华中科技大学学报（自然科学版）Issue(8)：123-127,5.DOI:10.13245/j.hust.140825
桥梁支座双向耗能钢阻尼器力学性能研究
Study on mechanical properties of bidi rectional energy dissipation steel damper used with bridge bearing
摘要
Abstract
A new type of bidirectional energy dissipation steel damper was designed which was used with the bridge bearing .The damper dissipated the vibration energy through the elastic-plastic ben-ding deformation of the curved beam .First ,the simplified mechanic model of the damper was pro-posed ,and then the theoretical formulas of its main factor were discussed based on the simplified steel constitutive model .At last ,its finite element model was established ,and the mechanical performance was studied under the monotonic loading condition and the cycling loading condition .The results show that the w hole energy-dissipated part of the damper becomes plastic firstly ,and then the plastic de-formation concentrates in the middle part of it ,which is reasonable and is consistence with the desig-ner′s intention .The theoretical factors are similar with those through the finite element analysis ,so the formulas can effectively reflect the working performance of the damper .The hysteretic curve of the damper under the cycling loading condition is plump with a large initial stiffness ,thus ,the damper exhibits good energy dissipation performance .关键词
桥梁/双向耗能支座/滞回性能/钢阻尼器/骨架曲线Key words
bridge/bidirectional energy dissipation bearing/hysteretic curve/steel damper/skeleton curve分类
建筑与水利引用本文复制引用
李爱群,贺星新,李建慧,刘贝..桥梁支座双向耗能钢阻尼器力学性能研究[J].华中科技大学学报（自然科学版）,2014,(8):123-127,5.基金项目
国家自然科学基金资助项目（51278104；50725828）；江苏省高校自然科学研究项目（12KJB560003）． （）
