方钢管钢骨混凝土柱与钢梁端板螺栓连接节点弯矩转角曲线计算  

Calculation of moment-rotation curve of steel-reinforced concrete square column and steel beam joint with bolted end-plate

作　　者：黄频[1] 何益斌[2] 郭健[1,2] 何旷[1] 周海兵[2,3] 罗诚[1] 

机构地区：[1]湖南大学设计研究院有限公司,湖南长沙410082 [2]湖南大学土木工程学院,湖南长沙410082 [3]湖南省建筑工程集团,湖南长沙410004

出　　处：《中南大学学报（自然科学版）》2013年第10期4273-4280,共8页Journal of Central South University:Science and Technology

基　　金：长江学者和创新团队发展计划项目(IRT0917)

摘　　要：将端板螺栓连接钢混凝土组合节点的转角分解为节点域变形和连接组件变形2部分,后者又可分解为端板的受弯变形和螺栓的伸长变形。通过分别计算弯矩节点域剪切转角曲线、弯矩端板转角曲线和弯矩螺栓伸长转角曲线,基于叠加原理将上述曲线在特征点处的转角进行叠加便可计算得到节点弯矩转角全过程简化计算曲线。研究结果表明:由该方法计算得到的简化曲线与试验曲线较吻合,尤其是初始阶段具有很高的精度,能够满足结构设计的要求;该方法计算简单,可操作性强,方便于实际工程应用,可为制定相关规范和规程提供参考。The rotation of end-plate connections for composite steel and concrete structures was divieded into two parts, one is shear deformation of joint, the other is deformation of the connected component,and the later was decomposed into the bending deformation of end-plate and elongation transforrnaton of the high strength bolt. By calculating the moment-shear deformation curve, moment-end-plate rotation curve and moment-bolt rotation curve respectively, the total moment-rotation curve was obtained by adding individual responses based on superposition principle. The results show that the theoretical calculation curve is in good agreement with that of the experiment. The method can calculate the moment-rotation precisely in the range of initial stage and completely satisfies the structural design requirements. The calculation procedure is simple and more efficient for engineering applications, and provides reference to related specifications and codes.

关 键 词：端板连接 弯矩转角曲线 叠加原理 初始转动刚度 

分 类 号：TU398.9[建筑科学—结构工程]