong in vertical direction but flexible in horizontal direction. 2.Allow the buildings to retain their original shapes and position owing to the high elastic force of rubber. 3.Capable to adjust damping amount just by changing the number of lead plugs. 4.Excellent vertical load capacity ranging from 5 tons to 2000 tons. 5.Reduce the ground acceleration by extending the structure vibration period. 6.High durable and elasticity of the rubber part - not suffer any damages during and after earthquake. 7.Easy to install without a separated damper. 8.Low maintenance. 9.Stable bilinear behavior.
As your request, the lead rubber bearing can be manufactured in rectangular or round shapes. Custom sizes and designs are also welcomed.
Bridge bearings and expansion joint are important parts of whole bridge components, but the amount money that spent on bridge bearing and expansion joint is only 2-3.5%, it is absolutely a wise choice to evaluate it within the whole project to prevent failed choice bringing unnecessary costs.