Abstract

The rationalization of topology of steel combined trusses is offered in the work. The search for a rational topology of steel combined trusses based on structural synthesis with the energy criterion of rationality is presented. The rational constructive form of a steel combined truss is offered. According to research, it is established that the most rational is the topology of trusses, in which the gratings have descending slopes and regular placement of racks. A rational angle of inclination of truss racks is obtained, which provides the minimum value of mass of combined trusses. The evaluation of rational parameters of combined steel trusses by the method of mathematical planning of the experiment is carried out. The diagram of maximum normal stresses in the stiffening beam of the combined truss is obtained. The potential of the calculated regulation of the stress–strain state in the stiffening beam, characteristic for such combined trusses, is revealed.

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