Mathematical study on dynamic shear modulus and damping ratio of seashore soft soil

In order to understand dynamic behavior of soft soil, mathematical study on dynamic shear modulus (DSM) and damping ratio is carried out. Based on mechanism of developing process, primary mathematical behavior which DSM model should fulfill is analyzed. What's more, conventional hyperbolic model for DSM is introduced and its shortcoming is signalized. According to the investigated data, a new exponential model for DSM is proposed and new damping ratio formula is deduced, which can well describe dynamic behavior of seashore soft soil. Mathematical relationship between hyperbolic model and exponential model for DSM is proved. Finally, a good accuracy of the new model is proved by two tested data. This research is useful for relative engineering numerical simulation. © 2012 ejge.