Creep Constitutive Model Building and Practical Research of Geosynthetics

The choice of geosynthetics creep constitutive model is the core problem to determine its creep properties. A 7-parameters geomembrane creep cascade model was raised based on the analysis of several common current cascade models. The geomembrane creep model and model parameters are identified, based on the genetic algorithm toolkit of MATLAB to perform calculation and solve model. And it is valid to identify the geomembrane creep model by using cascade model and genetic algorithm according to examples, which provides a new method to build the creep constitutive model of geosynthetics.