Research on the Application of Prestressed Concrete Pipe Piles in Soft Soil Foundations of Highways
In order to solve the issues of poor bearing capacity of soft soil foundation in highway reconstruction and expansion projects,this paper adopts prestressed concrete pipe pile for soft foundation reinforcement.Through the research and analysis of the application of prestressed concrete pipe pile in soft soil foundation,the results show that:The bearing mechanism of a single pile under vertical load is mainly affected by its own weight and lateral earth pressure.Using prestressed technology can enhance the bending resistance of the pile and improve the bearing ca-pacity.The main factors affecting the bearing capacity of single pile include pile diameter,pile length and prestress level,among which pile diameter and pile length are the key factors affecting the bearing capacity.The static pres-sure pile is to sink the pile into the soil through the external static pressure to form friction resistance and end resis-tance,so as to improve the bearing capacity of the pile.Through systematic analysis,the application and construction technology of prestressed concrete pipe pile in soft soil foundation can be better understood,and providing reference for engineering practice.
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