Combined concrete formwork system and construction method thereof

Abstract

The invention belongs to the technical field of mass concrete crack control, and particularly relates to a combined concrete formwork system and a construction method thereof. The combined concrete formwork system and the construction method thereof aim at controlling mass concrete cracks. The combined concrete formwork system comprises a bottomless box body and a power system, wherein the front side wall, the left side wall and the rear side wall of the bottomless box body are all fixed; the right side wall of the bottomless box body is close to or away from the bottomless box body under the action of the power system; the right side wall comprises an upper steel mold and a lower water stop rubber strip which are fixedly connected; sliding assemblies and matched power systems are symmetrically arranged at the two ends of the top of the upper steel mold in an overhanging mode, so that the right side wall slides on sliding rails at the tops of the front side wall and the rear side wall, the deformation of concrete is controlled and absorbed through the displacement f(x), the temperature stress in the concrete is eliminated, and the concrete is prevented from cracking; and meanwhile, the left displacement f(x) max of the right side wall on the characteristic front side wall and the characteristic rear side wall is controlled through the displacement f(x), and the structure size of the concrete can be effectively ensured to meet the design requirement.

Description

technical field [0001] The invention belongs to the technical field of large-volume concrete crack control, and in particular relates to a combined concrete formwork system and a construction method thereof. Background technique [0002] With the continuous development of concrete structures towards higher heights and larger spans, the size of concrete structures is also increasing, which makes the temperature rise faster and faster during the concrete pouring process, and the peak temperature is also higher and higher , leading to the continuous increase of temperature stress and internal stress concentration phenomenon, once the stress is not released, cracks will be generated inside the concrete, which will lead to cracking of the concrete, which is especially prominent in the pier structure. [0003] At present, the formwork used in concrete pouring is generally fixed according to the design structure size, so that the internal temperature stress of the concrete cannot b...

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Problems solved by technology

[0003] At this stage, the formwork used in concrete pouring is generally fixed according to the design structure size, so that the internal temperature stress of the concrete cannot be released, and it is easy to cause concrete cracking

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