The Analysis And Design On Pre-stressing Force Without Cohesion Reinforced Concrete Slim Beam

On account of the restriction of layer thickness and demand for program design, as well as economics, artistry and application, a lot of slim beams are applied in the building engineering. More and more modern commercial building is in special favor of large bay and large column beam. Although ordinary beam can satisfy the demand for structure, but it make much dead weight on structure, the rigidity of common reinforced concrete slim beam is relatively low. In order to solve this problem, the pre-stressing force method is considered, utilizing inflected arch neutralizing amount of deflection. In this way slim beam may satisfy the demand for normal limit state in use. With rational linear and convenient construction, pre-stressing force concrete without cohesion is widely applied in the engineering of slim beam.Although simulated arch theory is brought forward long ago. It was only applied in the qualitative analysis in the early times, later some one carried out quantitative analysis, this theory had never work in the engineering practice. Furthermore there was much contest about the meaning of some parameter. In order to give these contests a define answer and make simulated arch theory applied in the calculation of pre-stressing force without cohesion reinforced concrete slim beam, a lot of works on mechanical analysis and associate it with typical examples (applyiny simulated arch theory in the analysis of pre-stressing force without cohesion and reinforced concrete) are carried and analyzed in finite element method in this paper. Analysis results is contrasted with those of the common calculating formations are defined, the meaning of physics parameter in the simulated arch theory, and the conclusion of applicable scope of pre-stressing force without cohesion reinforced concrete are determined.