Product Introduction
Description:
High damping seismic isolators
Our high damping seismic isolators are meticulously crafted as a series of premier components designed for seismic isolation in bridge structures. Developed by China Communications First Highway Survey, Design and Research Institute Co., Ltd., these isolators adhere to the stringent national standards (GB 20688) and relevant industry norms, while also incorporating elements from esteemed European standards. These innovative components are the result of patented technological advancements, supported by significant scientific research projects at both provincial and ministerial levels. Having successfully passed rigorous scientific and technological achievement appraisals (Shaan Ke Jian Zi [2010] No. 097) and earning relevant certifications, these products have been elevated to the transportation industry standard of the People's Republic of China (JT 2009-26). They are ideally suited for application across various highways and municipal bridges located within seismic intensity zones of up to 9 degrees.
Isolation rubber bearings offer exceptional performance and robust isolation capabilities, significantly reducing earthquake-induced damage to bridges. Specifically, high damping rubber bearings, a specialized type of isolation rubber bearing, are engineered from high damping rubber materials achieving a superior damping ratio of 10% to 16%. While their shape and structure mirror those of natural rubber bearings, the high viscosity of the rubber material endows them with self-absorbing energy characteristics and exceptional ductility. These bearings extend the natural vibration period of structures during seismic events, lessen seismic forces, and utilize their energy dissipation properties to serve a vital role in seismic isolation, matching the performance seen in lead core sandwich rubber bearings.
Our advanced high damping rubber bearings replace the traditional lead core with a high damping composite rubber material, allowing for adjustable filling material proportions to optimize total damping. This results in significant energy consumption capabilities and enhanced isolation effects. These bearings exhibit stable performance, remarkable energy dissipation, and superior ductility. The higher equivalent viscous damping translates to greater energy dissipation, providing outstanding seismic isolation effects and effectively managing the seismic response of isolated structures. Additionally, the integration of functionalities leads to a more compact design compared to lead core bearings, conserving space and facilitating easier construction, all while offering a more cost-effective solution than lead core sandwich rubber bearings.
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