Optimal parameter area for steel corrugated web beams

Abstract

The optimal application area of steel corrugated web beams is considered. The optimal height for beams with the set moment ofresistance is calculated and spans for such beams isdetermined. The problem takes into account thepeculiarities of the actual operation of the corrugated web. The parameter region is located within the area of rigidity constraints and manufacturing constraints. Actual work features of a corrugatedweb are considered. The mathematical beam modelis constructed as a problem of minimizing the objective function (mass of the beam) with structural coefficients. The parameters of the structural model correspond to Zenam technology. The designlimitations of this task depend on the beam technology of manufacturing. The physical model is a double-tee beam of the 1st class according to thestress-strain state (in accordance with DBN V.2.6- 198). Shear strength constraints of the web and the loss web stability constraints are taken into account. The value of the optimal beam height underthe condition of permissible deflection is considered and the thin web shear deformation is taken into account.The dependences are obtained and a simple method is constructed, which allows analyzing the optimal beam parameters in height and effective design parameters. The method makes it possibleto install rational solutions for the planning of coatings and floors using corrugated beams. An example of determining the range of optimal parameters within the range of rigidity constraints and technological constraints is given.It is shown that the study of beams with sinusoidal-corrugated walls should be carried out taking into account the real conditions of operation and reconstruction, ensuring technological requirements and fire resistance requirements in the future.