Apply Research Of The Theory Of Wholly Grouted Anchor Load Transfer Model

In this subject study of the application of the wholly grouted anchor load transfer model in geo-technical engineering,based upon intensive study of theoretical analysis,numerical analysis and summery of a lot of other scholars' test consquenses,research and disicussion are put into practice,then series of significent research findings are gained in the thesis,which are as follows:1, Through summery of the former load transfer model by partial deformation supposition,the ideal elastic-plastic load transfer model is gained by the same partial deformation supposition.Refered by the pullout test conclusions of single short fiber buried in matrix in composite materials interface research,the exponetial function load transfer model is deducted.By use of yield condition fo rock-soil elastic-plastic mechanics,the load transfer model by Mohr-Coulomb criterion is obtained.By simulation of exsitent test conclusions,the shear stress-displacement degradation load transfer model is set up.2, By use of the ideal elastic-plastic load transfer model by partial deformation supposition,the wholly grouted anchor pullout resistance resolve calculation formula,which is aimed at the weak surface locates at the interface of anchorage body and rock or soil is deduced theorically.The wolly grouted anchor pullout resistance resolve calculation formula become maturity when the simply analysis method based on the Mindlin solution suits to the weak surface locates at the interface of anchor bolt and rock or soil.I hope to the disscusion fo elastic-plastic load transfer model applying to the resistance formula leads to the research of elastic-plastic mechanics on the application of anchor.3, The resolve calculation formula of the critical length of anchor is got by the elastic load transfer model based upon partial deformation supposition,and the engineering length of anchor is confirmed by analysis and research.For the sake of getting more understand of the critical length of anchor when the anchor enters plastic work state, numerical analysis is applied to the research of the ritical length of anchor based on the shear stress-displacement degradation load transfer model.The content of tradition definition of the critical length is enlarged.