Pryout failure of single headed stud anchor: 3D numerical FE analysis

摘要

In the present article the results of a three-dimensional finite element study performed on a single headed stud anchor loaded in shear and failing in the so called pryout failure mode are presented and discussed. To verify the validity of the numerical model, recently performed experimental tests are simulated. It is shown that the model realistically replicates the results of experimental tests for anchors with different embedment depths and diameter. The results confirm that the diameter of the anchor is a relevant parameter, which should be included into the design formula for prediction of pryout resistance. Subsequently, parametric study is carried out in which the anchor plate overhang and eccentricity of shear load are varied. It is shown that with the increase of the anchor plate overhang the ratio between tensile and shear forces decreases. Furthermore, it is shown that there is a linear decrease of pryout resistance with increase of eccentricity. Finally, the numerical results confirm the validity of design formulas for the interaction between tensile and shear load.