摘要
为研究钢梁-圆钢管混凝土柱穿心连接的抗震性能,进行了3个大尺寸钢梁根部翼缘不处理的标准型、翼缘削弱型及翼缘扩大型节点试件的拟静力试验。试验结果表明:试件的破坏形态为钢梁根部坡口焊缝与钢管之间开裂,钢梁端部翼缘局部屈曲;钢梁悬臂端的极限位移角达0.04左右;钢梁固端弯矩-悬臂端转角滞回曲线饱满;翼缘削弱型试件的极限承载力为标准型试件的78%。建议在抗震设计的建筑工程中,钢梁-圆钢管混凝土柱可采用梁端部翼缘不处理的标准型穿心连接。
To study seismic behavior of through beam connections of steel beams to circular concrete-filled steel tube columns,quasi-static test of three large-scale joint specimens with different steel beam flange were conducted.The test results indicate that： the failure modes of specimens are fracturing between the groove welds at the end of beam flange and the steel tube,and are local buckling of beam flanges;for all three specimens,the ultimate rotation at the cantilever end of steel beam reaches 0.04;the hysteretic loops of the steel beam fixed end moment-cantilever end rotation are plump;the ultimate load-carrying capacity of the flange weakened type specimen is 78% of that of the standard type specimen.It is recommended to use the standard type through beam connections of steel beams to circular concrete-filled steel tube columns in the practice engineering projects.
出处
《建筑结构》
CSCD
北大核心
2013年第12期57-61,共5页
Building Structure
基金
北京市科技计划重点项目(D09050600370000)
北京市教委科技计划重点项目(KZ200910005008)
关键词
钢梁
圆钢管混凝土柱
梁柱穿心连接
抗震性能
拟静力试验
steel beam
circular concrete-filled steel tube column
through beam connection of beam to column
seismic behavior
quasi-static test
