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Building monitoring in Bishkek and Dushanbe by the use of ambient vibration analysis
Author(s) -
Bojana Petrović,
Dino Bindi,
Marco Pilz,
Matteo Serio,
Sagynbek Orunbaev,
Jafar Niyazov,
Farhad Hakimov,
Pulat Yasunov,
Ulugbek Begaliev,
Stefano Parolai
Publication year - 2015
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-6679
Subject(s) - modal , computer science , mode (computer interface) , geology , vibration , modal analysis , seismology , normal mode , acoustics , physics , chemistry , polymer chemistry , operating system

Within the framework of the EMCA - Earthquake Model Central Asia - project, the cities of Bishkek (Kyrgyzstan) and Dushanbe (Tajikistan) were selected for building monitoring using measurements of seismic noise to obtain the dynamical properties of the buildings. Eight buildings of different construction types, date of construction and building height, both, Soviet-era and recently constructed buildings, were instrumented for a period of a few hours. In this study, an overview of the experiment is given, including a short description of each monitored building’s structure and the performed installation. Preliminary results for a representative Soviet-era residential building in Dushanbe are presented. Modal analysis is performed using the Frequency Domain Decomposition (FDD) method to estimate the natural frequencies and the mode shapes. The wave propagation velocities in the two directions along the building axes are determined by an interferometric approach. Although the experimental set-up was not the optimal, valuable information about the dynamical characteristics of the buildings were still obtained.

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