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地震对桥梁的危害是巨大的,基于桥梁抗震设计的结构控制技术,已在我国桥梁工程界得到日益重视,并逐步开展了桥梁减隔震设计研究工作。利用弹塑性钢塑性变形来耗能的金属阻尼支座是目前桥梁减隔震支座的一个重要分支。对一个常见的弹塑性钢减震支座结构进行了滞回分析、连接销和本体的计算分析。结果表明,该支座滞回曲线饱满,耗能效果好,基于能力保护构件设计的连接销和本体处于较低的弹性应力状态,满足了支座结构的受力要求。
The harm of the earthquake to the bridge is enormous. Based on the structural control technology of the seismic design of the bridge, it has been paid more and more attention in the field of bridge engineering in our country and the research work of reducing and isolating the bridge is carried out gradually. The use of elastic deformation of plastic deformation of steel to dissipate the metal damping bearing damping reduction is an important branch of the bridge. Hysteresis analysis, calculation and analysis of the connecting pin and the body are carried out on a common elastic-plastic steel shock-absorbing support structure. The results show that the hysteresis curve of the bearing is full and the energy dissipation effect is good. The connecting pin and the body based on the capacity protection member are in a state of low elastic stress, which meets the bearing requirements of the bearing structure.