Study on the Relationship between the Jacking Force of Static Pressure Underpinning Pile and the Bearing Capacity of Single Pile
Jacked pile underpinning technology is one of the common methods for foundation reinforcement of existing buildings.It has the advantages of intuitive bearing capacity,reliable bearing capacity and remark-able reinforcement effect.It is very important to estimate the bearing capacity of a single pile according to the ultimate pressure of the underpinning pile for the optimum design of the underpinning pile.Based on the L-M optimization algorithm,the paper established the fitting formula between the bearing capacity of single pile and the end pressure of the pile Quk=1.543L/2.39+L Rsm.The accuracy and accuracy of the single pile bearing capacity estimated by L-M optimization algorithm are better than those predicted by traditional meth-ods,it can provide reference and reference for the optimum design and construction monitoring of static pres-sure underpinning pile in loess area.
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