Analysis Of Theory And Numerical Simulation On Prestressed Concrete Structure With Bond By Post-tensionging

Due to the diversification of structure form and appearing of the high strength steel and the high strength(the high performance) concrete,the application of the prestressed concrete is becoming more and more widely.Prestressed concrete can satisfy the modern building continuously to develop in the direction of large span, light, high performance requirements.In this article,a bonded post-tensioned prestressed concrete structure which is in Fuxin city planning and natural history museum is taken to research object, and the research is about theory and numerical simulation analysis.The loss of prestress monitoring and deflection measurement of the actual data is taken as the basis of theory and numerical simulation analysis.This article mainly completed the following several aspects:First of all,analyse the prestressed concrete beams in theory, including the mechanical characteristics of prestressed concrete beam, the loss of prestress in prestressed concrete beam, the calculating of the bearing capacity of normal section of the prestressed concrete beam, the prestressed concrete beam camber calculation during the construction and prestressed concrete beam crack calculation.Then, bonded post-tensioned prestressed concrete structure finite element model in Fuxin city planning and natural history museum is esTab.Iished.Considering the beam-column stiffness influence each other,during the construction,prestressed concrete beam camber calculation and analysis analysis of vertical deformation of support system are to be done.Reliability of the finite element model is analysed, as a foundation for the later analysis by contrasting numerical simulation results and monitoring data.Bonded post-tensioned prestressed concrete structure construction quality is also tested.In the end,the numerical simulation prediction and analysis about bonded post-tensioned prestressed concrete structure in normal use stage is done.They include prestressed concrete beam’s bearing capacity,deflection,crack and deformation calculation analysis of the vertical support system which are in the design load and forecasting load of bonded post-tensioned prestressed concrete structure.