Application of cone penetration test in estimating the sinking resistance of static pressure pile

Static pressure pile driving is an efficient deep foundation construction technology that plays an important role in the construction of urban central buildings and infrastructure.The prediction of pile driving resistance during static pressure pile driving is of great significance for improving the quality of pile foundation construction,improving construction efficiency,and reducing foundation construction costs.This article is based on the similarity between the cone penetration test and the construction principle of static pressure piles,introducing the dynamic static conversion coefficient k of lateral friction resistance and the comprehensive adjustment coefficientsγ₁ and γ ₂ of pile side and pile end,a predictive function formula for the resistance of static pressure pile sinking based on the cone penetration test method was established,and the calculation parameters were identified.The accuracy and practicality of the model were verified through comparative analysis of actual engineering cases.The results indicate that the estimation method of pile driving resistance based on CPT data can effectively predict the pile driving resistance under different soil conditions,providing reliable technical support for static pressure pile construction.