Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)

Research on the operational modal testing of a structural laboratory through ambient excitation

Authors
Xiaomin Zhang, Jianqi Chen, Yong Sun
Corresponding Author
Xiaomin Zhang
Available Online April 2017.
DOI
https://doi.org/10.2991/iceesd-17.2017.14How to use a DOI?
Keywords
Operational modal; modal analysis; parameter identification;vertical irregularities; weak story.
Abstract
Modal parameter identification plays an important role in the dynamic performance evaluation and design of seismic structures. In this paper, we tested the large span space steel structure laboratory in a university, and then got modal parameters such as frequency and vibration mode based on the assumption of stationary random process. Compared the analysis results and the numerical results of the model show: the measured results are different from the theoretical results, the calculation period is about 2 times of the measured period, the actual stiffness of the structure is even larger ;The measured damping ratio is lower than the specified value. The strength and stiffness of the structure are increased by setting up the filling wall, to a certain extent, it reduces the damage of the main structure, but the vertical arrangement of the structure led to significant increase in interlayer deformation, a weak layer, unfavorable to the earthquake, which should be avoided in the layout of the structure.
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Proceedings
2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
Part of series
Advances in Engineering Research
Publication Date
April 2017
ISBN
978-94-6252-328-9
ISSN
2352-5401
DOI
https://doi.org/10.2991/iceesd-17.2017.14How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Xiaomin Zhang
AU  - Jianqi Chen
AU  - Yong Sun
PY  - 2017/04
DA  - 2017/04
TI  - Research on the operational modal testing of a structural laboratory through ambient excitation
BT  - 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-17.2017.14
DO  - https://doi.org/10.2991/iceesd-17.2017.14
ID  - Zhang2017/04
ER  -