Bracket-free construction method for double-limb thin-wall high-pier tie beam

Abstract

The invention discloses a double-limb thin-wall high pier tie beam support-free construction method which comprises the steps that after a creeping formwork climbs, the top elevation is located at thebottom elevation of the tie beam, the lower chamfer height of the tie beam is reduced, pier body concrete of the section is poured, and after the concrete reaches a certain strength, a hanging beam at the top of the creeping formwork is dismantled; a tie beam lower chamfer section formwork, a tie beam middle section formwork and a tie beam upper chamfer section formwork are installed respectively, then concrete is poured, and then the tie beam upper chamfer section, the tie beam middle section, the tie beam lower creeping formwork operation platform, the transverse bridge direction connectingbeam, the pier column formwork located on the transverse bridge direction side and the tie beam lower chamfer section formwork are dismantled in sequence. According to the method, the problem of repeated mounting and dismounting caused by the fact that all original pier body templates need to be dismounted during high pier tie beam construction is solved; the pier body construction system and thetie beam construction system achieve the fusion effect, no support is needed in the whole tie beam construction process, meanwhile, a formwork integrated platform in pier body construction is utilized, the effect is guaranteed, and the safety guarantee is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method without support for a double-limb thin-walled high pier tie beam. Background technique [0002] When the pier reaches a certain height, it is necessary to set up a tie beam connection between the pier to ensure the overall stability of the pier. At the present stage, the bracket method and floor support method are basically used in the construction of high pier tie beams. [0003] Bracket method: steel rods are pierced in the holes reserved in the pier body, and the section steel platform construction tie beams are built on the steel rods. It is necessary to pre-embed members to form holes in the pier body in advance, and the accuracy of the pre-embedded position is high. The quality of the erection of the steel platform is determined by the quality of the construction personnel. [0004] Floor support method: it takes a long time...

AI Technical Summary

Problems solved by technology

[0004] Floor support method: it takes a long time to erect and dismantle the support; when the pier height is too high, the aspect ratio of the support is too large, which does not meet the safety construction requirements; and the number of support materials used is large, and the construction period is long

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