Abstract：The large-diameter tubular pile foundation with interaction force-dependent sinkage is the authors' independent research and development of a new type of pile foundation. The use of the whole new pile method and the pile into a pile process—first decompose and then connect, alternately sink—breaks the traditional pile models, which requires objects to overcome in the process of pile throughout the pile integrity. This solves the problem of making large-diameter concrete, thin-walled, hollow piles. This type of pile is Φ3～15 m in diameter, more than 100 m in length, and the wall thickness is 1/20 of the diameter. The piles can be constructed in anhydrous stratum, aquifer and deep water conditions, and can be widely used in bridge engineering, water conservancy port works, construction, marine engineering and various shafts.
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