Construction formwork of cantilever layer outer wall preformed hole, and construction method

Abstract

The invention discloses a construction formwork of a cantilever layer outer wall preformed hole, and a construction method. The construction formwork comprises upper plates arranged side by side. The lower ends of the upper plates are detachably connected with small jointed boards 2. The junction ends of the upper plates and the small jointed boards are provided with butt joint platforms. After taper pins pass through holes on the butt joint platform, taper pin sheets are inserted into conical grooves on the lower ends of the taper pins, so that the upper plate and the small jointed board are detachably connected. The position of the lower end of the upper plate, where a preformed hole is needed, is provided with a wooden box. The formwork can be used as a standard formwork, and provides convenience for preformed hole construction, and has a dual-purpose function. The formwork uses the wooden box to fill the preformed hole, foam pre-embedding in a conventional method is replaced, so that problems in the conventional construction method of offset and deformation of the preformed hole, and floor foam pollution are solved. The construction formwork ensures the size of the preformed hole can satisfy requirements of construction.

Description

technical field [0001] The invention relates to a construction formwork and a construction method for a reserved hole in an outer wall of a cantilevered layer, and belongs to the technical field of building formwork construction. Background technique [0002] In the promotion and use of aluminum alloy formwork, the combination of integral climbing outer frame can often better cooperate with the construction of building exterior walls. However, due to the high rental cost of integral climbing outer frame, the construction site usually uses steel pipe outer frame with aluminum alloy formwork construction. When the steel pipe outer frame is used for construction to the cantilevered layer of the outer frame, holes for channel steel must be reserved at the bottom of the outer wall shear wall. In the traditional construction method, foam is pre-embedded at the bottom of the shear wall of the exterior wall, and the holes are hollowed out after the formwork of the exterior wall is ...

AI Technical Summary

Problems solved by technology

On the one hand, due to the light weight and insufficient strength of the foam, deviations and deformations often occur during the vibrating construction of the wall column concrete, which cannot meet the size and positioning requirements of the reserved openings, and the small-sized openings need to be adjusted later. Gouging, and the pre-embedded foam needs to be hollowed out, which will produce a large amount of fragmented foam debris on the floor that is difficult to clean up; on the other hand, due to the requirements of the construction process, it is necessary to stay on the outer frame for the construction of the cantilevered frame , which not only increases the workload of the construction of the outer frame, but also affects the progress of the construction

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