CN211949120U - An installation structure of a fully prefabricated floor slab - Google Patents

Abstract

The utility model discloses an installation structure of a full precast floor slab, which comprises a supporting structure, a precast slab, a first installation hole, a second installation hole and a stable hole; the first mounting holes and the second mounting holes are respectively formed in two side walls in the width direction of the prefabricated slab, the stabilizing holes are uniformly formed in the prefabricated slab, the supporting structure is arranged at the bottom of the prefabricated slab, and the supporting structure is connected with the stabilizing holes; the full-prefabricated floor slab has strong out-of-plane rigidity and strength, the floor slab has enough supporting length on the beam during installation, temporary support is not required to be arranged during field installation, construction cost is reduced, construction speed is increased, the conditions that the floor slab slides off and cracks in the construction process and the like are avoided, and construction safety factor is high.

Description

An installation structure of a fully prefabricated floor slab

technical field

The utility model relates to the field of building construction, in particular to an installation structure of a fully prefabricated floor slab.

Background technique

At present, the floor slabs in the prefabricated concrete building structure are usually made of concrete composite slabs. This method is mainly to prefabricate the lower part of the floor slab in the factory, and extend the steel bars around it. During the on-site installation, the composite floor slab is used as a formwork, and the upper part of the concrete is poured. In addition, in order to cooperate with the connection of the floor slabs, it is usually necessary to reserve a superimposed layer on components such as prefabricated beams and prefabricated shear walls, and extend steel bars above the components.

Due to the need for a large number of overhanging steel bars, holes need to be reserved on the formwork during the production of prefabricated components, which is extremely inconvenient for component production. In addition, the amount of concrete pouring on site during component installation is relatively large, thereby reducing the construction speed on site. On the other hand, since only the lower part of the laminated floor is prefabricated in the factory, the thickness of the prefabricated concrete slab is low, and the rigidity and strength of the prefabricated floor slab are low, and the prefabricated floor slab is easy to crack when the components are hoisted. In order to solve this problem, it is usually necessary to add truss steel bars above the slab to improve the rigidity and strength of the prefabricated slab, but this approach increases the steel content of the prefabricated slab, thereby increasing the cost of the slab.

The full prefabricated floor slab is produced in the factory, and the rigidity and strength of the floor slab are high, so there is no need to add truss reinforcement. However, fully prefabricated floor slabs are not widely used at present. The main reason is that there is a lack of simple and reliable connection forms. The current practice is to extend steel bars around the slab, and at the same time, a superimposed layer is reserved on the upper part of the beam. Reach into the upper superimposed layer of the beam, and then pour concrete. This approach also cannot avoid the disadvantages of the need for overhanging steel bars around the floor, and at the same time, there is a risk of insufficient anchoring of the floor steel bars.

Utility model content

In view of the above problems, the utility model proposes an installation structure of a fully prefabricated floor slab. In the structure, connection nodes are arranged inside the prefabricated slab and on the side walls, so that the components are firmly connected, and the prefabricated concrete components do not need overhanging steel bars, the on-site pouring amount is small, and the construction speed is fast.

This scheme is implemented as follows:

An installation structure for a fully prefabricated floor plate, comprising a support structure, a prefabricated plate, a first installation hole, a second installation hole and a stabilization hole; the first installation hole and the second installation hole are respectively arranged on both sides in the width direction of the prefabricated plate On the wall, the stabilization holes are evenly arranged on the prefabricated plate, the support structure is arranged at the bottom of the prefabricated plate, and the support structure is connected with the stabilization holes.

Preferably, a plurality of the first mounting holes and the second mounting holes are alternately arranged on the same side wall of the same prefabricated board, and the first mounting holes and the second mounting holes are alternately arranged on the same side wall of the same prefabricated board The height and position of the mounting holes are set differently.

Preferably, a plurality of the first mounting holes and the second mounting holes are matched on the opposite side walls of the same prefabricated board, and the first mounting holes and the second mounting holes are matched on the opposite side walls of the same prefabricated board. The height and position of the mounting holes are set the same.

Preferably, the support structure includes a precast concrete beam and a prefabricated steel bar, one end of the prefabricated concrete beam is arranged in the prefabricated concrete beam, the other end is arranged protruding from the upper surface of the prefabricated concrete beam, and the prefabricated concrete beam protrudes from the prefabricated concrete beam. One end is provided with a thread.

Preferably, a plurality of the stabilization holes are provided on the prefabricated plate, and the stabilization holes are arranged through the prefabricated plate, and the positions of the stabilization holes match the positions of the support structure.

Preferably, the rear ends of the first mounting holes and the second mounting holes are provided with mounting grooves, and a screw rod is provided between the first mounting holes and the second mounting holes.

Preferably, the side wall of the prefabricated board is stepped, and the first mounting hole and the second mounting hole on the same side of the prefabricated board are at different stepped positions.

Preferably, the pre-embedded steel bars are arranged at one end of the precast concrete beam to form a hook-shaped structure.

Preferably, the shape of the stabilizing hole is round at the top and round at the bottom; chamfers are provided on the sides of the floor slab to facilitate the waterproof treatment in the later stage.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The fully prefabricated floor slab itself has strong out-of-plane rigidity and strength. The floor slab has sufficient support length on the beam during installation. There is no need to set temporary support during on-site installation, which reduces the construction cost, improves the construction speed, and avoids the floor slab. In the process of construction, slippage and floor cracking occur, and the construction safety factor is high.

2. The force of the floor is reasonable and the force transmission is clear. After the slab connection is completed, the upper and lower bolts at the tongue and groove position and the slab concrete work together to provide bending resistance. The prefabricated steel bars with wire openings in the prefabricated beams can limit the relative displacement between the floor slab and the prefabricated beams. After the entire floor is connected, the support position has the ability to bear the bending moment, which can form a continuous floor system, thereby reducing the amount of reinforcement and deformation of the floor.

3. Neither the floor slab nor the prefabricated beams need to protrude steel bars, which reduces the difficulty of construction, and the site is only poured concrete in the rectangular groove and other positions, and the amount of on-site concrete pouring is small, which further improves the construction speed on site.

Description of drawings

Fig. 1 is the partial sectional structure schematic diagram of the installation structure of the present utility model;

Fig. 2 is the top view structure schematic diagram of the whole of the present utility model;

Figure 3 is a detailed view of the close-fitting between the prefabricated boards of the present utility model;

In the figure: 1. Supporting structure; 2. Prefabricated plate; 3. First mounting hole; 4. Second mounting hole; 5. Stabilizing hole; 6. Screw; 7. Mounting slot; 11. Precast concrete beam; Buried steel.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention. In addition, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

Example 1

Please refer to Figures 1-3, the utility model provides a technical solution:

An installation structure for a fully prefabricated floor slab, comprising a support structure 1, a prefabricated plate 2, a first installation hole 3, a second installation hole 4 and a stabilization hole 5; the first installation hole 3 and the second installation hole 4 are respectively arranged in On the two side walls in the width direction of the prefabricated board 2 , the stabilization holes 5 are evenly arranged on the prefabricated board 2 , the support structure 1 is arranged at the bottom of the prefabricated board 2 , and the support structure 1 is connected with the stabilization holes 5 .

The fully prefabricated floor slab is stably installed on the supporting structure 1 through the stable connection between the supporting structure 1 and the stabilizing hole 5, and the adjacent fully prefabricated floor slabs pass through the corresponding first installation holes 3 and The second installation holes 4 are fixedly connected, so that the adjacent fully prefabricated floor slabs are firmly connected, and the stability of the overall fully prefabricated floor slab installation structure is guaranteed.

Through this scheme, the fully prefabricated floor slab itself can have strong out-of-plane rigidity and strength, and the floor slab has sufficient support length on the beam during installation, and there is no need to provide temporary support during on-site installation, which reduces the construction cost and improves the construction speed. In addition, the sliding of the floor slab and the cracking of the floor slab during the construction process are avoided, and the construction safety factor is high.

After the fully prefabricated floor slab is connected, the first installation hole 3, the second installation hole 4, the screw 6 and the floor concrete work together to provide bending resistance. The stable hole 5 reserved in the prefabricated beam can limit the relative displacement of the floor slab and the prefabricated beam. After the entire floor is connected, the support position has the ability to bear the bending moment, which can form a continuous floor system, thereby reducing the amount of reinforcement and deformation of the floor.

A screw rod 6 is provided between the first installation hole 3 and the second installation hole 4 , and the screw rod 6 is used for fixed connection.

The first mounting holes 3 and the second mounting holes 4 are alternately arranged on the same side wall of the same prefabricated board 2 , and the first mounting holes 3 and the second mounting holes 3 are alternately arranged on the same side wall of the same prefabricated board 2 . The height and position of the two mounting holes 4 are set differently.

The first mounting holes 3 and the second mounting holes 4 are matched in multiples on the opposite side walls of the same prefabricated board 2 , and the first mounting holes 3 and the second mounting holes 3 are matched on the opposite side walls of the same prefabricated board 2 . The height and position of the two mounting holes 4 are set to be the same.

Based on the above structure, the adjacent prefabricated boards 2 are connected through the first mounting hole 3 and the second mounting hole 4 in combination with the screw 6. However, since the side wall of the prefabricated boards 2 is relatively thin, if different prefabricated boards are connected, the corresponding All the first mounting holes 3 and the second mounting holes 4 are aligned up and down, which will cause the alignment of the upper and lower screws to weaken the cross-section and cause stress concentration. Therefore, it is necessary to stagger the arrangement of the upper and lower screws, that is, when the different prefabricated boards are connected, the corresponding The upper and lower first mounting holes 3 and the second mounting holes 4 are staggered, and there are screw connections at the top and bottom to resist the bending moment of the connection part.

The rear ends of the first installation hole 3 and the second installation hole 4 are provided with installation grooves 7. During the hoisting operation, the positions of the first installation hole 3 and the second installation hole 4 are opposite, and then the rear end installation groove 7 The screw 6 is connected and then locked.

The side wall of the prefabricated board 2 is stepped, and the first installation hole 3 and the second installation hole 4 on the prefabricated board 2 on the same side are at different stepped positions.

The support structure 1 includes a prefabricated concrete beam 11 and a prefabricated steel bar 12, one end of the prefabricated concrete beam 12 is arranged on the prefabricated concrete beam 11, the other end is arranged protruding from the upper surface of the prefabricated concrete beam 11, and the protruding prefabricated concrete beam 11 is arranged The pre-embedded steel bars 12 are provided with threads matching the stabilization holes 5, and the pre-embedded steel bars 12 are connected with the stabilization holes 5, so that the support structure 1 provides support and limit for the prefabricated panels 2.

The embedded steel bar 12 is arranged at one end of the precast concrete beam 11 to form a hook-shaped structure. The hook-shaped structure can ensure the anchoring strength of the embedded steel bar in the concrete, prevent the steel bar from being pulled out, and connect the precast slab 2 with the precast concrete beam 11. more stable.

A plurality of the stabilization holes 5 are provided on the prefabricated board 2 , and the stabilization holes 5 are provided through the prefabricated board 2 , and the positions of the stabilization holes 5 match the positions of the support structure 1 .

The shape of the stabilizing hole 5 is round at the top and bottom; chamfers are provided on the sides of the floor slab to facilitate the later waterproof treatment.

The adjacent prefabricated panels 2 in the width direction are caulked by sealant to make the joints seamless. When the embedded steel bars are connected with the stable holes, the threads, nuts and pads reserved on the upper part of the embedded steel bars are used to make the connection seamless. The prefabricated floor slab and the prefabricated beam are connected together to ensure that the floor slab and the prefabricated concrete beam do not have relative displacement.

How to install this structure:

The prefabricated slab 2 is hoisted on the support structure 1, and the pre-embedded steel bars with wire openings on the prefabricated beams pass through the floor stabilization holes during installation, so as to achieve the purpose of connecting the floor slab and the prefabricated beams together. When hoisting, care should also be taken to make the first installation hole 3 and the second installation hole 4 of the adjacent prefabricated panels 2 overlap together to ensure that the bolt holes at the connection of the prefabricated panels are aligned, and then use the bolts to make the first installation hole 3 and the second installation hole 3. The installation holes 4 are connected to make the adjacent prefabricated slabs 2 fixedly connected, and the micro-expanded fine stone concrete is poured after the reserved installation slots 7 and the stabilization holes 5, and the sealant is applied at the chamfered position of the slab to improve the waterproof performance of the floor. Complete the installation job.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of protection.

Claims (9)

1. The utility model provides a mounting structure of full precast floor slab which characterized in that: the prefabricated slab comprises a supporting structure, a prefabricated slab, a first mounting hole, a second mounting hole and a stabilizing hole; the first mounting holes and the second mounting holes are respectively formed in two side walls in the width direction of the prefabricated slab, the stabilizing holes are uniformly formed in the prefabricated slab, the supporting structure is arranged at the bottom of the prefabricated slab, and the supporting structure is connected with the stabilizing holes.

2. The installation structure of a full precast floor slab according to claim 1, wherein: the first mounting holes and the second mounting holes are alternately arranged on the same side wall of the same prefabricated plate in a plurality, and the first mounting holes and the second mounting holes alternately arranged on the same side wall of the same prefabricated plate are arranged at different heights.

3. The installation structure of a full precast floor slab according to claim 2, wherein: the first mounting holes and the second mounting holes are arranged on the opposite side walls of the same prefabricated plate in a plurality of numbers, and the height positions of the first mounting holes and the second mounting holes which are arranged on the opposite side walls of the same prefabricated plate in a matching mode are the same.

4. A mounting structure of a full precast floor slab according to claim 1, 2 or 3, wherein: the supporting structure comprises a precast concrete beam and embedded steel bars, one end of each embedded steel bar is arranged on the precast concrete beam, the other end of each embedded steel bar protrudes out of the upper surface of the precast concrete beam, and threads are arranged on the embedded steel bars protruding out of the precast concrete beam.

5. A mounting structure of a full precast floor slab according to claim 1, 2 or 3, wherein: the prefabricated plate is provided with a plurality of stabilizing holes, the stabilizing holes penetrate through the prefabricated plate, and the positions of the stabilizing holes are matched with the positions of the supporting structures.

6. A mounting structure of a full precast floor slab according to claim 1, 2 or 3, wherein: the rear ends of the first mounting hole and the second mounting hole are provided with mounting grooves, and a screw rod is arranged between the first mounting hole and the second mounting hole.

7. A mounting structure of a full precast floor slab according to claim 1, 2 or 3, wherein: the side wall of the prefabricated plate is in a step shape, and the first mounting hole and the second mounting hole in the prefabricated plate on the same side are in different step positions.

8. The installation structure of a full precast floor slab according to claim 4, wherein: the embedded steel bars are arranged at one end of the precast concrete beam to form a hook structure.

9. A mounting structure of a full precast floor slab according to claim 1, 2 or 3, wherein: the hole shape of the stabilizing hole is an upper circle and a lower circle; set up the chamfer at the floor side, make things convenient for later stage water repellent.

Images