Analysis Of Influence Of CFG Pile Composite Foundation On Settlement Of Bridge Foundation

With the rapid development of China's roads and bridges,the phenomenon of bridgehead jumping is common.The problem of bridgehead jumping is a common quality problem in the construction of soft soil-based roads.This article describes the reasons for the emergence of the bridgehead jump,and made corresponding treatment measures.In this paper,the CFG pile composite foundation is mainly used to treat the foundation of the transition section of the road and bridge,and the advantages of the CFG pile composite foundation method are also reflected.In this paper,based on a project example,a two-dimensional solid model of CFG pile composite foundation is established by finite element software ABAQUS.Firstly,the simulation scheme is planned,and then the influence of pile on foundation settlement is studied through various schemes.In this paper,the influence of different crucible thickness and modulus on foundation settlement is analyzed by calculation model.The suitable cushion thickness can be analyzed and the suitable cushion modulus can be analyzed.The different pile lengths,pile spacing and The influence of pile modulus on foundation settlement can correctly find the bearing layer,determine the reasonable pile length,and design the appropriate pile spacing.The CFG pile composite foundation is used to treat the deep soft foundation of the highway bridge head with the same address conditions as the project.Combined with the research law,a reasonable design scheme can be determined,which can reduce the engineering investment,effectively reduce the settlement and achieve the purpose of solving the bridgehead jump.