基于ANSYS分析的装配式PC箱梁碳纤维布加固抗弯性能研究

Research on Bending Resistance of Assembled PC Box Girder Reinforced with CFRP Cloth Based on ANSYS Analysis

为研究碳纤维布对装配式PC箱梁加固后的抗弯性能,利用ANSYS有限元程序建立了7片装配式PC箱梁空间实体模型,在不同工况下对梁的试验加载过程进行非线性有限元模拟仿真,分析了箱梁的特征荷载、挠度曲线及碳纤维布应变。结果表明:粘贴碳纤维布可以有效提高装配式PC箱梁抗弯性能及加固效果,经济性更高。

In order to study the bending resistance of assembled PC box girder reinforced with CFRP cloth, spatial entity models of 7 pieces of PC box girders were built by the finite element software ANSYS. Non-linear finite element simulation of box girders＇ loading process was conducted under different working conditions, and the characteristic load, deflection curve and strain of CFRP cloth of box girders were analyzed. The results show that the bending resistance and reinforcement effect can be effectively improved by sticking CFRP cloth to assembled PC box girders.