Research On The Performance Of Jujube Seed Shaped Anchor Cable In Mudstone

With the continuous development of the infrastructure construction and the prevented and cured engineering of geological disaster, the technology of Rock-soil Anchoring engineering is widely used in the construction of civil engineering because it can reinforce the rock mass by put the rock mass’ s self-strength into good use.The technology of the pre-stressed anchor cable transfer the loads with the adhesion stresses of the steel strand & mortar and the mortar&rock mass. Because of its powerful adaptation and highly anchoring efficiency and convenient construction, the technology of the pre-stressed tension anchor is developing rapidly in recent years.Nowadays there are many researches on the technology of the Pre-stressed anchor,especially its analysis theories,computing methods and the calculating models. But recent researches didn’t tell how to use the technology in a specific rock mass such as malmstone, shale or mud-rock. The mud-rock is wildly distribution In the Sichuan Basin, because of its strong hydrophilia and weak water-permeability,the mud-rock is easily to soften and deformation,so the mud-rock is much different from other rocks.But most of the recent researches of the mud-rock and the anchor are separated,so this thesis is aimed at researching the Pre-stressed anchor’s mechanical performance in the mud-rock.This thesis introduced the Pre-stressed anchor cable’s character and its development status both at home and aboard, then the Pre-stressed anchor’s classifications and compositions and the reinforcement mechanism were mentioned.This thesis deduced the anchor’s ultimate strength capacity by adopting the Hoek-Brown strength criterion, then studied the anchor cable’s ultimate strength capacity and the different strength when make-up/none make-up the steel strand in the practical engineering,the thesis aimed at studying the tensile cable’s mechanical property with different length and different interior sections. At last, this thesis studied the cable’s distribution of bolt axial force and shearing strength with the FLAC3 D.