A STUDY ON HYSTERETIC BEHAVIOR OF A PARTIALLY BONDED PRESTRESSED CONCRETE RIGID FRAME UNDER LATERAL LOADING

The finite element analysis is developed in order to estimate the hysteretic behavior of prestressed concrete structures in partially bonded condition under cyclic loading considering non-linear stress-strain relation of concrete and steel. The method is applied to the bonded and unbonded prestressed concrete beams and rigid framed structures composed of precast concrete members and connected by prestressing steel, and the deformations and the angle of rotation observed in the experiment are compared with the calculated values. The mathematical model to express the rotation at jointed corner and the effects of initial prestress and bonded condition to the hysteretic behavior under cyclic loading are discussed.