Construction method of stiff skeleton variable cross-section thin-wall hollow high pier

Abstract

The invention relates to a construction method of a stiff skeleton variable cross-section thin-wall hollow high pier. The construction method comprises the following steps: 1) carrying out construction preparation; (2) carrying out pre-embedded steel bar position correction; (3) laying a construction hanging bracket; 4) arranging a stiff skeleton; (5) erecting a climbing formwork; (6) pouring high pier concrete; and (7) carrying out concrete closed curing. The method has the beneficial effects that the direction and the position of the embedded steel bar can be corrected through a correcting bolt on a correcting hoop; the three-direction position control of the construction hanging bracket is realized; the lifting control of the height of the construction hanging bracket is realized; the pulling resistance of subsequent anchoring connecting ribs is improved, and the difficulty of positioning longitudinal ribs of a reinforcement cage is reduced; the anchoring connecting ribs and the embedded bolts are convenient to connect so that the difficulty of connecting the sliding rails and erecting a high pier internal mold is reduced; the accurate control on the pipe burying height of the concrete filling pipe is realized; and an elastic outer hoop and an elastic inner hoop are adopted to limit the leakproofness of an outer closed bag and an inner closed bag so that the layout difficulty of the maintenance bag is reduced.

Description

technical field [0001] The invention relates to a construction method of a thin-walled hollow high pier with a rigid skeleton variable cross-section, which can improve the stability of the construction structure, reduce the difficulty of on-site construction, and improve the quality of concrete pouring and maintenance, and is suitable for high pier construction projects. Background technique [0002] With the vigorous development of our country's transportation and the increasing progress of bridge engineering, modern bridges are gradually developing in the direction of long-span, and a series of high-pier bridges have emerged. Compared with conventional bridge piers, the construction of high piers often has difficult problems such as difficulty in setting and positioning formwork support, difficulty in binding and positioning steel cages, and difficulty in controlling the quality of concrete pouring and maintenance. [0003] There is a climbing formwork construction method ...

AI Technical Summary

Problems solved by technology

Although this operation method solves the problem of construction safety and reduces the construction cost to a certain extent, there are still some improvements in improving the stability of the construction structure, reducing the difficulty of on-site construction, and improving the quality of concrete pouring and curing.

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