The Nonlinear Finite Element Analysis to Bonded Post-Tensioned Prestressed Concrete Frame Based on Two-Stage Loading Model

摘要: According to the loading character of bonded post-tensioned prestressed concrete frame, static nonlinear finite programme in this paper could be used analysis whole process which is divided into two different stages . From stress-strain curve materials and considering concrete’ tension harding compression softening, uses layered element model arc-length method analyse during course it considers material nonlinearity geometric stiffness matrix. Through contrast experiment , result fits well with experiment. The can compute frame.