Construction method drive type major diameter steel pipe pore-creating filling pile

Abstract

The invention relates to the field of building construction, in particular to a construction method used for punching-typed large-diameter steel pipe hole-forming pouring piles, comprising the steps as follows: step 1: hole forming: the large steel pipe with the external diameter of 800-2000mm is adopted for hole-forming; step 2: reinforced cages-arranging: the reinforced cages are arranged inside the large steel pipes; step 3: pouring: concrete is poured into the hole of the reinforced cage after the installation is complete, simultaneously, the hole-forming large steel pipe is pulled out and the pile is formed. The pouring pipe construction method of the invention can replace the construction of manpower excavating pile and the mechanical hole-forming slurry wall-protection pouring pipe with large diameter, and has the obvious advantages of safe structure, greatly improving the bearing capability of single pile, environmental protection in-situ, safe construction, reducing the construction links and saving the engineering cost, etc., compared with the traditional mechanical boring pouring and manpower excavation pouring pipes.

Description

1. Technical field: [0001] The invention relates to the construction field, in particular to a construction method of cast-in-place piles. 2. Background technology: [0002] The traditional construction methods of cast-in-place piles mainly include artificial hole-dug cast-in-place piles and mechanical hole-forming mud wall-protected cast-in-place piles. These two methods mainly have several deficiencies: during the hole-forming process of manual-dug hole-dug cast-in-situ piles, construction personnel are safe to operate. Low performance, the problem of hole collapse that often occurs in the process of mechanical hole forming, the problem of broken piles caused by the permeation of the conduit during the pouring process of the mechanical hole forming underwater conduit, the construction period is long: it takes 10-20 days to manually dig a hole with the same diameter and depth, and the impact It takes 2-5 days to drill a hole, and 2-3 days for rotary mechanical drilling. En...

AI Technical Summary

Problems solved by technology

[0002] The traditional construction methods of cast-in-place piles mainly include artificial hole-dug cast-in-place piles and mechanical hole-forming mud wall-protected cast-in-place piles. These two methods mainly have several deficiencies: during the hole-forming process of manual-dug hole-dug cast-in-situ piles, construction personnel are safe to operate. Low performance, the problem of hole collapse that often occurs in the process of mechanical hole forming, the problem of broken piles caused by the permeation of the conduit during the pouring process of the mechanical hole forming underwater conduit, the construction period is long: it takes 10-20 days to manually dig a hole with the same diameter and depth, and the impact It takes 2-5 days to drill a hole, and 2-3 days for rotary mechanical drilling

Environmental protection issues: the use of mechanical drilling (drilling) piles requires mud wall protection to form holes for cast-in-place piles. Because the mud wall protection produces a certain thickness of sediment after the hole is formed and cleared, the manual digging pile requires concrete protection walls, resulting in mud problems, which is not environmentally friendly.

It can solve the problems of manual digging depth limitation and mechanical hole forming depth limitation. The pile diameter is generally 600mm immersed pipe grouting pile, and the current steel pipe wall is relatively thin, which is one-time use and the cost is high

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