Open AccessMonitoring of a Seismic Isolation Object on Fluoroplastic Gaskets
Author(s) -
Vladimir Lapin,
S. E. Yerzhanov
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1079/2/022071
Subject(s) - gasket , acceleration , seismology , structural engineering , vibration , geology , displacement (psychology) , engineering , physics , acoustics , mechanical engineering , psychotherapist , psychology , classical mechanics
A special testing ground is used to study the seismic insulating properties of buildings in Almaty. It includes buildings with conventional tape foundations with a cross-tape system, seismic-insulating kinematic and supports with fluoroplastic gaskets. The buildings are equipped with engineering-seismometric service stations (stations 20,21,22). The results of experimental studies of the house on fluoroplastic gaskets, performed in the late 80s, are analyzed. The results are compared with instrumental records during the earthquakes of May 31, 2012 and August 16, 2014. The period of the maximum of the spectrum coincides with the resonance at the initial stages of vibration tests 0.44-0.47 sec. Using a single-mass calculation scheme, taking into account the presence of dry friction forces, the calculation of the dynamic model of the building on the impact of an unsteady random process is performed. The median acceleration values at the base correspond to the data of the “Seismic Zoning Map of the Republic of Kazakhstan” for earthquakes with a recurrence of 475 years and 2475 years. Probabilistic estimates of displacement values at the support level are obtained.