deep foundation pit " s optimization design concerns with many factors and all these factors have complicated relationship . its scheme and detail design have hierarchic sequence with discrete design data . for these reasons traditional optimization is not adaptive to foundation pit optimization 基坑支護工程優(yōu)化設(shè)計由于具有涉及因素眾多,各因素之間的關(guān)系復(fù)雜,設(shè)計參數(shù)離散性,方案和細(xì)部呈現(xiàn)層次性設(shè)計等特點,采用傳統(tǒng)優(yōu)化方法進行設(shè)計效果不理想。