Split type ribbed laminated slab

Abstract

The utility model relates to the field of prefabricated parts, and aims to provide a split type ribbed laminated slab, a main body is a concrete laminated slab, a reinforcing mesh is pre-buried in the concrete laminated slab, and at least one group of split type ribs are arranged at the top of the concrete laminated slab; the split type rib comprises a plurality of rib units which are sequentially arranged at intervals in the left-right direction, and a set of supporting assemblies are connected between the reinforcing mesh and the left end and the right end of the split type rib. A split area for a pipeline to penetrate through is formed between every two adjacent rib units, and a force transmission connecting piece for connecting every two adjacent rib units is arranged above each split area. The laminated slab is provided with the split areas for the pipelines to penetrate through, so that the strength of the laminated slab is prevented from being damaged by punching, synchronous installation of a water power grid and a power grid can be realized, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated components, specifically a split-type ribbed composite slab. Background Technology

[0002] Ribbed composite slabs are mainly used in prefabricated engineering in the construction field. They combine the advantages of good integrity and fast construction speed of precast slabs. Due to their high rigidity, strong load-bearing capacity, and convenient and quick construction, they are widely used in construction to reduce construction period, reduce construction costs, and improve the overall benefits of buildings.

[0003] For example, Chinese invention patent application number CN202411009282.1 discloses a ribbed laminated plate and its manufacturing method. However, after the ribbed laminated plate product was formed, a defect was found in the product, specifically:

[0004] Because these ribbed composite slabs are prefabricated in the prefabrication plant, no installation paths for pipelines are reserved. This makes it difficult to coordinate the installation of water and electricity lines with the ribbed composite slabs during on-site assembly and construction. Additional holes need to be drilled, which reduces the structural strength of the ribbed composite slabs and affects construction efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type ribbed composite slab, which has a split area for pipe laying, avoiding drilling and damaging the strength of the composite slab, enabling simultaneous installation of water and electricity, and improving construction efficiency.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A split-type ribbed composite slab, the main body of which is a concrete composite slab, wherein a steel mesh is embedded in the concrete composite slab, and at least one set of split-type ribs is provided on the top of the concrete composite slab; the split-type ribs include a number of rib units arranged alternately on the left and right sides, and a set of support components is connected between the steel mesh and the left and right ends of the split-type ribs.

[0008] A separate area for pipelines is formed between two adjacent rib units, and a force-transmitting connector connecting the two adjacent rib units is provided above the separate area; the rib unit includes fixed C-shaped steels arranged at intervals facing each other on the left and right, the fixed C-shaped steels extending front and back with their openings facing each other, and a continuous C-shaped steel is connected between the front and rear ends of the two fixed C-shaped steels, the openings of the two continuous C-shaped steels facing each other, and a number of reinforcing C-shaped steels arranged at equal intervals are connected between the continuous C-shaped steels, and a concrete hardening area is formed between the fixed C-shaped steels, the reinforcing C-shaped steels and the continuous C-shaped steels;

[0009] The rib unit also includes concrete poured into the hardened concrete zone.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. By setting up split ribs and split areas, the split ribbed composite slab can retain high strength while reserving the installation path of pipelines, so that pipelines can pass through the split areas, avoiding the damage to the structural strength of the composite slab by drilling additional holes on the construction site, improving construction efficiency, and achieving the goal of installing water and electricity pipelines simultaneously.

[0012] 2. By setting up force-transmitting connectors, forces can be effectively transferred between two adjacent rib units, ensuring that the overall load-bearing performance of the composite slab is not reduced due to the reserved pipeline installation path, thereby enhancing the load-bearing capacity and improving structural safety. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of a split-type ribbed composite plate of this utility model;

[0014] Figure 2 yes Figure 1 A simplified schematic diagram of pipeline installation;

[0015] Figure 3 This is a schematic diagram of the internal structure of the rib unit of this utility model;

[0016] Figure 4 This is a structural schematic diagram of the force transmission connector of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the support assembly of this utility model;

[0018] Figure 6 This is a schematic diagram of the manufacturing process of this utility model. Figure 1 ;

[0019] Figure 7 This is a schematic diagram of the manufacturing process of this utility model. Figure 2 ;

[0020] Figure 8 This is a schematic diagram of the manufacturing process of this utility model. Figure 3 ;

[0021] Figure 9 This is a schematic diagram of the manufacturing process of this utility model. Figure 4 ;

[0022] Figure 10 This is a deflection calculation diagram for the construction stage of a utility model.

[0023] Figure 11 This is a utility model stress calculation diagram for reinforcing steel bars;

[0024] Figure 12 Overall deformation diagram of the lifting operation of this utility model.

[0025] Labeling Explanation: 1 Concrete Composite Slab, 2 Reinforcing Mesh, 30 Separate Zone, 31 Rib Unit, 311 Fixed C-shaped Steel, 312 Continuous C-shaped Steel, 313 Reinforced C-shaped Steel, 32 Force Transmission Connector, 321 Reinforcing Steel, 322 Bent Section, 4 Support Component, 41 Z-shaped Reinforcing Steel, 411 Horizontal Extension Section A, 412 Horizontal Extension Section B, 42 Transverse Fixed Reinforcing Steel A, 43 Transverse Fixed Reinforcing Steel B, 5 Integral Rib, 400 Composite Slab Bottom Formwork, 500 Composite Slab Side Formwork, 600 Composite Slab Waiting Area. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0027] like Figure 1-5 The diagram shown is a schematic representation of an embodiment of a split-type ribbed composite plate provided by this utility model:

[0028] A split-type ribbed composite slab, the main body of which is a concrete composite slab 1, wherein a steel mesh 2 is embedded in the concrete composite slab 1, and at least one set of split-type ribs is provided on the top of the concrete composite slab 1; the split-type ribs include a number of rib units 31 arranged alternately on the left and right sides, and a set of support components 4 are connected between the steel mesh 2 and the left and right ends of the split-type ribs.

[0029] A split area 30 for pipeline installation is formed between two adjacent rib units 31, and a force-transmitting connector 32 connecting the two adjacent rib units 31 is provided above the split area 30; the rib unit 31 includes fixed C-shaped steels 311 arranged at intervals on the left and right, the fixed C-shaped steels 311 extending front and back with their openings facing each other, and a continuous C-shaped steel 312 connecting the front and rear ends of the two fixed C-shaped steels 311, the openings of the two continuous C-shaped steels 312 facing each other, and a number of equally spaced reinforcing C-shaped steels 313 connecting the continuous C-shaped steels 312; a concrete hardening area is formed between the fixed C-shaped steels 311, the reinforcing C-shaped steels 313 and the continuous C-shaped steels 312.

[0030] The rib unit 31 also includes concrete poured into the hardened concrete zone.

[0031] Preferably, the span of the concrete composite slab 1 is 3.5m (i.e., the length of the long side of the concrete composite slab 1), and its rib length ratio is 0.7-0.8 (i.e., the length of the short side of the concrete composite slab 1 is 2.45m-2.8m).

[0032] Preferably, the rib unit 31 has a width of 200mm and a height of 55mm.

[0033] Preferably, the spacing between each rib unit 31 is 20cm.

[0034] The force transmission connector 32 includes a number of reinforcing steel bars 321 arranged at intervals. The reinforcing steel bars 321 are mounted on fixed C-shaped steel bars 311 opposite each other in two adjacent rib units 31, and the left and right ends of the reinforcing steel bars 321 have bent sections 322 that extend into the concrete hardening zone on the corresponding side.

[0035] The bottom of the bent section 322 is supported on the steel mesh 2, and the bent section 322 is fixedly connected to the steel mesh 2.

[0036] The support assembly 4 includes two Z-shaped steel bars 41 arranged at intervals. The Z-shaped steel bars 41 are erected on the upper side of the fixed C-shaped steel 311. The top of the Z-shaped steel bars 41 is attached to the upper side of the fixed C-shaped steel 311. One side of the Z-shaped steel bars 41 is inserted into the hardened concrete area. The bottom of the Z-shaped steel bars 41 is provided with a horizontal extension section A 411 located below the rib unit 31. The horizontal extension section A 411 is fixedly supported on the steel mesh 2. A transverse fixed steel bar A 42 extending forward and backward is fixed on the upper side of the two horizontal extension sections A 411. The transverse fixed steel bar A 42 is supported at the bottom of the rib unit 31.

[0037] The other side of the Z-shaped steel bar 41 is located outside the rib unit 31, forming an angle with the outer wall of the fixed C-shaped steel 311, and its bottom is provided with a horizontal extension section B 412 fixedly supported on the steel mesh 2 inside the composite slab. A transverse fixed steel bar B 43 extending forward and backward is fixed on the upper side of the two horizontal extension sections B 412.

[0038] The upper wing edge of the fixed C-shaped steel 311 is provided with several positioning openings for assisting in the positioning of the zigzag steel bars 41.

[0039] The upper and lower flanges of the full-length C-shaped steel 312 are both provided with rolled edges that extend vertically into their openings.

[0040] The reinforced C-shaped steel 313 extends front and back, and both ends of its web are provided with notches to allow the upper and lower flanges of the full-length C-shaped steel 312 to extend into.

[0041] The fixed C-shaped steel 311, the continuous C-shaped steel 312, and the reinforced C-shaped steel 313 are all cold-formed thin-walled steel sections.

[0042] The top of the concrete composite slab 1 is also provided with several integral ribs 5 extending to the left and right. The length of the integral ribs 5 is equal to the length of the split ribs, and the integral ribs 5 are parallel to the split ribs.

[0043] The manufacturing method of this utility model is roughly as follows:

[0044] Step S1: Erect the composite slab formwork;

[0045] like Figure 6 As shown, the bottom formwork 400 of the composite slab is placed on a horizontal surface, and the positioning axis of the steel mesh 2 inside the composite slab and the side formwork 500 of the composite slab are laid out on the bottom formwork 400. Then, the steel mesh 2 is placed in its designed position, and the side formwork 500 of the composite slab is reliably supported according to the positioning axis of the side formwork 500. The bottom formwork 400 and the side formwork 500 of the composite slab formwork ...

[0046] Step S2: Fabricate rib unit 31;

[0047] Place two fixed C-shaped steels 311 spaced apart on the left and right, with the openings of the two fixed C-shaped steels 311 facing each other. Then, insert two full-length C-shaped steels 312 between the openings of the two fixed C-shaped steels 311. The two full-length C-shaped steels 312 are arranged in parallel front and back with their openings facing each other. Use crimping pliers to reliably crimp the full-length C-shaped steels 312 and the fixed C-shaped steels 311 at the overlapping point.

[0048] Several reinforcing C-shaped steels 313 are placed at equal intervals between two full-length C-shaped steels 312, and the front and rear ends of the reinforcing C-shaped steels 313 are reliably crimped with the overlapping parts of the full-length C-shaped steels 312 using crimping pliers.

[0049] Step S3; Install the split ribs;

[0050] like Figure 6-8 As shown, several rib units 31 are placed on the upper side of the steel mesh 2 at intervals. Two Z-shaped steel bars 41 are erected at intervals on the upper side of the fixed C-shaped steel 311 at the left end of the leftmost rib unit 31 and the upper side of the fixed C-shaped steel 311 at the right end of the rightmost rib unit 31. Then, the support leg of one side of the Z-shaped steel bar 41 is inserted into the concrete hardening area through the positioning hole. A transverse fixing steel bar A 42 is welded on the upper side of the horizontal extension section A 411 of the two Z-shaped steel bars 31, so that the transverse fixing steel bar A 42 is supported at the bottom of the rib unit 31.

[0051] Subsequently, a horizontal fixing bar B 43 is welded to the horizontal extension section B 412 at the bottom of the other side of the two Z-shaped steel bars 41. Finally, the horizontal extension section A 411 and the horizontal extension section B 412 are welded or tied to the steel mesh 2 respectively.

[0052] Several reinforcing bars 321 are erected on the fixed C-shaped steel 311 opposite to each other in the adjacent rib unit 31, and the bent sections 322 at the left and right ends of the reinforcing bars 321 extend into the concrete hardening area on the corresponding side.

[0053] Step S4: As Figure 9 As shown, an integral rib 5 is installed (the integral rib 5 may not be installed in some embodiments, depending on actual needs). The integral rib 5 refers to the invention patent with Chinese patent application number CN202411009282.1. The integral rib 5 in this utility model can be made by pouring concrete into the rib casting template disclosed in the patent. The left and right ends of the integral rib 5 are respectively connected and fixed to the steel mesh (the fixing method is the same as that of the split rib in step S4, so it will not be described in detail here).

[0054] Step S5: Pour concrete;

[0055] Concrete is poured in the pre-casting area 600 and the concrete hardening area of ​​the composite slab. During the pouring process, the concrete is fully vibrated and leveled. After the pouring is completed, the concrete is cured until the hardening strength of the concrete reaches the design requirements. Then, the side formwork 500 and the bottom formwork 400 of the composite slab are removed, and the production is completed.

[0056] Furthermore, the steel mesh 2 is formed by fixing several steel bars arranged in a longitudinal and transverse interval. The edge of the steel mesh 2 extends out of the composite plate side mold 500, and the composite plate side mold 500 is provided with through holes matching the steel bars in the steel mesh 2. The through holes and the through steel bars are filled with sealing strips to prevent concrete from flowing out.

[0057] This invention employs finite element analysis for calculation, and the calculation process is roughly as follows:

[0058] The preferred dimensions of this utility model are selected as follows: slab span of 3.5m, concrete composite slab thickness of 60mm, rib unit 31 width of 200mm, rib unit 31 height of 55mm, and split area 300 length of 20cm. The weakening effect of local openings in the ribs on the overall rigidity of the slab and the beneficial effect of reinforcing steel bars are discussed.

[0059] Loads were applied, and load calculations were performed considering the self-weight of the present invention, the self-weight of the secondary concrete pouring after assembly, and the construction live load of 1.5 KN / ㎡. The results showed that the deflection change of the split rib design compared to the single integral rib 5 was not significant. Figure 10 As shown, the deflection increase is only 114%. This can be mitigated by selecting several reinforcing steel bars of HRB400 specification 321 (three bars are used in this calculation). Figure 11 As shown, the Mises equivalent stress of the reinforcing steel bar 321 is 152 N / mm², which meets the design requirements and gives the present invention good structural stability.

[0060] like Figure 12 As shown, under lifting conditions, the maximum vertical deflection at the edge of the mid-span plate is 0.72mm, and the deflection-to-span ratio is 0.72 / 2600 (spacing between lifting points) = 1 / 2611, which meets the deformation limit.

[0061] In summary, this utility model has reserved a pipeline installation path, avoiding the damage to the composite slab by drilling, and can realize the simultaneous installation of water and electricity pipelines, thus improving construction efficiency.

[0062] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A split-type ribbed composite slab, the main body of which is a concrete composite slab (1), wherein a steel mesh (2) is pre-embedded in the concrete composite slab (1), characterized in that: The top of the concrete composite slab (1) is provided with at least one set of split ribs; the split ribs include several rib units (31) arranged alternately on the left and right sides, and a set of support components (4) are connected between the steel mesh (2) and the left and right ends of the split ribs. A split area (30) for pipeline installation is formed between two adjacent rib units (31), and a force-transmitting connector (32) for connecting the two adjacent rib units (31) is provided above the split area (30); the rib unit (31) includes fixed C-shaped steel (311) arranged in opposite directions, the fixed C-shaped steel (311) extends front and back and has openings facing each other, and a continuous C-shaped steel (312) is connected between the front end and the rear end of the two fixed C-shaped steel (311), the openings of the two continuous C-shaped steel (312) are facing each other, and a number of equally spaced reinforcing C-shaped steel (313) are connected between the continuous C-shaped steel (312), and a concrete hardening area is formed between the fixed C-shaped steel (311), the reinforcing C-shaped steel (313) and the continuous C-shaped steel (312); The rib unit (31) also includes concrete poured into the concrete hardening zone.

2. The split-type ribbed laminated plate according to claim 1, characterized in that: The force-transmitting connector (32) includes a number of reinforcing bars (321) spaced apart front and rear. The reinforcing bars (321) are mounted on fixed C-shaped steel (311) opposite to each other in two adjacent rib units (31), and the left and right ends of the reinforcing bars (321) have bent sections (322) that extend into the concrete hardening zone on the corresponding side.

3. The split-type ribbed laminated plate according to claim 2, characterized in that: The bottom of the bent section (322) is mounted on the steel mesh (2), and the bent section (322) is fixedly connected to the steel mesh (2).

4. The split-type ribbed laminated plate according to claim 1, characterized in that: The support assembly (4) includes two Z-shaped steel bars (41) arranged at intervals. The Z-shaped steel bars (41) are erected on the upper side of the fixed C-shaped steel (311). The top of the Z-shaped steel bars (41) is attached to the upper side of the fixed C-shaped steel (311). One side of the Z-shaped steel bars (41) is inserted into the hardened concrete area. The bottom of the Z-shaped steel bars (41) is provided with a horizontal extension section A (411) located below the rib unit (31). The horizontal extension section A (411) is fixedly supported on the steel mesh (2). A transverse fixed steel bar A (42) is fixed on the upper side of the two horizontal extension sections A (411). The transverse fixed steel bar A (42) is supported at the bottom of the rib unit (31). The other side of the zigzag steel bar (41) is located outside the rib unit (31), forming an angle with the outer wall of the fixed C-shaped steel (311), and its bottom is provided with a horizontal extension section B (412) fixedly supported on the steel mesh (2) inside the composite slab, and a transverse fixed steel bar B (43) extending forward and backward is fixed on the upper side of the two horizontal extension sections B (412).

5. The split-type ribbed laminated plate according to claim 1, characterized in that: The upper flange edge of the fixed C-shaped steel (311) is provided with several positioning openings for assisting in the positioning of the zigzag steel bars (41).

6. The split-type ribbed laminated plate according to claim 1, characterized in that: The upper and lower flanges of the full-length C-shaped steel (312) are provided with rolled edges that extend vertically into their openings.

7. The split-type ribbed laminated plate according to claim 1, characterized in that: The reinforced C-shaped steel (313) extends forward and backward, and both ends of its web are provided with notches to allow the upper and lower flanges of the long C-shaped steel (312) to extend in.

8. The split-type ribbed laminated plate according to claim 1, characterized in that: The fixed C-shaped steel (311), the continuous C-shaped steel (312), and the reinforced C-shaped steel (313) are all cold-formed thin-walled steel.

9. The split-type ribbed composite plate according to any one of claims 1 to 8, characterized in that: The top of the concrete composite slab (1) is also provided with several integral ribs (5) extending to the left and right. The length of the integral ribs (5) is equal to the length of the split ribs, and the integral ribs (5) are parallel to the split ribs.

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