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Seismic Response of Single-Layer Lattice Domes Made from Steel and Aluminium
Lattice domes are used in the construction of stadiums and airports to accommodate many people. These structures fit into the high seismic importance category because they serve as shelters in case of seismic events. Information based on research regarding the seismic design of domes exists; however, the practical application of this information by the designer remains a daunting challenge. Essentially, there are no established guidelines for the seismic design of domes. Given that aluminium is fast evolving as an effective alternative to steel in the construction of domes, the objective of this study is to assess the seismic performance of an aluminium dome in comparison with a steel dome using modal analyses, modal pushover analyses and nonlinear time history analyses. The selected ground motion for the time history analyses is the 1995 Kobe earthquake with a peak ground acceleration of 0.48 g. It was observed that the modal characteristics of both domes were similar. There was no permanent deformation in both domes under the unscaled ground motion. However, at higher seismic intensities, permanent deformations occurred, and both domes had about the same residual displacement. For all levels of seismic intensities considered, the aluminium dome experienced more displacements than the steel dome.
Seismic Response of Single-Layer Lattice Domes Made from Steel and Aluminium
Lattice domes are used in the construction of stadiums and airports to accommodate many people. These structures fit into the high seismic importance category because they serve as shelters in case of seismic events. Information based on research regarding the seismic design of domes exists; however, the practical application of this information by the designer remains a daunting challenge. Essentially, there are no established guidelines for the seismic design of domes. Given that aluminium is fast evolving as an effective alternative to steel in the construction of domes, the objective of this study is to assess the seismic performance of an aluminium dome in comparison with a steel dome using modal analyses, modal pushover analyses and nonlinear time history analyses. The selected ground motion for the time history analyses is the 1995 Kobe earthquake with a peak ground acceleration of 0.48 g. It was observed that the modal characteristics of both domes were similar. There was no permanent deformation in both domes under the unscaled ground motion. However, at higher seismic intensities, permanent deformations occurred, and both domes had about the same residual displacement. For all levels of seismic intensities considered, the aluminium dome experienced more displacements than the steel dome.
Seismic Response of Single-Layer Lattice Domes Made from Steel and Aluminium
Lecture Notes in Civil Engineering
Gupta, Rishi (editor) / Sun, Min (editor) / Brzev, Svetlana (editor) / Alam, M. Shahria (editor) / Ng, Kelvin Tsun Wai (editor) / Li, Jianbing (editor) / El Damatty, Ashraf (editor) / Lim, Clark (editor) / Efio-Akolly, Akossiwa Constance (author) / Annan, Charles-Darwin (author)
Canadian Society of Civil Engineering Annual Conference ; 2022 ; Whistler, BC, BC, Canada
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 ; Chapter: 19 ; 291-303
2024-02-06
13 pages
Article/Chapter (Book)
Electronic Resource
English
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