Latest issueDynamics of the Object of Polygon of Seismic Isolation: Building at Kinematic Foundations
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
Rubric: Theoretical and experimental studies
Key words: seismic isolation, vibration tests, accelerogram, safety
Annotation:
To study the seismic insulating properties of buildings in Almaty there is a special polygon. It includes buildings with conventional strip foundations with a system of cross-belts, seismic kinematic and supports with PTFE gaskets. The buildings are equipped with stations of engineering and seismometric service. The results of experimental studies at home on KF, performed in the late 80-ies. The results are compared with the instrumental records of the earthquakes of May 31, 2012 and August 16, 2014. The period of maximum spectrum coincides with the resonance in the initial stages of vibration tests-0.45-0.51 seconds. It is established that floor distortions of floors of the building decrease with height. With the use of a one-mass calculation scheme, taking into account the nonlinear deformation diagram, the dynamic model of the building is calculated for the impact in the form of accelerograms of the specified earthquake at the Foundation level.