An analysis of working performance of pressure-type and tensile-type anchor

Being separately establishment the load transfer mechanism of pressure-type anchor and tensile-type anchor,different shear stress of mechanisms and distributing behaviors between pressure-type anchor and tensile-type anchor were compared and analyzed,moreover,the bearing capacity and deformation characteristics of anchor were also measured with applying ratio of slip coefficient and equivalent anchoring body deformation modulus.Experimental and theoretical analysis result indicated that the volume of pressure-type anchor was expanded in radial direction,and the shear stress between the anchor and the rock stratum was amplified in consequence,which collaborative enhanced the bearing capacity and deformation characteristics of pressure-type anchor surrounding the vicinity rock mass.The result also suggested the working performance of pressure-type anchor was prior to tensile-type anchor.This manifested the feasibility of applying ratio of slip coefficient and equivalent anchoring body deformation modulus to evaluate the bearing capacity and deformation characteristics of anchor,which presented a method to study on working performance of pressure-type anchor.