Wind-induced responses and dynamics characteristics of an asymmetrical base-isolated building observed during typhoons

Citation data:

Journal of Wind Engineering and Industrial Aerodynamics, ISSN: 0167-6105, Vol: 167, Page: 183-197

Publication Year:
2017
Usage 2
Abstract Views 2
Social Media 4
Shares, Likes & Comments 4
Citations 1
Citation Indexes 1
DOI:
10.1016/j.jweia.2017.04.020
Author(s):
Dionysius M. Siringoringo, Yozo Fujino
Publisher(s):
Elsevier BV
Tags:
Engineering, Energy
article description
Responses of an asymmetrical base-isolated building during the passage of Typhoon Roke 2011, Typhoon Guchol 2012 and a bomb cyclone strong-wind event on April 3, 2012 were investigated in this paper. Wind-induced accelerations of the building were recorded by dense array permanent monitoring system and analyzed in detailed by spectra analysis, time-frequency wavelet analysis and system identification. Results of analysis revealed that wind-induced responses of the buildings were dominated by the first mode which is the fundamental flexural mode coupled with torsion of the upper stories. Building responses demonstrated non-linear characteristics of natural frequencies, damping ratio and mode-shapes. Natural frequencies of fundamental modes decreased with the increase of acceleration amplitude, with the maximum reduction of 8–10% of natural frequencies observed during the peak wind speed. Damping estimates of the fundamental modes increased with the increase of accelerations, while characteristics of mode-shapes were also found to be dependent on the wind speed. Further analysis revealed that non-linear characteristics of building responses are related to isolator deformations caused by wind-induced static force.

This article has 0 Wikipedia mention.