Outer layer protection type recycled concrete prestressed laminated slab

Abstract

The utility model relates to the technical field of assembly type buildings, and discloses an outer layer protection type recycled concrete prestress laminated slab which comprises a positioning bottom plate, lower threaded holes are formed in the two sides of the positioning bottom plate, and lower bolts, side positioning plates, connecting columns and reinforcing pieces penetrate through internal threads of the lower threaded holes. The prestressed laminated slab is reasonable in structure, the side reinforcing ribs and the gull-shaped plates are positioned through the connecting columns, the installation time of workers is shortened, meanwhile, the side reinforcing ribs and the gull-shaped plates are evenly positioned, the situation that the prestressed laminated slab deforms due to external force when in use under the condition that the distances are not coordinated is avoided, and the service life of the prestressed laminated slab is prolonged. The middle of the gull-shaped plate is blocked by the main filling plate, deformation and distortion cannot be conducted to the position of the side reinforcing rib on the other side of the gull-shaped plate, after the reinforcing part is covered with the foam concrete, the reinforcing part forms an anchor nail form, the foam concrete is connected with the positioning bottom plate, and the positioning bottom plate is fixed to the gull-shaped plate. And the risk that the whole foam concrete falls off during layered pouring is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to an outer protective type recycled concrete prestressed composite board. Background Art

[0002] Composite slab is a better structural form that combines prefabrication and cast-in-place concrete. The prestressed thin plate is combined with the upper cast-in-place concrete layer to form a whole and work together. The prestressed thin plate is used as the bottom formwork of the cast-in-place concrete layer, and no additional formwork support is required; the composite slab has the integrity of the cast-in-place floor slab, high rigidity, good crack resistance, no increase in steel consumption, and saves formwork. Therefore, in the development of the use of floor slabs in my country, composite slabs are in a period of vigorous development.

[0003] A prestressed composite slab disclosed in the Chinese utility model patent application disclosure CN219569308U has transverse ribs fixedly connected to a concrete precast base plate with prestressed steel wires embedded inside, and a number of external longitudinal steel bars are arranged and fixed on the transverse ribs, so as to make full use of the compressive strength of the concrete precast base plate and the tensile strength of the external longitudinal steel bars, making it a prestressed component with small deflection and higher rigidity, which can be well applied to the construction of prefabricated floor slabs with large spans. The filling concrete is also different according to different use environments. At present, for better environmental protection and saving, recycled concrete is used to make prestressed composite slabs. However, traditional prestressed composite slabs cannot differentiate the internal stress well. For example, when the internal steel wires are deformed when used in some areas with earthquakes or high external pressure, the overall structure will have a deformed plate, causing concrete cracking and a decrease in overall rigidity. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides an outer protective recycled concrete prestressed composite slab, which solves the problem that the internal stress cannot be differentiated well. For example, when an earthquake occurs in certain areas or the external pressure is large, the internal steel wire will be deformed, the overall structure will be deformed, causing concrete cracking and a decrease in overall rigidity.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an outer protective recycled concrete prestressed composite plate, including a positioning base plate, lower threaded holes are opened on both sides of the positioning base plate, the internal threads of the lower threaded holes are penetrated by lower bolts, the positioning base plate has side positioning plates penetrated by the lower bolt threads, a connecting column is inserted into the interior of the positioning base plate, a reinforcement is provided on the upper part of the connecting column, a side reinforcing rib is sleeved on the surface of the connecting column, the internal threads of the side reinforcing rib are penetrated by connecting bolts, the side reinforcing rib is penetrated by a gull-shaped plate through the connecting bolt threads, a main filling plate is provided on the upper surface of the gull-shaped plate, the upper threads of the side positioning plate are penetrated by upper bolts, the upper part of the positioning base plate is filled with recycled concrete, and the interior of the main filling plate is filled with high-strength concrete.

[0008] Optionally, a groove is provided on the surface of the reinforcement, and the reinforcement is located on the upper surface of the gull-shaped plate.

[0009] Optionally, a plurality of filling holes are provided on the surface of the main filling plate, a plurality of gull-shaped plates with equal distances are provided on the lower surface of the main filling plate, and the positions of the filling holes are consistent with the spacing positions of the gull-shaped plates.

[0010] Optionally, four connecting bolts are provided on both sides of the gull-shaped plate, and two side reinforcing ribs are connected to both sides of the gull-shaped plate through the connecting bolts.

[0011] Optionally, the side positioning plates are located on both sides of the positioning base plate, and a top plate is penetrated by an upper bolt thread. Two reinforcing steel bars are arranged inside the side positioning plates, and the distance between the middle parts of the two top plates is consistent with the width of the main filling plate.

[0012] Optionally, the main filling plate is located lower than the side reinforcing ribs provided on both sides, and the middle portion of the positioning bottom plate is in an inverted trapezoidal shape, which is compatible with the main filling plate.

[0013] Optionally, the interior of the top plate is filled with foamed concrete, and the foamed concrete needs to cover the upper part of the dried high-strength concrete, and the strength grade of the high-strength concrete needs to be C60 or above.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] 1. The utility model has a reasonable structure. The side reinforcement ribs and the gull-shaped plate are positioned by connecting columns and connected by fixing bolts, which reduces the installation time of workers. At the same time, the side reinforcement ribs and the gull-shaped plate are evenly positioned, avoiding the deformation of the prestressed composite plate due to external force during use due to inconsistent spacing. The main filling plate is used in the middle part of the gull-shaped plate for blocking. If deformation and distortion occur, it will not be transmitted to the side reinforcement rib position on the other side of the gull-shaped plate, avoiding the large-area deformation of the prestressed composite plate when used for a long time, resulting in concrete cracking.

[0016] 2. In the utility model, after the reinforcement is covered with foam concrete, the reinforcement is formed into an anchor form to connect the foam concrete to the positioning base plate, thereby avoiding the risk of the foam concrete falling off as a whole during layered pouring. The structure has the integrity of a cast-in-place floor slab, and the main steel bars used are only two reinforcing steel bars inside the side positioning plate. While not increasing the consumption of steel bars, deformation of the side is also prevented.

[0017] 3. In the present invention, by connecting the columns and the reinforcements, when the positioning base plate is deformed by external pressure, the connecting columns and the reinforcements will also be pulled to deform, and the gull-shaped plate absorbs the stress and transmits it to the side reinforcement ribs and the main filling plate, thereby dispersing the stress and increasing the protective effect of the outer layer against extrusion deformation. High-strength concrete is used for filling in the main filling plate, so that the overall concrete form of the structure is divided into an outer layer and an inner layer, increasing the overall support strength and avoiding the complete fragmentation of the wall caused by earthquakes and other situations and the loss of support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the planar structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the main filling plate and reinforcement structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the high-strength concrete and recycled concrete filling of the utility model;

[0022] Figure 5 This is a schematic diagram of the positioning base structure of the utility model.

[0023] In the figure: 1. Positioning base plate; 2. Lower bolts; 3. Side positioning plate; 4. Connecting column; 5. Reinforcement; 6. Side reinforcement ribs; 7. Connecting bolts; 8. Gull-shaped plate; 9. Main filling plate; 10. Upper bolts; 11. Recycled concrete; 12. High-strength concrete; 13. Filling hole; 14. Top plate; 15. Foam concrete. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] As a preferred implementation method in this embodiment: Figure 1-Figure 5 The outer protective recycled concrete prestressed composite slab shown in the figure comprises a positioning base plate 1, lower threaded holes are provided on both sides of the positioning base plate 1, lower bolts 2 are penetrated through the internal threads of the lower threaded holes, side positioning plates 3 are threadedly penetrated through the positioning base plate 1 through the lower bolts 2, a connecting column 4 is inserted into the interior of the positioning base plate 1, a reinforcing member 5 is provided on the upper part of the connecting column 4, a groove is provided on the surface of the reinforcing member 5, the reinforcing member 5 is located on the upper surface of the gull-shaped plate 8, a side reinforcing rib 6 is sleeved on the surface of the connecting column 4, a connecting bolt 7 is penetrated through the internal threads of the side reinforcing rib 6, the side reinforcing rib 6 is threadedly penetrated through the gull-shaped plate 8 through the connecting bolt 7, a main filling plate 9 is provided on the upper surface of the gull-shaped plate 8, a plurality of filling holes 13 are provided on the surface of the main filling plate 9, a plurality of gull-shaped plates 8 with equal distances are provided on the lower surface of the main filling plate 9, the position of the filling holes 13 is consistent with the spacing position size of the gull-shaped plates 8, an upper bolt 10 is penetrated through the upper thread of the side positioning plate 3, and the upper part of the positioning base plate 1 is filled with recycled concrete 11, The interior of the main filling plate 9 is filled with high-strength concrete 12, and the interior of the top plate 14 is filled with foamed concrete 15. The foamed concrete 15 needs to cover the upper part of the dried high-strength concrete 12. The strength grade of the high-strength concrete 12 needs to be C60 or above. When making the prestressed composite plate, the side reinforcement 6 and the gull-shaped plate 8 are positioned by the connecting column 4 and connected by the fixing bolts 7 to reduce the installation time of the workers. At the same time, the side reinforcement 6 and the gull-shaped plate are evenly positioned to avoid the deformation of the prestressed composite plate due to external force during use due to the uncoordinated spacing. Because the middle position of the gull-shaped plate 8 is relatively low, if the side reinforcement 6 on both sides are deformed, the gull-shaped plate 8 will be squeezed and twisted. However, the main filling plate 9 is used in the middle part to block the deformation and twisting. The deformation and twisting will not be transmitted to the side reinforcement 6 on the other side of the gull-shaped plate 8, thus avoiding the large-area deformation of the prestressed composite plate when it is used for a long time, which leads to concrete cracking.

[0026] like Figure 2 and Figure 4As shown, in this embodiment, the side positioning plates 3 are located on both sides of the positioning base plate 1, and a top plate 14 is threaded through the upper bolt 10. Two reinforcing steel bars are arranged inside the side positioning plates 3. The middle distance between the two top plates 14 is consistent with the width of the main filling plate 9. The upper part of the positioning base plate 1 is filled with recycled concrete 11, and the interior of the main filling plate 9 is filled with high-strength concrete 12. A plurality of filling holes 13 are opened on the surface of the main filling plate 9, and a plurality of gull-shaped plates 8 with equal distances are arranged on the lower surface of the main filling plate 9. The position of the filling holes 13 is consistent with the spacing position size of the gull-shaped plates 8. The side positioning plates 3 are located on both sides of the positioning base plate 1, and a top plate 14 is threaded through the upper bolt 10. Two reinforcing steel bars are arranged inside the side positioning plates 3. The middle distance between the two top plates 14 is consistent with the width of the main filling plate 9. The upper part of the positioning base plate 1 is filled with recycled concrete 11, and the interior of the main filling plate 9 is filled with high-strength concrete 12. A plurality of filling holes 13 are opened on the surface of the main filling plate 9, and a plurality of gull-shaped plates 8 with equal distances are arranged on the lower surface of the main filling plate 9. The position of the filling holes 13 is consistent with the spacing position size of the gull-shaped plates 8. The groove runs through the top plate 14, and two reinforcing steel bars are arranged inside the side positioning plate 3. The middle distance between the two top plates 14 is consistent with the width of the main filling plate 9. The main filling plate 9 is located lower than the side reinforcing ribs 6 arranged on both sides. The middle part of the positioning bottom plate 1 is inverted trapezoidal, which is adapted to the main filling plate 9. When filling the recycled concrete 11, the first filling of the inside of the positioning bottom plate 1 is required through the filling hole 13 opened in the main filling plate 9. When filling, a vibrator can be used to connect with the reinforcing steel bars to increase the compactness during filling. After the recycled concrete 11 is filled, the main filling plate 9 is filled with high-strength concrete 12, and the reinforcement 5 can be hammered after filling. , further exhaust the concrete, and after it is completely dry, install the top plate 14 through the upper bolts 10, and pour the foam concrete 15 from the middle spacing. The prestressed composite slab here is used for the surrounding walls. If it is necessary to put it underground for sinking well splicing and installation, the foam concrete 15 should be replaced by recycled concrete 11 to increase its airtightness. After the foam concrete 15 covers the reinforcement 5, the reinforcement 5 forms an anchor nail form to connect the foam concrete to the positioning bottom plate, avoiding the risk of the foam concrete 11 falling off as a whole during layered pouring. This structure has the integrity of a cast-in-place floor slab, and the main steel bars used are only the inner side positioning plate 3. The two reinforcing steel bars in the part do not increase the consumption of steel bars, and also prevent the deformation that may occur on the side. At the same time, when the positioning base plate 1 is deformed by external pressure, the connecting column 4 and the reinforcement 5 will also be pulled to deform, but the stress will be absorbed by the gull-shaped plate 8 connected to its surface and transmitted to the side reinforcing ribs 6 and the main filling plate 9, thereby dispersing the stress and increasing the protective effect of the outer layer against extrusion deformation. At the same time, high-strength concrete 12 is used for filling in the main filling plate 9, so that the overall concrete form of the structure is divided into an outer layer and an inner layer, thereby increasing the overall support strength and avoiding the complete fragmentation of the wall and loss of support effect caused by earthquakes and other situations.

[0027] How this utility works:

[0028] When making prestressed composite slabs, the side reinforcement 6 and the gull-shaped plate 8 are positioned by connecting columns 4 and connected by fixing bolts 7, which reduces the installation time of workers and evenly positions the side reinforcement 6 and the gull-shaped plate, avoiding the deformation of the prestressed composite slab due to external force during use due to inconsistent spacing. Since the middle position of the gull-shaped plate 8 is relatively low, if the side reinforcement 6 on both sides are deformed, the gull-shaped plate 8 will be squeezed and twisted, but the main filling plate 9 is used in the middle to block the deformation and twisting, and the deformation and twisting will not be transmitted to the side reinforcement 6 on the other side of the gull-shaped plate 8, avoiding the large-area deformation of the prestressed composite slab during long-term use, which leads to concrete cracking. When filling the recycled concrete 11, the first filling of the interior of the positioning base plate 1 needs to be carried out through the filling hole 13 opened in the main filling plate 9. When filling, a vibrator can be used to connect with the reinforcing steel bars to increase The compactness during filling, after the recycled concrete 11 is filled, the main filling plate 9 is filled with high-strength concrete 12, and the reinforcements can be hammered after filling to further exhaust the concrete. After it is completely dry, the top plate 14 is installed by the upper bolts 10, and the foam concrete 15 is poured from the middle spacing. The prestressed composite slab here is used for the surrounding walls. If it is necessary to put it underground for splicing and installation in the sinking well, the foam concrete 15 should be replaced by recycled concrete 11 to increase its airtightness. After the foam concrete 15 covers the reinforcement 5, the reinforcement 5 is formed into an anchor form to connect the foam concrete to the positioning base plate, avoiding the risk of the foam concrete 11 falling off as a whole during layered pouring. The structure has the integrity of a cast-in-place floor slab, and the main steel bars used are only the two reinforcing steel bars inside the side positioning plate 3. While not increasing the consumption of steel bars, deformation of the side is also prevented.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An outer protective recycled concrete prestressed composite slab, comprising a positioning base plate (1), characterized in that: The positioning base plate (1) is provided with lower threaded holes on both sides, and the lower threaded holes are threaded with lower bolts (2). The positioning base plate (1) is threaded with side positioning plates (3) through the lower bolts (2). A connecting column (4) is inserted into the interior of the positioning base plate (1), and a reinforcing member (5) is provided on the upper part of the connecting column (4). A side reinforcing rib (6) is sleeved on the surface of the connecting column (4), and a connecting bolt (7) is threaded through the internal thread of the side reinforcing rib (6). A gull-shaped plate (8) is threadedly penetrated through the side reinforcing rib (6) through the connecting bolt (7). A main filling plate (9) is provided on the upper surface of the gull-shaped plate (8), and an upper bolt (10) is threaded through the upper part of the side positioning plate (3). The upper part of the positioning base plate (1) is filled with recycled concrete (11), and the interior of the main filling plate (9) is filled with high-strength concrete (12).

2. The outer layer protective recycled concrete prestressed composite slab according to claim 1, characterized in that: A groove is provided on the surface of the reinforcing member (5), and the reinforcing member (5) is located on the upper surface of the gull-shaped plate (8).

3. The outer layer protective recycled concrete prestressed composite slab according to claim 1, characterized in that: The surface of the main filling plate (9) is provided with a plurality of filling holes (13), and the lower surface of the main filling plate (9) is provided with a plurality of gull-shaped plates (8) at equal distances, and the positions of the filling holes (13) are consistent with the spacing position dimensions of the gull-shaped plates (8).

4. The outer layer protective recycled concrete prestressed composite slab according to claim 1, characterized in that: Four connecting bolts (7) are provided on both sides of the gull-shaped plate (8), and two side reinforcing ribs (6) are connected to both sides of the gull-shaped plate (8) via the connecting bolts (7).

5. The outer layer protective recycled concrete prestressed composite slab according to claim 1, characterized in that: The side positioning plates (3) are located on both sides of the positioning base plate (1), and are threadedly penetrated by upper bolts (10) through a top plate (14). Two reinforcing steel bars are provided inside the side positioning plates (3), and the distance between the middle parts of the two top plates (14) is consistent with the width of the main filling plate (9).

6. The outer layer protective recycled concrete prestressed composite slab according to claim 1, characterized in that: The main filling plate (9) is located lower than the side reinforcing ribs (6) provided on both sides, and the middle portion of the positioning bottom plate (1) is in an inverted trapezoidal shape, which is mutually compatible with the main filling plate (9).

7. The outer layer protective recycled concrete prestressed composite slab according to claim 5, characterized in that: The interior of the top plate (14) is filled with foamed concrete (15), and the foamed concrete (15) needs to cover the upper part of the dried high-strength concrete (12). The strength grade of the high-strength concrete (12) needs to be C60 or above.

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