Super-large-diameter assembled hollow pile and assembling method thereof

Abstract

The invention discloses a super-large-diameter assembled hollow pile and an assembling method thereof. The hollow pile comprises a plurality of arc pile pieces, the pile pieces are assembled in the annular direction to form sealed annular assembled pile sections, and the annular assembled pile sections are assembled in the axial direction of the pile sections to form the assembled hollow pile. Assembling seams in the adjacent annular assembled pile sections are staggered. The adjacent pile pieces are connected through cooperation of tenons and grooves and are further connected in an enhanced mode through high-strength bent bolts. The pile pieces are connected in series through prestressed anchor cables in the axial direction, and the pile pieces are also connected in series through prestressed anchor cables in the annular direction. The super-large-diameter assembled hollow pile is formed by assembling the pile pieces which can be prefabricated in a factory and are connected and assembled through the prestressed anchor cables on a construction site to form the whole pile body, and compared with traditional prefabricated pile sections which are laid down overall and cast is place informed holes, storage and transportation are convenient. Moreover, each pile piece can be prefabricated to have different heights and widths according to the pile diameters, so that flexibility is high.

Description

technical field [0001] The invention belongs to the field of pile foundation construction technology, and in particular relates to a super large-diameter assembled hollow pile and a splicing method thereof. Background technique [0002] At present, the application of pile foundations in my country's highway bridges is mainly based on large-diameter piles, and the development trend of the foundation is: in the pile diameter, the development of large-diameter piles larger than 0.8m in the traditional sense to super-large-diameter piles above 2.5m; In terms of structure, it develops from caps to no caps; in section, it develops from solid piles to hollow piles; in number of piles, it develops from multiple rows of single or single row piles. Due to the special structure of super-large-diameter hollow piles, its construction technology is greatly affected by its size. At present, the construction of super-large-diameter hollow piles includes two technologies: prefabricated pile ...

AI Technical Summary

Problems solved by technology

[0003] (1) The prefabricated pile section assembly technology has problems such as the size of the pile section is too large to be transported and assembled;

[0004] (2) The hole-forming cast-in-place technology has problems such as difficulty in supporting the formwork, difficulty in pouring the bottom of the pile, and excessive heat of concrete hydration

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