Building monitoring in Bishkek and Dushanbe by the use of ambient vibration analysis

Annals of Geophysics

Sagynbek Orunbaev¹  Stefano Parolai²  Dino Bindi²  Marco Pilz²  Bojana Petrovic²  Pulat Yasunov³  Jafar Niyazov³  Farhad Hakimov³  Ulugbek T. Begaliev⁴  Matteo Serio⁵ 

[1] Central Asian Institute for Applied Geosciences, Bishkek,;Helmholtz Center Potsdam - German Research Center for Geosciences, Potsdam,;Institute of Geology, Earthquake Engineering and Seismology, Academy of Sciences of the Republic of Tajikistan, Dushanbe,;International University of Innovation Technologies (IntUIT), Bishkek,;Serio Engineering & Architectural Services and Consulting, www.serioconsulting.it;

关键词: Building monitoring;    Modal analysis;    Seismic interferometry;    Wave propagation in buildings;    Ambient vibration;   

DOI  :  10.4401/ag-6679

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown