Analysis of Seismic Motion for the Bound Pile System under Instrumental Accelerogram

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Rubric:     Theoretical and experimental studies   
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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)