Model Test And Particle Flow Numerical Simulation Of Anchorage Mechanism

The prestressed anchorage technology obtained the widespread application in Geotechnical Engineering, and has obtained the huge economic efficiency and the social efficiency. But at present, regarding the prestressed anchorage technology theory and the experimental study is still limited in the mechanics of continua and in the macroscopic experimental. it was unable from essentially to promulgate the anchor effect. Even if in massive macroscopic experiments, because of the limit of the test condition, it also cannot comprehensively analyze the entire anchor cropping surface stress and the distortion rule.This article through the room Model tests and the Particle flow code (PFC^2D) numerical analysis method analyze the stress field and the displacement field of the anchor system from the viewing carefully angle, and mainly has obtained the following research results:(1) Use of indoor model test, we measure the strain of the anchor,wall rock by the strain measurement device. Further analyze the law of axis and shear stress of prestressed anchor in a single static load.(2) Use of digital photography deformation measurements technology, we analysis the distribution of displacement and shear stress about the anchor and the surrounding rock of the anchor.(3) We use PFC^2D theory to establish a rational computer simulation model. Use and development of PFC^2D software to analysis the stress and strain laws, load - of displacement, destruction of the anchoring system in the static load. Through the contrast with the results of experimentation with real situation, the results of numerical analysis proved to be correct.The paper finally put forward the proposal on the question and the direction which needed further to study in the future.