Experimental Research On Inclined Section Capacity Of Rc Beams Strengthened With High Strength Steel Wire Mesh And Polymer Mortar

A new strengthening technology with high strength steel wire mesh and polymer mortar has been gradually used in the field of reinforcement to reinforce concrete in recent years, which includes features of high-strength, fire-resistance, easy construction and,wide range of applications, etc compared with the traditional Carbon Fiber and Sticking Steel Plate reinforcement technique.The reinforcement method is based on the stress main body of reinforcement material with high strength steel wire mesh and the cementing material of reinforcement material with polymer mortar,It causes reinforcing layer and original component be in harmony by the force.This dissertation focuses on the systemic experiments and theoretical analysis on strengthening reinforced concrete beams with high strength steel wire mesh and polymer mortar. The main research content and achievements can be summed up in the following aspects:This paper has conducted a pilot study about shear strength in RC beams with high strength steel wire mesh and polymer mortar, including 2 control specimen without strengthening, 2 U-shape strengthening reinforced concrete beams with polymer mortar and 4 U-shape strengthening reinforced concrete beams with high strength steel wire mesh and polymer mortar, Influencing factors include the spacing of high strength steel wire mesh and shear-span ratio, at the same time discussed the contribution of polymer mortar. Strengthening beams of shearing limit, crack developing situation, strain,displacement changes and shear capacity of inclined section factors(include spacing and shear-span ratio) are discussed, The experimental results indicate that the carrying capacity of beam which used the new material increased 32.35%-48.79%and certain shear stiffness is used to reinforcement,at the same time, the beam reinforced suppress the appearance and expansion of the crack.On the bases of experimental research, apply the truss-arch model theory and shear mechanism of beams with high strength steel wire mesh and polymer mortar, the formular applying to the calculation of shear strength of RC beams with high strength steel wire mesh and polymer mortar is advanced,comparison shows good agreement with the experimental formula, which could be provided reference for actual projects.Proxided deflection formula calculation of the experimental, comparison shows good agreement with the experimental formula.At the same time,summarize currently specimen of shear strength in RC beams with the method,given simple and practical formula of shear capacity, in the project permits scope comparison shows small error agreement with the experimental formula. Fnally,apply the simple and practical formula of shear capacity to the actual project,become the reference calculation of the actual project...