Composite Model for Dynamic Pore Water Pressure Developing Process of Soft Soil under Cyclic Loading

 X. J. Ma, W. Wang, N. Li, X. J. Song, H. B. Xu,

“Composite Model for Dynamic Pore Water Pressure Developing Process of Soft Soil under Cyclic Loading”, Journal of Mechanical Engineering Research and Developments,

ABSTRACT: Dynamic pore water pressure developing process (DPDP) is an important issue in soft soil dynamic mechanic study. Based on soft soil dynamic pore pressure development mechanism, its basic behavior was analyzed, and four properties that its mathematical model should meet were presented. Relationship between hyperbolic model and exponential model was investigated by using Taylor series expansion. A three-parameter composite model of dynamic pore pressure development was proposed. Mathematical analysis shows that the exponential model and hyperbolic model are the special cases of the new model. Finally, correctness of the composite model was verified by measured data of both disturbed and undisturbed soil.

Keywords: Dynamic pore water; Soft soil; Composite model.