Identification of Fei-Tsui arch dam from both ambient and seismic response data
Resource
Soil Dynamics & Earthquake Engineering 15, 465-483
Journal
Soil Dynamics & Earthquake Engineering 15
Pages
465-483
Date Issued
1996
Date
1996
Author(s)
Wu, Tsu-Shiu
DOI
246246/2006111501254404
Abstract
This purpose of this paper is to study the dynamic characteristics of the Fei-Tsui arch dam using the seismic response data & the ambient vibration data. For the identification of dam properties from seismic response data, the multiple inputs from the abutment of the dam to represent the nonuniform excitations of seismic input motion are considered, & the ARX model is applied using the discrete-time linear filtering approach with least-squares approximation to identify the dynamic characteristics of the dam. The system modal dampings, natural frequencies & frequency response functions are identified. A comparison of the identified modal parameters is made among different seismic events. Post-earthquake safety evaluation of the dam can be made based on the identified model. Finally, the ambient vibration test of the dam is performed to identify the mode shapes along the dam crest.
Subjects
system identification
time series analysis
structural dynamics
ambient vibration.
Publisher
Taipei:National Taiwan University Dept Phys
Type
journal article
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