The impact of leg spacing of telecommunication towers on their bending stiffness, total weight, and dynamic properties

• Autorzy: Szafran Jacek , Kubacka Ewelina , Juszczyk-Andraszyk Klaudia

Identyfikatory

DOI

10.24425/ace.2025.154116

Warianty tytułu

PL

Wpływ rozstawu krawężników wież telekomunikacyjnych na ich sztywność na zginanie, ciężar całkowity i własności dynamiczne

• Języki publikacji: EN

Abstrakty

EN

The paper presents analyses aimed at determining how the spacing between legs of a steel lattice telecommunication tower affects displacements of its top, its natural frequency, and its self-weight. The critical characteristic of the results is that they were obtained for structures optimized with respect to the load-carrying capacity of their individual components. It was assumed that levels of effort should be kept between 85% and 95%. As far as engineering practice is concerned, the key conclusion is that a larger distance between the legs has a positive impact on the self-weight of the structure. It was demonstrated that a larger leg spacing is related to a smaller self-weight of the tower and thus a smaller quantity of material required. The proposed research and calculation method makes it possible to conclude that providing a larger distance between the legs while optimizing structural members with respect to their effort (preferably by means of an automated process) results in both higher bending stiffness and lower structure self-weight required.

PL

W artykule zaprezentowano analizy polegające na poszukiwaniu wpływu rozstawu krawężników kratowej, stalowej wieży telekomunikacyjnej na przemieszczenia wierzchołka konstrukcji, częstotliwość jej drgań własnych oraz ciężar własny obiektu. Krytyczną cechą uzyskanych wyników jest ta, że zostały one uzyskane dla konstrukcji zoptymalizowanych pod względem nośności jej poszczególnych elementów. Przyjęto, że stopień wytężenia powinien mieścić się w zakresie 85-95%. Kluczowym wnioskiem z punktu widzenia praktyki inżynierskiej jest ten, że zwiększony rozstaw krawężników wpływa pozytywnie na ciężar własny konstrukcji. Udowodniono relację: większy rozstaw – mniejszy ciężar własny wieży – mniejsze zużycie materiału. Zaproponowana metoda badawczo-obliczeniowa pozwala na stwierdzenie, że zwiększenie rozstawu krawężników przy jednoczesnej (najlepiej zautomatyzowanej) optymalizacji elementów konstrukcyjnych pod względem ich wytężenia, zarówno zwiększa sztywność na zginanie jak i zmniejsza wymagany ciężar własny konstrukcji.

Słowa kluczowe

EN

dynamic; lattice structure; stability; standard; telecommunication tower; wind load; bending stiffness

PL

dynamika; struktura kratownicowa; trwałość; norma projektowa; wieża telekomunikacyjna; obciążenie wiatrem; sztywność na zginanie

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2025
• Tom: Vol. 71, nr 2
• Strony: 193--208
• Opis fizyczny: Bibliogr. 19 poz., il., tab.

Twórcy

autor

Szafran Jacek

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

• https://orcid.org/0000-0002-6984-0193

autor

Kubacka Ewelina

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

• https://orcid.org/0000-0003-1727-9143

autor

Juszczyk-Andraszyk Klaudia

• Compact-Project Company, Lodz, Poland

• https://orcid.org/0009-0007-7657-8406

Bibliografia

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