A construction method for the reverse landing conversion of section steel cantilevered scaffolding

Abstract

The invention discloses a reverse landing conversion construction method of a sectioned steel cantilevered scaffold. The method comprises the following steps: erecting a sectioned steel cantilevered scaffold, downwardly adjusting the adjusting nut of an adjustable base, removing the cantilevered section steel, erecting a floor-to-ceiling scaffold, and landing The scaffolding pole is connected with the cantilevered scaffolding pole to gradually improve the scaffolding body. The cantilevered steel scaffolding is converted when the backfill of the foundation pit is completed. During the conversion, the cantilevered steel is removed one by one and the vertical rods on the cantilevered steel are connected one by one. The invention supports the direct erection of 1-2 story steel cantilevered scaffolds with a height of no more than 9m without occupying the working face of the foundation pit fertilizer tank in the early stage. Under the premise, floor scaffolding is still used. This will not affect the backfilling progress of the foundation pit, which is conducive to shortening the construction period and avoiding multiple holes in the outer wall of the building when all cantilevered steel scaffolding is used.

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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