型钢翼缘狗骨式削弱在型钢混凝土节点的作用  

The effect of dog-bone style weakened flanges of shaped steel on SRC joints

作　　者：张雪松[1,2] 李海涛[3] 张铁蓉[4] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]中国电力科学研究院,北京100055 [3]浙江水利水电高等专科学校土木工程系,杭州310018 [4]河北省张家口煤气公司,河北省张家口075000

出　　处：《哈尔滨工业大学学报》2009年第12期110-114,共5页Journal of Harbin Institute of Technology

基　　金：国家杰出青年科学基金资助项目(50425824)

摘　　要：为了防止地震时型钢混凝土节点核心区发生剪切破坏以及梁柱连接焊缝发生脆性断裂,提出对型钢混凝土节点核心区附近梁端型钢的上、下翼缘采取狗骨式削弱,并系统研究翼缘削弱对提高型钢混凝土节点抗震性能的作用.研究表明,由于在梁端型钢翼缘采取狗骨式削弱,不仅能够将塑性铰控制在梁型钢削弱的位置,从而有效地降低了节点核心区所受的剪力以及梁柱连接焊缝的应力;而且能够改善节点塑性铰区的转动能力和抗剪性能,提高节点的延性和耗能能力.To prevent the shear failure of the joint cores and the brittle fracture of the welded seams of the beam-column connections of the steel reinforced concrete(SRC) joints during earthquake,the dog-bone style weakening of the upper and below flanges of the H-type steel of the beam near the joint cores of the SRC joint is employed,and the effect of the weakening of flanges of the steel on improving the seismic behavior of the SRC joint is systematically investigated.The results indicate that because the dog-bon...

关 键 词：型钢混凝土 节点 抗震性能 狗骨式削弱 塑性铰 

分 类 号：TU398.9[建筑科学—结构工程]