【作者】 霍静思； 韩林海；

【Author】 HUO Jing-si HAN Lin-hai (College of Civil Engineering & Architecture,Fuzhou University,Fuzhou 350002,China)

【机构】 福州大学土木建筑工程学院；

【摘要】 利用标准火灾作用后钢管混凝土柱-钢梁节点在恒定轴力和往复水平荷载作用下力学性能的非线性有限元分析模型,在分析方法得到试验结果验证的基础上,对影响火灾后钢管混凝土节点水平荷载-位移关系曲线的因素,如受火时间、柱截面尺寸、含钢率和长细比、轴压比、梁柱线刚度比和弯矩比等因素进行了分析,得到了影响其火灾后荷载-位移关系的主要因素.更多还原

【Abstract】 A nonlinear finite element model is used to calculate the load versus deformation relations of steel beam to concrete-filled steel tubular column connections after exposure to standard fire under combined con- stant axial load and cyclically increasing flexural load.Based on the theoretical model verified by tested re- sults,the influences of the fire duration time,sectional dimension,slenderness ratio,steel ratio,beam-col- umn stiffness ratio,beam-column moment ratio,axial load level on the load versus deformation relation of this type connection after exposure to fire are discussed.更多还原