Comparative Research On Behavior Of Reinforced Concrete Shear Wall Strengthened With Different Dypes Of Sheet

Carbon fiber sheet and basalt fiber sheet are two efficient, economy and construction simple reinforcement material with excellent mechanical properties, at present of two kinds of fibers has been widely used in concrete structure reinforcement engineering. Domestic and overseas scholars and technical staffs have done a large number of experimental research and actual engineering strengthening application, and get fruitful achievements and construction experience. But so far, mostly research is to use fiber sheet reinforced concrete beam, plate or columns component, or research reinforced concrete reinforced the static and dynamic performance. Comparative study for the two kinds of fiber sheet reinforced concrete shear walls is relatively few. Based on carbon fiber sheet and basalt sheet steel reinforced concrete wall in low cyclic loading experiment research, the two types of fiber sheet of reinforced concrete shear wall reinforcement effect and analyzed, get the following main research results:1. By analyzing the cyclic reverse load of shear walls, to research the influence of strengthened with two kinds of fiber sheet on the occur and developing process of the crack, steel strain, and the common force of fiber sheet and shear wall, and the carbon fiber sheet and basalt sheet role during are analyzed.2. The reinforcement method of replacement damaged concrete and fiber sheet joint strengthening method can exceed the normal section carrying capacity of original shear wall. Two kinds of fiber sheet to shear wall is basically the same section bearing capacity increase degree when they was pasted a layer and layer fiber sheet. On the comparison for two kinds of fiber sheet it was found that the recovery degree was high where basalt was used to paste and reinforce shear wall in a layer or three floors. When paste three layer fiber sheet, carbon fiber sheet of shear wall can improve the bearing capacity of normal section 115% than basalt fiber sheet, improve large degree.3. The paper analyzed the influence of shear wall's seismic performance on using two kinds of fiber sheet to strengthen. Through the study of the hysteretic curve of loads and horizontal displacement dates, skeleton curve, ductility coefficient and energy dissipation capacity to discuss the effect on the ductility, ability of dissipation energy and stiffness of the post strengthened shear wall used the two kinds of materials. The results showed that When paste one layer, carbon fiber reinforced shear wall raised to 133%, obviously higher than basalt fiber. When paste two layer, basalt fiber reinforced ductile shear wall is raised to 145 %, higher than carbon fiber (115%). When paste three layer, the shear wall ductility reinforced with carbon fiber raised to 134%, is same to basalt fiber. Along with the increase of layers of reinforcement, basalt sheet shear wall is highlighted the dissipative performance than carbon fiber reinforced shear wall, the stronger dissipative performance.