Latest issueChange Research of Dynamic Characteristics of High-rise Building According to Data from Engineering Seismometric Stations
Authors:
Ph.D.in Engineering Science, Director of the Center for Scientific Research of the Construction Industry, Corresponding Member of the NIA of Kazakhstan and IEA, KazRDICA JSC, Almaty, Republic of Kazakhstan
Vladimir A. Lapin
Yerzhanov S.Е.
Ph.D. in Engineering Science, Adviser to Director General for Science, Corresponding Member of NEA RK and IEA,KazNIISA JSC, Republik of Kazakhstan, Almaty
Daugavet V.
Sector Leader of the Engineering Seismometric Service , KazNIISA JSC, Republik of Kazakhstan, Almaty
Rubric: Theoretical and experimental studies
Annotation:
Analysis of instrumental records made by stations of Engineering and Seismometric Service on buildings has been performed to assess changes in dynamic characteristics of the 25-storeyed building of the “Kazakhstan” hotel in Almaty. The building is located near tectonic fault. During two earthquakes, representative instrumental data were obtained at the seismic station No. 16 (“Highrise hotel”) equipped with digital instrumentation system. The building is twenty-five storied with a stiffening core, was built in 1976. Using ADXL accelerometers and RSM-8 recorder, qualitative instrumental records of accelerations were received in the basement, on the floors and on the roof of the building, and spectral curves ? were also built. The features of the dynamics of this building during the earthquake are noted. Under the impact of remote earthquake, building oscillation periods were revealed on the first and second oscillation modes. Dynamic characteristics of the house were compared according to the measurements of 1977 and 2018. Significant increase in the magnitude of oscillation period on the first mode by 25-48% as compared with the measurements of 1976-1977 over the 40-year period of operation was established.