Finite Element Analysis Based On The Mechanical Property Experiment Of Entelligent GFRP Reinforced Concrete Beam

Deterioration of reinforced concrete structures has become a serious problem in last decades, this situation in due mainly to corrosion of reinforcing bars embedded in concrete. A long-term and effective way to solve this problem is to use Fiber Reinforced Polymer (FRP) reinforcing bars for alternative. Since 1970s, many researches have been conducted on FRP reinforced concrete structure, however, limited investigations have been carried out in our country. In this situation, it is very meaningful to study design theories and methods of FRP reinforced concrete structures.Based on Smart GFRP reinforced concrete beams, theoretical analysis of test results; Finite element analysis using ANSYS software, GFRP reinforced concrete beam specimen of the mechanical properties of finite element analysis, compared with the experimental results show that the established finite element model capable of simulating FRP mechanical properties of reinforced concrete beams On this basis, the completion of the CFRP reinforced concrete beams with nonlinear finite element analysis; Using mathematical statistical methods, given the FRP reinforced concrete beam section length of the lever arm coefficient and FRP reinforced concrete beam section was subject to stretching of the stress formula, and compared with other methods, the results show that the proposed method is more accurate and reliable ; Combined load effect given under the standard formula for calculating maximum crack width, reference the existing test data and comparison with other calculation methods, the results show that the more accurate formula for calculating the reasonable and feasible.