方钢管混凝土柱-翼缘削弱型钢梁内隔板节点力学性能研究  

Reserch on Perforemance of Connections with Reduced Beam Section(RBS) to Square Concrete-filled Steel Tubular Column with Internal Diaphragm

作　　者：史艳莉[1,2] 黄秋秋[1] 王文达[1] 

机构地区：[1]兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州730050 [2]兰州大学土木工程与力学学院,甘肃兰州730000

出　　处：《工程抗震与加固改造》2013年第3期83-89,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金(51268038);甘肃省科技支撑计划项目(1204FKCA146)

摘　　要：翼缘削弱型节点可将塑性铰外移到梁端,从而有效地保护节点,避免发生脆性连接破坏。基于ABAUQS软件,参照目前钢框架节点的削弱参数取值,对方钢管混凝土柱-翼缘削弱型钢梁内隔板节点力学性能的影响进行了数值模拟,结果表明:合理选择相应的翼缘削弱参数,可在承载力降低不明显的情况下实现此类节点塑性铰外移,且位移延性有所提高。基于前述模型,对此类节点的翼缘削弱参数对其承载力和位移延性的影响进行了参数分析,最终建议了此类节点削弱深度的合理取值范围。The reduced beam section （RBS） connections can move the plastic hinge from joint panel to beam end, and protect the connection effectively to avoid the brittle failure connection mode. The composite joints with steel beam to square concrete-filled steel tubular （CFST） column with internal diaphragm were simulated using ABAQUS based on the weaken parameters of the RBS joints in steel structures. The results show that RBS joints with CFST column also can move the plastic hinge to beam end effctively and improve its displacement ductility under reasonable reduction parameters of the beam flange while the its ultimate strength didn＇ t decrease obviously. Parametric studies were performed to investigate the effect of the ultimate strength and displacement ductility of the joints under different reduction parameters based on the numerical model, and a rational range of the reduction depth for this type of joints were proposed.

关 键 词：翼缘削弱型节点 钢管混凝土柱 塑性铰 延性 削弱深度 

分 类 号：TU398.9[建筑科学—结构工程]