A case of registering seismic impact on the high-rise building of the Moscow State University
Category: 16-3UDC 550.34
A.Yu. Marchenkov(1), N.K. Kapustian(2), V.B. Smirnov(1,2)
(1) Lomonosov Moscow State University, Moscow, Russia
(2) Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Abstract. Seismological monitoring of the high-rise building of the Moscow State University (MSU) has been conducted since 2010. 13 three-component seismic stations similar to those used by the Geophysical Survey of the Russian Academy of Sciences (GS RAS) are installed inside the building at various height. The frequency range of instruments is about 0.02–50 Hz, GPS synchronization is applied.
Amplitudes of vibrations caused by seismic and wind effects recorded at various heights were compared to previously obtained GS RAS results and data available for other high-rise buildings in Moscow. An eigen-oscillation frequency range was obtained for the MSU building and its spire depending on the weather. Frequency variations were given for eigen-oscillations of the spire under ice load during the freezing rain in 2010.
The article also presents analysis of MSU building vibrations, caused by the distant Okhotsk Sea earthquake (23 May 2013, M=8.4). The amplitude of these vibrations exceeded all previous records. The vibrations are being analyzed in the paper in order to study the response of the building to seismic effects. Some methodological deductions were made concerning the system’s observation capacities and the necessity to create computational models of the building, which will allow to use experimental data for determining the current structural state of the building.
Keywords: seismic effect, monitoring of buildings, seismological observation, modeling.
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