The Design Method and Application of Anti-slide Pile Based on the Nonlinear TheoryXIA Yuan-you~1,ZHENG Xiao-yan~1,LI Mei~2,SUN Xi-min~3(1.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;2.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;3.Xianglin Road Construction Administrative Headquarter of Yunnan Provirce,Midu 675600,China)According to the nonlinear theory,the text eatables the formula about the optimized design of anti-slide pile and achieved the optimization design of it by the Fmincon function from the optimization box of Matlab.The anti-slide pile optimization design results of the Xianglin 2nd grade road in Yunan province showed that: the cost can be reduced by 39.02% in comparison to the original project.In the meantime,the process analysis incarnated the facility of the optimization box of Matalab.anti-slide pile;optimization;optimization box of Matlab