智能盆式橡胶支座设计及性能研究

Design and performance of an intelligent basin rubber bearing

目前桥梁橡胶支座的健康监控通常采用定时手工和目测检测方法。针对手工和目测方法存在操作不便、危险性较高、无法完全确定支座可靠性等问题,设计一种安全可靠且经济的智能盆式支座。智能盆式支座的设计方法:在普通盆式支座的基础上进行结构改造,并在内部布设传感器,连接应力-应变采集系统,组成可视化监测网络,实现支座整体受压变形和内部应力-应变数据实时采集及其可视化监控,从而保障桥梁结构安全。采用支座实体试验和有限元分析计算方法对同一盆式橡胶支座的受力进行对比分析和相互验证。结果表明,智能盆式支座的力学性能与普通盆式橡胶支座原型的力学性能基本相似,由此验证了橡胶支座智能化设计的可靠性,为该类支座产业化设计和推广应用提供理论和试验依据。

An intelligent basin rubber bearing is designed aimed at the inconvenient operation,high risks,and inability to determine the reliability of the bearing by manual and visual inspection methods in the current health monitoring of the bridge rubber bearing.The mechanical sensors were arranged in the conventional rubber bearing;the stress and strain acquisition system was connected;a visual monitoring network was formed to implement the real-time collection of bearing strain data and visual monitoring.Then,the physical experiment method and finite element analysis method were used to compare,analyze,and calculate the force of the same rubber bearing.It is found that the mechanical properties of intelligent basin rubber bearing are basically similar to those of ordinary basin rubber bearing prototype.The research verifies the reliability of the design,thus providing a theoretical and experimental basis for industrial design and application of this intelligent basin rubber bearing.