Research on key points and process application of old PHC pipe pile pulling construction technology
This study focuses on the problem of old PHC pipe pile removal encountered in the dock extension and supporting engineering of LNG high-end equipment product upgrading and renovation projects,and explores the technical points and process applications of old PHC pipe pile removal construction.By analyzing the engineering overview,geological conditions,and existing pile foundation conditions,this article elaborates in detail on construction preparation,scheme formulation,equipment selection and layout,pile pulling process control,and post pile pulling treatment measures.In particular,the pile pulling technology combining vibration sinking and high-frequency vibration with hydraulic cutting effectively addresses the challenges of pile pulling under dense silt geological conditions.The research results indicate that the development of refined construction plans and strict process control are crucial for ensuring the success of pile pulling work,and also provide reference and inspiration for similar projects.
old PHC pipe pile pulling outconstruction technologyprocess applicationvibration sinking