Coaxially-nested multi-section prefabricated tube pile and construction method thereof

Abstract

The invention discloses a coaxially-nested multi-section prefabricated tube pile and a construction method thereof. The coaxially-nested multi-section prefabricated tube pile comprises a first section of a prefabricated tube pile and a second section of a prefabricated tube pile, wherein the outer diameter of the second section of the prefabricated tube pile is smaller than the diameter of an inner hole of the first section of the prefabricated tube pile, the second section of the prefabricated tube pile penetrates through the first section of the prefabricated tube pile, and the bottom end of the second section of the prefabricated tube pile extends out of the bottom end of the first section of the prefabricated tube pile; alignment limiting devices used for limiting the second section of the prefabricated tube pile are arranged on the inner wall of the first section of the prefabricated tube pile or the outer wall of the second section of the prefabricated tube pile along a length direction, and the alignment limiting devices are circumferentially uniformly arranged along the first or second section of the prefabricated tube pile; and a filling material is filled into a gap between the walls of the first section of the prefabricated tube pile and the second section of the prefabricated tube pile. According to the invention, multiple sections of deeper prefabricated tube piles are coaxially nested and sunk into the prefabricated tube piles in sequence, so that pile sinking resistance and piling noise can be reduced, sinking construction of long piles can be facilitated, the bearing effect of a soil layer on the piles can be remarkably improved, pile materials are saved, and the cost is reduced.

Description

technical field [0001] The invention relates to foundation engineering and structural engineering, in particular to coaxial nested multi-segment prefabricated pipe piles in soft ground and underwater pile foundation engineering and a construction method thereof. Background technique [0002] Prefabricated concrete pipe piles are usually used in soft ground and underwater pile foundation projects to improve the bearing capacity of the soil layer. [0003] Existing prefabricated concrete pipe piles, such as "a prestressed concrete steel pipe composite pile and its production and construction method" disclosed in Chinese patent application number CN200610112145.6, relate to a prestressed concrete steel pipe suitable for percussion pile sinking The composite pile and its manufacturing method are characterized by inserting a steel pipe with a larger diameter into the finished prestressed concrete pipe pile, connecting the steel pipe and the finished prestressed concrete pipe pile...

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned existing prefabricated pipe piles have the following problems: the longitudinal axis alignment between the inner and outer nested and laminated concrete pipe piles or steel pipe piles is not considered, and the mechanical properties of the coaxial nested and laminated components cannot be guaranteed

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