Behavior of Reinforced Concrete Plates under Pure Torsion

Abstract

The behavior of reinforced concrete members under torsional loading hasinterested many researchers during the last decades. These researches focusedmainly on the response of reinforced concrete beams at different reinforcementconditions and the size effects. On the other hand, the behavior of concrete platesor slabs has not been investigated clearly under pure and/or combined torsionalloading. In the present study, nine reinforced concrete plates were prepared andtested under pure torsion. Effect of steel reinforcement ratio and size change wasstudied and they have a great effect on the plated strength, capacity, stiffness andductility. As stated by torsion theories of reinforced concrete beams, the torsionalstrength of slabs was upgraded also with increasing in cross section andtransverse reinforcement ratio