Locally reinforced embedded concrete slab and production method thereof

Abstract

The invention relates to the field of fabricated buildings, in particular to a locally-reinforced embedded concrete plate and a production method thereof.The plate comprises a concrete facing layer and a heat preservation layer, the concrete facing layer is formed by pouring concrete mortar, and the heat preservation layer is formed by pouring heat preservation mortar; reinforcing parts are arranged at the upper end and the lower end of the concrete facing layer respectively, the thickness of the reinforcing parts is larger than that of other areas of the concrete facing layer, embedded nylon sleeves are arranged on the reinforcing parts, the embedded nylon sleeves and the concrete facing layer are connected into a whole, and SE hanging piece clamping grooves and steel bar clamping grooves are formed in the embedded nylon sleeves. The SE hanging piece clamping groove is matched with an SE stone curtain wall hanging piece in the prior art in an embedded mode, a tie bar is embedded into the steel bar clamping groove, the middle of the tie bar is embedded into the concrete facing layer, and the two ends of the tie bar are embedded into the heat preservation layer. The plate has the heat preservation effect and is high in strength, and the embedded connecting piece can be compatible with an SE hanging piece system and can be mixed with a traditional natural stone plate.

Description

Technical Field

[0001] The invention relates to the field of prefabricated buildings, and in particular to a locally reinforced embedded concrete plate and a production method thereof. Background Art

[0002] The exterior walls of existing buildings are often shaped with natural stone slabs or imitation stone slabs. Natural stone slabs are heavy in weight. When hanging, the slabs are too thin and are prone to collapse and fall off, causing safety accidents. Therefore, they need to be thicker, which makes the cost of natural stone slabs higher. In addition, since natural stone slabs are already in a solid state, embedded parts cannot be set inside them. Therefore, multiple connectors are required to fix them on the metal frame when hanging. In order to make up for the shortcomings of the above-mentioned natural stone slabs, imitation stone slabs made of cement-based materials have gradually replaced natural stone slabs. However, the imitation stone slabs in the prior art have the problem of low strength, and the embedded parts set in the imitation stone slabs are also not compatible with the SE hanging system used in the traditional natural stone slab curtain wall. Therefore, the imitation stone slabs in the prior art cannot be mixed with traditional natural stone slabs. In addition, the natural stone slabs and imitation stone slabs in the prior art do not have a heat preservation function. Using them as exterior walls also requires a separate insulation layer, which increases the construction steps. Summary of the invention

[0003] The present invention firstly discloses a partially reinforced embedded concrete plate, which improves the strength of the imitation stone plate by reinforcing the plate locally and embedding universal connectors in the reinforced parts, and can also be mixed with traditional natural stone plates by using an SE hanging system to assemble curtain walls. At the same time, the imitation stone plate of the present invention is formed at one time with a thermal insulation material during molding, which can prevent the thermal insulation material from falling off on the basis of having a thermal insulation effect.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A partially reinforced embedded concrete plate comprises a concrete facing layer and a thermal insulation layer which are connected as one. The concrete facing layer is cast by concrete mortar, and the thermal insulation layer is cast by thermal insulation mortar. Reinforced parts are respectively arranged at the upper end and the lower end of the concrete facing layer. The thickness of the reinforced parts is greater than the thickness of other areas of the concrete facing layer. The reinforced parts are provided with embedded nylon sleeves, which are connected as one body with the concrete facing layer. SE hanger slots and steel bar slots are arranged on the embedded nylon sleeves. The SE hanger slots match the inlay of SE stone curtain wall hangers in the prior art. Tie bars are embedded in the steel bar slots. The middle part of the tie bars is embedded in the concrete facing layer, and the two ends of the tie bars are embedded in the thermal insulation layer.

[0005] Furthermore, the upper end and the lower end of the concrete finishing layer are respectively provided with two reinforcement parts, and the reinforcement part at the upper end is arranged opposite to the reinforcement part at the lower end.

[0006] Furthermore, the thermal insulation mortar includes EPS particle mortar and inorganic thermal insulation mortar.

[0007] Furthermore, the tie bar is a U-shaped structure.

[0008] Furthermore, the embedded nylon sleeve includes a first connecting plate and a third connecting plate that are spaced apart and parallel to each other, one end of the third connecting plate is fixedly connected to the middle part of the first connecting plate through a second connecting plate that is perpendicular to the first connecting plate, the other end of the third connecting plate is fixedly connected to the fourth connecting plate, the fourth connecting plate is perpendicular to the third connecting plate, and an SE hanger slot with an open end is formed between the first connecting plate and the third connecting plate; a limiting card plate is provided on the first connecting plate beside the second connecting plate, one end of the limiting card plate is fixedly connected to the first connecting plate, the other end of the limiting card plate is bent toward one side of the second connecting plate, and a steel bar slot with an open end is formed between the second connecting plate and the limiting card plate.

[0009] Furthermore, the first connecting plate is parallel to the outer surface of the concrete finishing layer, and one end of a limiting clamping plate provided on the first connecting plate is embedded in the concrete finishing layer.

[0010] Furthermore, the overall thickness of the concrete finishing layer is less than the thickness of the thermal insulation layer.

[0011] The present invention also discloses a method for producing the locally reinforced embedded concrete slab, comprising the following steps: Step 1) Place the outer mold on the steel mold table, set nylon sleeve fixed molds on the inner sides of the side walls at both ends of the outer mold, and fix the nylon sleeve fixed molds to the side walls of the outer mold with bolts, leaving a distance between the bottom surface of the nylon sleeve fixed mold and the bottom surface of the outer mold; Step 2) Install the embedded nylon sleeve on the nylon sleeve fixing mold, and then embed the tie bar into the steel bar slot of the embedded nylon sleeve, so that the length of the two ends of the tie bar exposed in the steel bar slot is the same; Step 3) pouring concrete mortar into the outer mold until it is flush with the top of the steel bar slot; Step 4) placing the inner mold inside the outer mold and on top of the concrete mortar poured in step 3), and adjusting the inner mold to a preset height; Step 5) Pour concrete mortar again in the gap between the outer mold and the inner mold until the thickness of the preset reinforcement part is reached; Step 6) After completing step 5), the inner mold is removed, and then placeholder molds are installed on both sides of the inner side of the outer mold at the top of the reinforced part; Step 7) pouring thermal insulation mortar on the top surface of the concrete mortar poured in step 5), so that the thermal insulation mortar wraps the exposed end of the tie bar; Step 8) After curing is completed, remove the outer mold, placeholder mold, nylon sleeve fixed mold and rotatable pressure rod.

[0012] Furthermore, in the step 1), a rotatable pressure rod is installed on the inner side of the nylon sleeve fixed mold on each side, and the rotatable pressure rod includes a pressure rod handle located at the upper part and a pressing plate located at the lower part, the top end of the pressing plate is installed on the pressure rod handle through an anchor nail, and the lower end of the pressing plate forms a spring hook; the rotatable pressure rod is installed on the nylon sleeve fixed mold with bolts, and the rotatable pressure rod can rotate along the installation point, and the pressure rod handle is located at the upper part and the pressing plate is located at the lower part during installation; In the step 2), before installing the embedded nylon sleeve, the rotatable pressure rod is first rotated to move the spring hook away from the nylon sleeve fixing mold. After the embedded nylon sleeve is placed on the nylon sleeve fixing mold, the rotatable pressure rod is rotated again to make the spring hook press the embedded nylon sleeve.

[0013] Furthermore, hooks are provided at both ends of the inner mold. When installing the inner mold in step 4), the hooks are hung on the side panels of the outer mold. A horizontal mark is provided on the outer wall of the side panel of the outer mold. The hooks are connected to the side panels of the outer mold by adjusting screws. The installation height of the inner mold can be adjusted by turning the adjusting screws with reference to the horizontal mark.

[0014] When pouring and forming the concrete facing layer, the present invention locally thickens the upper and lower dry hanging connection points of the concrete slab to strengthen the strength of the hanging points, and at the same time, an embedded nylon sleeve compatible with the SE hanger of the stone curtain wall is pre-embedded at the hanging point as a connecting piece, and then a thermal insulation layer is formed by pouring thermal insulation mortar. Compared with the imitation stone slab in the prior art, the present invention realizes that the imitation stone slab also has a thermal insulation effect, and no additional thermal insulation layer is required, which helps to reduce construction procedures and construction costs. The overall thickness of the concrete slab designed by the present invention is thinner than that of the existing imitation stone slab, and the weight is reduced by at least 20%. It can also be mixed with traditional natural stone slabs using the SE hanger system to assemble curtain walls. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of a partially reinforced embedded concrete slab in the embodiment; Figure 2 for Figure 1 Left view of; Figure 3 is a cross-sectional schematic diagram of an embedded nylon sleeve; Figure 4 A top view of the assembled mold for processing and forming a concrete facing panel layer; Figure 5 for Figure 4 AA section view; Figure 6 for Figure 4 BB cross-sectional view; Figure 7 A top view of the assembled mold for forming a thermal insulation layer; Figure 8 for Figure 7 CC section view; Fig. 9 is a schematic diagram of the structure of a rotatable pressure rod; Figures 10(a) to 10(g) are schematic diagrams of various stages of the production process of locally reinforced embedded concrete panels, where: Figure 10 (a) is a schematic diagram after the outer mold is assembled; Figure 10 (b) is a schematic diagram after the first pouring is completed; Figure 10 (c) is a schematic diagram after the inner mold is installed; Figure 10 (d) is a schematic diagram after the second pouring is completed; FIG10 (e) is a schematic diagram after the inner mold is removed and the placeholder mold is installed; Figure 10 (f) is a schematic diagram after the third pouring is completed; Figure 10 (g) is a schematic diagram of the finished plate after the combined mold is removed; Fig.11 It is a structural schematic diagram of the partially reinforced embedded concrete slab in the embodiment when it is assembled into a curtain wall using the SE hanging system.

[0016] Reference numerals: 1. Concrete finishing layer; 2. Reinforced parts; 3. Embedded nylon sleeve; 301. Hanger slot; 302. Steel bar slot; 303. First connecting plate; 304. Second connecting plate; 305. Third connecting plate; 306. Fourth connecting plate; 307. Limiting plate; 4. Insulation layer; 5. Tie bars; 6. Outer mold; 7. Inner mold; 8. Nylon sleeve fixing mold; 9. Bolt; 10. Rotatable pressure rod; 101. Pressure rod handle; 102. Pressure sheet; 103. Spring hook; 104. Anchor nail; 11. Hook; 12. Adjusting screw; 13. Placeholder mold; 14. Horizontal mark; 15. Overflow groove. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] This embodiment discloses a stone-like plate, specifically a partially reinforced embedded concrete plate (hereinafter referred to as "plate"), whose structure is as follows Figure 1 and Figure 2As shown, the plate is mainly cast by concrete mortar and thermal insulation mortar. The concrete mortar is cast to form a concrete facing layer 1, and the thermal insulation mortar is cast to form an insulation layer 4. The overall thickness of the concrete facing layer 1 is less than the thickness of the insulation layer 4. The upper and lower ends of the concrete facing layer 1 are respectively where the dry hanging connection points of the plate are located. In order to improve the strength of the plate without increasing the thickness, this embodiment adopts a local thickening method to strengthen the strength of the dry hanging connection points, that is, two reinforcement parts 2 are respectively set at the upper and lower ends of the concrete facing layer 1. The reinforcement part 2 at the upper end is arranged opposite to the reinforcement part 2 at the lower end, so that the thickness of the reinforcement part 2 is greater than the thickness of other areas of the concrete facing layer 1, and an embedded nylon sleeve 3 is pre-embedded at the reinforcement part 2 as a universal connector. The embedded nylon sleeve 3 is provided with a SE hanger slot 301 and a steel bar slot 302. The SE hanger slot 301 matches the inlay of the SE stone curtain wall hanger in the prior art. The steel bar slot 302 is embedded with a tie bar 5, which is a U-shaped steel bar, with the middle part embedded in the concrete facing layer 1, and the two ends exposed and embedded in the insulation layer 4. The tie bar 5 in the increased area acts on the insulation layer 4 to prevent the insulation layer 4 from falling off. The insulation mortar includes EPS particle mortar and inorganic insulation mortar. The EPS particle mortar is mainly mixed with polystyrene particles, cement, sand, additives, etc., and has the properties of light weight, insulation, sound insulation and fire prevention.

[0019] The structure of the embedded nylon sleeve 3 is as follows: Figure 3As shown, it can be divided into a first connecting plate 303, a second connecting plate 304, a third connecting plate 305, a fourth connecting plate 306 and a limiting card plate 305. Among them, the first connecting plate 303 and the third connecting plate 305 are spaced apart and arranged in parallel with each other, the first connecting plate 303 is longer than the third connecting plate 305, the second connecting plate 305 is perpendicular to the first connecting plate 303, one end of the second connecting plate 305 is connected to one end of the third connecting plate 305, the other end of the second connecting plate 305 is connected to the middle of the first connecting plate 303, the other end of the third connecting plate 305 is fixedly connected to the fourth connecting plate 306, the fourth connecting plate 306 is perpendicular to the third connecting plate 305, and a SE pendant card slot 301 with one end open is formed between the first connecting plate 303 and the third connecting plate 305. A limiting clamp 307 is provided on the first connecting plate 303 beside the second connecting plate 304. One end of the limiting clamp 307 is fixedly connected to the first connecting plate 303, and the other end of the limiting clamp 307 is bent toward one side of the second connecting plate 304. A steel bar clamping groove 302 with one end open is formed between the second connecting plate 304 and the limiting clamp 307. Before pouring the concrete finishing layer 1, the embedded nylon sleeve 3 is first fixed at a designated position, and then concrete mortar is poured to connect the embedded nylon sleeve 3 with the concrete finishing layer 1. The first connecting plate 303 after connection is parallel to the outer surface of the concrete finishing layer 1, and a certain distance is left between the two. The outer surface of the fourth connecting plate 306 is lower than the side end surface of the concrete finishing layer 1. One end of the limiting clamp 307 provided on the first connecting plate 303 and the limiting clamp 307 are buried together in the interior of the concrete finishing layer 1.

[0020] The above-mentioned plate structure is produced by combining Figure 4-Figure 1 0 (g) is described as follows, including the following steps: Step 1) First, assemble a combined mold to form a concrete facing layer 1. The combined mold includes an outer mold 6, an inner mold 7, and a nylon sleeve fixed mold 8. The concrete facing layer 1 can be formed by pouring concrete mortar through the combined mold. Figures 4 to 6 The installation process of the combined mold is described as follows: 1.1) Referring to FIG. 10 (a), the outer mold 6 is placed on a steel mold table, and a nylon sleeve fixed mold 8 is respectively arranged on the inner side of the side walls at both ends of the outer mold 6. The outer contour of the nylon sleeve fixed mold 8 matches the structure of the embedded nylon sleeve 3. A rotatable pressure rod 10 is arranged beside the nylon sleeve fixed mold 8. The nylon sleeve fixed mold 8 and the rotatable pressure rod 10 are fixed to the side wall of the outer mold 6 together with bolts 9. The rotatable pressure rod 10 can rotate along the mounting point, and a designed distance is reserved between the bottom surface of the nylon sleeve fixed mold 8 and the bottom surface of the outer mold 6; The structure of the rotatable pressure rod 10 is as follows: Fig. 9As shown, it includes a lever handle 101 at the top and a pressing sheet 102 at the bottom, the top of the pressing sheet 102 is fixed to the lower end of the lever handle 101 by an anchor 104, and the lower end of the pressing sheet 102 is bent to form a spring hook 103. When the rotatable lever 10 is installed, the pressing sheet 102 is hinged on the nylon sleeve fixing mold 8 so that it can rotate along the hinge point, so that the lever handle 101 faces upward and the spring hook 103 faces downward.

[0021] 1.2) First, press the lever handle 101 to rotate the rotatable lever 10 to a certain angle, so that the spring hook 103 is away from the nylon sleeve fixing mold 8, and then the embedded nylon sleeve 3 is set on the nylon sleeve fixing mold 8. After the embedded nylon sleeve 3 is installed, the rotatable lever 10 is rotated again to make the pressing plate 102 vertical relative to the ground, so that the spring hook 103 presses the embedded nylon sleeve 3. Next, the U-shaped tie bar 5 is embedded in the steel bar slot 302 of the embedded nylon sleeve 3, so that the length of the two ends of the tie bar 5 exposed from the steel bar slot 302 is the same.

[0022] 1.3) Referring to FIG. 10 ( b ), concrete mortar is poured into the outer mold 6 until it is flush with the top of the steel bar slot 302 , and then the mortar is vibrated sufficiently.

[0023] 1.4) After pouring the concrete mortar in 1.3) to form the thinner main body of the concrete facing layer 1, the reinforcement part 2 needs to be poured next. As shown in FIG10(c), the inner mold 7 is placed inside the outer mold 6 so that it is located on the upper part of the poured concrete mortar. Figure 6 and Figure 4 As shown, hooks 11 are provided at both ends of the inner mold 7, and the hooks 11 are hung on the side panels of the outer mold 6. The outer walls of the side panels of the outer mold 6 are provided with horizontal marks 14 for elevation. The hooks 11 are connected to the side panels of the outer mold 6 through adjusting screws 12. By rotating the adjusting screws 12, the bottom surface of the hook 11 of the inner mold 7 is adjusted to be consistent with the height of the horizontal mark 14, and then the adjusting screws 12 are locked.

[0024] 1.5) Pour concrete mortar into the gap between the outer mold 6 and the inner mold 7 until the concrete mortar overflows into the overflow groove 15 inside the inner mold 7, and then fully vibrate. After the pouring is completed, rotate the rotatable pressure rod 10 to separate the spring hook 103 from the concrete mortar and then perform curing, as shown in Figure 10 (d). At this time, the concrete finishing layer 1 is poured.

[0025] Step 2) Install the placeholder mold 13 and pour the insulation mortar to form the insulation layer 4; Figure 7 , Figure 8As shown in FIG. 10 ( e ), the inner mold 7 is first removed, and then placeholder molds 13 are installed on both sides of the inner side of the outer mold 6 at the top of the reinforcement part 2 to prevent the top of the reinforcement part 2 from being poured with thermal insulation mortar.

[0026] Step 3) After the placeholder mold 13 is installed, pour the thermal insulation mortar on the top surface of the concrete finishing layer 1 so that the thermal insulation mortar wraps the exposed end of the tie bar 5, and then performs curing. The state after this step is completed is shown in Figure 10 (f).

[0027] Step 4) After the curing is completed, the outer mold 6, the placeholder mold 13, the nylon sleeve fixed mold 8 and the rotatable pressure rod 10 are removed, and the sheet metal forming is completed. The sheet metal after forming is shown in FIG. 10 (g).

[0028] The plate formed by the production method given above in this embodiment has the embedded nylon sleeves 3 at both ends which are compatible with the stone curtain wall SE hangers in the prior art, so it can be mixed with natural stone plates to form a curtain wall (such as Fig.11 as shown).

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locally reinforced embedded concrete slab, characterized in that: It includes a concrete facing layer and a thermal insulation layer which are connected as a whole. The concrete facing layer is cast by concrete mortar, and the thermal insulation layer is cast by thermal insulation mortar. The upper and lower ends of the concrete facing layer are respectively provided with reinforcement parts. The thickness of the reinforcement parts is greater than the thickness of other areas of the concrete facing layer. The reinforcement parts are provided with embedded nylon sleeves. The embedded nylon sleeves are connected to the concrete facing layer as a whole. The embedded nylon sleeves are provided with SE hanger slots and steel bar slots. The SE hanger slots match the inlay of SE stone curtain wall hangers in the prior art. Tie bars are embedded in the steel bar slots. The middle part of the tie bars are embedded in the concrete facing layer, and both ends of the tie bars are embedded in the thermal insulation layer.

2. The locally reinforced embedded concrete slab according to claim 1, characterized in that: The upper end and the lower end of the concrete facing layer are respectively provided with two reinforcement parts, and the reinforcement part at the upper end is arranged opposite to the reinforcement part at the lower end.

3. The locally reinforced embedded concrete slab according to claim 1, characterized in that: The thermal insulation mortar comprises EPS particle mortar and inorganic thermal insulation mortar.

4. The locally reinforced embedded concrete slab according to claim 1, characterized in that: The tie bar is a U-shaped structure.

5. The locally reinforced embedded concrete slab according to claim 1, characterized in that: The embedded nylon sleeve includes a first connecting plate and a third connecting plate which are arranged at intervals and parallel to each other, one end of the third connecting plate is fixedly connected to the middle part of the first connecting plate through a second connecting plate which is perpendicular to the first connecting plate, the other end of the third connecting plate is fixedly connected to the fourth connecting plate, the fourth connecting plate is perpendicular to the third connecting plate, and an SE hanger slot with an open end is formed between the first connecting plate and the third connecting plate; a limiting card plate is provided on the first connecting plate beside the second connecting plate, one end of the limiting card plate is fixedly connected to the first connecting plate, the other end of the limiting card plate is bent toward one side of the second connecting plate, and a steel bar slot with an open end is formed between the second connecting plate and the limiting card plate.

6. The locally reinforced embedded concrete slab according to claim 5, characterized in that: The first connecting plate is parallel to the outer surface of the concrete finishing layer, and one end of a limiting clamping plate is provided on the first connecting plate and embedded in the concrete finishing layer.

7. The locally reinforced embedded concrete slab according to claim 1, characterized in that: The overall thickness of the concrete facing layer is less than the thickness of the thermal insulation layer.

8. The method for producing a partially reinforced embedded concrete slab according to any one of claims 1 to 7, characterized in that: The steps include: Step 1) Place the outer mold on the steel mold table, set nylon sleeve fixed molds on the inner sides of the side walls at both ends of the outer mold, and fix the nylon sleeve fixed molds to the side walls of the outer mold with bolts, leaving a distance between the bottom surface of the nylon sleeve fixed mold and the bottom surface of the outer mold; Step 2) Install the embedded nylon sleeve on the nylon sleeve fixing mold, and then embed the tie bar into the steel bar slot of the embedded nylon sleeve, so that the length of the two ends of the tie bar exposed in the steel bar slot is the same; Step 3) pouring concrete mortar into the outer mold until it is flush with the top of the steel bar slot; Step 4) placing the inner mold inside the outer mold and on top of the concrete mortar poured in step 3), and adjusting the inner mold to a preset height; Step 5) Pour concrete mortar again in the gap between the outer mold and the inner mold until the thickness of the preset reinforcement part is reached; Step 6) After completing step 5), the inner mold is removed, and then placeholder molds are installed on both sides of the inner side of the outer mold at the top of the reinforced part; Step 7) pouring thermal insulation mortar on the top surface of the concrete mortar poured in step 5), so that the thermal insulation mortar wraps the exposed end of the tie bar; Step 8) After curing is completed, remove the outer mold, placeholder mold, nylon sleeve fixed mold and rotatable pressure rod.

9. The production method according to claim 8, characterized in that: In the step 1), a rotatable pressure rod is installed on the inner side of the nylon sleeve fixed mold on each side, and the rotatable pressure rod includes a pressure rod handle located at the upper part and a pressing plate located at the lower part, the top end of the pressing plate is installed on the pressure rod handle through an anchor nail, and the lower end of the pressing plate forms a spring hook; the rotatable pressure rod is installed on the nylon sleeve fixed mold with bolts, and the rotatable pressure rod can rotate along the installation point, and the pressure rod handle is located at the upper part and the pressing plate is located at the lower part during installation; In the step 2), before installing the embedded nylon sleeve, the rotatable pressure rod is first rotated to move the spring hook away from the nylon sleeve fixing mold. After the embedded nylon sleeve is placed on the nylon sleeve fixing mold, the rotatable pressure rod is rotated again to make the spring hook press the embedded nylon sleeve.

10. The production method according to claim 8, characterized in that: Hooks are provided at both ends of the inner mold. When installing the inner mold in step 4), the hooks are hung on the side panels of the outer mold. A horizontal mark is provided on the outer wall of the side panel of the outer mold. The hooks are connected to the side panels of the outer mold by adjusting screws. The installation height of the inner mold can be adjusted by turning the adjusting screws with reference to the horizontal mark.

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