新型钢管混凝土节点刚性的规律研究

Research on the rigidity of new type joint of concrete-filled steel tubular

对一种新型钢管混凝土节点刚度对框架性能的影响进行了探讨,建立其节点的弯矩-转角计算模型,通过与有限元实体模型计算结果对比表明:弹性阶段模型计算的结构和公式计算得到的结果符合较好;在塑性阶段,拟合公式计算得到转角要比模型计算的结果小,相关成果可供工程设计参考。

In this paper,mend a new type of concrete-filled steel tubular joints and discuss the impact of restraining stiffiness of joints in the performance of structure.A general bending moment-corner formula of the connection is sum up.Compared with the results of finite element solid model calculation,it is shown that the results of model calculation in elastic stage are in good agreement with the structure calculated by formula;in the plastic stage,the corner calculated by the fitting formula is smaller than that calculated by the model,and the relevant results can be used for reference in engineering design.