CFT기둥 접합부의 거동특성

초록

Concrete Filled Tube(Concrete Filled Steel Tube, CFT) has been known as a structural system with various capabilities such as its superior structural performance, construction performance, fire resistance, and economics. However, only few study and real construction cases regarding connection of the CFT have been done in Korea. Therefore, this study as an initial step has been conducted to understand the behavioral characteristics , stress contour, initial stiffness and strength of diaphragm that connected flange of a beam that connected by the CFT column. In its final analysis, this study worked to propose optimized model and investigate connection stability. Four type models have been selected using variables that diaphragm passes through the CFT column. For this, ABAQUS in general used has been utilized analytical modeling of a 3D nonlinear finite element analysis.