摘要
使用ANSYS分析软件建立了薄壁型钢-混凝土梁柱组合节点在ISO-834火灾升温曲线下的有限元理论分析模型,对薄壁型钢-混凝土梁柱节点弯矩-时间曲线和节点耐火时间进行参数化分析。研究结果表明,荷载水平的大小对组合节点的耐火极限具有很大影响;然而当荷载水平保持不变时,防火保护层厚度则是另一个对梁柱组合节点的耐火极限有显著影响的重要因素,而其它参数如材料特性、构件几何尺寸等对梁柱组合节点耐火极限影响很小。
This paper presents a numerical study on fire response of thin-walled steel-concrete beam-to-column connections under ISO-834 time-temperature curve. A finite element model on this beam-to-column connection was built using commercial software ANSYS,and critical factors influencing the fire resistance were studied,through evaluating moment-time curves and fire resistance of the connection. Results from finite element analysis indicate that load ratio and thickness of insulation cover significantly influence the fire resistance of thin-walled steel-concrete beam-to-column connections. However,material properties and dimensions of the connection only have minor influence on the fire resistance of this type of connection.
出处
《建筑钢结构进展》
北大核心
2013年第4期35-40,共6页
Progress in Steel Building Structures
基金
福建省科技计划重点项目(2006H0030)
关键词
薄壁型钢-混凝土结构
梁柱节点
抗火性能
有限元分析
thin-walled steel-concrete structure
beam-to-column connection
fire resistance performance
finite element analysis
