建筑钢结构进展2025，Vol.27Issue(5)：57-67,11.DOI:10.13969/j.jzgjgjz.20231108001
带可替换剪切耗能梁段的防屈曲偏心支撑钢框架动力试验研究
Dynamic Test of Steel Eccentrically Buckling-Restrained Braced Frames with Replaceable Shear Links
摘要
Abstract
As an independent energy-dissipating component designed separately from the eccentrically braced steel frame,the replaceable shear links not only confine the plastic deformation of the structure to the region of the energy-dissipating links during large earthquakes,but also,more importantly,facilitate the repair of the structure after the earthquake.In this paper,three scaled models of this steel frame structure were fabricated and unidirectional shaking table tests were conducted to obtain the dynamic characteristics,plastic development and damage mechanism of the structure,and the stress distribution,displacement response and acceleration response of the model were analysed and studied.The results show that the specimen has good energy dissipation performance,and the sequential energy dissipation of shear links and buckling-restrained brace members makes the structure have good seismic performance under earthquake.The maximum inter-story drift angle of the buckling-restrained eccentrically braced steel frame specimen with replaceable shear links meets the requirements of the code,and it has a good safety as well as strength reserve.The structural deformation is mainly dominated by shear deformation,and the increase of shear force in each layer is relatively balanced,and it has excellent seismic performance.The acceleration amplification factor of the multi-story structure can be reduced under large earthquakes to effectively reduce the dynamic response of the structure.关键词
可替换剪切耗能梁段/偏心支撑/防屈曲支撑/振动台试验/位移响应/应力分布/加速度放大系数Key words
replaceable shear link/eccentric brace/buckling-restrained brace/shaking table test/displacement response/stress distribution/acceleration amplification factor分类
建筑与水利引用本文复制引用
殷占忠,李星..带可替换剪切耗能梁段的防屈曲偏心支撑钢框架动力试验研究[J].建筑钢结构进展,2025,27(5):57-67,11.基金项目
国家自然科学基金(51368037,51968044),甘肃省住房和城乡建设厅科研项目(JK2022-06) （51368037,51968044）
