Abstract
Specific to the status quo of geotechnical engineering that there is larger deviation between the material mechanics parameters determined indoor or in situ test and practical parameters, the independently developed intelligent back analysis program was applied to back analyze the mechanical parameters of surrounding rock and foundation based on the elasticplastic finite element and difference evolutionary(DE) algorithm. The principle, steps and implementation process were introduced, and the influences of the mutagenic factor F, the cross factor CR and the difference strategy on the precision and convergence speed of the back analysis were analyzed. Result shows that the proposed parameter inversion method has good reliability and optimal capability, which has wide application prospect.
Key words
geotechnical engineering /
mechanics of materials /
parameters /
back analysis /
inversion accuracy /
velocity of convergence /
difference evolutionary algorithm
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Tala，JIANG An-nan，WANG Jun-xiang，GUAN Wen.
Intelligent back analysis of mechanical
parameters based on difference [J]. Journal of Dalian Maritime University. 2014, 40(3): 131-135
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