Analysis of Factors Affecting Shear Performance of Shear Key in Open-web Sandwich Plate

Abstract

In order to study the shear properties of the shear key of reinforced concrete open-web sandwich plate, several ABAQUS finite element models are established in this paper. The factors that may affect the shear key’s shear properties are analyzed, and the finite element calculation results are obtained by the above factors. The results of the related formulas in the literature[8-9] and the literature[10] are compared. The results show that the height of the top and bottom rib and the height of the shear bond have obvious influence on the shear capacity and ultimate shear capacity of the shear bond of the concrete open-web sandwich plate with common span. The safety bearing capacity of the shear of shear key of the small-span open-web sandwich plate is close to that calculated in the literature[8-9]; the shear bearing capacity of the long-span open-web sandwich plate is close to that of the literature[10].Through the parametric fitting correction of the relevant formulas in the literature[8-9] and the literature[10], a more accurate calculation formula of the shear bearing capacity of the shear key is obtained, which provides a calculation basis for the shear performance analysis of the shear key.