Investigate the Seismic Performance of CFDST Columns with Prism Geometry

In this paper, we investigate the seismic performance of concrete dome filled concrete columns with prism geometry. For this purpose, a number of pillars with a square core, rhomboid, circular, and prism external geometry with a square cross-section that was raised with a 2.5 degree gradient from above up was made. All columns were loaded under the ATC-24 loading protocol and loaded until the rupture of the column continued. The results show that despite the collapse of the columns with the inner section of the square and the rhizosphere, the columns with the inner section of the circle have less damaging effects and rupture more than the columns with the internal section of the square and the rhombus. Also, the rupture pattern of the pillars after 20 cycles has been expanded in diameter belts with a 45 degree angle. The initial hardness and coefficient of ductility of the columns with the interior of the rhizome is about 2 times greater than the other columns. Another point is that due to the softer breakdown of the column with the inner section of the circle than the other columns, its energy loss has not suddenly been.