Study On Non-linear Numeric Analysis Of FRP Strengthened Flexural Concrete Member

The technology of Fiber-Reinforced Polymers strengthening concrete structures is a hotspot of research and exploiture in civil engineering fields home and abroad. Which is widely used recently as it presents a high strength-to-weight ratio, excellent economic benefits, high durability in corrosive atmosphere and it can be constructed rapidly and easily, doesn't increase structure sizes nearly. Research on FRP reinforcing flexural concrete member is focused on experiments and theoretic analysis, however computer emulational analysis should be made more efforts. First, this paper introduces the development of structure reinforcement and research status quo in FRP strengthening flexural concrete member, and summarizes the material performance of FRP and adhesive resins systemically. Based on non-linear numeric analysis theory and modeling technology, nine R.C beams are analyzed in carrying capacity and the load-displacement curves are put out. The numeric results are compared with experimental data, which shows the modeling method is availably and the outcome is reliable accordingly. From the outcome, it can be concluded that GFRP reinforcing concrete shows good ductibility. Finally, flexural capacity computing program of FRP-Reinforced structures is putout based on structure reinforcing theory and correlative rules, which makes functions blocking. The program is legible and convenient to be updated. It can give safe and reliable results.