Product Introduction
Description:
High-Damping Seismic Isolators
Our high damping seismic isolators are a series of meticulously engineered components designed for seismic isolation bridges. Developed by China Communications First Highway Survey, Design, and Research Institute Co., Ltd., these isolators adhere to the stringent national standards (GB 20688), relevant industry norms, and European standards. These patented innovations, backed by significant provincial and ministerial research projects, have garnered provincial and ministerial level scientific and technological achievement appraisals (Shaan Ke Jian Zi [2010] No. 097) and pertinent certifications. This series has been elevated to the transportation industry standard of the People's Republic of China (JT 2009-26), making them ideal for various types of highways and municipal bridges in regions with seismic intensity levels up to 9 degrees.
Isolation rubber bearings offer the combined benefits of plate bearings and superior isolation performance, effectively mitigating earthquake-induced damage to bridges. High damping rubber bearings, a specific type of isolation rubber bearings, are crafted from advanced high damping rubber materials. These bearings achieve a damping ratio of 10% to 16%, mirroring the shape and structure of natural rubber bearings but featuring high-viscosity rubber material that self-absorbs energy and exhibits exceptional ductility. During seismic activity, they extend the natural vibration period of structures, reduce seismic forces, and leverage their energy dissipation properties for effective seismic isolation, performing comparably to lead core sandwich rubber bearings.
By utilizing high damping composite rubber material as a substitute for lead core, and optimizing the proportion of filling material to modify the overall damping, these bearings exhibit robust energy consumption capabilities and effective isolation reduction. High damping rubber bearings demonstrate stable performance, strong energy dissipation, and remarkable ductility. With higher equivalent viscous damping, they possess superior energy dissipation properties, yielding significant seismic isolation effects and effectively controlling the seismic response of isolated structures. Their integrated functional design results in a smaller volume compared to lead core bearings, saving space, facilitating easier construction, and offering a cost-effective alternative to lead core sandwich rubber bearings.
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