Prefabricated skirt type pipe pile used for drainage and added with pile body inclined support and construction method thereof

Abstract

The invention discloses a prefabricated skirt type pipe pile used for drainage and added with a pile body inclined support and a construction method thereof. The prefabricated skirt type pipe pile with a perforated pile body is provided with multiple laps of rectangular through hole structures on the side wall at intervals in the axial direction of the pile, wherein the multiple laps of rectangular through hole structures comprise rectangular through holes uniformly distributed in the peripheral direction of the pile body at intervals; prefabricated concrete blocks are hinged and mounted at the tops of the rectangular through holes; and the external of the prefabricated skirt type pipe pile is coated with geotextile. The pipe pile is planted in a soil mass through static pressure; water in soil around the pile is drained after entering an inner pipe through the geotextile and gaps; the prefabricated concrete blocks outwards expand by angles, and the expansion angles are increased through secondary pressing and beating; such fillers as gravels are filled and compacted; and a gravel cushion layer and a grid can be filled back, or a pile bearing table can be arranged after levelness. The pile increases the pile surrounding resistance force through drainage; the concrete blocks are spread to provide lateral support force; the vertical bearing capacity can be greatly improved; the pile body settlement is effectively reduced; and the pile can be suitable for the foundation treatment under complicated geological conditions, can serve as an engineering pile after secondary pressing and beating, is free of construction noise and slurry pollution, and is low in ground disturbance.

Description

technical field [0001] The invention belongs to a pipe pile and a construction method thereof, in particular to a prefabricated skirt pipe pile with drainage and additional pile body oblique support and a construction method thereof in the technical field of civil engineering construction. Background technique [0002] With the continuous expansion of the scale and scope of engineering construction, the corresponding engineering geological conditions are becoming more and more complex. For example, the foundation treatment of soft soil in the eastern coastal areas, the foundation treatment of sea reclamation projects, and the foundation treatment of high-speed railways. The first two of these foundation treatment projects are soft soil foundations, and the foundation bearing capacity obtained by conventional foundation reinforcement is difficult to meet the requirements; the latter is a special project that requires small foundation settlement. In the foundation treatment u...

AI Technical Summary

Problems solved by technology

Although the traditional flexible pile composite foundation is cheap, the strength of the pile body is low, the reinforcement depth is limited, and the settlement control and bearing capacity are difficult to meet the requirements; although the rigid pile body has high strength and a large reinforcement depth, if the settlement is controlled, the depth and depth must be increased. pile diameter, thereby greatly increasing the cost of foundation treatment; while the newly developed large-diameter cast-in-place concrete pipe pile (PCC pile) combines the advantages of the above two piles, but has limited bearing capacity, limited settlement control and construction Disadvantages such as mud pollution in the process

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