Abstract: The main reinforcing bars of a pre-stressed high performance concrete pipe pile (PHC) are made of high-strength and low-relaxation steel bars, which have a high strength, good bending properties and cracking resistance. The concrete strength of the pile is high, and the structural capacity of a single pile is also high. The pile has a good corrosion resistant performance, so that it has a wide range of design and selection, suitable for a various of soils. This type of pile has the advantages of short construction period, and environmentally friendly. This paper presents an application of the PHC pipe pile in the soft mucky silty soft soil in Tianjin. Approaches of selecting appropriate pile type and length are provided. The soil plug effect of the pipe pile on the axial pile resistance is also considered in the pile. The static pile loading tests and the integrity testing have confirmed that the PHC installation was satisfactory.

Key words: PHC Pipe Pile, Mucky Soft Soil, Soil Plugging Effect, Axial Capacity