Site Effect Microzonation of ARDAKAN City

Evaluation of ground response is one of the most important issues is considered in seismic geotechnical. Alongside the earthquake path associated to region soil, generally earth movement in places with soft soil is greater than the movement in places with harder soil. This project seeks to identify local soil condition of ARDAKAN which influences on earthquake wave shake. Therefore after digging of boreholes and doing geotechnical and Down hole geophysical tests, soil layer and their thickness have been determine. Then shear wave velocity and layers density determined. With using these data we developed shake geotechnical models for deferent city regions. Finally earth’s powerful movement parameters have been determined by utilizing density, wave velocity and with using EERA program to equivalent- liner method. This work was repaid for return period of 75, 475 and2475 year. It is fund that northwest region of city has most amplification.