Abstract Rubber based devices for seismic isolation have been adopted worldwide to protect buildings and bridges from seismic events. Very recently, a significant research effort has been dedicated to the study of Fiber Reinforced Bearings (FRBs), a low cost rubber based device for seismic hazard mitigation. In some applications, FRBs could be preferred over traditional steel reinforced isolators as: (i) they are lighter than conventional devices, (ii) FRBs can be produced with an easy manufacturing process where each bearing is cut to size and shape from a pad of large dimensions, (iii) FRBs require materials with low mechanical properties and cost. This is because FRBs are generally adopted in unbounded configurations and they are free to roll off from the supports. While these devices have shown to be an effective passive protection strategy in many applications, the effects of aging and other environmental conditions on the mechanical properties of these bearings are still to be addressed. With this consideration in mind, the aims of this work are those of: (i) studying the long-term performance and durability of FRBs through experimental testing, (ii) verifying the effects of aging on the response of FRBs both in compression and shear, (iii) determining the effects of aging of the bearings on the seismic response of a benchmark base isolated building, while (iv) comparing the as new and aged response of neoprene FRBs against that of conventional steel reinforced bearings. This work contributes toward determining the viability of FRBs as base isolation devices for residential buildings and toward determining the effects of their aging on the seismic response of a typical residential building.

中文翻译：

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玻璃纤维增​​强支座（FRBs）长期老化对基础隔震住宅地震响应的影响

摘要 基于橡胶的隔震装置已在世界范围内被采用以保护建筑物和桥梁免受地震事件的影响。最近，一项重要的研究工作致力于研究纤维增强轴承 (FRB)，这是一种用于减轻地震危害的低成本橡胶装置。在某些应用中，FRB 可能优于传统的钢加强型隔振器，因为：(i) 它们比传统设备更轻，(ii) FRB 可以通过简单的制造工艺生产，其中每个轴承都从大尺寸，(iii) FRB 需要具有低机械性能和成本的材料。这是因为 FRB 通常在无界配置中采用，并且它们可以从支撑上自由滚落。虽然这些装置在许多应用中已被证明是一种有效的被动保护策略，但老化和其他环境条件对这些轴承机械性能的影响仍有待解决。考虑到这一点，这项工作的目的是：（i）通过实验测试研究 FRB 的长期性能和耐久性，（ii）验证老化对 FRB 在压缩和剪切中的响应的影响, (iii) 确定支座老化对基准隔离建筑物地震响应的影响，同时 (iv) 将氯丁橡胶 FRB 的新旧响应与传统钢加强支座的响应进行比较。