Manufacturing method of large-diameter cast-in-situ pile reinforcement cage

Abstract

The invention relates to a manufacturing method of a large-diameter cast-in-situ pile reinforcement cage, which relates to the technical field of construction engineering and solves the technical problems of improving manufacturing precision and work efficiency while reducing labor intensity. According to the projection line of the central axis of the reinforcement cage, the method installs a manufacturing device consisting of multiple rolling support frame assemblies and transmission support frame assemblies, and an openable ring mold assembly is installed on each transmission support frame assembly. The inner wall of the mold assembly is provided with a plurality of positioning grooves for main reinforcement. After the main reinforcement of the steel cage is hoisted into the ring mold assembly, the ring mold assembly is driven to rotate through the low-speed driving gear, so that each main reinforcement enters each main reinforcement positioning groove and is welded with the stirrup ring. Fix it, and then wind and spot-weld the coiled reinforcement while rotating the ring die assembly, so as to realize the mechanized manufacture of the reinforcement cage of the large-diameter cast-in-place pile. The method provided by the invention can realize high steel cage manufacturing precision and cage manufacturing efficiency, can greatly reduce labor intensity and labor quantity per unit of cage manufacturing, and is beneficial to speed up project progress.

Description

technical field [0001] The invention relates to construction engineering technology, in particular to a technology for manufacturing a large-diameter cast-in-situ pile reinforcement cage used for large-scale and super-large bridge pile foundations. Background technique [0002] With the vigorous development of large and super large bridge construction in China, the design diameter of bored piles for main and auxiliary piers of large and super large bridges has been developed from about 2m to 3m ~ 4m. The design diameter of reinforcement) and reinforcement stirrup material is also increased from Φ25~Φ32 to Φ40~Φ50 (Φ50 is the largest diameter specification of rebar produced in China at present), and the weight of a single 12.5m long steel bar is also increased from 48kg~79kg To 123kg ~ 193kg. [0003] Traditional cast-in-place pile reinforcement cages are all made manually. Since the main reinforcement of a single-section reinforcement cage for large-diameter cast-in-place p...

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Problems solved by technology

[0003] Traditional cast-in-place pile reinforcement cages are all made manually. Since the main reinforcement of a single-section reinforcement cage for large-diameter cast-in-place piles has dozens of main reinforcements (for example, for a load-bearing cast-in-place pile with a diameter of Φ4200, the diameter of the reinforcement cage is usually 4m. This reinforcement cage The design quantity of the main reinforcement is generally 60-90), so a large amount of labor is required to carry the steel bars during production, which has the defects of high labor intensity, slow progress of the project, and low production efficiency. The spacing and positioning accuracy between the main reinforcement and the reinforcement stirrup are also poor, and the production quality is not high

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