Shaping the joints of steel multi-story plane frames to mitigate their progressive collapse mechanism with regard to internal column loss scenario

• Autorzy: Kukla Damian , Kozłowski Aleksander

Identyfikatory

DOI

10.24425/ace.2025.153342

Warianty tytułu

PL

Kształtowanie węzłów stalowych ram wielokondygnacyjnych w celu zatrzymania katastrofy postępującej w odniesieniu do scenariusza utraty słupa wewnętrznego

• Języki publikacji: EN

Abstrakty

EN

The continuation of a multistage research project based on experimental and numerical analysis is presented, focused on the robustness of the steel frame structure with bolted end-plate joints. An advanced FE model, validated on previously performed experimental tests of steel bolted joints and steel subframe structure, was used. A dynamic numerical analysis of planar steel structures was performed under a sudden internal column loss scenario using Abaqus software. An attempt was made to increase structural robustness in the event of a sudden removal of the internal column at the ground level of the steel frame with flush bolted end-plate joints. The application of a strategy based on the change of types of joints at the selected level of the structure was shown. Two main structural changes were implemented by using bolted extended end-plate joints, instead of flush end-plate, or by using the novel joint with additional rings. To check the behaviour of the structure and assess its robustness, a change of the joints was applied at the lower and upper levels of the structure. The use of bolted extended end-plate joints only in one level of the structure leads to progressive collapse of part of the structure. The application of the novel joint with additional double rings at one level of the frame in both analyses leads to obtain a required level of robustness and mitigates collapse of the structure.

PL

Przedstawiono kontynuację wieloetapowego projektu badawczego, opartego na analizie eksperymentalnej i numerycznej, skupiającego się na odporności konstrukcji ramy stalowej z węzłami śrubowymi z blachą doczołową. Zastosowano zaawansowany model MES, zweryfikowany na podstawie wcześniej przeprowadzonych badań eksperymentalnych stalowych połączeń śrubowych i stalowej podkonstrukcji ramowej. Przeprowadzono dynamiczną analizę numeryczną płaskich konstrukcji stalowych w scenariuszu nagłej utraty słupa wewnętrznego przy użyciu oprogramowania Abaqus. Podjęto próbę zwiększenia odporności ram stalowych z węzłami śrubowymi z blachą doczołową zlicowaną na wypadek nagłego usunięcia słupa wewnętrznego na poziomie posadowienia. Zaprezentowano zastosowanie strategii polegającej na zmianie rodzaju połączeń na wybranym poziomie konstrukcji. Wprowadzono dwie główne zmiany konstrukcyjne poprzez zastosowanie połączeń z wystającą blachą czołową zamiast wpuszczonej blachy czołowej lub poprzez zastosowanie nowatorskiego połączenia z dodatkowymi pierścieniami. Aby sprawdzić zachowanie konstrukcji i ocenić jej odporność, zastosowano zmianę węzłów na dolnym i górnym poziomie konstrukcji. Zastosowanie śrubowych doczołowych węzłów z blachą wystającą tylko na jednym poziomie konstrukcji prowadzi do postępującego zawalenia się części konstrukcji. Zastosowanie nowatorskiego połączenia z dodatkowymi podwójnymi pierścieniami na jednym poziomie ramy w obu analizach prowadzi do uzyskania wymaganego poziomu odporności i zatrzymuje zawalenie się konstrukcji.

Słowa kluczowe

EN

dynamic analysis; finite element simulation; joint; steel frame; structural robustness; progressive collapse; column loss

PL

analiza dynamiczna; symulacja numeryczna; węzeł; rama stalowa; odporność konstrukcji; katastrofa postępująca; utrata słupa

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2025
• Tom: Vol. 71, nr 1
• Strony: 415--434
• Opis fizyczny: Bibliogr. 34 poz., il., tab.

Twórcy

autor

Kukla Damian

• Inżynieria Rzeszów S.A., Rzeszów, Poland

• https://orcid.org/0000-0003-1612-8394

autor

Kozłowski Aleksander

• Rzeszów University of Technology, Faculty of Civil and Environmental Engineering and Architecture, Rzeszów, Poland

• https://orcid.org/0000-0003-0920-6681

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