Product Introduction
Description:
High Damping Seismic Isolators
High damping seismic isolators represent a groundbreaking series of standard components for seismic isolation bridges. These exceptional products have been meticulously developed by the China Communications First Highway Survey, Design and Research Institute Co., Ltd. They adhere to the highest national standards (GB 20688) and relevant industry norms, incorporating insights from prestigious European standards. Our patented technology is the fruition of major scientific and technological research projects, proudly funded at both provincial and ministerial levels. This innovative series has successfully passed the stringent provincial and ministerial level scientific and technological achievement appraisal (Shaan Ke Jian Zi [2010]) No. 097, alongside obtaining critical related certifications. Elevated to the transportation industry standard of the People's Republic of China (JT 2009-26), these products are ideally suited for a wide array of highways and municipal bridges in seismic regions up to 9 degrees of earthquake intensity.
Isolation rubber bearings embody the remarkable performance characteristics of plate bearings while excelling in seismic isolation. They are designed to significantly mitigate earthquake damage to bridges. High damping rubber bearings stand out as a specialized type of isolation rubber bearings crafted from advanced high damping rubber materials, achieving a remarkable damping ratio between 10% and 16%. Although their structure mirrors that of natural rubber bearings, the high viscosity rubber material enhances energy absorption and ductility. During seismic events, these bearings effectively extend the natural vibration period of structures, reduce seismic forces, and leverage their energy dissipation properties to provide superior seismic isolation, matching the performance of lead core sandwich rubber bearings.
Opting for high damping composite rubber material over the traditional lead core, this innovative approach allows for adjusting the proportion of filling material to alter the total damping, thereby enhancing energy dissipation capabilities. High damping rubber bearings deliver remarkable stability, exceptional energy dissipation, and outstanding ductility. Their superior equivalent viscous damping translates to higher energy dissipation, offering significant seismic isolation effects that adeptly control the seismic response of isolated structures. The functional integration results in a more compact volume compared to lead core bearings, saving precious space, simplifying construction, and providing a cost-effective solution compared to lead core sandwich rubber bearings.
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