INCREASING EFFICIENCY OF A CONNECTION OF UNIFIED ELEMENTS OF AN ARCH OF LIGHTWEIGHT BUILDINGS

Statement of the problem. When designing lightweight arch buildings using the principle of an “open” standardizing, which provides the erection of load-carrying arches of any outline from a set of unified elements, the major question to be addressed is the development of an effective connection of unified elements providing their connection at arbitrary angles.Results. Numerical studies were made of a connection of thin-walled cold-bent open-section profiles on self-drilling, based on which an optimum disposition of self-drilling screws providing the greatest durability and rigidity of connection was defined. The experimental studies were made of models of connections of unified elements with a proposed disposition of self-drilling screws. Also, numerical and experimental studies of a new way of strengthening thin-walled elements connection were provided.Conclusions. The data obtained in numerical and experimental studies allow us to draw conclusions about perspectivity and expediency of the proposed ways of increasing efficiency of unified elements connection of a lightweight arch building.