A reinforced prestressed concrete composite slab

Abstract

This utility model relates to the field of concrete composite slab technology and discloses a reinforced prestressed concrete composite slab, including a composite slab and a prepositioning component including a prepositioning ring A. Side supports A and B are installed on one side of the outer surface of the prepositioning ring A. A semi-circular frame is installed at the bottom end of the side supports A and B. A positioning plate is installed on both sides of the bottom end of the semi-circular frame. There are two sets of side supports A and B. Since the installation direction of the upper frame component is opposite to the installation direction of the prepositioning component, and the installation positions of the upper frame component and the prepositioning component are also opposite, the reinforcing bars are inserted into the interior of the prepositioning ring A and the prepositioning ring B respectively. The reinforcing bars are intertwined and the intersection of the reinforcing bars is bound by steel wire. When the top of the concrete is poured, the reinforcing bars inside the prepositioning ring A and the prepositioning ring B will increase the prestress of the composite slab when the top of the poured layer is under stress.

Description

Technical Field

[0001] This utility model relates to the field of concrete composite slab technology, specifically a reinforced prestressed concrete composite slab. Background Technology

[0002] Composite concrete slabs are a common building material, consisting of precast slabs and cast-in-place reinforced concrete layers stacked together to form a prefabricated monolithic floor slab. Composite slabs offer good overall integrity, with smooth upper and lower surfaces that facilitate finishing. They are primarily used for floors, roofs, and other load-bearing structures. The slabs are prefabricated in a factory or on-site and then transported to the construction site for installation.

[0003] For example, a precast bidirectional prestressed concrete composite slab with publication number CN221399536U includes a precast base slab. Several X-axis reinforcing bars are equidistantly inserted at one end of the precast base slab. Through slots are provided on both sides of the top of the precast base slab. Connecting skeletons are provided at both ends of the X-axis reinforcing bars. Several Y-axis reinforcing bars are equidistantly inserted on one side of the precast base slab. Triangular reinforcing bars are sleeved on the surface of the middle Y-axis reinforcing bars. A protrusion is provided in the middle of the top of the precast base slab. Reinforcing bars are provided on both sides inside the protrusion. The surfaces of the two reinforcing bars are in contact with the two ends of the top of the inner cavity of the triangular reinforcing bars. By inserting horizontal reinforcing bars into the inner cavity of the through slots and connecting the two ends of the horizontal reinforcing bars to the top of the connecting skeletons through steel wires, the Y-axis reinforcing bars, X-axis reinforcing bars, connecting skeletons, through slots and horizontal reinforcing bars are connected into a whole, thereby strengthening the integrity and structural integrity of the composite slab.

[0004] The aforementioned patent proposes that by inserting horizontal reinforcing bars into the inner cavity of the insert sleeve and connecting the two ends of the horizontal reinforcing bars to the top of the connecting frame with steel wires, the Y-axis reinforcing bars, X-axis reinforcing bars, connecting frame, insert sleeve and horizontal reinforcing bars are connected into a whole, which strengthens the integrity and structure of the composite slab. However, in actual use, when the concrete composite slab is under stress, the middle part of the concrete composite slab is the position with the largest bending moment and the most obvious deformation, which is prone to concrete cracking and affects the use effect of the concrete composite slab. Utility Model Content

[0005] The purpose of this invention is to provide a reinforced prestressed concrete composite slab to solve the problem mentioned in the background art that the middle part of the concrete composite slab is the position with the largest bending moment and the most obvious deformation, which easily leads to concrete cracking.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a reinforced prestressed concrete composite slab, comprising a composite slab, wherein the composite slab includes a precast base plate and an embedded frame installed inside the top of the precast base plate, and a prepositioning component and an upper frame component are installed on the top of the precast base plate; The prepositioning component includes a prepositioning ring A. Side support A and side support B are installed on one side of the outer surface of the prepositioning ring A. A semi-circular frame is installed at the bottom end of the side support A and side support B. A positioning plate is installed on both sides of the bottom end of the semi-circular frame. There are two sets of side support A and side support B.

[0007] Preferably, an insertion rod is inserted inside the pre-embedded frame, and a positioning block A is installed at the top of the insertion rod.

[0008] Preferably, the semi-circular frame and the positioning plate are fitted with internal reinforcing bars, and the top of the precast base plate is poured with concrete.

[0009] Preferably, a positioning block B is also installed at the top of the insertion rod, and an upper frame component is inserted at the top of the positioning block B.

[0010] Preferably, the upper structure component includes a prepositioning ring B and a bottom block installed at the bottom end of the prepositioning ring B.

[0011] Preferably, a positioning frame is installed at the bottom of the bottom block, and the top area of ​​the positioning frame is larger than the bottom area of ​​the bottom block.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model discloses a reinforced prestressed concrete composite slab, in which a precast base plate has an embedded frame at its top. Structural adhesive can be poured into the embedded frame, and positioning blocks A and B are fixed to the top of the precast base plate using the structural adhesive. Positioning blocks A and B respectively restrict the position of the precast components and the upper frame components, preventing liquid concrete from affecting the arrangement of the precast components and the upper frame components, reducing the adjustment time of the precast components and the upper frame components, and speeding up the production time of the composite slab.

[0013] 2. The present invention discloses a reinforced prestressed concrete composite slab. Since the installation direction of the upper frame component is opposite to that of the prepositioning component, and the installation positions of the upper frame component and the prepositioning component are also opposite, the reinforcing bars are inserted into the prepositioning ring A and the prepositioning ring B respectively. The reinforcing bars are intertwined and the intersections of the reinforcing bars are bound with steel wires. When the top of the concrete is poured, the reinforcing bars inside the prepositioning ring A and the prepositioning ring B will increase the prestress of the composite slab when the top of the poured layer is under stress. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4This is a three-dimensional structural diagram of the upper frame component of this utility model.

[0015] In the diagram: 1. Composite slab; 11. Precast base slab; 111. Embedded frame; 112. Positioning block A; 113. Insertion rod; 114. Positioning block B; 12. Concrete; 13. Internal reinforcing steel; 14. Prepositioning component; 141. Prepositioning ring A; 142. Side support A; 143. Side support B; 144. Semi-circular frame; 145. Positioning plate; 15. Upper frame component; 151. Prepositioning ring B; 152. Bottom block; 153. Positioning bottom frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1: Please refer to Figures 1-3 A reinforced prestressed concrete composite slab includes a composite slab 1, which includes a precast base slab 11 and an embedded frame 111 installed inside the top of the precast base slab 11. A prepositioning component 14 and an upper frame component 15 are installed on the top of the precast base slab 11.

[0018] The prepositioning component 14 includes a prepositioning ring A141. A side support bar A142 and a side support bar B143 are installed on one side of the outer surface of the prepositioning ring A141. A semi-arc frame 144 is installed at the bottom end of the side support bar A142 and the side support bar B143. A positioning plate 145 is installed on both sides of the bottom end of the semi-arc frame 144. There are two sets of side support bars A142 and the side support bar B143.

[0019] An insertion rod 113 is inserted inside the pre-embedded frame 111. A positioning block A112 is installed at the top of the insertion rod 113. The positioning block A112 is located between the positioning plates 145, which facilitates the use of the positioning block A112 to restrict the position of the pre-positioned component 14.

[0020] The semi-circular frame 144 and the positioning plate 145 are fitted with internal steel bars 13, and the top of the precast base plate 11 is filled with concrete 12. The concrete 12 is poured at the lower end of the prepositioning ring A141.

[0021] The top of the insertion rod 113 is also equipped with a positioning block B114. The top of the positioning block B114 is fitted with an upper frame member 15. The upper frame member 15 is located between the prepositioning members 14, and the positions of the upper frame member 15 and the prepositioning members 14 are offset.

[0022] The upper frame component 15 includes a prepositioning ring B151 and a bottom block 152 installed at the bottom of the prepositioning ring B151. The bottom block 152 is platform-shaped, which facilitates the dispersion of the force applied to the top of the prepositioning ring B151. The prepositioning ring B151 is located at the top of the prepositioning ring A141.

[0023] A positioning frame 153 is installed at the bottom of the bottom block 152. The top area of ​​the positioning frame 153 is larger than the bottom area of ​​the bottom block 152. The bottom interior of the positioning frame 153 is adapted to the positioning block B114.

[0024] In this embodiment: a pre-embedded frame 111 is embedded in the top of the precast base plate 11. Structural adhesive can be poured into the interior of the pre-embedded frame 111. The insertion rods 113 at the bottom of the positioning blocks A112 and B114 are inserted into the interior of the pre-embedded frame 111. The positioning blocks A112 and B114 are fixed to the top of the precast base plate 11 using structural adhesive. Multiple sets of positioning blocks A112 are installed in four rows on the top of the precast base plate 11, with the middle two rows being closer together. The semi-circular frames 111 on both sides of the lower end of the pre-positioning ring A141 are installed. 44 and the positioning plate 145 are inserted into the outside of the positioning block A112, and a row of prepositioning rings A141 are aligned. The positioning bottom frame 153 is connected to the top of the positioning block B114. When the concrete 12 is poured, the positioning blocks A112 and B114 restrict the position of the prepositioning component 14 and the upper frame component 15 respectively, so as to avoid the liquid concrete 12 from affecting the arrangement of the prepositioning component 14 and the upper frame component 15, reduce the adjustment time of the prepositioning component 14 and the upper frame component 15, and speed up the production time of the composite plate 1.

[0025] Example 2: This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 2-4 The prepositioning member 14 is provided in multiple sets, and the multiple sets of prepositioning members 14 are aligned. The prepositioning member 14 is triangular in shape, which facilitates the dispersion of the force at the top of the composite plate 1.

[0026] In this embodiment: Since the installation direction of the upper frame component 15 is opposite to that of the prepositioning component 14, and the installation positions of the upper frame component 15 and the prepositioning component 14 are also opposite, the installation height of the prepositioning ring B151 is higher than that of the prepositioning ring A141. Multiple sets of reinforcing bars are inserted into the interior of the prepositioning ring A141 and the prepositioning ring B151 respectively. The reinforcing bars are intertwined and the intersections of the reinforcing bars are bound with steel wires. When the top of the concrete 12 is poured, the reinforcing bars inside the prepositioning ring A141 and the prepositioning ring B151 will increase the prestress of the composite slab 1 when the top of the poured layer is under stress. Since the two rows of prepositioning components 14 at the middle position are close to each other, that is, the installed reinforcing bars are close to each other, the prestress at the middle position of the composite slab 1 will be increased, thereby reducing or eliminating the occurrence of cracks.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reinforced prestressed concrete composite slab comprising a composite slab (1), characterized in that: The composite slab (1) includes a precast base plate (11) and a pre-embedded frame (111) embedded in the top of the precast base plate (11). The top of the precast base plate (11) is equipped with a prepositioning component (14) and an upper structure component (15). The prepositioning component (14) includes a prepositioning ring A (141). A side support A (142) and a side support B (143) are installed on one side of the outer surface of the prepositioning ring A (141). A semi-arc frame (144) is installed at the bottom end of the side support A (142) and the side support B (143). A positioning plate (145) is installed on both sides of the bottom end of the semi-arc frame (144). The side support A (142) and the side support B (143) are provided in two sets.

2. The reinforced prestressed concrete composite slab according to claim 1, characterized in that: An insertion rod (113) is inserted inside the pre-embedded frame (111), and a positioning block A (112) is installed at the top of the insertion rod (113).

3. The reinforced prestressed concrete composite slab according to claim 1, characterized in that: The semi-circular frame (144) and the positioning plate (145) are fitted with internal steel bars (13), and the top of the precast base plate (11) is filled with concrete (12).

4. A reinforced prestressed concrete composite slab according to claim 2, characterized in that: The top of the insertion rod (113) is also equipped with a positioning block B (114), and the top of the positioning block B (114) is fitted with an upper frame component (15).

5. A reinforced prestressed concrete composite slab according to claim 4, characterized in that: The upper structure component (15) includes a prepositioning ring B (151) and a bottom block (152) installed at the bottom end of the prepositioning ring B (151).

6. A reinforced prestressed concrete composite slab according to claim 5, characterized in that: The bottom of the bottom block (152) is equipped with a positioning bottom frame (153), and the top area of ​​the positioning bottom frame (153) is larger than the bottom area of ​​the bottom block (152).

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