圆形钢管混凝土柱框架典型节点受力性能分析

Analysis on Mechanical Performance of Typical Joints in Tubular Frame Structure

圆形钢管混凝土柱框架结构节点构造复杂,目前国内对其受力性能的研究较少。对于很多工程中应用到的节点,没有规范或规程可以作为其设计的依据,因此有必要对圆形钢管混凝土柱框架节点的受力性能进行深入研究。本文采用有限元软件ANSYS建立节点域精细化模型,进行节点受力性能的非线性有限元分析。结果表明,圆形钢管混凝土柱框架结构节点具有良好的承载能力,满足设计要求;加劲板能够有效改善支撑内力较大节点的受力性能。

The structures of the joints of the concrete filled tubular frame structure are complicated. So far, researches on the mechanical performance of certain types of joints are not enough and there is no specification or code which could address this issue. Thus, it is the necessity to study thoroughly the mechanical performance of the joints. In this study, finite element software ANSYS is introduced to conduct researches on the mechanical performances of the joints. Then the function and setting principles underpinning the stiffened plate are discussed. Results show that, the joints have good bearing capacity that can meet the requirements of the relevant provisions, and stiffened plates can effectively improve the mechanical performance of the joints.