Gaipov S.K.
Gaipov S.K.

Gaipov S.K.
соискатель, ЦНИИСК им.В.А.Кучеренко, Москва


Publications

Studies of the «Pile-In-Pipe» Seismic Isolation System with Inelastic Joints
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"Some results of research on the optimization of specific adaptive seismic isolation «pile-in-pipe» are rendered. It is shown that taking into account the principle of uncertainty information about the parameters of future earthquakes optimal seismic protection systems (from the point of view of minimizing of the horizontal acceleration) which are related to the class of adaptive systems that are capable to reconstruction (selftuning) of the dynamic characteristics in the process of intense earthquake. The system of «pile-in-pipe» is a combination of the support of «pile-in-pipe» type in combination with inelastic disables communication. In some situations, the seismological and engineering the system can be very effective.

Elastoplastic Behavior of Trip-Out Metal Beams in the Encased Concrete Pile System
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The results of studies in the “restoring force – displacement” relationship for trip-out metal beam braces are presented. This relationship is required to define parameters in the elastic and non-elastic stages as well as of the beam limit deflection.

Analysis of Seismic Motion for the Bound Pile System under Instrumental Accelerogram
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The paper presents the results of studies in earthquake vibrations of concrete piles. The research was accomplished within the framework of studying seismo-isolating properties of the bound pile system. As a mathematical model of the seismic action the authors used the instrumentally recorded accelerogram of the Gazli earthquake (1976). Non-linearity of the pile deformation was taken into account. Eventually the pile horizontal displacements, velocities and accelerations were obtained. For the adopted correlation of pile parameters and the Gazli estimated accelerogram the ratio of the pile and soil maximum horizontal earthquake accelerations is 0.66. In design of earthquake resistant structures in addition to accelerations the other kinematic parameters will be considered. The paper presents the results of studies in some of the abovementioned effects. These effects are illustrated by the example of using the Gazli instrumental accelerogram (1976)

Elastoplastic Behavior of a Concrete Pile in the “Pile-in-Tube” System under Seismic Effects
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Some results of the research program for optimization of seismoisolation pile-in-tube systems are presented. Various types of these systems are demonstrated. Several parameters of presented systems are responsible for seismic load decrease, such as pile flexibility, depth of the pile end, fuse reserve elements properties, etc. An optimum combination of the mentioned parameters is the main goal of the presented study as well as elaboration and implementation of practical engineering solutions.