Mechanical Behaviors Analysis Of UPPC Special Type Slab Bridge

In prestressed concrete simply supported girder bridge structural systems,post-tensioned prestressed concrete hollow slab beams are commonly used form of structure,and one of the unbonded prestressed concrete wide plate girder as a new type of structure has been applied to start the bridge project,because of its many advantages,has been more and more widely used in other structural forms of buildings.Introduce the article of unbonded prestressed concrete structure at home and abroad to develop an overview of the finite element method outlined the basic calculation steps to determine the material constitutive relation,strengthening model,crack model and non-linear calculation method.In this paper,unbonded prestressed concrete Special type slab bridge test data,using finite element analysis software ANSYS has been set up of unbonded prestressed concrete Special type slab bridge finite element model,the calculation results with a comparative analysis of test results,verify the finite element model is correct.Shaped through the whole process of slab type simulation analysis,which has been shaped slab bridge are subject to high stress along the beam changes and an analysis of the deflection,the stress of unbonded prestressed reinforced incremental,horizontal displacement,the cracks increase with the load changes situation,but also to have bonded and unbonded Special type slab bridge carrying capacity compared and analyzed.Special type slab bridge at the end,pre-Afterburning pallets pass through the anchor,as well as give concrete,resulting in the anchor under the concrete to bear a great deal of local stress.In this paper,special-shaped plate bridge client set up finite element model,an analysis of tensioned tendons at stage,the end of the anchorage zone stress distribution.