Summary of Research on Shear Strength of Keyed Joints in Segmental Precast Assembled Bridge

Shear keys are important parts that affect the mechanical properties and durability of segmental precast concrete bridge structures. In order to improve the understanding of the mechanical properties of the shear key of the segmental precast bridge, this paper summarizes the factors affecting the shear performance of the key teeth joints of the segmental precast bridge according to the relevant research at home and abroad, including the area of the shear key, the number of key teeth, the height of the key teeth, the form and the layout scheme. This paper expounds on the research results of the mechanical properties of the key teeth joints at home and abroad, including the failure mode and crack development law of the key teeth test, the theoretical derivation of the shear bearing capacity formula and the analysis of the finite element simulation results.