Study On The Cohesive Force Mecganics Of Anti-floating Bolt In Red Sandstone

In order to study the mechanical properties of anti-floating anchor rod in medium-strong weathered red sandstone and its application in engineering examples,this paper takes the virtual university town project of Hengyang High-tech Zone of Hunan Province as the engineering background.Destructive pullout test of anti-floating anchor rod.The effects of different parameters on the adhesion of anti-floating anchor rod were studied by test and ABAQUS software simulation from three aspects:drilling depth of anti-floating anchor rod,strong weathered silty mudstone and apoplectic silty mudstone.At the same time,the adhesion of anti-floating anchor rod in the same type of rock but with different drilling depth is compared and analyzed.The results show that under the condition of the same drilling depth,the adhesion of anti-floating anchor rod of different rock strata is different,and under the condition of the same type of rock formation,the adhesion of anti-floating anchor rod of different drilling depth is not the same.According to engineering field test date,the relationship between the ultimate bearing capacity of anti-floation bolt under the condition of different drilling depth of the same rock type is obtained,and the relationship between the ultimate bearing capacity of the anti-floation anchor under the same drilling depth of different rock types.Through numerical simulation of engineering field test,the destruction of anti-floation anchor indirectly reflected.