Microbial solidified soil constitutive model parameter identification method

Abstract

The application discloses a kind of microbial solidified soil constitutive model parameter identification method, belong to the field of computing geotechnical engineering and intelligent optimization algorithm.The method includes building the constitutive model of microbial solidified soil containing moving normal consolidation line MNCL, building error objective function, using improved radial moving algorithm for parameter inversion, obtain the optimal to be identified parameter vector, complete the identification of to be identified parameter.And in the improved radial moving algorithm, introduce "greedy selection" mechanism, solve the problem that particle update is easy to accept inferior solution and lead to convergence oscillation, significantly improve the optimization stability and precision.Parameter identification problem.In addition, for multiple confining pressure data, propose hierarchical decoupling strategy, using the identification method of the application respectively identifies confining pressure sensitive parameter and the intrinsic parameter of material.The application realizes the high-precision, automatic identification of the complex mechanical behavior model parameters of microbial solidified soil, overcomes the defects of traditional method.

Images