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以实际工程为背景,针对预应力混凝土梁CFRP加固的抗弯受力性能进行了研究。研究中运用了基于材料非线性本构关系的有限元分析及参照现有加固规范的计算分析,并对不同的分析结果进行了比较。经分析对比,参照规范得出计算结果具有足够的安全余量,可用于实际工程的设计计算,但此方法对预应力梁的裂缝、挠度等特性无法描述,需要进一步研究。
Based on the actual engineering background, the flexural behavior of CFRP reinforced prestressed concrete beams is studied. In the study, the finite element analysis based on the nonlinear constitutive relationship of materials and the calculation and analysis based on the existing reinforcement code were used, and the results of different analyzes were compared. According to the analysis and comparison, the calculation results obtained with reference to the standard have sufficient safety margin, which can be used in the design and calculation of the actual project. However, this method can not describe the characteristics of the prestressed girder such as the crack and deflection, which needs further study.