On the issue of modeling a prestressed steel beam with a perforated web
Abstract
On the issue of modeling a prestressed steel beam with a perforated web
Incoming article date: 15.07.2023A new building structure is proposed - a welded steel I-beam with a prestressed perforated wall. The prestress in the beam is created by stretching the web and subsequent welding with chords. Before prestressing, holes are cut in the wall. Using the LIRA-SAPR software package, a model is proposed that can be used to study the operation of a prestressed perforated beam (PNPB) structure. The influence of various forms of voids in the wall on the change in the stress-strain state of steel I-beams prestressed by the wall drawing is studied. A preliminary assessment was made of the favorable effect of prestressing in a conventional perforated beam on the stress-strain state of beams with different forms of perforations in the web.
Keywords: steel structures, prestressing, numerical experiment, normal and shear stresses, bearing capacity