Experimental research on modal parameter identification of 100-meter fully-grouted reinforced-block masonry shear wall structure

DOI

10.2991/iceesd-18.2018.89How to use a DOI?

Keywords

Fully grouted reinforced-block masonry shear wall structure; Modal parameter identification; Ambient excitation; Velocity time-history; Fourier spectra

Abstract

To evaluate the dynamic characteristics of 100-meter fully-grouted reinforced-block masonry shear wall (FG-RMSW) structure, a FG-RMSW structure in construction process was tested using the ambient excitation vibration method. A total of three tests were conducted to fully understand the dynamic characteristics of this structure. Based on the structural characteristics, when the structure was built to the 10th, the 18th, and the 28th floor respectively, translation in transversal, longitudinal, and vertical directions and the vertical rotation of the structure were tested. Multiple velocity time-history and acceleration time-history records of the structure were obtained through tests. Moreover, Fourier spectra of the structure in different directions at different heights were calculated. The test results indicated that the velocity time-history was stable, without an excessive fluctuation and pulse; the reliable data could be obtained through the filtering method. Therefore, it is recommended that the velocity time-history is used as the object of analysis. By picking up the peak in the Fourier spectra, the fundamental frequencies of the structure on the 10th, the 18th, and the 28th floor were 2.76 Hz, 1.18 Hz and 0.63 Hz respectively. The higher the height of the structure, the more abundant the frequencies-spectra components are, and the higher-order modes of the structure can be displayed. The dynamic characteristics of such structures can be obtained by adopting the modal parameter identification method under ambient excitation.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Yan Zhao
AU  - Siyuan Chen
AU  - Huaming Li
AU  - Hongbo Liu
PY  - 2018/05
DA  - 2018/05
TI  - Experimental research on modal parameter identification of 100-meter fully-grouted reinforced-block masonry shear wall structure
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 492
EP  - 499
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.89
DO  - 10.2991/iceesd-18.2018.89
ID  - Zhao2018/05
ER  -