Prestressed Concrete T Beam Capcity Of Lack Anaysis Of Reinforcement

External pre-stressed concrete structure, which belongs to one branch of unbounded pre-tensioned pre-stressed concrete structure, is the pre-stressing structure system loaded axial pre-stressing force by the external pre-stressed bundles outside of concrete element cross section. External pre-stressed structure system is different in traditional interior unbounded Pre-stressed structure, the interior unbounded pre-stressed steel is arranged in passageway reserved inside the structure. Although on each section the strain of the pre-stressed and the concrete is uncoordinated, But the relative position of the pre-stressed steel on the section is invariable, along the direction of the beam length.It has nothing to do with the deflection of the component. But in exothermal pre-stressed structure system the place of the changes block and anchor relative to the section of concrete beam is invariable, In other position the section eccentricity moment of pre-stressing is changes with the variety of the component, From this it has in external per-stressed effects.This thesis mainly analyses general finite element software to research to external pre-stressed structure, and get some conclusion:Analysis the stress performance of the externally pre-stressed concrete simple beam at the ultimate situation.Analyze the influence to beam behavior and the ultimate bearing capacity making use of large-scale finite element software-ANSYS when the externally pre-stressed concrete simply supported beam is with different deviators, different effective height, different effective preload stress, different section of external cables, and ultimate strength of concrete.Deducing usage formula on designing and calculating of externally pre-stressed concrete structure strengthening, according to the previous relative studying results at home and abroad. The article also and the reinforcement train-bridge coupling analysis.And finally, deriving some conclusions and prospects based on this dissertation, and advising some problems which need more and further in depth investigating and discussing.