摘要
基于桥梁对横向金属阻尼器的抗震性能需求,在现有钢阻尼器研究成果的基础上,提出了一种适用于桥梁横向的新型金属阻尼器。然后阐明其力学性能,并提出了金属阻尼器的优化设计方法。最后,制作金属阻尼器试件进行了拟静力试验。研究结果表明,新型金属阻尼器具有很好的滞回耗能特性,滞回模型可采用等效双线性模型,同时具有很大的位移能力(漂移率大于50%),并且能够很好地适应地震过程中复杂的接触条件,不同三角形钢板具有很好的同步性。
Based on aseismic performance demand of a bridge in transverse direction and current study results of metallic damper,a new type of metallic damper was proposed.Its mechanical performance was presented firstly and then an optimization design method for metallic damper was introduced.Finally,a quasi-static test was carried out on two samples of designed metallic dampers.The results showed that this new type of metallic damper possesses a good property of hysteretic energy-dissipation,its hysteretic model can adopt an equivalent bilinear model;moreover,the metallic damper has a large displacement capacity （drift ratio is larger than 50%）and it can adapt to the complex contact condition during ground motion;in addition,different triangular steel plates exhibit a perfect synchronism substantially.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第21期96-101,共6页
Journal of Vibration and Shock
基金
973计划项目(2013CB036302)
国家自然科学基金(51278375)
土木工程防灾国家重点实验室项目(10-B-09)
关键词
金属阻尼器
横向抗震需求
桥梁横向
位移能力
滞回耗能
metallic damper
transverse aseismic demand
transverse direction of bridge
displacement capacity
hysteretic energy-dissipation
