建筑结构学报2017，Vol.38Issue(4)：18-27,10.DOI:10.14006/j.jzjgxb.2017.04.003
考虑加载制度影响的狗骨式连接钢框架子结构抗震性能试验研究
Experimental investigation on seismic behavior of steel frame substructure with RBS connections considering loading protocol
摘要
Abstract
To investigate the inquence of loading protocol on the deformability and cumulative energy dissipation capacity for steel frame with reduced beam section (RBS) connections,a total of five single span steel frame substructure with RBS connections were fabricated and tested under different loading protocols,including monotonic loading,equal displacement cyclic loading,standard loading and near-fault loading protocol.The test results show that all of the plastic hinges of these specimens occurr at the location of the reduced flange at steel beam ends,and the fracture failure of weld connected steel column and steel beam is avoided.The steel frame with RBS connection possesses full hysteretic curve,excellent deformability and energy dissipation.In addition,the loading protocol has significant influence on the inter-story lateral stiffness,the degradation of lateral load,ultimate deformability,and cumulative energy dissipation.Under the loading condition of equal displacement,the inter-story lateral stiffness and lateral loading capacity of steel frame with RBS connections degrade slowly with the decrease of loading displacement,but the inter-story cumulative ductility and the equivalent energy dissipation ratio show the increasing tendency.关键词
钢框架子结构/狗骨式连接/加载制度/拟静力试验/耗能能力Key words
steel frame substructure/reduced beam section connection/loading protocol/quasi-static test/energy dissipation分类
建筑与水利引用本文复制引用
孙国华,何源,顾强,蒋明,陶长发..考虑加载制度影响的狗骨式连接钢框架子结构抗震性能试验研究[J].建筑结构学报,2017,38(4):18-27,10.基金项目
国家自然科学基金项目(51578355),江苏省自然科学基金项目(BK20151200). （51578355）
