Generalized Energy-based PWP Generation Model

This model allows for a user-defined excess pore water pressure generation model based on the framework adopted from Berrill and Davis (1985) and Green et al. (2000). The model is energy-based and the excess pore water pressure is calculated as follows:

Eq. 1

The model is a generalized form of GMP model, and uses the same general functional form presented in the Berrill and Davis (1985) formulation. α and β are curve fitting parameters and can be extracted from laboratory tests. 𝑊_𝑠 is the dissipated energy and is calculated using the formulation defined in the GMP model.

The degradation parameter is as described by Matasovic (1993) and uses the same functional form as defined in the Matasovic model for sands (see the Porewater Pressure Degradation Parameters topic).

Table 1: Description of Generalized Model Parameters

VARIABLE	DESCRIPTION
α	Curve fitting coefficient
β	Curve fitting parameter
𝑊𝑠	Normalized dissipated energy per unit volume of soil
v	Degradation parameter