Research On Axial Compression Performance Of Concrete Column Strengthened By Prestressed Steel Belt Reinforced

For the current domestic reinforced concrete structure, usually due to design changeor the change of the building use function, which resulted in increased structure stressand deformation, need to the shortcomings of axial compression ratio of frame columnfor reinforcement. Prestressed steel belt packaging reinforcement as a practicalinnovative reinforcement technology, which can effectively increase the axialcompression bearing capacity of reinforced concrete columns, and the construction issimple and convenient, and the cost is low, so it has a good application prospect in thepractical engineering.This article through to nine pillar of prestressed steel strip packing reinforcedconcrete research, contrast ordinary reinforced concrete column, launched underthe condition of different reinforcement (space between steel belt, steel belt layer)the damage form of reinforced concrete column, the axial compression bearing capacityand steel belt and so on the analysis of the stress and strain development. The test resultshow that the use of concrete column strengthened with prestressed steel axialcompression bearing capacity significantly higher than the ordinary reinforcedconcrete column, and its deformation ability enhancement, test shows the effects ofsteel strip spacing on the most significant.According to the test process and some of the literature reading, the system of prestressed steel belt packaging reinforcement was studied under the working mechanism ofreinforced concrete column. On the basis of theoretical research, this paper combinedwith the test data of the prestressed steel reinforced concrete column strengthened withpackaging axial compression bearing capacity formula derivation, results are in goodagreement with the test results show that the formula, to calculate the axialcompression bearing capacity of structure. Through the practical application of the reinforcement engineering, the axialcompression ratio of transfinite identity of pack with prestressed reinforced concretecolumn, makes the pillars of the upper limit value of axial compression ratio doesnot meet specification can continue to use. And comparison of the seismic method andenlarging section method, the results show that prestressed steel belt packagingmethod is the most effective, and low cost, the construction is simple and suitablefor both the engineering reinforcement theory, for the future further research andprovide theoretical and practical reference for practical engineering application.Through the practical application of the reinforcement engineering, the axialcompression ratio of transfinite identity of pack with prestressed reinforcedconcrete column, makes the pillars of the upper limit value of axial compressionratio does not meet specification can continue to use. And comparison of theseismic method and enlarging section method, the results show that prestressedsteel belt packaging method is the most effective, and low cost, the construction issimple and suitable for both the engineering reinforcement theory, for the future furtherresearch and provide theoretical and practical reference for practical engineeringapplication.