Prestressed concrete ribbed composite slab

Abstract

The utility model relates to the field of prestressed ribbed laminated slab, concretely provides a kind of prestressed concrete ribbed laminated slab, including splicing subassembly and hoisting subassembly, the hoisting subassembly is installed on splicing subassembly, the splicing subassembly includes laminated slab body, and the inside of laminated slab body is equipped with multiple groups of connecting tendon, the left side surface of connecting tendon is fixed with connecting block one, and the side surface of connecting block one is fixed with multiple groups of trapezoidal block one.The utility model is positioned splicing between laminated slab body by setting the trapezoidal block one and trapezoidal block two of mutual adaptation, the through-hole formed on its surface forms longitudinal through channel, so that building reinforcement can be sequentially arranged in the through-hole of adjacent laminated slab, directly strengthen the overall bearing capacity between trapezoidal block, indirectly improve the structural stability of laminated slab combination, and the corner block fixed on the surface of connecting block one and connecting block two is automatically attached to the corner area of laminated slab body with assembly action, to form physical protection barrier.

Description

Technical Field

[0001] This utility model relates to the field of prestressed ribbed composite slabs, and more particularly to a prestressed concrete ribbed composite slab. Background Technology

[0002] Prestressed concrete composite slabs (also known as PK slabs) are a new type of precast component widely used in the industrialization of construction. Their core advantage lies in the efficient integration of steel reinforcement and concrete through factory production, significantly reducing on-site wet work. These components typically consist of a precast ribbed base slab and a cast-in-place layer, relying on prestressed steel strands to bear the main tensile stress. They are characterized by light weight, high load-bearing capacity, and short construction cycles. In high-rise residential buildings, public buildings, and industrial plants, composite slabs, as floor systems, can significantly reduce formwork usage and improve construction efficiency. However, with the diversification of building functions, the adaptability of traditional composite slabs under complex conditions still needs further improvement, especially in large spans, heavy loads, or special environmental conditions. Balancing structural performance with ease of construction has become a key direction for technological breakthroughs.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: existing prestressed concrete composite slabs have a technical defect of poor positioning accuracy during splicing operations. Specifically, there is a lack of reliable guiding and limiting structures between adjacent composite slabs, which leads to repeated adjustments of position during on-site assembly. This not only prolongs the construction period but also causes uneven stress on the connection parts due to manual calibration deviations. Utility Model Content

[0004] To address the technical shortcomings of poor positioning accuracy in the splicing of existing prestressed concrete composite slabs, specifically the lack of reliable guiding and limiting structures between adjacent composite slabs, which necessitates repeated adjustments during on-site assembly, thus extending the construction period and causing uneven stress at the connection points due to manual calibration deviations, this application provides a prestressed concrete ribbed composite slab.

[0005] This application provides a prestressed concrete ribbed composite slab with the following technical solution: A prestressed concrete ribbed composite slab includes a splicing assembly and a hoisting assembly. The hoisting assembly is installed on the splicing assembly. The splicing assembly includes a composite slab body, and the interior of the composite slab body is provided with multiple sets of connecting ribs. A connecting block 1 is fixed to the left side surface of the connecting rib, and multiple sets of trapezoidal blocks 1 are fixed to the side surface of the connecting block 1. A rectangular strip is fixed to the bottom surface of the trapezoidal blocks 1. A connecting block 2 is fixed to the right side surface of the connecting rib, and a trapezoidal block 2 is fixed to the side surface of the connecting block 2. Both trapezoidal blocks 2 and trapezoidal blocks 1 have through holes on their surfaces. Corner blocks are fixed to the surfaces of both connecting blocks 1 and 2. A T-shaped plate is fixed to the surface of the connecting rib, and multiple sets of reinforcing ribs are fixed to the side surface of the T-shaped plate. An upper structure is fixed to the top surface of the composite slab body, and multiple sets of grooves are opened on the side surface of the upper structure.

[0006] By adopting the above scheme, the operator first moves the composite slab body to a suitable work position along the preset position, and then precisely embeds the rectangular plate of another set of composite slab bodies into the trapezoidal block 2 on the side surface of the adjacent composite slab in a sliding fit to form a snap-fit ​​structure. At this time, the through holes opened on the surface of trapezoidal block 2 and trapezoidal block 1 are aligned with the axis, which makes it easy for the building steel bars to pass through the through holes to achieve through reinforcement. This design effectively improves the structural strength of trapezoidal block 2 and trapezoidal block 1, and simultaneously optimizes the actual use effect. At the same time, the corner blocks set on the surface of connecting block 1 and connecting block 2 automatically fit the corner parts of the composite slab body as the components are assembled, forming an anti-collision protective layer.

[0007] Further, the hoisting assembly includes a rectangular plate one disposed on the surface of the connecting rib, and a rectangular plate two fixed to the bottom surface of the rectangular plate one. The surface of the rectangular plate one is provided with multiple sets of rectangular grooves, and the surface of the rectangular plate one is provided with multiple sets of hoisting holes of different diameters. The surface of the rectangular plate one is provided with multiple sets of round holes.

[0008] By adopting the above scheme, the round holes on the surface of the first rectangular plate maintain close contact with the outer wall of the connecting rib during the splicing process, and the second rectangular plate fixed at its bottom is connected to the lifting equipment through the lifting holes, so that the composite plate body can be raised and lowered smoothly in the vertical direction during the hoisting process, which significantly improves the hoisting stability and construction efficiency.

[0009] Furthermore, the surface of the connecting rib is in contact with the inner wall of the circular hole, and the second rectangular plate and the first rectangular plate are an integrated structure.

[0010] By adopting the above technical solution, the connecting ribs and the inner wall of the circular hole form a surface contact constraint, which effectively restricts the lateral displacement of the composite plate body in the splicing plane. The integrated design of rectangular plate one and rectangular plate two eliminates the joint gap of traditional split structure, directly improves the overall rigidity of the splicing point, and indirectly reduces the risk of deformation accumulation caused by load.

[0011] Furthermore, the first connecting block is fixed to the connecting rib by welding, and the second connecting block is fixed to the connecting rib by welding.

[0012] By adopting the above technical solution, connecting block one and connecting block two are permanently connected by welds and connecting ribs, directly eliminating the risk of loosening at the connection point and indirectly improving the fatigue life of the entire composite plate assembly. The welded metal continuum makes the stress transmission path smoother, and can effectively suppress the propagation of microcracks, especially under repeated loading.

[0013] Furthermore, the surface of the T-shaped plate is provided with multiple sets of recessed holes, and the inner wall of the recessed holes is in contact with the surface of the connecting rib.

[0014] By adopting the above technical solution, the regularly distributed concave holes on the surface of the T-shaped plate form multi-point engagement with the outer wall of the connecting bar, directly increasing the effective contact area between the two and indirectly improving the anti-slip ability of the connection node. The concave hole structure can also accommodate a small amount of construction error, so that the connecting bar can maintain a stable positioning state under different working conditions.

[0015] Furthermore, the connecting block two and the trapezoidal block two are integrated structures, and the corner block and the connecting block two are integrated structures.

[0016] By adopting the above technical solutions, the integrated molding process of connecting block 2 and trapezoidal block 2 eliminates the assembly gap of traditional assembly structures. The integrated design of corner blocks and connecting block 2 makes the corner protection structure a part of the main frame, directly strengthening the impact resistance of the corner area of ​​the composite plate, indirectly shortening the assembly process in the production process, and reducing the complexity of on-site construction.

[0017] Compared with related technologies, the prestressed concrete ribbed composite slab provided by this utility model has the following beneficial effects:

[0018] This utility model provides a prestressed concrete ribbed composite slab. By setting mutually compatible trapezoidal blocks one and two, the composite slab body can be quickly positioned and spliced. The through holes opened on its surface form a longitudinal through channel, allowing the building steel bars to be sequentially inserted into the through holes of adjacent composite slabs. This directly strengthens the overall load-bearing capacity between the trapezoidal blocks and indirectly improves the structural stability of the composite slab assembly. The corner blocks fixed on the surfaces of connecting blocks one and two automatically fit into the corner areas of the composite slab body during the assembly process, forming a physical protective barrier and effectively reducing the probability of corner damage during transportation and installation.

[0019] This utility model provides a prestressed concrete ribbed composite slab. The circular holes on the surface of the rectangular plate form a surface contact fit with the outer wall of the connecting bar. The rectangular plate fixed to the bottom forms an auxiliary support surface. The two work together to keep the composite slab in a balanced posture during hoisting. The hoisting holes adopt a symmetrical layout design to form a three-point stable suspension with the hoisting equipment, directly eliminating the swing risk caused by single-point suspension and indirectly shortening the hoisting operation time. The standardized hole design is compatible with conventional hoisting equipment, and precise positioning can be achieved without the need for customized special clamps. Attached Figure Description

[0020] Figure 1 A structural schematic diagram of a preferred embodiment of a prestressed concrete ribbed composite slab provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model;

[0022] Figure 3 This is a side view of the present invention;

[0023] Figure 4 This is the bottom view of the present invention.

[0024] The diagram is labeled as follows: 1. Splicing component; 101. Composite plate body; 102. Connecting rib; 103. Connecting block one; 104. Trapezoidal block one; 105. Rectangular strip; 106. Trapezoidal block two; 107. Through hole; 108. Connecting block two; 109. Corner block; 110. T-shaped plate; 111. Reinforcing rib; 112. Upper structure; 113. Groove; 114. Concave hole; 2. Lifting component; 201. Rectangular plate one; 202. Rectangular plate two; 203. Rectangular groove; 204. Lifting hole; 205. Round hole. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings show typical embodiments of this utility model.

[0026] Example 1:

[0027] like Figure 1-4As shown, this utility model discloses a prestressed concrete ribbed composite slab, including a splicing assembly 1 and a hoisting assembly 2. The hoisting assembly 2 is installed on the splicing assembly 1. The splicing assembly 1 includes a composite slab body 101, and the interior of the composite slab body 101 is provided with multiple sets of connecting ribs 102. A connecting block 103 is fixed to the left side surface of the connecting rib 102, and multiple sets of trapezoidal blocks 104 are fixed to the side surface of the connecting block 103. A rectangular strip 105 is fixed to the bottom surface of the trapezoidal block 104. A rectangular strip 105 is fixed to the right side surface of the connecting rib 102. Connecting block 2 108, trapezoidal block 2 106 is fixed on the side surface of connecting block 2 108, and through holes 107 are opened on the surface of trapezoidal block 2 106 and trapezoidal block 1 104. Corner blocks 109 are fixed on the surface of connecting block 1 103 and connecting block 2 108. T-shaped plate 110 is fixed on the surface of connecting rib 102, and multiple sets of reinforcing ribs 111 are fixed on the side surface of T-shaped plate 110. Upper structure 112 is fixed on the top surface of composite plate body 101, and multiple sets of grooves 113 are opened on the side surface of upper structure 112.

[0028] like Figure 1-4 As shown, the operator first moves the composite slab body 101 to a suitable work position along a preset position, and then precisely embeds the rectangular plate 201 of another set of composite slab bodies 101 into the trapezoidal block 106 on the side surface of the adjacent composite slab in a sliding fit manner to form a snap-fit ​​structure. At this time, the through holes 107 opened on the surface of trapezoidal block 106 and trapezoidal block 104 are aligned with the axis, which makes it easy for the building steel bars to pass through the through holes 107 to achieve through reinforcement. This design effectively improves the structural strength of trapezoidal block 106 and trapezoidal block 104 and optimizes the actual use effect. At the same time, the corner blocks 109 set on the surface of connecting block 103 and connecting block 108 automatically fit the corners of the composite slab body 101 as the components are assembled, forming an anti-collision protective layer.

[0029] like Figure 1-4 As shown, connecting block 103 is welded to connecting rib 102 to form a fixed structure, and connecting block 2 108 is welded to connecting rib 102 to form a fixed structure.

[0030] like Figure 1-4 As shown, the surface of the T-shaped plate 110 has multiple sets of recesses 114, and the inner wall of the recesses 114 is in contact with the surface of the connecting rib 102.

[0031] like Figure 1-4 As shown, connecting block 2 108 and trapezoidal block 2 106 are integrated structures, and corner block 109 and connecting block 2 108 are integrated structures.

[0032] During implementation, when splicing is required, the composite slab body 101 is first placed in a suitable position. At the same time, the rectangular plate 201 of another set of composite slab bodies 101 is engaged with the trapezoidal block 106 on the side surface of the composite slab body 101. Both trapezoidal block 106 and trapezoidal block 104 have through holes 107 on their surfaces to facilitate the passage of reinforcing bars through the through holes 107, thereby improving the strength of trapezoidal block 106 and trapezoidal block 104 and enhancing the actual use effect. Meanwhile, corner blocks 109 are fixed to the surfaces of connecting block 103 and connecting block 108 to protect the corners of the composite slab body 101 and prevent corner damage.

[0033] Example 2:

[0034] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: the hoisting assembly 2 includes a rectangular plate 201 disposed on the surface of the connecting rib 102, and a rectangular plate 202 is fixed on the bottom surface of the rectangular plate 201. The surface of the rectangular plate 201 is provided with a plurality of rectangular grooves 203, and the surface of the rectangular plate 201 is provided with a plurality of hoisting holes 204 of different diameters, and the surface of the rectangular plate 201 is provided with a plurality of round holes 205.

[0035] like Figure 1-4 As shown, the circular holes 205 on the surface of rectangular plate 1 201 are in close contact with the outer wall of the connecting rib 102 during the splicing process. The rectangular plate 202 fixed at its bottom is connected to the lifting equipment through the lifting hole 204, so that the composite plate body 101 can be raised and lowered smoothly in the vertical direction during the hoisting process, which significantly improves the hoisting stability and construction efficiency.

[0036] like Figure 1-4 As shown, the surface of the connecting rib 102 is in contact with the inner wall of the circular hole 205, and the rectangular plate 202 and the rectangular plate 201 are an integrated structure.

[0037] During implementation, the round hole 205 on the surface of rectangular plate 1 201 contacts the surface of the connecting rib 102, and rectangular plate 202 is fixed to the bottom of rectangular plate 1 201. When hoisting the composite plate body 101 using the lifting hole 204, it is more stable and convenient to hoist.

[0038] The advantages of this technical solution in practical applications include, but are not limited to, the following:

[0039] 1. The interlocking structure of trapezoidal block 104 and trapezoidal block 2 106, combined with the through hole 107, enables the reinforcement to pass through and strengthen the steel bars. The corner block 109 provides full coverage protection for the edges and corners of the composite slab.

[0040] 2. The surface contact between the round hole 205 and the connecting rib 102, combined with the supporting effect of the rectangular plate 202, and the symmetrically distributed lifting holes 204, achieve stable hoisting.

[0041] When splicing is required in this technical solution, the composite slab body 101 is first placed in a suitable position. At the same time, the rectangular plate 201 of another set of composite slab bodies 101 is engaged with the trapezoidal block 106 on the side surface of the composite slab body 101. Both trapezoidal block 106 and trapezoidal block 104 have through holes 107 on their surfaces to facilitate the passage of reinforcing bars through the through holes 107, thereby improving the strength of trapezoidal block 106 and trapezoidal block 104 and enhancing the actual use effect. Meanwhile, corner blocks 109 are fixed to the surfaces of connecting block 103 and connecting block 108 to protect the corners of the composite slab body 101 and prevent corner damage. The round hole 205 on the surface of rectangular plate 201 contacts the surface of the connecting bar 102. At the same time, rectangular plate 202 is fixed to the bottom of rectangular plate 201. When hoisting the composite slab body 101 using the lifting hole 204, it is more stable and convenient for hoisting.

[0042] The above are merely exemplary embodiments of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure.

Claims

1. A prestressed concrete ribbed composite slab, characterized in that: The assembly includes a splicing component (1) and a hoisting component (2). The hoisting component (2) is installed on the splicing component (1). The splicing component (1) includes a composite plate body (101), and the composite plate body (101) has multiple sets of connecting ribs (102) inside. A connecting block (103) is fixed to the left side surface of the connecting rib (102), and multiple sets of trapezoidal blocks (104) are fixed to the side surface of the connecting block (103). A rectangular strip (105) is fixed to the bottom surface of the trapezoidal blocks (104). A connecting block (108) is fixed to the right side surface of the connecting rib (102). A trapezoidal block two (106) is fixed on the side surface of block two (108), and through holes (107) are opened on the surfaces of trapezoidal block two (106) and trapezoidal block one (104). Corner blocks (109) are fixed on the surfaces of connecting block one (103) and connecting block two (108). A T-shaped plate (110) is fixed on the surface of the connecting rib (102), and multiple sets of reinforcing ribs (111) are fixed on the side surface of the T-shaped plate (110). An upper structure (112) is fixed on the top surface of the composite plate body (101), and multiple sets of grooves (113) are opened on the side surface of the upper structure (112).

2. The prestressed concrete ribbed composite slab according to claim 1, characterized in that, The hoisting assembly (2) includes a rectangular plate (201) disposed on the surface of the connecting rib (102), and a rectangular plate (202) is fixed on the bottom surface of the rectangular plate (201). The rectangular plate (201) has multiple sets of rectangular grooves (203) and multiple sets of hoisting holes (204) with different diameters. The rectangular plate (201) also has multiple sets of round holes (205).

3. A prestressed concrete ribbed composite slab according to claim 2, characterized in that, The surface of the connecting rib (102) is in contact with the inner wall of the circular hole (205), and the second rectangular plate (202) and the first rectangular plate (201) are an integrated structure.

4. A prestressed concrete ribbed composite slab according to claim 1, characterized in that, The first connecting block (103) is fixed by welding with the connecting rib (102), and the second connecting block (108) is fixed by welding with the connecting rib (102).

5. A prestressed concrete ribbed composite slab according to claim 1, characterized in that, The surface of the T-shaped plate (110) has multiple sets of recessed holes (114), and the inner wall of the recessed holes (114) is in contact with the surface of the connecting rib (102).

6. A prestressed concrete ribbed composite slab according to claim 1, characterized in that, The connecting block 2 (108) and the trapezoidal block 2 (106) are an integrated structure, and the corner block (109) and the connecting block 2 (108) are an integrated structure.

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