DEEPWATER GROUP PILE FOUNDATION

A deepwater group pile foundation, comprising: multiple drilled piles (100), the cross-sectional shape of pile tops (100a) of the drilled piles (100) being a square provided with an arc chamfer, a first reinforcement cage (103) being pre-embedded at the interior of each pile top (100a), the cross-sectional shape of the first reinforcement cages (103) being the same as the cross-sectional shape of the pile tops (100a), and the first reinforcement cages (103) each comprising multiple first vertical main ribs (103a) arranged at even intervals; a bearing platform (200), the bearing platform (200) being fixed above the drilled piles (100), multiple horizontal steel reinforcing bars (105) being provided in the bottom part of the bearing platform (200), the upper ends of the first vertical main ribs (103a) being vertically inserted into the bearing platform (200), and the horizontal steel reinforcing bars (105) within the width range of the first reinforcement cages (103) each passing through gaps between two adjacent first vertical main ribs (103a); and bottom sealing concrete (300), the bottom sealing concrete (300) being located within the height range of the pile tops (100a) below the bearing platform (200).