摘要
基于地震损伤控制设计的思想,作者提出了一种耗能型辅助墩结构形式。为了研究辅助墩的抗震性能,保护强震作用下超大跨斜拉桥的主塔,该文采用非线性静力分析方法对辅助墩的各种参数进行了分析,探讨了墩柱尺寸及间距,软钢剪力连杆尺寸、布置道数及间距等参数变化对辅助墩抗震性能的影响。结果表明:混凝土墩柱和剪力连杆的刚度需要一个合适的比例,墩柱间距应满足剪力连杆发生剪切型屈服的要求,剪力连杆布置方式的影响可以忽略。
Based on seismic damage control design strategies, a kind of new energy dissipation subsidiary piers is proposed. In order to investigate the seismic performance of subsidiary piers and protect the towers of long span cable-stayed bridges under a strong earthquake, various parameters of subsidiary piers are analyzed employing a nonlinear static analysis method in this paper. The influences of the parameters which include dimensions and spacing of columns, dimensions, numbers and spacing of shear links on the seismic performance of subsidiary piers are discussed. The results show that appropriate stiffness ratio of columns and shear links is needed, and the distance between columns satisfies the requirement of the shear yield of shear links, and the influence of the layout fashion of shear links is ignored.
出处
《工程力学》
EI
CSCD
北大核心
2012年第A01期156-161,共6页
Engineering Mechanics
基金
国家自然科学基金重大研究计划重点支持项目(90915011)
关键词
损伤控制
耗能
辅助墩
非线性静力分析
参数研究
软钢剪力连杆
damage control
energy dissipation
subsidiary piers
nonlinear static analyses
parameter studies
mild steel shear links
