Seismic Isolation Systems in the Republic of Kazakhstan: Past and Present

An overview of the most used seismic isolation systems implemented in the Republic of Kazakhstan is offered. These are kinematic foundations, special elements with dry friction, newly developed systems based on planar robots, a system based on a ringless frame on kinematic foundations, classical pendulum systems based on dry friction elements, as well as promising systems using rubber-metal supports and supports made of rubber blocks. In the city of Almaty with the use of such foundations, over 40 houses with a height of 2–16 floors (brick, large-panel, frame-brick) were built. The system based on a frame on kinematic foundations with magnetic dampers was implemented during the construction of 3-storey cottages in the suburbs of Shymkent. As an active seismic isolation system, the use of a platform robot is proposed. This combination is very promising, as it allows you to perform detuning from the frequency characteristics of the seismic impact. As a scientific facility in Almaty, there is a seismic isolation polygon consisting of three nine-storey large-panel buildings differing in the design of the foundations. A building with a conventional ribbon foundation, a building with a seismic-isolating kinematic foundation and a building with fluoroplastic gaskets were built. All buildings are equipped with sensors, which in real time allow you to get information about the reaction during earthquakes of varying intensity. Currently, it is planned to build buildings of schools and hospitals in the city of Almaty only with the use of seismic isolation systems.