预应力碳纤维布加固混凝土梁有限元分析

利用碳纤维布(CFRP)加固钢筋混凝土构件是一种先进的工程加固技术,已经在土木工程中得到了较为广泛的应用。本文应用ANSYS软件对碳纤维加固预应力和非预应力梁体受弯进行仿真,来分析和研究碳纤维加固混凝土梁的受力机理和加固效果,并给出了相应的荷载挠度曲线。结果表明应用预应力碳纤维的梁体明显优于普通碳纤维布加固的受损梁,不仅提高了结构各阶段的承载力而且降低了梁破坏时的挠度。

Finite element analysis of prestressed CFRP reinforced concrete beams

The use of carbon fiber sheet (CFRP) to strengthen reinforced concrete members is an advanced engineering strengthening technology, which has been widely used in civil engineering. In this paper, ANSYS software is used to simulate the bending of prestressed and non-prestressed beams reinforced by carbon fiber to analyze and study the mechanical mechanism and reinforcement effect of carbon fiber reinforced concrete beams, and the corresponding load deflection curve is given. The results show that the beams reinforced with prestressed carbon fiber are obviously superior to the damaged beams reinforced with ordinary carbon fiber cloth, which not only improves the bearing capacity of the structures at various stages, but also reduces the deflection of the beams during failure.