Reverse landing conversion construction method for profile steel cantilever scaffold

Abstract

The invention discloses a reverse landing conversion construction method for a profile steel cantilever scaffold. The method comprises the following steps that the profile steel cantilever scaffold iserected, an adjusting nut of an adjustable base is adjusted downwards, cantilever profile steel is removed, a floor scaffold is erected, floor scaffold vertical rods are connected with cantilever scaffold vertical rods, and a scaffold body is perfected step by step. The profile steel cantilever scaffold is converted when foundation pit backfill is completed, and during conversion, sequential conversion is adopted, the cantilever profile steel is removed one by one and vertical rods on the cantilever profile steel are connected one by one. According to the construction method, the working faceof a foundation pit unbackfilled trench is not occupied in the early stage, the profile steel cantilever scaffold with the height of 1 to 2 stories and not larger than 9 m is directly erected, and after backfill of the underground foundation pit is completed, the floor type scaffold is still used on the premise that the original profile steel cantilever scaffold does not need to be detached. Therefore, the foundation pit backfill progress is not affected, the construction period is shortened, and the problem that holes are repeatedly formed in a building outer wall when all scaffolds used arecantilever type profile steel scaffolds.

Description

technical field [0001] The invention relates to the field of building exterior wall scaffolding, in particular to a reverse landing conversion construction method of a section steel cantilevered scaffolding. Background technique [0002] In the construction of multi-high-rise civil buildings, buildings with underground structures are often encountered. There are two common options for the erection of exterior wall scaffolding. The first type is to erect double rows of floor-to-ceiling scaffolds upwards in the fertilizer tank of the foundation pit during the construction of the underground structure; Pick-up steel scaffolding. [0003] The former floor-to-ceiling scaffolding is convenient for construction, relatively simple to operate, and does not need to leave holes on the wall, but because it is erected in the fertilizer tank of the foundation pit, it will affect the time for backfilling the fertilizer tank of the foundation pit, and even delay the construction period. ...

AI Technical Summary

Problems solved by technology

However, for cantilevered scaffolding, the specification requires that the cantilever height should generally not be greater than 20m. When the cantilever height exceeds 20m, it will generally be erected by multiple segments of the frame body. This method requires multiple holes in the outer wall. , to leave space for the section steel to protrude outward, and the requirements for the accuracy of the position of the prefabricated holes on the exterior wall, especially the prefabricated exterior wall, and the sealing of the holes in the later stage are extremely high, and it will affect the appearance quality of the exterior wall of the assembled product, which is easy to cause Late leakage and other issues

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