چكيده به لاتين
In analyzing and designing structures, especially against earthquakes, it is important to take the interaction between foundations and structurs, into account. The diffustion of waves from the collision with the foundation affects the ground response at the base of the structure and causes tension in the foundation. Such phenomenon is called kinematic interaction. On the other hand, the response of the structure is influenced by the foundation and in it's own way the inertial forces obtained from the structure response of the tensions affect the foundation components. Such phenomenon is called inertial interaction.
As long as the force causing the slip at the contact surface of the pile and soil is less than the resisting force, the two contact surfaces are attached to each other and stick together, when the values of these two forces are equal, the phenomenon of slipping occurs between the two levels but they are still connected, with the changing conditions (the presence of large inertial forces in the soil around the pile, etc.) and the slipping force is increased against the frictional force, the surface of the contact between the pile and the other soil is not connected and the phenomenon that occurs is called separation.
The present thesis examines the problem of the effects of kinematic and inertial interaction on the response of seismic single piles by physical modeling with a jet machine along with numerically verified models based on the results of experiments. As the main objective of this thesis in the next section, numerical simulations have been done on parametric studies on various variables that affect the response of shivering of piles.
The parameters studied in this study are soil profile, sliding and separation, pile head condition. Based on experimental studies and numerical modeling, it was concluded that the amount of internal forces (anchor and shear force) along the pile is the function of the parameters mentioned, so general recommendation is to consider these parameters in seismic design.
Keywords: seismic response of single pile, kinematic and inertial interaction, sliding and separation, physical modeling, numerical modeling
