CN207700669U - A kind of bracing means of builder's jack and laminated floor slab - Google Patents

Abstract

The utility model relates to a reinforcing device for a cantilevered scaffold and a laminated floor, which relates to the technical field of construction equipment. Aiming at the problem of inconvenient installation and removal of the cantilevered scaffold caused by fixing the cantilevered scaffold on the existing laminated floor. It includes multiple anchors, and each cantilever beam is fixed to the laminated floor through anchors; the closed end of the U-shaped suspender is set at the bottom of the laminated floor, and its open end runs through the laminated floor, and the U-shaped suspender The height is greater than the sum of the thickness of the laminated floor slab and the cantilever beam, and the fastening piece is arranged on the top of the cantilever beam and is detachably connected with the U-shaped suspender.

Description

A reinforcement device for cantilevered scaffolding and laminated floor slabs

technical field

The utility model relates to the technical field of construction equipment, in particular to a reinforcing device for a cantilevered scaffold and a laminated floor.

Background technique

The laminated floor slab is a prefabricated floor slab composed of prefabricated slabs and cast-in-place concrete layers (hereinafter referred to as cast-in-place slabs). The prestressed main reinforcement of the prefabricated slab is the main reinforcement of the laminated slab. The pouring slab is only equipped with negative moment bars and structural steel bars, and the prefabricated slab is used as the bottom form of the cast-in-place concrete layer. The laminated floor slab has the advantages of high rigidity, good crack resistance and saving formwork.

Cantilevered scaffolding refers to the scaffolding whose frame structure is attached to the rigid cantilevered beam (frame) of the building structure. It is used for the main body or decoration project in the building construction and its safety protection needs. The supporting structure of the cantilevered scaffolding should be Cantilevered beams or cantilevered trusses made of section steel. As shown in Figure 1, one end of the cantilever beam 2 is fixed on the floor 1, and one end of the cantilever beam 2 protruding from the building exterior wall is connected with the embedded part 4 in the building exterior wall through a steel wire rope 3, and the cantilever beam 2 To install the scaffolding 5 on the floor 1, usually, pre-embed the embedded steel bar in the floor 1, and then make the cantilever beam 2 pass through the embedded steel bar to achieve fixation. According to the current national standards, when the anchoring position of the cantilevered scaffold is set on the floor, the thickness of the floor should not be less than 120mm. In the prefabricated construction project, the thickness of the prefabricated slab of the laminated floor is 60mm, and the thickness of the cast-in-place slab is 70mm. It is too thin to meet the requirements for the thickness of the floor slab for the anchorage of the cantilevered scaffold. If the embedded steel bar is fixed through the laminated floor, the embedded steel bar will collide with the support system set under the laminated floor, and the removal time of the support system It is later than the overhanging construction time of the cantilevered scaffolding, which makes it inconvenient to install and dismantle the cantilevered scaffolding.

Contents of the invention

Aiming at the problem of inconvenient installation and removal of the cantilevered scaffold caused by fixing the cantilevered scaffold on the existing laminated floor. The purpose of this utility model is to provide a reinforcement device for a cantilevered scaffold and a laminated floor. The U-shaped suspender of the reinforcement device penetrates through the opening of the laminated floor and is detachably connected with the fastening piece. The cantilever beam passes through the anchorage. The fixing of the cantilevered scaffold can be realized by the cantilevered scaffold, which meets the requirements of the cantilevered scaffold for the anchorage of the floor, and can avoid the collision between the anchor and the support system of the laminated floor, making the installation and disassembly of the cantilevered scaffold more convenient and faster.

The technical solution adopted by the utility model to solve the technical problem is: a reinforcement device for a cantilevered scaffold and a laminated floor, which includes a plurality of anchors, cantilevered beams are erected on the laminated floor, and each of the cantilevered The cantilever beams are all fixed to the laminated floor through the anchors, and the cantilevered scaffold is erected on one end of the cantilever beam protruding from the laminated floor; the anchors are arranged at the bottom of the laminated floor without erecting In the area of the supporting system, the anchor includes a U-shaped suspender and a fastening piece, the closed end of the U-shaped suspender is arranged at the bottom end of the laminated floor, and the open end of the U-shaped suspender runs through the The composite floor, and the height of the U-shaped suspender is greater than the sum of the thickness of the composite floor and the cantilever beam, the fastening piece is arranged on the top of the cantilever beam, and the fastening Both ends of the solid piece are detachably connected with the U-shaped suspender.

Preferably, the top of the U-shaped suspender is provided with external threads, and the two ends of the fastening piece are provided with through holes corresponding to the U-shaped suspender, and the top of the U-shaped suspender passes through the fastening The solid piece is locked and fixed by a nut.

Preferably, the through hole is a long hole, and the long axis of the long hole is consistent with the length direction of the fastening piece.

Preferably, both ends of the fastening piece are provided with slots corresponding to the U-shaped suspenders, and the top ends of the U-shaped suspenders are buckled in the slots and locked and fixed by nuts.

Preferably, it also includes several limit blocks, the limit blocks are arranged on both sides of the cantilever beam, one side of the limit block is against the cantilever beam, and the other limit block One side is against the U-shaped suspender.

Preferably, at least one pair of anchors is located near the edge of the laminated floor, and at least one pair of anchors is located at the end of the cantilever beam.

The effect of the utility model lies in: a reinforcing device of a cantilevered scaffold and a superimposed floor of the utility model, the U-shaped suspender of the anchor piece penetrates the superimposed floor, and is detachable with the fastening piece arranged on the cantilever beam type connection, so that each cantilever beam is fixed to the laminated floor slab through anchors, the reinforcement device has the following beneficial effects:

(1) Different from the conventional reinforcement method of pre-embedding embedded steel bars inside the prefabricated slab, the U-shaped suspender of the reinforcement device of the utility model penetrates through the through hole of the laminated floor slab and is detachably connected with the fastener, and the cantilever beam The cantilevered scaffold can be fixed through the anchor, which meets the requirements of the cantilevered scaffold anchoring on the thickness of the floor;

(2) After the laminated slab is in place, a hole is opened at the position below which the support system is not set up. The position of the through hole is easy to control, which can avoid the collision between the anchor and the support system of the laminated slab, so that the installation and disassembly of the cantilevered scaffold are more convenient and faster;

(3) The detachable connection between the U-shaped suspender and the fastener of the reinforcement device, each component can be used repeatedly, and the construction cost is reduced.

Description of drawings

Fig. 1 is the schematic diagram that existing cantilevered scaffold is anchored in reinforced concrete floor;

Figure 2 is a schematic diagram of the connection between a cantilevered scaffold and a laminated floor slab according to an embodiment of the present invention;

Fig. 3 is a structural schematic diagram of a reinforcement device according to an embodiment of the present invention.

The numbers in the figure are as follows:

Floor 1; cantilever beam 2; wire rope 3; embedded parts 4; scaffolding 5;

Anchor piece 10; U-shaped suspension rod 11; fastening piece 12; nut 14; limit block 15;

The composite floor 20 ; the area 20a where no supporting system is erected at the bottom of the composite floor; the prefabricated slab 21 ; the cast-in-place slab 22 ; the main reinforcement 23 ;

Detailed ways

A reinforcing device for a cantilevered scaffold and a laminated floor slab proposed by the utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the utility model will be more clear. It should be noted that all the drawings are in very simplified form and use inaccurate scales, which are only used to facilitate and clearly illustrate the purpose of the embodiment of the present utility model. For the convenience of description, the "up", "down", "left" and "right" described below are consistent with the directions of up, down, left and right in the accompanying drawings, but this cannot be a limitation of the technical solution of the present invention.

A reinforcement device for a cantilevered scaffold and a laminated floor slab of the present invention is described in conjunction with Fig. 2 and Fig. 3. Fig. 2 shows the top view of the laminated floor 20 and the cantilevered beam 2, and the dotted line frame is filled with oblique lines The area is the area 20a where the support system is not set up at the bottom of the laminated floor slab; The reinforcing device is mainly used in the fixed connection between the cantilevered scaffold and the laminated floor 20 in the construction of prefabricated buildings. 2 are all fixed to the laminated floor 20 by anchors 10, and the cantilevered scaffolding is erected on one end of the cantilever beam 2 protruding from the laminated floor 20; the anchor 10 is arranged at the area 20a at the bottom of the laminated floor where no supporting system is set up; the above anchor The piece 10 includes a U-shaped suspender 11 and a fastening piece 12. The closed end of the U-shaped suspender 11 is arranged at the bottom end of the prefabricated slab 21 of the laminated floor 20, and the open end of the U-shaped suspender 11 runs through the prefabricated slab 21 and the existing slab respectively. pouring plate 22, and the height of the U-shaped suspender is greater than the sum of the thickness of the laminated floor 20 and the cantilever beam 2, the fastening piece 12 is arranged on the top of the cantilever beam 2, and the two ends of the fastening piece 12 are connected with the U-shaped Both ends of the suspension rod 11 are detachably connected. The cantilever beam 2 in this embodiment is made of I-shaped steel, of course, it can also be made of other steel materials, which is not limited here.

A reinforcement device for a cantilevered scaffold and a laminated floor of the present utility model, the U-shaped suspender 11 of the anchor piece 10 runs through the laminated floor 20, and is detachably connected with the fastening piece 12 arranged on the cantilever beam 2 , so that each cantilever beam 2 is fixed to the laminated floor 20 through the anchor 10, the reinforcement device has the following

Beneficial effect:

(1) Different from the conventional reinforcement method of pre-embedding steel bar embedded parts inside the prefabricated slab 21, the U-shaped suspender 11 of the reinforcement device of the present invention penetrates through the through hole of the laminated floor 20 and is detachably connected with the fastening piece 12 , the cantilever beam 2 passes through the anchor piece 10 to realize the fixation of the cantilevered scaffold, which meets the requirement of the cantilevered scaffold for the anchorage of the floor thickness;

(2) After the laminated floor 20 is in place, a hole is opened at the position where the support system is not set up under it. The position of the through hole is easy to control, which can prevent the anchor 10 from colliding with the support system of the laminated floor 20, so that the cantilevered scaffold Installation and disassembly are more convenient and faster;

(3) The U-shaped suspender 11 and the fastening piece 12 of the reinforcing device are detachably connected, each component can be used repeatedly, and the construction cost is reduced.

As the best embodiment, as shown in Figure 3, the U-shaped suspender 11 is made of steel bar, and its top is provided with external thread, and the fastening piece 12 is made of steel plate, and the two ends of the fastening piece 12 are provided with U The through hole corresponding to the U-shaped suspender 11, the top of the U-shaped suspender 11 runs through the fastening piece 12 and is locked and fixed by the nut 14, the screw connection between the U-shaped suspender 11 and the fastening piece 12 is stable and reliable, and it is easy to disassemble. Moreover, the fastening degree of the two clamping cantilever beams 2 is also easier to adjust.

More preferably, the above-mentioned through hole is a long hole, and the long axis of the long hole is consistent with the length direction of the fastening piece 12. fine-tuning.

Please continue to refer to Fig. 3, the reinforcement device also includes a number of limit blocks 15, the limit blocks 15 are arranged on both sides of the cantilever beam 2, one side of the limit block 15 is against the web of the cantilever beam 2, and the limit block The other side of 15 is offset with U-shaped suspension rod 11. The limit block 15 of this embodiment is made of wood, and the limit block 15 can clamp the cantilever beam 2 between the two vertical bars of the U-shaped suspender 11, so as to prevent the cantilever beam 2 from being placed on the laminated floor 20. The horizontal displacement occurs above, which makes the positioning of the cantilever beam 2 more stable and reliable.

As shown in Figure 2, since the left side of the cantilever beam 2 protrudes from the end of the laminated floor 20, a scaffold needs to be installed. For the anchors 10, a pair of anchors 10 are close to the edge of the laminated floor 20, and a pair of anchors 10 are fixed to the end of the right side of the cantilever beam 2 to meet the stress requirements of the cantilever beam 2, more preferably, Two pairs of anchors 10 are arranged side by side at the end of the right side of the cantilever beam 2 to further strengthen the connection between the cantilever beam 2 and the laminated floor 20 .

As another embodiment, the two ends of the fastening piece 12 are provided with a slot corresponding to the U-shaped suspension rod 11 (not shown in the figure), and the top end of the U-shaped suspension rod 11 is buckled in the slot and fixed by a nut. 14 is locked and fixed, and the U-shaped suspender 11 is clipped and fixed with the fastening piece 12. The installation and disassembly of the fastening piece 12 are all more convenient, and the work efficiency can be further improved.

Below in conjunction with Fig. 2 and Fig. 3 illustrate a kind of cantilevered scaffolding of the present utility model and the reinforcement method of superimposed floor slab, concrete steps are as follows:

S1: After the prefabricated slab 21 of the laminated floor 20 is hoisted in place, a number of U-shaped steel bar embedded parts (not shown in the figure) are arranged on the prefabricated slab 21, so that the two legs of the U-shaped steel bar embedded parts fit the prefabricated slab 21 , pouring the cast-in-place slab 22 concrete, after the cast-in-place slab 22 concrete reaches the strength required by design, the cantilever beam 2 of the cantilevered scaffold is erected on the cast-in-place slab 22 and inserted into the U-shaped steel bar embedded parts for temporary fixation;

S2: Open holes in the area 20a where the support system is not installed at the bottom of the laminated floor, so that the U-shaped suspender 11 penetrates the laminated floor, and the fastening piece 12 is arranged on the cantilever beam 2, so that the two ends of the fastening piece 12 are aligned with the U Shaped suspender 11 is detachably connected, and a cantilevered scaffold is installed at the end where the cantilever beam 2 stretches out from the laminated floor 20.

To sum up, first, a number of U-shaped embedded steel bars are set on the prefabricated slab 21 in place, the cast-in-place slab 22 is poured, and the cantilever beam 2 is temporarily fixed to the laminated floor 20 through the U-shaped embedded steel bars. The area 20a where the support system is not installed at the bottom of the composite floor is opened on site, and the U-shaped suspender 11 penetrates the opening and is threadedly connected with the fastening piece 12, so that the cantilever beam 2 can pass through the anchor 10 to realize the fixing of the cantilevered scaffolding. The floor 20 is drilled on site, and its position is easy to control, which can avoid the collision between the anchor 10 and the support system of the laminated floor 20, making the installation and disassembly of the cantilevered scaffold more convenient and faster.

The top of the above-mentioned U-shaped suspender 11 is screwed or clamped to the fastening piece 12, and the anchor piece 10 is more convenient to disassemble, which improves the construction efficiency.

The above step S1 also includes arranging double-layer two-way steel bars above the openings of the laminated floor slabs 20 , and performing structural strengthening treatment on the perforated positions of the U-shaped suspenders 11 of the cast-in-place slab 22 .

Further, the above reinforcement method also includes step S3, dismantling the cantilevered scaffold erected at the end of the cantilever beam 2, loosening the threaded connection between the fastening piece 12 and the U-shaped suspender 11 and removing it, and dismantling the cantilever beam from the U-shaped The removal of the cantilevered scaffolding is completed by extracting the embedded steel bars.

The above description is only a description of the preferred embodiments of the present utility model, not any limitation to the scope of the present utility model. Any changes and modifications made by those skilled in the field of the present utility model according to the above disclosed content all belong to the scope of the claims.

Claims (6)

1. A reinforcing device for cantilevered scaffolding and laminated floor slabs, characterized in that it comprises: A plurality of anchors, cantilever beams are erected on the composite floor, each of the cantilever beams is fixed to the composite floor by the anchors, and the cantilever scaffold is erected on the cantilever beams out of one end of the laminated slab; The anchor is arranged at the bottom of the laminated floor where no support system is set up, the anchor includes a U-shaped suspender and a fastening piece, and the closed end of the U-shaped suspender is arranged at the bottom of the laminated floor , the open end of the U-shaped suspender runs through the laminated floor, and the height of the U-shaped suspender is greater than the sum of the thicknesses of the laminated floor and the cantilever beam, and the fastening piece is arranged on The top end of the cantilever beam and the two ends of the fastening piece are detachably connected to the U-shaped suspension rod. 2. The reinforcing device according to claim 1, characterized in that: the top end of the U-shaped suspender is provided with an external thread, and the two ends of the fastening piece are provided with through holes corresponding to the U-shaped suspender , the top end of the U-shaped suspender goes through the fastening piece and is locked and fixed by a nut. 3 . The reinforcement device according to claim 2 , wherein the through hole is a long hole, and the long axis of the long hole is consistent with the length direction of the fastening piece. 4 . 4. The reinforcement device according to claim 1, characterized in that: the two ends of the fastening piece are provided with slots corresponding to the U-shaped suspender, and the top end of the U-shaped suspender is buckled on the It is fixed in the card slot and locked by nuts. 5. The reinforcement device according to any one of claims 1 to 4, characterized in that: it also includes several limit blocks, the limit blocks are arranged on both sides of the cantilever beam, and the limit blocks One side is against the cantilever beam, and the other side of the limit block is against the U-shaped suspender. 6. The reinforcing device according to claim 1, characterized in that at least one pair of said anchors is close to the edge of said laminated floor, and at least one pair of said anchors is located at the end of said cantilever beam.