A master’s thesis at the College of Engineering at the University of Basrah discussed the evaluation of the resistance of thin iron pipes filled with concrete under the influence of central pressure loads.
The thesis presented by the student Mustafa Attia Rasan dealt with the effect of a group of parameters on the maximum resistance of the columns, such as the compressive strength of concrete, the yield stress of iron, the percentage of thinness, the shape of the cross-section of the column (circular and square) and the ratio of diameter to thickness, as well as the effect of the length of the column on the maximum resistance.
The model of damaged concrete was adopted, while the iron was considered to be fully plastic and elastic.
The thesis aims to evaluate the maximum strength and conduct of thin steel columns filled with concrete for 240 models.
The thesis concluded that the increase in concrete resistance leads to an increase in the bearing capacity of the columns and at the same time causes a decrease in the ductility of the column. Increasing the yield stress of steel leads to an increase in the bearing capacity of the shaft as well as a decrease in ductility.
