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Correlation between seismic input and modal response of spherical latticed shell

Version 2 2024-06-18, 06:41
Version 1 2023-10-25, 05:56
journal contribution
posted on 2024-06-18, 06:41 authored by Y Xiang, YF Luo, B Liao, ZY Shen
The dominant modes (DM) of latticed shells was obtained by analyzing the modal response characteristics in accordance with the pre-determined earthquake excitation input in the frequency domain, and the efficiency of the modal superposition method (MSM) was improved. The modal response characteristics were obtained by calculating the numerical values of the modal quasi-static response, and the resonant response and the coupled response after their definitions were given. The correlation between the earthquake excitation input and the modal response was studied. The regularities of the component responses contributing to the overall responses were obtained as well. Numerical examples show that the DM frequencies are controlled by a certain frequency range or several certain frequency ranges in accordance with the predicted excitation input. For the different frequency ranges of the total structural response, the type of the dominant modal response varies. Meanwhile, the procedure of the modified MSM was given, which takes the correlation between the structural responses and the seismic input under certain seismic zonation and site condition into consideration.

History

Journal

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science)

Volume

50

Pagination

1040-1047

Location

Hangzhou, China

ISSN

1008-973X

Language

chi

Copyright notice

2016, Zhejiang University Press

Issue

6

Publisher

Zhejiang University Press

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