Rolling ball type concrete pouring structure and method for overground large special-shaped stiff column

Abstract

The invention relates to the technical field of concrete pouring of the construction industry, in particular to a rolling ball type concrete pouring structure and method for an overground large special-shaped stiff column. According to the method, a flexible pouring guide pipe is connected in series with a steel wire through small steel rings in a full-length mode, through the dead weight of a concrete ball, the flexible pouring guide pipe is released to the bottom of the special-shaped column in a rolling mode along string pipes located on the inner wall and inflection point portions of a column body by means of the steel wire, and then a top connecting opening of the guide pipe is connected with a discharge outlet of a hopper or a pump pipe; and in the pouring process, the burying depth of the discharge outlet of the guide pipe is kept until pouring is completed. According to the structure and method, the guide pipe is adopted for pouring construction, the concrete pouring conveying path is independent and is prevented from being separated due to space blocking of steel bars, steel ribs and the like in the column body, and the blending quality and performance of concrete in the pouring position are guaranteed. Tower crane hopper feeding, or mechanical pumping or other ways can be flexibly selected for column body concrete pouring according to field conditions, so that the efficiency of column body concrete pouring is improved.

Description

technical field [0001] The invention relates to the technical field of concrete pouring in the construction industry, in particular to a concrete pouring structure and method suitable for various types of conventional or special-shaped rigid columns with large steel content and complex internal structures. Background technique [0002] At present, large-scale commercial projects and public facilities are displayed around people's lives like a spring. While pursuing large volumes and large spaces, they are constantly innovating and creating new ones, strengthening the recognition of buildings in terms of structural design and architectural forms, and striving to Competing for the image of the city's central landmark, the resulting rigid structure has become the new favorite of this type of architectural design. In order to improve the load-bearing capacity of such vertical space load-bearing members and control the resulting technical defects of large cross-section and heavy ...

AI Technical Summary

Problems solved by technology

[0003] However, in the construction of specific projects, for concrete-filled steel pipe columns, due to the high welding height of the single-stage hoisting and welding, and the shear bolts and stiffeners are covered in it, the conventional chute or string can only be placed on the top of the column. The grouting port is placed at a high level, and the concrete is prone to segregation during the pouring process. The compactness and quality of the column concrete pouring cannot be guaranteed, which seriously affects the design bearing capacity of the steel reinforced concrete column; Finally, the steel frames, studs, and steel bars in the cylinder are densely arranged. Under the conventional column top pouring process, the sandstone cement is easily broken up by the steel frames and steel bars in the process of falling by its own weight. , severe segregation occurred, and even caused serious quality defects such as hollow concrete, honeycomb, interception, etc., especially in the pouring construction of various Y-shaped, inverted cone-shaped and other special-shaped rigid columns, which greatly affected the concrete survival quality

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