（长安大学建筑工程学院， 西安 710000）

［摘要］以受控摇摆桥墩为研究对象，研究其滞回性能和稳定性。通过理论推导得到水平力-转角曲线及抗侧移刚度-转角曲线，并提出简化的滞回模型，采用案例详细分析阻尼器各参数对受控摇摆桥墩的滞回性能及抗侧移刚度的影响。结果表明：阻尼器的屈服强度对摇摆桥墩耗能能力有较大的影响，阻尼器其他参数不影响结构的耗能能力且对滞回性能影响较小；在受控摇摆桥墩转动过程中，桥墩自身的抗侧移刚度数值变化很小。

［关键词］摇摆桥墩； 阻尼器； 抗侧移刚度； 滞回性能

中图分类号： TU352    文献标识码： A    文章编号： 1002-848X(2015)S2-0519-04

Study on the hysteretic mechanics and stability of rocking bridge piers

Li Bo， Zhang Xiaobo

(School of Architecture Engineering, Chang′an University, Xi′an 710000， China)

Abstact: Based on the rocking bridge piers as the research object, the hysteretic mechanics and stability were researched. Kinds of cases were taken into account to investigate the horizontal force-rotation curve and lateral stiffness-rotation curve. Then, simplified hysteresis model was put forward. The study results show that yield strength of the damper affect energy dissipation of rocking bridge piers and other components of the damper has little effect. The lateral stiffness-rotation changes little in the process of rotation.

Keywords: rocking-bridge pier; damper; lateral stiffness; hysteretic mechanics

作者简介： 李波，博士，副教授，一级注册结构工程师，Email：liboxuat@163.com。