Main tower column construction process

Abstract

The invention discloses a main tower column construction process. The process comprises the following steps that a main tower column is divided from bottom to top into two construction sections, and the construction sections comprise a first construction section at the bottom and a second construction section above the first construction section; the first construction section conducts tower column construction by erecting a frame; the second construction section conducts tower column construction by erecting a stiff skeleton, the stiff skeleton constitutes an overall reinforcing bar structureof the second construction section of the tower column, the circumferential side of the stiff skeleton is composed of a plurality of interconnected reinforcing bars, and the inner side of the stiff skeleton is provided with steel strand installation space; a hydraulic climbing mold and formworks are reinforced, a plurality of the inner and outer formworks are arranged along the outside of the stiff skeleton, the inner and outer formworks are fixed by bolts, and a casting cavity is formed between the outer formwork and the stiff skeleton; a concrete is poured, and the concrete is poured between the inner and outer formworks to form a thin-walled tower column. The above process is adopted, the construction is convenient, the positioning is easy to operate, and a temporary steel frame is notrequired to be installed.

Description

technical field [0001] The invention mainly relates to the technical field of tower column construction, in particular to a main tower column construction process. Background technique [0002] The main tower column of Zhaohua Bridge adopts a large curved lotus shape consisting of an outer curve radius of 325m and an inner curve radius of 270m and 300m. And it is a large-volume concrete project, the construction time spans winter, and the concrete crack control construction is very difficult; the construction of the tower column adopts hydraulic climbing formwork construction technology, and because the overall tower column is curved, the difficulty of climbing formwork construction is greatly increased; Vertical prestressed steel strands, the longest single strand is 52.54m, and the heaviest is about 6t. [0003] For tower column construction, it is necessary to make the vertical steel strands basically vertical before construction can be carried out. Due to the large leng...

AI Technical Summary

Problems solved by technology

[0004] The installation of temporary steel brackets not only consumes materials and labor, but also belongs to high-altitude operations, which is highly dangerous

[0005] Conventional bellows positioning uses well-shaped steel bars to transfer the weight of bellows and steel strands to the steel frame. This process requires that the steel bar frame be installed before the bellows can be positioned. Only the well-shaped steel bars have a force point. For the wall The tower column is only one meter thick. The bellows positioning operator needs to enter the interior of the steel skeleton to work. The operating space is very narrow and the construction efficiency is extremely low.

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