现场施工完全无焊接钢管混凝土节点抗震性能研究——理论分析  

SEISMIC BEHAVIOR OF CFST COLUMN TO BEAM JOINT WITHOUT WELDING IN CONSTRUCTION FIELD:THEORETICAL STUDY

作　　者：查晓雄[1,2] 于航[1,2] 

机构地区：[1]哈尔滨工业大学深圳研究生院土木与环境工程学科部,广东深圳518055 [2]哈尔滨工业大学深圳研究生院结构与岩土工程中心,广东深圳518055

出　　处：《工业建筑》2011年第6期20-24,8,共6页Industrial Construction

摘　　要：通过分析无焊接钢筋混凝土梁-钢管混凝土柱节点的受力特点以及失效模式,提出了三段式骨架曲线理论模型。对于弹性阶段,通过求解刚度矩阵方法获得节点骨架曲线的初始刚度;对于完全塑性阶段以及强度退化阶段,采用极限平衡方法获得节点的极限强度以及下降段刚度。为了进一步验证骨架曲线模型的正确性,将理论计算结果与有限元分析结果进行对比,说明三段式骨架曲线模型可以较好地描述节点的受力特性及承载能力变化趋势。By means of analyzing the mechanical characteristics and failure model of RC beam to CFST column joint without welding,a three-stage skeleton curve model is presented.In the elastic stage,the initial stiffness is evaluated by solving the stiffness matrix.In the perfect plastic stage and strength degradation stage,the ultimate strength and the degradation stiffness of the joint can be obtained with the limit equilibrium method.In order to verify the theoretical model presented above,finite element analysis results are compared with the theoretical results.It is suggested that the three-stage skeleton curve model can be used to depict the mechanical behavior of this new type of joint.

关 键 词：钢管混凝土梁柱节点 抗震性能 骨架曲线 钢筋混凝土梁 理论模型 

分 类 号：TU398.9[建筑科学—结构工程]