The Working Mechanism Of The RC Structure Strengthened With FRP Anchors

Concrete is widely used in the world, dating back over nearly two hundred years ofhistory, after the founding of our country, the construction of concrete works have sixty yearsof history. Although the durability of concrete is very good, but when use the structure due tothe combined effects of various factors which suffered varying degrees of damage, so that allaspects of performance to varying degrees of decline. According to statistics, China now hasabout50%of the houses have been entered in old age, and about2.5billion square meters ofbuilding have construction quality problems or accident risks, and they need for identification,repair and reinforcement. Therefore, various reinforcement methods consequential.Compared with other methods of reinforcement, externally bonded fiber cloth methodrelative to other methods with unparalleled advantages construction is simple, and does notaffect the appearance and performance of the original structure of the reinforcement, practicalstronger, but this reinforcement approach prone to peeling fabric, resulting in strength fibercloth can not give full play to significantly reduce the reinforcing effect. In recent years, toprevent and delay the onset of stripping phenomenon has become a focus in the study ofinternational scholars, relative to other methods, FRP anchor anchor method showed a clearadvantage. But most of the existing research on FRP anchor pullout tests conducted to studythe structure of RC flexural peel rarely applied, therefore, this paper intends to use the finiteelement simulations study delay and prevent the RC structure stripped fiber sheet methods.Specific studies are as follows: First, this paper introduces the reinforcement of existingtechnology at home and abroad, as well as peeling for FRP sheet, using the advantages ofFRP anchors achor; secondly, detailing the bonded FRP sheets and concrete substratesbetween mechanism, detailed analysis of the reasons for separation occurs; then, the finiteelement model, the paper interface unit between the concrete and the CFRP sheet andconcrete and FRP anchor establish face-face contact, a true reflection of the two componentsin contact with each other bonding relationship; Finally, the results of the finite elementanalysis, research FRP anchor mechanism and impact parameters.