Static Behavior of Push out Specimen with Multi row Stud Connectors

Abstract:

The shear bearing capacity of single stud obtained from single row stud push out test and that from multi row stud push out test are different to some degree. In order to clarify the effect of the stud row numbers on the ultimate strength of the stud, one single stud push out test and four multi row stud push out tests with different rows were carried out. The test results show that the number of stud rows affects the stud shear bearing capacity, and the average capacity of single stud connector decreases by increasing the number of stud rows, while the influence of the number of stud rows tends to be stable with the increasing of the number of row, also the influence value is within 15%. Combined with the push out test, the expression of the number of stud row affecting the shear bearing capacity of stud is given. In addition, based on the load slip curves of multi row stud, the expression of the load slip relation of multi row stud is proposed. Compared to testing results, the new expression has a better match with the experimental values.