Construction process for implanting composite section hollow pile by pouring filling mortar into expanded guide hole

Abstract

The invention provides a construction process for implanting a composite section hollow pile by pouring filling mortar into an expanded hole. The expanded hole penetrates through a hard rock-soil layer of strongly weathered and moderately weathered rocks, the hollow pile is implanted with the filling mortar, and an annular gap is filled with shock excitation dumping soil, so that the composite section hollow pile with a tubular pile inner ring and a filling outer ring is formed. The expanded hole is matched with the large-diameter hollow pile to form the large-diameter composite section hollow pile, the problems that the prefabricated pile is small in section, poor in stability, limited in set depth and end bearing condition, insufficient in bearing capacity and the like are solved, and the large-diameter composite section hollow pile can be applied to bridge pier and abutment pile foundations with unbalanced loads and complex properties and is quite wide in application prospect.

Description

technical field [0001] The invention belongs to the construction category of pile foundation engineering and foundation treatment, and more specifically relates to a drilling rig that fills the diversion hole with filling mortar, implants prefabricated pipe piles to discharge slurry (mortar) and fills the annular gap of the pipe pile diversion hole, forming a Hollow pile with composite cross-section of tubular pile inner ring and filled outer ring. The field of engineering application is very wide. Background technique [0002] Prefabricated pipe piles and their splicing technology conform to the characteristics of modern intensive assembly construction, but it is difficult for prefabricated pipe piles to pass through hard rock and soil layers such as weathered rocks, and there are environmental adverse factors such as serious soil discharge effects in pile sinking settings, which seriously restrict engineering applications. [0003] In recent years, in the construction of ...

AI Technical Summary

Problems solved by technology

However, when encountering moderately weathered rock and other hard rock and soil layers, the above-mentioned small hole energy dissipation method is actually difficult to achieve the expected effect

[0004] In view of the above-mentioned existing problems, the present invention proposes the construction technology and application type of hollow piles with prefabricated tubular piles by pouring filling mortar into prefabricated pipe piles, and there are no related documents, reports and regulations.

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