Bilyk S. Rational steel frames constructive decisions of I-shaped cross-section with variable web height for economy energy buildings

Accomplished researches include the optimal topology founding of steel frame skeleton with incline elements and beams with axis around functional volume. There were found laws of optimal topology for the frame skeleton with minimal structural volume around functional volume, which bound by n- power function and m- power function. Carried out researches discovered some peculiarities of the stressed-deformed condition for the columns of I-shaped cross-section frames with variable web height. There was found the buckling resistance criterion for the frame, which consisted of the columns with the variable cross-section. There was established in researches, that the calculation length factor of the column with the variable cross-section in the case of the pliable edge conditions of ends connections. There were accomplished researches Optimum of Steel Beam by variable stiffness braced at the metal floor decking and Optimum columns of I-shaped cross-section with variable web height of frames. There was found,that the maximal tangential stresses in the web of the I-shaped variable height beams. The result of science manuscript put into practice during designing of rational constructive frames for real buildings.