Experimental Study And Theoretical Of Unbonded And Bonded Mixed Prestressed Hollow Board And Beam Architecture

Unbonded and bonded hybrid system of reinforcement of prestressed concrete hollow plate beam structure (hereinafter referred to as the beam structure system of UPH prestressed hollow plate girder structure) from the hollow floor, the original hollow floor with a vertical prestressed reinforced unbonded prestressed tendons and the beam are connected into a whole, then pour in slab and beam slab after the plate beam to form a whole structural system. Beam structure system of UPH prestressed hollow plate beam structure is a new type of floor structure system in our country at present, the studies on the floor is less, its mechanical characteristics and failure modes are not very clear, this theoretical analysis of failure of bearing capacity and failure form of ultimate bearing capacity, the floor system through practical experiments as follows:(1) on the UPH system of hybrid reinforced prestressed hollow plate beam structure are introduced, the background, purpose, method and content of domestic and foreign research background and development and this paper has made the simple statement.(2) the beam structure system UPH prestressed hollow plate beam structure is designed, the components of the material selection and the loading and lifting force calculation, and the actual operation of post tensioning are described.(3) using the method of static loading on the girder structure system of UPH prestressed hollow plate girder structure of the load test in the test that the structural damage limit bearing capacity and bearing capacity, failure mode.(4) in the theory of structure system of UPH hybrid reinforced prestressed hollow plate beam analysis theory to calculate the damage capacity and failure modes of ultimate bearing capacity, the structure of the system, and make a simple comparison and the actual test data, the data of the two groups because the test error is different, but in line with error range.(5) using ABAQUS finite element analysis software carries on the analysis to the UPH mixed reinforcement of prestressed hollow plate girder structure cracking stage, analyzed the cracking stage of the structure in consideration of concrete and steel are not mutually role based on, through the finite element software ABAQUS established three dimensional model, the model is consistent with the test load simulation, analysis the UPH mixed reinforcement of prestressed hollow plate girder structure in the cracking load by the stress distribution and deformation, and the test results were compared and analyzed. Experimental verification of rationality.(6) the relevant conclusions of UPH prestressed precast slab in this study are presented, and the shortcomings of this research are briefly discussed.