Novel cantilever scaffold building method for high-assembly-rate building

Abstract

The invention discloses a novel cantilever scaffold building method for a high-assembly-rate building. The novel cantilever scaffold building method comprises the following steps that according to a special construction scheme of a cantilever scaffold, the pre-embedded position of a square nut sleeve is determined, the axial pressure value of a cantilever heavy frame structure is measured and calculated, a simulation load block is set according to the axial pressure value, and before outer wall concrete is poured, the square nut sleeve is pre-embedded, when the concrete strength reaches the corresponding installation condition, a matched screw is installed, a back-jacking structure and an adjustable throwing supporting structure are adopted, the top face of the outer end of cantilever I-shaped steel is higher than the top face of the inner end of the cantilever I-shaped steel, then an adjustable basket pull rod is installed, the simulation load block is placed on the cantilever I-shaped steel, and after the cantilever heavy frame structure is stably stressed. The cantilever I-shaped steel is completely fixed, then the adjustable throwing supporting structure is dismantled, the simulation load block is moved away, the back-jacking structure is dismantled, and then an external scaffold structure is built on the cantilever I-shaped steel. According to the novel cantilever scaffold building method for the high-assembly-rate building, wall crossing is not needed, consumables are saved, adjustment is convenient, and building is stable.

Description

technical field [0001] The invention belongs to the technical field of scaffolding construction in construction engineering, and in particular relates to a novel method for constructing cantilevered scaffolding for buildings with a high assembly rate. Background technique [0002] In recent years, in urban construction, high-rise building and super high-rise building projects with high assembly rate have been increasing. In order to meet the needs of building main structure construction and exterior wall decoration construction, construction units often use cantilevered scaffolding solutions, but the traditional cantilevered scaffolding The steel beams must pass through the outer walls of the building, extend into the room and be laid on the main structure floor, and then be anchored to the floor slab and floor beams with embedded parts. Garbage cleaning and construction workers walking, while the section steel passes through the wall, it is easy to damage the concrete beam ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, in urban construction, high-rise buildings with high assembly rate and super high-rise building projects have been increasing. In order to meet the needs of building main structure construction and exterior wall decoration construction, construction units often use cantilevered scaffolding schemes, but the traditional cantilevered scaffolding The steel beam must pass through the outer wall of the building, extend into the room and lay on the main structure floor, and then anchor it to the floor slab and floor beam with embedded parts. The layout of the steel beam extending into the room is complicated, which hinders the interior construction. Garbage cleaning and construction workers walking, while the section steel passes through the wall, it is easy to damage the concrete beams and slab components, and it is easy to cause water seepage and water leakage on the floor. Before removing the section steel beams, it may be necessary to cut the anchor ring on site. Holes and subsidized bricks increase the construction time. In addition to the fixed length extending into the room, the steel invested is relatively long, resulting in more steel invested at one time.

[0003] In addition, when the cantilevered scaffolding is used, the outer end of the cantilevered I-beam produces a large vertical displacement, which causes the upper scaffold body to tilt outward and become unstable, resulting in structural instability and potential safety hazards. The phenomenon that the construction is not stable enough to be reworked occurs from time to time, which not only wastes labor and materials, leads to increased construction costs, but also delays the construction period. At the same time, the construction process is inconvenient due to the lack of adjustable structures

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