MECHANICAL ANALYSIS ON THE COVER THICKNESS OF STEEL REINFORCED RECYCLED CONCRETE COLUMN

According to the damage characteristics of steel reinforced recycled concrete columns and the material properties of recycled concrete, by means of the elastoplastic theory of a plate, the minimum cover thickness at which the instability does not occur in the compression zone of a steel reinforced recycled concrete column was theoretically analyzed in this paper. Meanwhile, from the view of recycled concrete cover cracking, according to the force diffusion theory and a tensile damage model, the calculation method of cracking cover thickness for a steel reinforced recycled concrete column was analyzed. It is shown that the cover thickness of a steel reinforced recycled concrete column is dependent on the recycled concrete strength grades, column high of steel reinforced recycled concrete, steel flange width, replacement rate of recycled aggregate.