ABOUT ACCOUNTING THE SUPPLY OF BUTT CONNECTIONS IN CALCULATIONS OF ELEMENTS OF MULTI-STOREY BUILDINGS
The article provides a review of the literature on the design of multi-storey buildings made of precast concrete, consisting of many nodal junctions. The analysis of accounting for the flexibility of butt joints of frame and braced structural systems is considered. The method of taking into account the flexibility of butt joints of prefabricated reinforced concrete panels when calculating large-panel buildings for the action of longitudinal forces, bending moments and shear forces is presented. The issues of calculating the flexibility of discrete-type butt joints, which are made in the form of steel embedded parts, connected to each other by welding with steel plates, are given. In order to assess the compliance of butt joints, a review is given of works in which the dependences of the force and deformation in the bonds are obtained. Three types of model are shown depending on the analysis of the nature of the work of the bonds under possible forces acting on them and causing tension (compression), bending, and shear.