钢管混凝土柱-钢梁穿筋节点抗火分析  

ANALYSIS OF FIRE RESISTANCE OF JOINT OF STEEL BEAM TO CFST COLUMN WITH PENETRATION REBARS

作　　者：陈华伟[1] 殷福新[1] Chen Huawei Yin Fuxin .(School of Civil Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024

出　　处：《钢结构》2017年第2期105-109,共5页Steel Construction

摘　　要：采用ABAQUS分别建立3个方钢管混凝土柱以及6个钢管混凝土柱-钢梁穿筋节点的模型,分析了在温度作用、竖向荷载和水平荷载作用下荷载比、钢筋强度、含钢率、轴压比等参数对穿筋节点的影响规律。研究表明:荷载比、含钢率和轴压比对耐火极限和临界温度影响较大,钢筋强度几乎无影响。Computation models of three CFST columns and six joints of steel beam to CFST column with penetration rehars were modeled. Under the action of axial loads, the horizontal loads and thermal action, the influence rule of the load ratio, strength of steel, steel ratio, axial compression ratio on steel beam to CFST column with penetration rebars were analyzed. The results showed that load ratio, steel ratio and axial compression ratio had a significant effect on fire endurance and critical temperature, but the effect of the strength of rebar was negligible.

关 键 词：钢管混凝土结构 钢管混凝土柱-钢梁穿筋节点 耐火极限 荷载比 钢筋强度 含钢率 轴压比 

分 类 号：TU398.9[建筑科学—结构工程] TU352.5