ACTUAL PROBLEMS OF APPLICATION OF COMPOSITE FLEXIBLE CONNECTIONS IN EXTERNAL THREE-LAYER WALL PANELS

In this paper, the technical problems of using the structures of their three-layer panels with flexible connections made of polymer materials are considered on the example of a residential complex under construction in Astana. The study of three-layer panels with flexible composite bonds was carried out as a result of the appearance of cracks with an opening width of acrc = 0.05-0.1 mm. The main purpose of the study was to establish the causes of cracking and to develop recommendations for the exclusion of such phenomena in the structures of three-layer panels with flexible composite bonds, which was carried out in the following directions: preparatory research (study of technical and design documentation, review of scientific and technical literature (sources) in this field of theory of buildings and structures); full-scale study of external wall three-layer panels with flexible polymer bonds (the actual strength of concrete was determined; the entire technological chain of creation and erection of the structure under study was traced (manufacture, transportation, installation in the design position); actual reinforcement of panels was established); performing panel verification calculations for various design situations (a total of six design calculation options) based on software the Lira CAD complex; identification of the main causes of cracks and development of recommendations for the elimination of future technical problems in the design, manufacture, transportation and installation of three-layer panels with flexible composite bonds.