Structure and Construction Method of Flower Basket Cantilever Type Steel Bearing Beam

Abstract

The external scaffolding wall structure and the construction method of the present invention use the bolts pre-embedded in the concrete external wall to fix the cantilevered steel beams, and additionally add flower basket pull rods to provide lifting tension for the cantilevered steel beams. In the structure of the present invention, the cantilever beam does not need to be extended into the interior of the building to be fixed, and is directly fixed to the outside of the building's exterior wall, which has no effect on the interior of the building. After the construction is completed, when it needs to be dismantled, it does not need to be cut by fire, and it does not need to be repaired. , There is no hidden danger of water leakage on the floor or wall.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a flower basket cantilevered steel bearing beam structure and a construction method. Background technique [0002] Not both ends are supported, one end is buried or poured on the support, and the other end protrudes out of the support is called a cantilever beam. When setting up scaffolding, it is often encountered that the scaffolding is erected from the half-height of the outer wall of the building. At this time, it is necessary to set a cantilever beam on the building, and the cantilevered end of the cantilever beam protrudes out of the building. The scaffolding is gradually erected upwards from the cantilever beam as the foundation. The cantilever beam is used as the foundation and will bear a large bending stress. [0003] In the traditional construction of erecting cantilever beams, the steel beams must penetrate the outer wall of the building, extend into the room and...

AI Technical Summary

Problems solved by technology

[0003] In the traditional construction of erecting cantilever beams, the steel beams must penetrate the outer wall of the building, extend into the room and lay on the floor of the main structure, and then use several U-shaped embedded parts to anchor on the floor slab and floor beams However, this method has the following disadvantages: (1) The layout of the shaped steel beams extending into the room is complicated, which hinders the cleaning of indoor construction waste and the walking of construction workers; when the shaped 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 leakage on the floor ; Before removing the shaped steel beam, it may be necessary to cut the U-shaped anchor ring on site. After the removal, it is necessary to fill holes and subsidize bricks, which increases the construction time

(2) The fixed length of the traditional cantilevered I-beam extending into the room should not be less than 1.25 times that of the outdoor cantilever section, so under normal circumstances, it is necessary to use a steel beam ≥ 3 meters, and the steel beam at the corner needs 4 ~5 meters, there are the following disadvantages: a lot of steel is invested at one time, and the weight is heavy; the installation and dismantling of a 3 to 5-meter I-beam needs to rely on the tower crane throughout the whole process, and there are many blind spots in the lifting process, which has great potential safety hazards

(3) In traditional cantilevered scaffolding, there will be cantilevered I-beams passing through the stairwell in the core tube, which will bring great inconvenience to construction workers going up and down, and may cause physical injury due to collision, which has great security risks

(4) When the fixed ring at the upper end of the cable-stayed wire rope of the traditional cantilevered scaffold is removed, it needs to be cut on site and cannot be recycled and reused

(5) Traditional cantilevered scaffolds have I-beams in some areas that cannot be dismantled. Cutting methods must be used, which increases the difficulty of dismantling, wastes section steel materials, and has hidden dangers of hot work

(6) After the traditional cantilevered scaffolding removes the cantilevered steel beams, there are large masonry openings in the external wall, and it is necessary to repair the wall hole, repaint the external wall putty, and paint, and it is easy to cause water leakage on the floor or wall , there is a great quality risk

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