摘要
针对桥梁外剪力键抗震性能问题,北京工业大学桥梁抗震课题组在总结国内外桥梁外剪力键研究现状基础上,通过试验研究和理论分析得到我国现有桥梁外剪力键以及新型可复位剪力键的破坏形态,失效模式和力学机制,建立了不同破坏模式下外剪力键承载能力计算公式,并给出了不同受力机制下力-位移关系曲线简化分析模型。本文提出方法得到的结果与试验数据吻合较好。在此基础上,给出了新型可复位剪力键的细节构造,以及剪力键和桥台干墙接合面构造措施,使剪力键真正起到桥梁结构保险丝的作用。
Seismic performance of the exterior shear key of highway bridges are summarized and reviewed in this paper. Experimental research and theoretical analysis are carried out to investigate the damage mechanism and failure mode of the bridge exterior shear key in China and novel resilient shear key. The capacity formulas are devised for the shear keys with different failure modes, and the analytical models are proposed to evaluate the force-displacement behavior for the shear keys with different mechanical mechanisms. The calculated results provided in this paper are good tween the novel ses. agreed with the experimental data. The reinforcement detail and construction of the interface beresilient shear key and supporting are provided to ensure that the shear keys can play the role of fuses.
出处
《地震工程与工程振动》
CSCD
北大核心
2015年第5期1-7,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51178008
51421005)
北京市教委科研计划项目(KZ201410005011)
关键词
桥梁工程
外剪力键
抗震性能
承载能力
分析模型
bridge engineering
exterior shear key
seismic performance
bearing capacity
analytical model
