Study On The Non-metallic Anchor Performance And Its Application In Highway Slopes

Anchor bolt supporting is an effective reinforcement method and has been widely applied in geotechnical engineering. However, the corrosion problem of steel anchor is also increasingly serious, this new type of FRP composite anchor bolt with high tensile strength, good anti-corrosion property and a small loss of prestress has a good prospect of application in geotechnical engineering.This paper is based on consulting a large number of relevant literature, conducting a preliminary study on the properties of FRP anchor and reinforcement design in the slope with theoretical analysis, experimental and numerical simulation methods, the main research contents include the following five aspects:1?Briefly describing the part of three common types of anchor bolt such as FRPanchor, FRP-prestressed anchor and FRP- hollow bolt, and analyzing the features of vari- ous FRP anchor and its applicable range.2?Simulating the actual slope soil pH in the laboratory environment, through the observation of FRP anchor appearance change and determine the basic mechanical prope-rty indexes, by comparison and analysis of the corrosion resistance of FRP anchor in acid and alkali environment.3?In order to investigate the distribution and influence factors of bond stress betwe –en FRP anchor appearance and cement mortar, using improved method of determination of pullout test. At the same time, using a single variable method to analyze the two factors anchorage length and the anchor mortar strength grade how to influence the bond stress.4?The theoretical derivation by selecting the micro segment, obtaining a differential equation of bond stress between FRP anchor appearance and cement mortar. Combining with the results of previous studies on the bond stress distribution model, put forward the two period bond stress distribution curve; And analyzing distribution of bond stress through ANSYS finite element software.5?Based on the project of " Highway Slope Anchor Technology Application of FRP composite material " as the background,using limit equilibrium method to design the alope; Conducting numerical simulation by ANSYS finite element software and briefly analyzing the enforcement effect.