Prefabricated multi-ribbed channel plate

Abstract

A prefabricated multi-ribbed channel-shaped plate is provided with staggered first horizontal ribs, second horizontal ribs, first vertical ribs and second vertical ribs at the lower part of the plate body, the first horizontal ribs are provided with bending forming ribs and prestressed steel wires, the second horizontal ribs are provided with first U-shaped forming ribs and prestressed steel wires, and the second vertical ribs are provided with second U-shaped forming ribs, and the connection strength performance of the horizontal ribs and the vertical ribs is improved through the horizontal ribs and the vertical ribs in the plate body. The multi-rib structure is adopted, the two side edges are half ribs, the middle part is a full rib, a spatial grid structure is formed, the overall stiffness and bearing capacity are enhanced, the integrity and deformation resistance of the multi-ribbed plate are improved, and the multi-ribbed plate is suitable for large-span heavy-load working conditions, such as industrial plants, large public buildings and the like, and can bear a large live load. In buildings, such as residences and office buildings, which are sensitive to layer height, the multi-ribbed plate can reduce the structural height, improve the building headroom, realize the design of no column and no wall in a large space, and improve the spatial experience. Not only can the plate bottom cracking and deflection deformation problems be greatly reduced during construction and use, the user experience is improved, but also the needs of different users are met.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, specifically a prefabricated multi-ribbed channel plate. Background Technology

[0002] Traditional concrete floor slabs, under large-span, heavy-load conditions, typically require increased structural height to meet load-bearing requirements, leading to reduced building clearance, increased floor height, and higher costs. Furthermore, ordinary composite slabs are prone to problems such as bottom cracking and deflection deformation during large-span construction, impacting user experience. While existing precast slab technology has addressed some of these issues, it still has limitations in large-span, heavy-load, and height-sensitive buildings. Utility Model Content

[0003] The purpose of this invention is to provide a prefabricated multi-ribbed channel plate, which effectively enhances the strength of the structure under large-span heavy-load conditions through the multi-ribbed structure at the bottom of the plate, thus solving the problems in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a prefabricated multi-ribbed channel plate, including a plate body, with first transverse ribs provided on both sides of the plate body along its length direction, and two sets of second transverse ribs arranged side by side on the plate body between the first transverse ribs. First longitudinal ribs are provided on both sides of the plate body along its width direction, and second longitudinal ribs are provided on the plate body between the first longitudinal ribs. The first transverse ribs, second transverse ribs, first longitudinal ribs, and second longitudinal ribs are all located on the same side of the plate body. The plate body contains several vertically arranged transverse and longitudinal ribs, and both ends of each transverse rib are bent along its length direction. The first longitudinal rib is bent into the first longitudinal rib, and both ends of each longitudinal rib are bent into the first transverse rib. Several bent ribs are arranged along the length of the first transverse rib. Several first U-shaped ribs are arranged along the length of the second transverse rib. Prestressed steel strands are arranged along the length of the first and second transverse ribs. The prestressed steel strands are made of at least three steel bars spirally wound together. Spiral ribs are fitted at both ends of the prestressed steel strands along the length of the second longitudinal rib. Several second U-shaped ribs are arranged along the length of the second longitudinal rib. The first transverse rib has a first reinforcing rib arranged along its length, which connects several bent ribs into one piece. The second transverse rib has a second reinforcing rib arranged along its length, which connects several first U-shaped ribs into one piece. The first longitudinal rib has a third reinforcing rib arranged along its length, which connects the bent ends of several transverse ribs into one piece. The second longitudinal rib has a fourth and a fifth reinforcing rib arranged along its length, with the fifth reinforcing rib located above the fourth reinforcing rib. The fourth and fifth reinforcing ribs connect several second U-shaped ribs into one piece. A hook is installed on the plate. The first transverse rib, second transverse rib, first longitudinal rib, second longitudinal rib, and hook are located on both sides of the plate. A protruding edge arranged along its length is also provided on the outer side of the first transverse rib. The distance between the first transverse rib and the adjacent second transverse rib is equal to the distance between two sets of second transverse ribs. The distance between the second longitudinal rib and the first longitudinal ribs on both sides is equal. At least one set of additional connecting structures is installed on the plate. Each additional connecting structure includes several portal frames mounted on the plate, located above the first longitudinal rib. Additional connecting ribs are also installed within the portal frames. Each additional connecting rib has a corresponding column at both ends along its length. When the columns are horizontally arranged, they can pass through the portal frames; when vertically arranged, they can contact and limit the movement of the portal frames. Each additional connecting rib consists of two connecting ribs. One end of each connecting rib along its length has a corresponding column, and the other end has a threaded rod. A threaded sleeve is fitted between the threaded rods of the two connecting ribs. Rotating the threaded sleeve adjusts the distance between the columns on the two connecting ribs.

[0005] The positive effects of this utility model are as follows: The precast multi-ribbed channel slab of this utility model has staggered first horizontal ribs, second horizontal ribs, first longitudinal ribs, and second longitudinal ribs at the bottom of the slab. The first horizontal ribs contain bent forming ribs and prestressed steel strands; the second horizontal ribs contain first U-shaped forming ribs and prestressed steel strands; and the second longitudinal ribs contain second U-shaped forming ribs. The connection strength of the horizontal and longitudinal ribs is enhanced through the horizontal and longitudinal ribs within the slab. The multi-ribbed structure, with half-ribs on both sides and full ribs in the middle, forms a spatial grid structure, enhancing overall rigidity and load-bearing capacity. This improves the integrity and deformation resistance of the multi-ribbed slab, making it suitable for large-span, heavy-load applications such as industrial plants and large public buildings. It can withstand large live loads. In residential and office buildings where floor height is sensitive, this multi-ribbed slab can reduce structural height, increase building clearance, and enable column-free and wall-free designs in large spaces, enhancing the spatial experience. Not only does it greatly reduce the problems of bottom cracking and deflection deformation during construction and use, improving the user experience, but the multi-ribbed design also allows for flexible arrangement of partitions and equipment in large spaces, meeting the needs of different users. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model;

[0007] Figure 2 This is a top view of the present invention;

[0008] Figure 3 yes Figure 2 An enlarged view of the sectional view along the AA direction;

[0009] Figure 4 yes Figure 2 An enlarged view of the BB-axis sectional view;

[0010] Figure 5 This is a schematic diagram of a structure with additional connecting structures on the plate.

[0011] Figure 6 This is a construction diagram showing the arrangement of additional connection structures between two sets of precast multi-ribbed trough slabs on a precast beam.

[0012] Figure 7 This is a construction diagram showing the arrangement of additional connection structures between precast multi-ribbed slabs and precast walls;

[0013] Figure 8 This is a schematic diagram of the additional connection structure consisting of two connecting ribs. Detailed Implementation

[0014] The prefabricated multi-ribbed grooved plate described in this utility model, such as Figure 1-4As shown, the plate includes a plate 1. First transverse ribs 2 are provided on both sides of the plate 1 along its length. Two sets of second transverse ribs 3 are arranged side-by-side on the plate 1 between the first transverse ribs 2. First longitudinal ribs 4 are provided on both sides of the plate 1 along its width. Second longitudinal ribs 5 are provided on the plate 1 between the first longitudinal ribs 4. The transverse and longitudinal ribs are arranged perpendicularly and alternately. The first transverse ribs 2, second transverse ribs 3, first longitudinal ribs 4, and second longitudinal ribs 5 are all located on the same side of the plate 1.

[0015] To enhance the strength of the plate 1, the plate 1 is provided with several vertically arranged transverse ribs 6 and longitudinal ribs 7. To enhance the connection strength between the plate 1 and the ribs located on the side, both ends of each transverse rib 6 are bent into the first longitudinal rib 4 in the length direction, and both ends of each longitudinal rib 7 are bent into the first transverse rib 2 in the length direction.

[0016] To achieve the casting and molding of each rib and improve the structural strength of the rib itself, several bent forming ribs 8 are provided in the first transverse rib 2 along the length direction, and several first U-shaped forming ribs 9 are provided in the second transverse rib 3 along the length direction. Both the first transverse rib 2 and the second transverse rib 3 contain prestressed steel strands 10 arranged along the length direction. Each prestressed steel strand 10 is formed by spirally winding at least three steel bars, and spiral ribs 11 are fitted at both ends of the prestressed steel strand 10 along its length direction. Several second U-shaped forming ribs 12 are provided in the second longitudinal rib 5 along the length direction.

[0017] The prestressed steel strand 10 mentioned above needs to be prestressed in advance during the fabrication of the multi-ribbed channel plate. Usually, one prestressed steel strand 10 is adapted to multiple channel plates. After the multiple channel plates are fabricated, the interconnected prestressed steel strands 10 are cut to obtain individual multi-ribbed channel plates. Due to the prestress applied, the prestressed steel strand 10 will tend to shrink during the cutting process. To avoid this situation, spiral ribs 11 are added to both ends of the prestressed steel strand 10 in the length direction in each multi-ribbed channel plate to prevent shrinkage at the moment of cutting.

[0018] The multi-ribbed structure described above allows for adjustments to the number of ribs based on span and load requirements. The two sides can be semi-ribbed, while the middle section is fully ribbed, forming a spatial grid structure that enhances overall stiffness and load-bearing capacity. The second longitudinal rib, 5, is a relatively short stiffening rib that, together with the side edge banding, transverse ribs, and longitudinal ribs, forms a spatial grid, further strengthening the integrity and deformation resistance of the multi-ribbed plate.

[0019] In addition, the prefabricated multi-ribbed channel plate with the above structure also has the following advantages:

[0020] Construction convenience: ① No formwork or support required: Multi-ribbed panels are prefabricated in the factory, eliminating the need for formwork and support during on-site installation, greatly simplifying the construction process and shortening the construction period. ② Pipeline separation design: Water and electricity pipelines can be run through the ribs of the multi-ribbed panels, achieving pipeline separation and facilitating later dismantling, modification, and maintenance. A thin suspended ceiling under the ribs can achieve a flat bottom, meeting both aesthetic and functional requirements. ③ End-sealing plate design: Multi-ribbed panels have end-sealing plates at the ends, eliminating the need for additional baffles when overlapping beams or shear walls, facilitating concrete pouring, and improving the overall integrity of the multi-ribbed panels.

[0021] Wide range of applications: ① Suitable for large-span heavy-load applications: This multi-ribbed composite slab is suitable for large-span heavy-load conditions, such as industrial plants and large public buildings, and can withstand large live loads, including partition wall live loads. ② Height-sensitive buildings: In residential buildings, office buildings, and other buildings sensitive to floor height, this multi-ribbed slab can reduce the structural height, increase the building's net height, and enable column-free and wall-free designs in large spaces, enhancing the spatial experience.

[0022] Enhanced User Experience: ① Reduced Cracking and Deflection: Due to its multi-ribbed design, this multi-ribbed panel significantly reduces bottom cracking and deflection during construction and use, improving the user experience. ② Spatial Flexibility: The multi-ribbed design allows for flexible arrangement of partitions and equipment in large spaces, meeting the needs of different users.

[0023] Furthermore, in order to improve the structural strength of the first transverse rib 2, the second transverse rib 3, the first longitudinal rib 4 and the second longitudinal rib 5, the first transverse rib 2 may be provided with a first reinforcing rib 13 arranged along the length direction. The first reinforcing rib 13 connects several bent and shaped ribs 8 into one piece. The first reinforcing rib 13 and the bent and shaped ribs 8 constitute the metal skeleton structure inside the concrete of the first transverse rib 2.

[0024] The second transverse rib 3 may be provided with a second reinforcing rib 14 arranged along the length direction. The second reinforcing rib 14 connects several first U-shaped ribs 9 into one piece. The second reinforcing rib 14 and the first U-shaped ribs 9 constitute the metal skeleton structure inside the concrete of the second transverse rib 3.

[0025] The first longitudinal rib 4 may be provided with a third reinforcing rib 15 arranged along the length direction. The third reinforcing rib 15 connects the bends at the ends of several transverse ribs 6 into one unit. The third reinforcing rib 15 and the bends at the ends of the transverse ribs 6 constitute the metal skeleton structure inside the concrete of the first longitudinal rib 4.

[0026] The second longitudinal rib 5 may be provided with a fourth reinforcing rib 16 and a fifth reinforcing rib 17 arranged along the length direction. The fifth reinforcing rib 17 is located above the fourth reinforcing rib 16. The fourth reinforcing rib 16 and the fifth reinforcing rib 17 connect several second U-shaped forming ribs 12 into one unit. The fourth reinforcing rib 16, the fifth reinforcing rib 17 and the second U-shaped forming ribs 12 constitute the metal skeleton structure inside the concrete of the second longitudinal rib 5.

[0027] Furthermore, in order to facilitate the hoisting and transfer of the channel plate, a hook 18 can be installed on the plate body 1, and the first transverse rib 2, the second transverse rib 3, the first longitudinal rib 4, the second longitudinal rib 5 and the hook 18 are respectively located on both sides of the plate body 1.

[0028] On the outer side of the first transverse rib 2, there is also a protruding edge 24 arranged along the length direction. The protruding edge 24 can form an L-shaped tongue and groove design between the interlocking trough plates, which is convenient for pouring concrete after splicing to form an integral plate. Reinforcement structure can be added at the joint to ensure the strength and integrity of the splice.

[0029] To ensure that each rib is in force balance on the channel plate, the distance between the first transverse rib 2 and the adjacent second transverse rib 3 is equal to the distance between the two sets of second transverse ribs 3, and the distance between the second longitudinal rib 5 and the first longitudinal ribs 4 on both sides is equal.

[0030] Furthermore, to ensure that adjacent slabs 1 do not undergo significant deformation during the assembly and casting of the precast multi-ribbed channel slabs, and to maintain the connection strength between adjacent slabs 1, at least one set of additional connection structures is installed on the slab 1. For example... Figure 5 As shown, the additional connection structure includes several portal frames 19 set on the plate 1. The portal frames 19 are located on the upper side of the first longitudinal rib 4. The height of the portal frames 19 is less than the width distance, forming a relatively flat frame structure.

[0031] An additional connecting rib 20 is also installed inside the portal frame 19. Both ends of the additional connecting rib 20 in the length direction are provided with columns 21 corresponding to the portal frame 19. When the columns 21 are arranged horizontally, they can pass through the portal frame 19. When the columns 21 are arranged vertically, they can contact and limit the portal frame 19, forming a connection limit between adjacent plates 1, and avoiding large bending deformation during subsequent pouring.

[0032] like Figure 6 As shown, when the two sets of slabs 1 are erected on the precast beam, the first longitudinal rib 4 of the slab 1 is first placed on the precast beam. Then, the additional connecting bar 20 is rotated until the column 21 is in a horizontal state, so that the additional connecting bar 20 passes through the portal frame 19 on the adjacent slab 1. After the column 21 moves to the position of each corresponding portal frame 19, the additional connecting bar 20 is rotated so that the column 21 is in a vertical state and located at the outer contact position of the portal frame 19. It can then be welded and fixed, so that one additional connecting bar 20 forms anti-deformation tension between adjacent channel plates, which can effectively prevent deformation exceeding the amplitude when the concrete is poured for load bearing.

[0033] The erection of adjacent channel slabs, since they are interconnected, only requires one set of additional connecting structures on slab 1. However, if the channel slabs at the ends need to be connected not only to adjacent channel slabs but also to the precast wall, additional connecting structures must be installed at both ends of slab 1 along its length. Figure 7 As shown, the connection between the slab 1 and the precast wall requires bending one end of the additional connecting bar 20 along its length so that it enters the interior of the precast wall and forms an integral part with the wall during subsequent concrete pouring. This effectively improves the connection strength and performance between the trough slab and the wall, without hindering the normal construction of the wall and the trough slab.

[0034] Furthermore, in order to make the additional connecting reinforcement 20 applicable to precast beams with different spans, anti-deformation tensioning between adjacent channel plates can be achieved according to different length requirements, such as... Figure 8 As shown, the additional connecting rib 20 consists of two connecting ribs. One end of each connecting rib along its length is provided with a corresponding column 21 of the portal frame 19, and the other end of each connecting rib along its length is provided with a screw 22. A screw sleeve 23 is installed between the screws 22 of the two connecting ribs. Rotating the screw sleeve 23 can adjust the distance between the columns 21 on the two connecting ribs.

[0035] This utility model discloses a precast multi-ribbed channel slab, which features innovative structure and convenient construction design. It provides a multi-ribbed composite slab suitable for large-span, heavy-load conditions, offering significant performance advantages and broad application prospects. This patent not only solves many problems in existing technologies but also ensures its uniqueness and innovation through novel design.

[0036] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A prefabricated multi-ribbed channel plate, characterized in that: The plate includes a plate (1), with first transverse ribs (2) on both sides of the plate (1) along its length. Two sets of second transverse ribs (3) are arranged side by side on the plate (1) between the first transverse ribs (2). First longitudinal ribs (4) are provided on both sides of the plate (1) along its width. Second longitudinal ribs (5) are provided on the plate (1) between the first longitudinal ribs (4). The first transverse ribs (2), second transverse ribs (3), first longitudinal ribs (4), and second longitudinal ribs (5) are all located on the same side of the plate (1). The plate (1) contains several vertically arranged transverse ribs (6) and longitudinal ribs (7). Both ends of each transverse rib (6) along its length are bent into the first longitudinal ribs (4). In the first transverse rib (2), both ends of each longitudinal rib (7) are bent into the first transverse rib (2). Several bent ribs (8) are arranged along the length direction in the first transverse rib (2). Several first U-shaped ribs (9) are arranged along the length direction in the second transverse rib (3). Prestressed steel strands (10) are arranged along the length direction in both the first transverse rib (2) and the second transverse rib (3). The prestressed steel strands (10) are made of at least three steel bars spirally wound together. Spiral ribs (11) are fitted at both ends of the prestressed steel strands (10) along the length direction. Several second U-shaped ribs (12) are arranged along the length direction in the second longitudinal rib (5).

2. The prefabricated multi-ribbed channel plate according to claim 1, characterized in that: The first transverse rib (2) is provided with a first reinforcing rib (13) arranged along the length direction. The first reinforcing rib (13) connects several bent forming ribs (8) into one piece. The second transverse rib (3) is provided with a second reinforcing rib (14) arranged along the length direction. The second reinforcing rib (14) connects several first U-shaped forming ribs (9) into one piece. The first longitudinal rib (4) is provided with a third reinforcing rib (15) arranged along the length direction. The third reinforcing rib (15) connects the bends at the ends of several transverse ribs (6) into one piece. The second longitudinal rib (5) is provided with a fourth reinforcing rib (16) and a fifth reinforcing rib (17) arranged along the length direction. The fifth reinforcing rib (17) is located above the fourth reinforcing rib (16). The fourth reinforcing rib (16) and the fifth reinforcing rib (17) connect several second U-shaped forming ribs (12) into one piece.

3. A prefabricated multi-ribbed channel plate according to claim 1, characterized in that: The plate (1) is equipped with a hook (18). The first horizontal rib (2), the second horizontal rib (3), the first longitudinal rib (4), the second longitudinal rib (5) and the hook (18) are located on both sides of the plate (1). A protruding edge (24) arranged along the length direction is also provided on the outside of the first horizontal rib (2).

4. A prefabricated multi-ribbed channel plate according to claim 1, characterized in that: The distance between the first transverse rib (2) and the adjacent second transverse rib (3) is equal to the distance between the two sets of second transverse ribs (3), and the distance between the second longitudinal rib (5) and the first longitudinal ribs (4) on both sides is equal.

5. A prefabricated multi-ribbed channel plate according to claim 1, characterized in that: At least one set of additional connecting structures is installed on the plate (1). The additional connecting structures include several portal frames (19) set on the plate (1). The portal frames (19) are located on the upper side of the first longitudinal rib (4). Additional connecting ribs (20) are also installed in the portal frames (19). The two ends of the additional connecting ribs (20) in the length direction are provided with columns (21) corresponding to the portal frames (19). When the columns (21) are arranged horizontally, they can pass through the portal frames (19). When the columns (21) are arranged vertically, they can contact and limit the position of the portal frames (19).

6. A prefabricated multi-ribbed channel plate according to claim 5, characterized in that: The additional connecting rib (20) consists of two connecting ribs. One end of each connecting rib along its length is provided with a column (21) corresponding to the portal frame (19), and the other end of each connecting rib along its length is provided with a screw (22). A screw sleeve (23) is installed between the screws (22) of the two connecting ribs. Rotating the screw sleeve (23) can adjust the distance between the columns (21) on the two connecting ribs.

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