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Calculation and prediction of ultimate pile load

DONG Qing -hua (Department of Civil Engineering,Wuyi University,Jiangmen529020,China)  
Based on the data from observation of the pile loading test,an objective function was established.Non-linear least square method was used to solve the minimum value of the objective function and further to obtain ultimate pile load.The method can be used not only to calculate the ultimate pile load but also to predict the ultimate pile load.The calculating results of observed data demonstrate that the method is very effective.
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