Analysis of the harmonic excitation of scaffolding structures
Ładowanie...
Data
2021
Autorzy
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Wydawnictwo Politechniki Łódzkiej
Lodz University of Technology Press
Lodz University of Technology Press
Abstrakt
Scaffoldings are lightweight temporary structures used mostly at construction sites. Due to
their dynamic characteristics they are prone to dynamic excitation occurring at the structures or in the nearby
at the construction site. A medium size scaffolding FEM model was subjected to harmonic excitation with
frequencies ranging from 2 Hz to 12 Hz as a single harmonic force located in one of the selected nodal points.
Full dynamic analysis of structure subjected to the load varying in time was provided by direct integration.
Maximum displacement during forced vibrations and fading free vibrations after the source of excitation
became inactive were watched in relation to the force parameters and its location. It has been observed that
frequencies close to the first natural frequencies propagate to the entire structure, while higher frequencies
cause discomfort for scaffolding users, but have a smaller range of action.
Opis
Słowa kluczowe
scaffolding, harmonic excitation, dynamic analysis, direct integration, rusztowanie, wzbudzenie harmoniczne, analiza dynamiczna, integracja bezpośrednia
Cytowanie
Bęc J., Błazik-Borowa E., Szer J., Analysis of the harmonic excitation of scaffolding structures. W: XXVII LSCE 2021 : Lightweight Structures in Civil Engineering. Contemporary problems. Book of Abstracts, Szafran J. (Ed.), Kamiński M. (Ed.), Wydawnictwo Politechniki Łódzkiej, Łódź 2021, s. 41-44, ISBN 978-83-66741-15-7.