Prefabricated ribbed bottom plate concrete composite floor and construction method thereof

Abstract

The application provides a prefabricated ribbed bottom plate concrete composite floor and a construction method thereof, and relates to the technical field of building, which comprises a prefabricated ribbed bottom plate and a cast-in-place layer. The prefabricated ribbed bottom plate comprises a flat plate and ribbed plates arranged at intervals along the flat plate. A bottom surface of the ribbed plate is provided with a plurality of rectangular grooves at equal intervals. A plurality of transverse bars are arranged at equal intervals along the length direction of the ribbed plate. Each transverse bar is arranged through a bar penetrating hole on the ribbed plate and is arranged in a staggered manner with the rectangular grooves. Longitudinal bars perpendicular to the transverse bars are arranged between two ribbed plates. Each longitudinal bar is fixed with the transverse bar to form a reinforcing mesh. The cast-in-place layer is poured on the reinforcing mesh and is integrated with the prefabricated ribbed bottom plate, thereby improving the problems of the existing prefabricated ribbed bottom plate concrete composite floor, such as difficulty in penetrating the bar and difficulty in connecting the cast-in-place concrete into a whole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building, in particular to a prefabricated ribbed bottom plate concrete composite floor and a construction method thereof. BACKGROUND

[0002] In the prefabricated building, in order to improve the construction efficiency and quality, prefabricated plates are usually processed in the factory, and then the prefabricated plates are used as the bottom plate to pour the cast-in-place layer concrete to form the whole structure at the construction site. The prefabricated plate of the ordinary concrete composite floor is generally a flat plate, and the rigidity is small. When the cast-in-place layer is constructed, additional supports need to be set at the bottom of the flat plate. However, the prefabricated ribbed bottom plate concrete composite floor has larger rigidity due to the ribs. When the rib height is the same as the cast-in-place layer height, the rigidity is large enough, and additional supports are generally not needed during construction, thereby improving the construction efficiency. However, the existing prefabricated ribbed bottom plate concrete composite floor has the problems of difficult distribution bar penetration and difficulty in connecting the cast-in-place concrete into a whole due to the setting of the prefabricated plate ribs. SUMMARY

[0003] The present application discloses a prefabricated ribbed bottom plate concrete composite floor, which aims to improve the problems of difficult distribution bar penetration and difficulty in connecting the cast-in-place concrete into a whole of the existing prefabricated ribbed bottom plate concrete composite floor.

[0004] The present application adopts the following scheme:

[0005] The present application adopts the following scheme:

[0006] As a further improvement, the hole diameter of the penetration hole is not less than the diameter of the transverse bar.

[0007] As a further improvement, the top surface of the rib plate is flush with the top surface of the cast-in-place layer.

[0008] Another prefabricated ribbed bottom plate concrete composite floor construction method is provided, which comprises the following steps:

[0009] The factory prefabrication stage:

[0010] Step one: production mold installation includes the installation of the flat plate template and the rib template.

[0011] Step two: pass each transverse rib through the rib passing hole on the rib template;

[0012] Step three: pour concrete into the flat plate template and the rib template;

[0013] Step four: after curing and demolding, the prefabricated ribbed floor is formed;

[0014] On-site construction stage:

[0015] Step one: hoist each prefabricated ribbed floor, uniformly bind and lap the longitudinal rib on the transverse distribution rib, and complete the layout of the steel mesh of the cast-in-place layer;

[0016] Step two: support and pour the cast-in-place layer concrete, wherein the height of the side formwork of the cast-in-place layer is the same as the height of the rib plate:

[0017] Step three: curing and demolding.

[0018] As a further improvement, the flat plate template comprises a bottom panel and first and second side panels enclosing the periphery of the bottom panel, and each of the two opposite first side panels is provided with a connecting portion.

[0019] As a further improvement, the rib template comprises a main body layer, a cover plate layer and a bottom plate layer, the cover plate layer is sleeved outside the main body layer, the bottom plate layer is inserted on the cover plate layer for limiting, and cooperates with the main body layer to form the rectangular groove.

[0020] As a further improvement, the main body layer comprises two opposite rib side panels and connecting plates welded at both ends of the rib side panels, a plurality of first U-shaped holes and rectangular holes are uniformly and staggered arranged on the rib side panels; the cover plate layer comprises first and second limiting plates opposite to each other and a top plate connecting the top of the two limiting plates, a plurality of arched holes and limiting holes are uniformly and staggered arranged on the first limiting plate, an insertion slot and a second U-shaped hole are provided on the second limiting plate, the second U-shaped hole is opposite to the first U-shaped hole and cooperates with the arched hole to form a rib passing hole; the bottom plate layer comprises an insertion plate, the insertion plate is welded with a door-shaped steel plate and a positioning steel plate matched with the limiting hole.

[0021] As a further improvement, the limiting hole is in the shape of inverted L, and the positioning steel plate is shaped similarly to the limiting hole.

[0022] As a further improvement, the door-shaped steel plate is provided with a pin hole, and when the door-shaped steel plate is inserted into the insertion slot, the pin hole is limited by the cooperation of the pin and the pin hole.

[0023] As a further improvement, the connecting portion has a welding section for welding with the first side panel and a zigzag section for matching with the connecting plate.

[0024] By adopting the technical scheme, the application can achieve the following technical effects:

[0025] The present application can achieve the following technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as a limitation to the scope. Other related drawings can also be obtained by those skilled in the art without creative labor.

[0027] Figure 1 is a structural diagram of a prefabricated ribbed floor plate according to an embodiment of the present application;

[0028] Figure 2 is a structural diagram of a flat plate mold according to an embodiment of the present application;

[0029] Figure 3 is a structural diagram of a flat plate mold and a rib mold connecting plate according to an embodiment of the present application;

[0030] Figure 4 is a structural diagram of a rib mold cover plate according to an embodiment of the present application;

[0031] Figure 5 is a structural diagram of a rib mold main body according to an embodiment of the present application;

[0032] Figure 6 is a structural diagram of a rib mold bottom plate according to an embodiment of the present application;

[0033] Figure 7 is a detailed structural diagram of a rib mold bottom plate according to an embodiment of the present application;

[0034] Figure 8 is a structural diagram of a first side of a rib mold according to an embodiment of the present application;

[0035] Figure 9 is a structural diagram of a second side of a rib mold according to an embodiment of the present application;

[0036] Figures 10-12 is a structural schematic diagram of the rib template, the flat template and the transverse distribution rib assembled in one embodiment of the present application at different viewing angles;

[0037] Figure 13 is a schematic diagram of the arrangement of the steel bar mesh of the cast-in-place layer

[0038] Figure 14 is a structural schematic diagram of the prefabricated ribbed bottom plate concrete composite floor slab in one embodiment of the present application.

[0039] Figure: 1 - bottom panel; 2 - connecting part; 21 - rectangular groove; 211 - welding surface; 212 - sawtooth section; 22 - flat plate; 23 - rib plate; 3 - first side plate; 4 - second side plate; 5 - rib template; 51 - main body layer; 511 - connecting plate; 512 - side rib plate; 513 - first U-shaped hole; 514 - rectangular hole; 52 - cover plate layer; 521 - top plate; 522 - first limiting plate; 523 - arched hole; 524 - inverted L-shaped hole; 525 - insertion slot; 526 - second U-shaped hole; 527 - second limiting plate; 53 - bottom plate layer; 531 - insertion plate; 532 - door-shaped steel plate; 5321 - pin hole; 5322 - extension; 533 - positioning steel plate; 54 - penetrating rib hole; 6 - transverse rib; 7 - longitudinal rib; 8 - cast-in-place layer. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0041] EMBODIMENT

[0042] In combination Figures 1 to 14The embodiment provides a prefabricated ribbed bottom plate concrete composite floor slab, which comprises a prefabricated ribbed bottom plate and a cast-in-place layer 8, the prefabricated ribbed bottom plate comprises a flat plate 22 and rib plates 23 arranged at intervals along the flat plate 22, a plurality of rectangular grooves 21 are equidistantly arranged on the bottom surface of the rib plate 23, a plurality of transverse bars 6 are equidistantly arranged along the length direction of the rib plate 23, each transverse bar 6 is arranged through a bar penetrating hole 54 on the rib plate 23 and is arranged in a staggered manner with the rectangular groove 21, longitudinal bars 7 perpendicular to the transverse bars 6 are arranged between the two rib plates 23, and each longitudinal bar 7 is bound and fixed with the transverse bar 6 to form a reinforcing mesh, and the cast-in-place layer 8 is poured on the reinforcing mesh and is integrated with the prefabricated ribbed bottom plate.

[0043] It should be noted that, in the embodiment, the bar penetrating hole 54 is formed on the rib plate 23, so that the transverse bar 6 is arranged through the bar penetrating hole 54 before the cast-in-place layer 8 is poured, the transverse bar 6 arranged through the bar penetrating hole 54 is integrated with the prefabricated layer, the installation of the transverse bar 6 is facilitated, and the construction steps of the cast-in-place layer 8 are simplified. In addition, the plurality of rectangular grooves 21 are equidistantly arranged on the bottom surface of the rib plate 23, so that the cast-in-place concrete can be integrated as a whole, and the floor slab has higher integrity. In addition, the reinforcing mesh can improve the strength of the cast-in-place layer 8, thereby improving the overall strength of the floor slab.

[0044] Further, the diameter of the bar penetrating hole 54 is not less than the diameter of the transverse bar 6, and further, the diameter of the bar penetrating hole 54 is preferably just enough for the transverse bar 6 to pass through, so as to ensure that the transverse bars 6 are uniformly distributed.

[0045] Preferably, the top surface of the rib plate 23 is flush with the top surface of the cast-in-place layer 8, that is, the height of the rib plate 23 is the same as the height of the cast-in-place layer 8, so that the prefabricated plate has sufficient rigidity, and additional support is not needed during the construction of the cast-in-place layer 8.

[0046] Another embodiment of the present application provides a construction method of a prefabricated ribbed bottom plate concrete composite floor slab, comprising the following steps:

[0047] The factory prefabrication stage:

[0048] Step one: installation of a mold including installation of a flat plate mold and a rib mold 5;

[0049] Step two: arranging each transverse bar 6 through the bar penetrating hole 54 on the rib mold 5;

[0050] Step three: pouring concrete into the flat plate mold and the rib mold 5;

[0051] Step four: forming a prefabricated ribbed bottom plate after curing and demolding;

[0052] The site construction stage:

[0053] Step one: hoist each prefabricated ribbed floor, uniformly bind and lap the longitudinal rib 7 on the transverse distribution rib 6, complete the reinforcement mesh layout of the cast-in-place layer 8;

[0054] Step two: formwork pouring cast-in-place layer concrete, wherein the height of the cast-in-place layer 8 side formwork is the same as the height of the rib plate 23:

[0055] Step three: maintenance demolding.

[0056] It should be noted that the embodiment completes the layout of the transverse rib 6 before pouring the prefabricated layer, so that the transverse rib 6 is integrated with each rib plate 23, thereby enhancing the strength of the rib plate 23, and also reducing the construction steps before pouring the cast-in-place layer 8. In addition, the reinforcement mesh and the prefabricated ribbed floor can be connected into one by pouring through the formwork during the construction of the cast-in-place layer 8, thereby achieving the purpose of enhancing the strength of the floor, greatly improving the construction efficiency, and being convenient and fast.

[0057] On the basis of the above embodiment, in an optional embodiment of the present application, the flat plate formwork comprises a bottom plate 1 and first side plates 3 and second side plates 4 surrounding the side of the bottom plate 1, and the two first side plates 3 opposite to each other are each provided with a connecting part 2. The rib formwork 5 comprises a main body layer 51, a cover plate layer 52 and a bottom plate layer 53, the main body layer 51 is welded by two connecting plates 511 and two side rib plates 512, and the side rib plates 512 are uniformly and staggered provided with a plurality of first U-shaped holes 513 and rectangular holes 514. The cover plate layer 52 comprises first limiting plates 522 and second limiting plates 527 and four top plates 521 arranged on the top of the two limiting plates, the first limiting plates 522 are uniformly and staggered provided with arched holes 523 and limiting holes, wherein the limiting holes are preferably inverted L-shaped holes 524, the second limiting plates 527 are uniformly and staggered provided with insertion grooves 525 and second U-shaped holes 526, and the second U-shaped holes 526 are opposite to the direction of the first U-shaped holes 513. The bottom plate layer 53 is composed of an insertion plate 531, a door-shaped steel plate 532 and a positioning steel plate 533 uniformly welded on the insertion plate 531, the positioning steel plate 533 is arranged in the same shape as the inverted L-shaped hole 524, the door-shaped steel plate 532 is outwardly protrudingly provided with an extension part 5322, the extension part 5322 is provided with a pin hole 5321, and the extension part 5322 is inserted into the insertion groove 525 and limited by the cooperation of the pin and the pin hole 5321. It should be noted that the position of the rib formwork 5 provided with the door-shaped steel plate 532 forms a rectangular groove 21 after pouring the concrete, the position not provided with the door-shaped steel plate 532 is communicated with the flat plate 22 formwork, and is integrated with the flat plate 22 after pouring the concrete.

[0058] Preferably, the connecting part 2 has a welding section 211 for welding with the first side plate 3 and a sawtooth section 212 for fitting with the connecting plate, when installed, the welding section is welded on the first side plate 3, and after welding, the protruding part of the sawtooth section 212 is flush with the inner side of the first side plate 3. Wherein, the connecting part 2 and the connecting plate 511 are arranged through sawtooth engagement, which can prevent the rib formwork 5 from being up and down deviated during pouring. In addition, the first limiting plate 522, the second limiting plate 527 and the plug plate 531 are slightly longer than the side rib plate 512 to limit the sliding of the connecting part 2 and the connecting plate 511, so as to prevent the rib formwork 5 from being left and right deviated during pouring, so as to realize the assembly of each rib formwork 5 and the prefabricated ribbed bottom plate production mold, and improve the construction efficiency.

[0059] It should be noted that when installed, the main layer 51 is pushed into the space between the two connecting parts 2 from the side, and is fixed through the sawtooth engagement between the connecting part 2 and the connecting plate 511. Then, the cover layer 52 is sleeved outside the main layer 51 from top to bottom, and the second U-shaped hole 523 and the arched hole 523 are aligned with the first U-shaped hole 513 respectively to form the reinforcing bar hole 54, the diameter of the reinforcing bar hole 54 is not less than the diameter of the transverse rib 6. Finally, the bottom plate layer 53 is pushed into the main layer 51 from the side of the first limiting plate 522, each door-shaped steel plate 532 is inserted into each insertion slot 525, and then a pin is inserted into the pin hole 5321 to complete the assembly of one rib formwork 5 and the bottom plate formwork. Repeat the above steps to complete the assembly of all rib formworks 5 and the bottom plate formwork, and then insert each transverse rib 6 into the reinforcing bar hole 54 to complete the prefabricated layer formwork construction.

[0060] Further, when the formwork is removed, the bottom plate layer 53 is pulled out from the side of the first limiting plate 522, the cover layer 52 is removed from the top, and then the main layer 51 is pushed out from the side.

[0061] The above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution falling within the idea of the present application belongs to the protection scope of the present application.

Claims

1. A method of constructing a precast ribbed slab concrete composite floor, characterised in that, The precast ribbed concrete composite floor slab includes a precast ribbed base slab and a cast-in-place layer. The precast ribbed base slab includes a flat plate and ribs spaced along the flat plate. Multiple rectangular grooves are equidistantly arranged on the bottom surface of each rib, and multiple transverse reinforcements are equidistantly arranged along the length of each rib. Each transverse reinforcement passes through a through-hole on the rib formwork and is staggered with the rectangular grooves. Longitudinal reinforcements perpendicular to the transverse reinforcements are arranged between two ribs, and each longitudinal reinforcement is tied to the transverse reinforcements to form a reinforcing mesh. The concrete formwork of the cast-in-place layer is poured onto the reinforcing mesh and integrated with the precast ribbed base slab. The rib formwork includes a main layer, a cover layer, and a bottom slab. The cover layer is fitted over the outside of the main layer, and the bottom slab is inserted into the upper limit of the cover layer and connected to the main layer. The rectangular groove is formed by the following: The main body layer includes two opposing rib side plates and connecting plates welded to both ends of the rib side plates. Multiple first U-shaped holes and rectangular holes are evenly staggered on the rib side plates. The cover plate layer includes opposing first and second limiting plates, and a top plate connecting the tops of the two limiting plates. Multiple arched holes and limiting holes are evenly staggered on the first limiting plate. The second limiting plate has slots and second U-shaped holes, the second U-shaped holes facing opposite directions to the first U-shaped holes, and together with the arched holes, forming through holes. The bottom plate layer includes an insert plate, which is welded with a portal steel plate and a positioning steel plate adapted to the limiting holes. The limiting holes are inverted L-shaped, and the positioning steel plates are similarly shaped to the limiting holes. The construction method includes the following steps: Factory prefabrication stage: Step 1: Production mold installation includes the installation of flat templates and rib templates; Step 2: Pass each transverse reinforcement bar through the through holes on the rib formwork; Step 3: Pour concrete into the flat formwork and rib formwork; Step 4: After curing and demolding, a precast ribbed base plate is formed; On-site construction phase: Step 1: Hoist each precast ribbed base plate and evenly tie and lap the longitudinal reinforcement bars onto the transverse distribution bars to complete the layout of the cast-in-place layer reinforcement mesh; Step 2: Erect formwork and pour cast-in-place concrete, wherein the height of the side formwork of the cast-in-place layer is the same as the height of the rib plate: Step 3: Curing and demolding.

2. The method of constructing a preformed ribbed slab concrete composite floor according to claim 1, wherein, The diameter of the through hole is not less than the diameter of the transverse reinforcement.

3. The method of constructing a preformed ribbed slab concrete composite floor according to claim 2, wherein, The top surface of the rib is flush with the top surface of the cast-in-place layer.

4. The construction method of the precast ribbed concrete composite floor slab according to claim 1, characterized in that, The flat template includes a bottom panel and a first side panel and a second side panel surrounding the bottom panel. Each of the two opposing first side panels is provided with a connecting part.

5. The construction method of the precast ribbed concrete composite floor slab according to claim 1, characterized in that, The portal steel plate is provided with a pin hole, and when the portal steel plate is inserted into the slot, it is limited by the pin and the pin hole.

6. The construction method of the precast ribbed concrete composite floor slab according to claim 4, characterized in that, The connecting portion has a welding section for welding to the first side plate and a serrated section for fitting to the connecting plate.

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