| Title |
Elasto-Plastic Behavior of Three-Story Concrete Filled Steel Tubular Frames |
| Authors |
Chung. Jin-An ; Choi. Sung-Mo |
| Keywords |
Concrete Filled Steel Tubular Frame ; Steel Bearing Wall ; Vertical Stiffener Type Connection |
| Abstract |
Three stories and one span concrete filled steel tubular frames were tested under the constant axial load and alternately cyclic horizontal loads in order to investigate the seismic performance of multi story CFT frames. The effects of the main experimental parameters which were the two column type (vacant column, CFT column), the two beam-to- column connections (external diaphragm connection type and vertical stiffener connection type) and the two steel shear walls type are discussed on the elastic- plastic behavior of CFT frames. These results showed that 1st story column of CFT frames had large ductile, whereas that of vacant steel tube frame were observed local buckling at column top and bottom and the frame strength decreased rapidly. In addition, it was verified that the vertical stiffener connections had good structural performance and steel shear wall was an effective device to improve strength and stiffness. |