Evaluation on Effect of Modulus of Elasticity, Shear Modulus, Damping Ratio and Shear Wave Velocity on Soil Dynamic

The purpose of this paper is to evaluation the dynamic parameters of soil including damping ratio, shear modulus, elasticity modulus, and investigation of shear wave velocity in different sections, acquaintance with the methods of measuring each of these parameters and the effect of different conditions on these parameters. The research method is an overview of sources and references on soil dynamic parameters including damping ratio, shear modulus, modulus of elasticity and shear wave velocity. According to the results of this study, soil structure has a direct effect on soil dynamic properties and with increasing shear wave velocity the bed soil becomes harder and quality of soil will be better. Almost all construction projects are built on soil, so correct recognition of soil and identification dynamic parameters behavior of soil can be effective to providing a safe and economical design. Among the dynamic properties of soil, shear modulus, damping ratio and modulus of elasticity are more important and also there are various methods for measuring these parameters.