Keywords
Abstract
The article is aimed at studying the operation of welded I-beams with corrugated web and technological perforations under static loading. The relevance of the study is due to the lack of specific instructions on the pitch, diameter and methods of strengthening technological perforations in the Republic of Kazakhstan and other countries. In this study the method of computer modeling with the help of the program complex LIRA-SAPR-2022 was used. The study was carried out for the beam, taking into account different sizes of perforations in the beam web, distances between the perforations, with and without perforation. The beam deformability and the beam stability with and without perforations under static concentrated load was analyzed. Twenty-nine beam models were analyzed, three circular perforations with diameters of 0,25 , 0,5 , 0,75 were formed in the webs of the beam models, where is the height of the corrugated web. The center of the perforations was located in the middle of the web height. The distance between the centers of the perforations were taken 2d, 3d and 4d, where d is the diameter of the perforation. Analysis of the performance of beam models with perforations under load showed that the bearing capacity of the beam decreases with increasing perforation pitch and perforation diameter. The most optimum perforation diameter for design may be perforation diameter 0,25 and 0,5 with perforation pitch 2d.