Annular pile support structure

An annular pile support structure comprises a water-proof curtain pile (1) annularly arranged, one row of support suspension piles (2) annularly arranged and located at the inner side of the water-proof curtain pile, sleeve piles (3) arranged between the adjacent support suspension piles, a crown beam (4) connected to the top ends of the whole row of support suspension piles (2), an upper support ring beam (5) connected to the middles of the inner sides of the support suspension piles and a lower support ring beam (6), and the annular support structure is formed by the interconnection of the connectors of the support suspension piles (2), the sleeve piles (3) between the support suspension piles, the crown beam (4), the upper support ring beam (5) and the lower support ring beam (6). The annular pile support structure is high in flexural rigidity and suitable for occasions with soft soil bases or large digging depth or small foundation pit area in construction sites, and a support system does not need to be a