A stable structure for semi-precast floor panels

Abstract

The utility model relates to a kind of stable structure for semi-precast floor slab, and stable structure includes multiple first connecting pieces located at semi-precast floor slab and cast-in-place structure junction and L-shaped, first connecting part extends along left-right direction and is fixedly connected with semi-precast floor slab along up-down direction by first fixing part, second connecting part extends along up-down direction and is fixedly connected with cast-in-place structure along left-right direction by second fixing part.Its beneficial effect is, the stable structure is fixed by L-shaped first connecting piece and its two-way fixed mode, effectively prevent the deviation problem of semi-precast floor slab when concrete pouring.Its first connecting part is vertically fixed with precast slab, provide left and right constraint;Second connecting part is horizontally fixed with cast-in-place structure, provide front and back constraint, form two-way rigid connection.Improve the positioning accuracy and construction efficiency of semi-precast floor slab installation significantly, enhance the connection reliability and structural integrity of semi-precast floor slab and cast-in-place structure.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a stable structure for semi-prefabricated floor slabs. Background Technology

[0002] Semi-precast floor slabs are used in prefabricated buildings. They are formed by pouring concrete to create finished floor slabs. The semi-precast floor slabs are fixed to the vertical cast-in-place structure. Rooms are formed by enclosing two floor slabs and multiple cast-in-place structures. The cast-in-place structure is a wall formed by pouring concrete. The semi-precast floor slab includes a bottom semi-precast slab, a bottom steel mesh, supporting connectors, and a top steel mesh. The bottom steel mesh is set inside the bottom semi-precast slab. One end of the supporting connector is inserted into the bottom semi-precast slab and fixedly connected to the bottom steel mesh. The other end of the supporting connector extends to the outside of the bottom semi-precast slab and is fixedly connected to the top steel mesh. A space is formed between the surface of the top steel mesh and the bottom semi-precast slab for pouring concrete on site.

[0003] In the prior art, during the concrete pouring process of semi-prefabricated floor slabs, the weight of the concrete presses on the edges of the semi-prefabricated floor slabs, causing them to deviate from their intended positions.

[0004] Therefore, there is an urgent need for a stable structure for semi-prefabricated floor panels to prevent them from shifting. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a stable structure for semi-prefabricated floor slabs, which solves the technical problem that existing semi-prefabricated floor slabs are prone to displacement.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model embodiment provides a stabilizing structure for a semi-prefabricated floor slab, wherein the semi-prefabricated floor slab is perpendicularly connected to its adjacent cast-in-place structure. The stabilizing structure includes a plurality of first connectors located at the junction of the semi-prefabricated floor slab and the cast-in-place structure and forming an L-shape. Each first connector has a first connecting portion and a second connecting portion that are perpendicular to each other. The first connecting portion extends in the left-right direction and is fixedly connected to the semi-prefabricated floor slab in the up-down direction by a first fixing member. The second connecting portion extends in the up-down direction and is fixedly connected to the cast-in-place structure in the left-right direction by a second fixing member.

[0010] Optionally, the first connecting part has two perpendicularly connected first straight plates and second straight plates, the upper surface of the first straight plate abutting against the bottom surface of the semi-prefabricated floor slab, and the upper side of the second straight plate abutting against the bottom surface of the semi-prefabricated floor slab; the second connecting part has two perpendicularly connected third straight plates and fourth straight plates, the right side of the third straight plate abutting against the left side of the cast-in-place structure, and the right side of the fourth straight plate abutting against the left side of the cast-in-place structure.

[0011] Optionally, the first straight plate and the third straight plate are connected by welding, and the second straight plate and the fourth straight plate are connected by welding.

[0012] Optionally, each first connector is also fixed with a second connector, one end of which is fixedly connected to the second straight plate and the other end of which is fixedly connected to the fourth straight plate. The first connector and the second connector form a triangle.

[0013] Optionally, the first fastener is an anchor bolt, which can pass through a vertical through hole in the semi-prefabricated floor slab to the top of the floor slab, and the lower surface of the first straight plate is provided with a first nut for engaging with the anchor bolt.

[0014] Optionally, the second fastener is a pre-embedded bolt, which fixes the second connection part to the cast-in-place structure by means of a second nut set on the third straight plate.

[0015] Optionally, a washer is provided between the first nut and the first straight plate, and a washer is provided between the second nut and the third straight plate.

[0016] Optionally, the cast-in-place structure has a groove on the left side for snapping into the semi-prefabricated floor slab, the depth of which is in the range of 150mm-250cm.

[0017] Optionally, a template for supporting the semi-prefabricated floor slab is provided at the lower edge of the semi-prefabricated floor slab, and the width of the template is in the range of 120mm-150mm.

[0018] Alternatively, the semi-prefabricated floor slabs are connected to the cast-in-place structure via a cast-in-place concrete layer.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are as follows: This utility model provides a stabilizing structure for semi-prefabricated floor slabs, where the semi-prefabricated floor slab is vertically connected to an adjacent cast-in-place structure. The stabilizing structure includes multiple L-shaped first connectors located at the junction of the semi-prefabricated floor slab and the cast-in-place structure. Each first connector has a first connecting portion and a second connecting portion perpendicular to each other. The first connecting portion extends in the left-right direction and is fixedly connected to the semi-prefabricated floor slab in the up-down direction via a first fixing member. The second connecting portion extends in the up-down direction and is fixedly connected to the cast-in-place structure in the left-right direction via a second fixing member. Compared with the prior art, this stabilizing structure, through the L-shaped first connectors and its bidirectional fixing method, effectively prevents the semi-prefabricated floor slab from shifting during concrete pouring. The first connecting portion is vertically fixed to the prefabricated slab, providing lateral constraint; the second connecting portion is horizontally fixed to the cast-in-place structure, providing front-back constraint, forming a bidirectional rigid connection. This significantly improves the positioning accuracy and construction efficiency of the semi-prefabricated floor slab installation, and enhances the connection reliability and structural integrity between the semi-prefabricated floor slab and the cast-in-place structure. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view along the line connecting the first and second fasteners of the stabilizing structure for semi-prefabricated floor slabs in Embodiment 1 of this utility model.

[0022] Figure 2 for Figure 1 A schematic diagram of the first fastener in a stabilizing structure for semi-prefabricated floor slabs is shown.

[0023] Figure 3 for Figure 1 A schematic diagram of the second fastener in a stabilizing structure for semi-prefabricated floor slabs is shown.

[0024] Figure 4 for Figure 1 A schematic diagram of the structure of the second connector in the stabilizing structure for semi-prefabricated floor slabs is shown.

[0025] Figure 5 for Figure 1 A schematic diagram of the first connection in a stabilizing structure for semi-prefabricated floor slabs is shown.

[0026] Figure 6 for Figure 1 The diagram shows a structural schematic of the second connection in a stabilizing structure for semi-prefabricated floor slabs.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: First connector; 11: First connecting part; 111: First straight plate; 112: Second straight plate; 12: Second connecting part; 121: Third straight plate; 122: Fourth straight plate; 2: First fixing member; 3: Second fixing member; 4: Second connector; 5: First nut; 6: Second nut; 7: Washer; 8: Groove; 9: Template. Detailed Implementation

[0029] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," "right," "front," and "rear" are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0030] Example 1:

[0031] Reference Figures 1 to 6 This embodiment provides a stabilizing structure for semi-prefabricated floor slabs, which is used to fix the semi-prefabricated floor slabs to their adjacent cast-in-place structures through the stabilizing structure, so as to prevent the semi-prefabricated floor slabs from shifting during the concrete pouring process. Specifically, the stabilizing structure for semi-prefabricated floor slabs in this embodiment includes a plurality of first connecting members 1 located at the junction of the semi-prefabricated floor slabs and the cast-in-place structures and in an L-shape, as detailed below.

[0032] In this embodiment, the first connector 1 has a first connecting part 11 and a second connecting part 12 that are perpendicular to each other. The first connecting part 11 extends in the left-right direction and is fixedly connected to the semi-prefabricated floor panel in the up-down direction through the first fixing part 2. The second connecting part 12 extends in the up-down direction and is fixedly connected to the cast-in-place structure in the left-right direction through the second fixing part 3.

[0033] Specifically, the first connecting part 11 and the second connecting part 12, which are perpendicular to each other, are located at the perpendicular junction of the semi-prefabricated floor slab and the cast-in-place structure. The first connecting part 11 and the second connecting part 12 are connected by welding, screwing or riveting. The first connecting part 11 extends in the left-right direction and is screwed, snapped or welded to the semi-prefabricated floor slab in the up-down direction by the first fastener 2. The second connecting part 12 extends in the up-down direction and is screwed, snapped or welded to the cast-in-place structure in the up-down direction by the second fastener 3.

[0034] In summary, this stable structure, through the L-shaped first connector 1 and its bidirectional fixing method, effectively prevents the misalignment of the semi-prefabricated floor slab during concrete pouring. Its first connecting part 11 is vertically fixed to the prefabricated slab, providing lateral restraint; the second connecting part 12 is horizontally fixed to the cast-in-place structure, providing front-back restraint, forming a bidirectional rigid connection. This significantly improves the positioning accuracy and construction efficiency of the semi-prefabricated floor slab installation, and enhances the reliability of the connection between the semi-prefabricated floor slab and the cast-in-place structure, as well as the overall structural integrity.

[0035] Furthermore, the first connecting part 11 has two perpendicularly connected first straight plates 111 and second straight plates 112. The upper surface of the first straight plate 111 abuts against the bottom surface of the semi-prefabricated floor slab, and the upper side of the second straight plate 112 abuts against the bottom surface of the semi-prefabricated floor slab. The second connecting part 12 has two perpendicularly connected third straight plates 121 and fourth straight plates 122. The right side of the third straight plate 121 abuts against the left side of the cast-in-place structure, and the right side of the fourth straight plate 122 abuts against the left side of the cast-in-place structure.

[0036] Specifically, the first straight plate 111 and the second straight plate 112 are connected by welding, screwing, or riveting, and the first straight plate 111 and the second straight plate 112 are perpendicular to each other. The first straight plate 111 is rectangular and its long side extends in the left and right direction, and its short side is located in the same horizontal plane. The first straight plate 111 abuts against the bottom surface of the semi-prefabricated floor panel and is parallel to the extension direction of the semi-prefabricated floor panel. The second straight plate 112 is rectangular and its long side extends in the left and right direction, and its short side extends in the up and down direction. The upper surface of the second straight plate 112 abuts against the bottom surface of the semi-prefabricated floor panel and is perpendicular to the semi-prefabricated floor panel. The third straight plate 121 and the fourth straight plate 122 are connected by welding, screwing or riveting, and the third straight plate 121 and the fourth straight plate 122 are perpendicular to each other. The third straight plate 121 is rectangular and its long side extends in the vertical direction, and its short side is located in the same vertical plane. The third straight plate 121 abuts against the left side of the cast-in-place structure and is parallel to the extension direction of the cast-in-place structure. The fourth straight plate 122 is rectangular and its long side extends in the vertical direction, and its short side extends in the horizontal direction.

[0037] Furthermore, the first straight plate 111 and the third straight plate 121 are connected by welding, and the second straight plate 112 and the fourth straight plate 122 are connected by welding. The first straight plate 111 and the third straight plate 121 are welded together at their perpendicular joints, and the second straight plate 112 and the fourth straight plate 122 are welded together at their perpendicular joints. Of course, in addition to welding, they can also be integrally formed, or large straight plates can be bent into shape, or finished angle steel can be used directly.

[0038] Furthermore, each first connector 1 is also fixed with a second connector 4. One end of the second connector 4 is fixedly connected to the second straight plate 112, and the other end is fixedly connected to the fourth straight plate 122. The first connector 1 and the second connector 4 form a triangle. The second connector 4 is a sheet-like connecting piece that extends upward along the inclined direction. The second connector 4 can also be a reinforcing bar or a flat angle bracket. Therefore, the second connector 4 is connected to the first connecting part 11 and the second connecting part 12 in the first connector 1 by welding, screwing, or snapping. The first straight plate 111 is connected to the semi-prefabricated floor slab, the second straight plate 112 is connected to one end of the second connector 4, the third straight plate 121 is connected to the cast-in-place structure, and the fourth straight plate 122 is connected to the other end of the second connector 4, forming a stable triangular structure. The strong connection between the second connector 4 and the semi-prefabricated floor slab and the cast-in-place structure can enhance the stability of the fixed structure.

[0039] Furthermore, the first fixing element 2 is an anchor bolt, which can pass through the vertical through hole opened in the semi-prefabricated floor slab to the top of the floor slab. The lower surface of the first straight plate 111 is provided with a first nut 5 for screwing with the anchor bolt. The first straight plate 111 is fixed by multiple anchor bolts, and the through hole on the first straight plate 111 is elliptical, which allows for more suitable locations to be selected for fixing on the semi-prefabricated floor slab.

[0040] Furthermore, the second fixing member 3 is a pre-embedded bolt, which fixes the second connecting part 12 to the cast-in-place structure through the second nut 6 set on the third straight plate 121. Since the pre-embedded bolt is pre-embedded in the cast-in-place structure, and because the pre-embedded bolt is affected by the poured concrete or the pre-embedded position, the third straight plate 121 has an elliptical through hole to facilitate the passage of the pre-embedded bolt that has been affected and deviated from its normal position through the third straight plate 121.

[0041] Furthermore, a washer 7 is provided between the first nut 5 and the first straight plate 111, and a washer 7 is also provided between the second nut 6 and the third straight plate 121. Since the through holes on the first straight plate 111 and the third straight plate 121 are elliptical, the washer 7 increases the contact area between the first nut 5 and the first straight plate 111, and between the second nut 6 and the third straight plate 121, thus dispersing the pressure on the first straight plate 111 and the third straight plate 121.

[0042] Furthermore, the cast-in-place structure has a groove 8 on the left side for engaging semi-prefabricated floor slabs. The depth of the groove 8 is in the range of 150mm-250cm. The cast-in-place structure has a groove 8 for engaging semi-prefabricated floor slabs. The height of the groove 8 is greater than the thickness of the semi-prefabricated floor slab. The semi-prefabricated floor slabs are engaged into the groove 8 to fix them in place.

[0043] Furthermore, a template 9 for supporting the semi-prefabricated floor slab is provided at the lower edge of the semi-prefabricated floor slab. The width of the template 9 is in the range of 120mm-150mm. The template 9 is provided around the bottom of the semi-prefabricated floor slab. The outer perimeter of the template 9 abuts against the cast-in-place structure. A support rod (not shown in the figure) is provided below the template 9. The support rod is used to support the template 9 and the semi-prefabricated floor slab, and at the same time improve the supporting force of the semi-prefabricated floor slab when pouring cast-in-place concrete.

[0044] Furthermore, the semi-prefabricated floor slabs are connected to the cast-in-place structure via a layer of cast-in-place concrete. The semi-prefabricated floor slabs are cast into finished floor slabs using cast-in-place concrete, forming an integral whole with the cast-in-place structure through the adhesive strength of the concrete itself.

[0045] Example 2:

[0046] The difference between this embodiment and embodiment 1 is that the positions of the first fixing member and the second fixing member 3 are limited, as detailed below.

[0047] In this embodiment, the distance between the first fastener 2 and the cast-in-place structure in the left-right direction is within the range of 150mm-200mm, and the distance between the second fastener 3 and the semi-precast floor slab in the vertical direction is within the range of 280mm-330mm. By limiting the positions of the first fastener 2 and the second fastener 3, sufficient fixing effect is ensured while saving some materials.

[0048] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0050] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A stabilizing structure for semi-precast floor slabs, wherein the semi-precast floor slabs are perpendicularly connected to adjacent cast-in-place structures, characterized in that: The stabilizing structure includes a plurality of L-shaped first connectors (1) located at the junction of the semi-prefabricated floor slab and the cast-in-place structure. Each first connector (1) has a first connecting portion (11) and a second connecting portion (12) that are perpendicular to each other. The first connecting portion (11) extends in the left-right direction and is fixedly connected to the semi-prefabricated floor slab in the up-down direction by a first fixing member (2). The second connecting portion (12) extends in the up-down direction and is fixedly connected to the cast-in-place structure in the left-right direction by a second fixing member (3).

2. The stabilizing structure for semi-prefabricated floor slabs as described in claim 1, characterized in that: The first connecting part (11) has two perpendicularly connected first straight plates (111) and second straight plates (112). The upper surface of the first straight plate (111) abuts against the bottom surface of the semi-prefabricated floor panel, and the upper side of the second straight plate (112) abuts against the bottom surface of the semi-prefabricated floor panel. The second connecting part (12) has two perpendicularly connected third straight plates (121) and fourth straight plates (122). The right side of the third straight plate (121) abuts against the left side of the cast-in-place structure, and the right side of the fourth straight plate (122) abuts against the left side of the cast-in-place structure.

3. The stabilizing structure for semi-prefabricated floor slabs as described in claim 2, characterized in that: The first straight plate (111) and the third straight plate (121) are connected by welding, and the second straight plate (112) and the fourth straight plate (122) are connected by welding.

4. The stabilizing structure for semi-prefabricated floor slabs as described in claim 2, characterized in that: Each of the first connectors (1) is also fixed with a second connector (4). One end of the second connector (4) is fixedly connected to the second straight plate (112), and the other end is fixedly connected to the fourth straight plate (122). The first connector (1) and the second connector (4) form a triangle.

5. The stabilizing structure for semi-prefabricated floor slabs as described in claim 2, characterized in that: The first fastener (2) is an anchor bolt, which can pass through the vertical through hole opened on the semi-prefabricated floor slab to the top of the floor slab. The lower surface of the first straight plate (111) is provided with a first nut (5) for engaging with the anchor bolt.

6. The stabilizing structure for semi-prefabricated floor slabs as described in claim 2, characterized in that: The second fastener (3) is a pre-embedded bolt, which fixes the second connecting part (12) to the cast-in-place structure by means of the second nut (6) set on the third straight plate (121).

7. The robust structure for semi-prefabricated floor slabs as described in any one of claims 5 and 6, characterized in that: A washer (7) is provided between the first nut (5) and the first straight plate (111), and a washer (7) is provided between the second nut (6) and the third straight plate (121).

8. The stabilizing structure for semi-prefabricated floor slabs as described in claim 1, characterized in that: The cast-in-place structure has a groove (8) on the left side for engaging the semi-prefabricated floor slab, and the depth of the groove (8) is in the range of 150mm-250cm.

9. The stabilizing structure for semi-prefabricated floor slabs as described in claim 1, characterized in that: The lower surface edge of the semi-prefabricated floor panel is also provided with a template (9) for supporting the semi-prefabricated floor panel, and the width of the template (9) is in the range of 120mm-150mm.

10. The stabilizing structure for semi-prefabricated floor slabs as described in claim 1, characterized in that: The semi-prefabricated floor slab is connected to the cast-in-place structure via a cast-in-place concrete layer.

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