Bridge high pier construction method

Abstract

The invention discloses a construction method for a high pier of a bridge. The construction method comprises the following specific steps: 1) constructing a bearing platform; (2) pier column steel bar construction; (3) constructing a pier column template; (4) pouring construction; and (5) pier column maintenance. According to the invention, the pier column main reinforcements are connected with the steel pipe frame through the telescopic rods, so that the phenomenon that the reinforcements float upwards when the bearing platform is poured is prevented, and the construction precision of the pier column pre-embedded main reinforcements is improved; an upper-layer reinforcement cage is temporarily welded and fixed through a fixing frame, bracket ribs are arranged on the fixing frame and arranged on the upper portion of a welding seam, one end of a telescopic rod is connected with a hoop lug plate, the hoop lug plate and a hoop body provide a temporary working platform for reinforcement cage welding construction, and the welding construction difficulty of the upper-layer reinforcement cage is lowered; a straining beam hoop formwork supporting system and a steel formwork opposite-pulling self-stabilizing system are arranged on the pier column, and formwork construction is convenient and fast; and a cold joint template is adopted when the concrete is poured for several times, and the over-poured concrete is recycled from the slurry leakage hole, so that the cold joint chiseling construction is reduced.

Description

Bridge high pier construction method technical field The present invention relates to a kind of bridge high pier construction method, is mainly applicable to the high pier construction of urban viaduct. Background technique [0002] With the advancement of the urbanization process, the development of cities is inseparable from highways and bridges, and the construction of highways and bridges has been promoted. Improvement of work level. The increase of vehicles has put forward higher requirements on the quality of highway bridges, and to a certain extent, highway bridges will be higher. The difficulty of pier construction increases. Doing a good job in the construction of high piers has become the top priority of ensuring the quality of the project. High pier construction is an important construction content of highway bridges, and construction will encounter the following construction problems: (1) capping construction The anti-floating effect on the pre-embedded r...

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Problems solved by technology

[0003] The construction of high piers is an important construction content of highway bridges, and the construction will encounter the following construction problems: (1) the anti-floating effect on the pre-embedded reinforcement of pier columns during the pouring construction of the caps, resulting in inaccurate positioning of the main reinforcement of pier columns; (2) vase pier Inaccurate formwork control; (3) Temporary stability problems during temporary welding of the upper reinforcement cage; (4) Cold joint treatment construction; (5) Spraying health maintenance construction for high piers

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