Point Protection of Primary Beams of Steel Grillages Against Lateral Torsional Buckling

• Autorzy: Piotrowski Rafał , Siedlecka Monika

Identyfikatory

DOI

10.12913/22998624/121532

• Języki publikacji: EN

Abstrakty

EN

The paper deals with the analysis of lateral torsional buckling (LTB) of steel beams that are components of grillages. Such structures are constructed from primary substring beams and secondary coupling beams. One of the functions performed by secondary beams in grillages is point protection of primary beams against overall stability failure. Based on the LTB analysis of primary beams, the condition specified in the code PN-EN 1993-1-1 (EC-3) was verified. The condition concerns the maximum spacing of point lateral bracings that stabilise compression flanges of beams. Critical moments of LTB for those beams were determined employing two methods. The first method involved the use of equivalent (simplified) loading diagram and the author-developed analytic formula. The other method employed LTBeamN and Abaqus (FEM) software, in which the whole beam was modelled together with bracings. Beam loading diagrams most frequently used in engineering practice were taken into account. Coefficients of LTB were determined in accordance with EC-3. A good congruence of results was obtained, which confirmed the correctness of the equivalent (simplified) beam loading diagram. The condition specified in the code PN-EN 1993-1-1 (EC-3) was also confirmed.

Słowa kluczowe

EN

critical moment of lateral torsional buckling of beams; steel grillage; point protection

PL

krytyczny moment poprzecznego wyboczenia skrętnego belek; stalowy ruszt; ochrona punktu

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2020
• Tom: Vol. 14, no 3
• Strony: 1--8
• Opis fizyczny: Bibliogr. 14 poz., fig., tab.

Twórcy

autor

Piotrowski Rafał

• Kielce University of Technology, Faculty of Civil Engineering and Architecture, al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce

autor

Siedlecka Monika

• Kielce University of Technology, Faculty of Civil Engineering and Architecture, al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).