Improvement of Thermal Characteristics of a Node Between a Tubular Steel Truss and a Column

The article sets out the results of theoretical research on the improvement of heat-protective properties of the node, supporting tubular steel trusses on a metal tubular column, located in the center of the room. The authors of the article used in their studies an existing node, which was used in the auxiliary premises module of Poltava City School № 24. Theoretical research on the existing variant of heat insulation of the nod has been performed in the scientific study. The article states the temperature value on the outer surface of the steel column in the place of its adjoining to the ceiling, which at the design temperature of the outside air proved to be less than the temperature of condensate formation (dew point). The article offers the improved version of the insulation of the node, which provides for the location of heat insulating material in the middle of the column. This method allows to raise the temperature at the point where the column adjoins the ceiling above the dew point. The optimal location of the insulation and its thickness have been defined in this article.