Finite Element Analysis of Prestressed Concrete Wide-flat Beam Frame inner Joint

Based on finite element analysis, we investigated four joints of prestressed concrete flat-beam frame inner joint considering prestress tendon wearing column or not. Moreover, the changing of the tensile strain of concrete and the tensile stress of stirrups in the core were also analyzed. The results show that prestress can improve the shear strength of concrete joint in the core, but the location of prestressing tendon have a little influence on the shear strength of joint.