A precast infill wall

Abstract

The utility model discloses a prefabricated filling wall of filling core belongs to the technical field of building component, and it includes outer page board, heat preservation board, inner page board, is provided with the reserved cavity in the inner page board. The prefabricated filling wall of filling core provided by the utility model is prefabricated in the factory, and the heat preservation board is integrated in the wall body, and the heat preservation construction link of the scene is saved. The setting of the reserved cavity can reduce the overall weight of the wall body, and the wall body and the main structure of the building form rigid composite connection, which greatly enhances the lateral displacement resistance of the wall body. The outer page steel wire net rack and the inner page steel wire net rack are effectively connected, the outer page board, the heat preservation board and the inner page board are stably connected, the interlayer separation of the wall body during transportation, installation and use is avoided, the overall shear resistance, shock resistance and heat preservation performance are improved, and the building energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to a precast core-filled wall, belonging to the field of building component technology. Background Technology

[0002] Infill walls are non-load-bearing walls in frame structures, primarily serving as enclosures and partitions. In traditional construction methods, the construction of infill walls involves complex processes such as formwork erection and insulation. Precast infill walls are wall components that are prefabricated in a factory and assembled on-site, improving on-site construction efficiency. However, existing precast infill wall structures are not rationally designed, resulting in their heavy weight and difficulties in transportation and installation. Furthermore, current precast infill walls use connectors to connect to the main building structure, and the connection strength between the precast infill wall and the main structure needs improvement. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a precast core-filled wall. The reserved cavity setting can reduce the overall weight of the wall and enable the wall to form a rigid composite connection with the main structure of the building.

[0004] This utility model achieves the above objectives by adopting the following technical solutions: A precast grouted wall includes an outer sheet, an insulation board, and an inner sheet arranged sequentially along the wall thickness direction. The outer sheet and the inner sheet are formed by curing grout, and the insulation board is wrapped between the inner sheet and the outer sheet. The inner page plate has a reserved cavity that extends along the height of the inner page plate. The upper and / or lower end surfaces of the inner page plate have ports that allow the reserved cavity to communicate with the outside.

[0005] Preferably, the reserved cavity extends through the upper and lower surfaces of the inner page plate; the bottom of the reserved cavity is interconnected along the width of the wall via a connecting groove.

[0006] Preferably, the left and right sides of the inner page plate are recessed to form reserved grooves, which extend along the height direction of the inner page plate and penetrate the upper and / or lower end surfaces of the inner page plate.

[0007] Preferably, the reserved cavity and reserved groove are located at the upper and / or lower part of the inner page plate, the middle part of the inner page plate in the height direction is solid, and the lower part of the wall is provided with a pouring port that communicates with the reserved cavity at the lower part.

[0008] Preferably, the precast core-filled wall provided by this utility model further includes an outer steel wire mesh frame and an inner steel wire mesh frame respectively disposed inside the outer and inner pages, and the outer and inner steel wire mesh frames are connected by a pull tab.

[0009] Preferably, the precast core-filled wall provided by this utility model further includes a first positioning member and a second positioning member sleeved on the pull tab, wherein the first positioning member and the second positioning member are respectively located on both sides of the insulation board; Both the first and second positioning members have insulation board insertion parts on their sides facing the insulation board. The side of the first positioning member away from the insulation board has a wire mesh support part, and the outer wire mesh frame is supported on the wire mesh support part.

[0010] Preferably, the pull tab is provided with an outer page wire mesh frame slot near the outer end of the outer page wire mesh frame, and the outer page wire mesh frame is also inserted into the outer page wire mesh frame slot; the pull tab is provided with an inner page wire mesh frame slot near the inner end of the inner page wire mesh frame, and the inner page wire mesh frame is inserted into the inner page wire mesh frame slot.

[0011] Preferably, the insulation board is provided with cross-threaded braids, which pass through the ends of the insulation board and are fixedly connected to the outer and inner steel wire mesh frames respectively.

[0012] Optionally, the horizontal cross-section of the reserved cavity is circular, elliptical, or square.

[0013] Preferably, the left and right sides of the wall are provided with protrusions and grooves, respectively; Alternatively, the left and right sides of the wall may be provided with a sub-slope and a main slope, respectively. Preferably, recessed areas are formed on both the left and right edges of the outer wall surface and the left and right edges of the inner wall surface.

[0014] In another embodiment, the precast core-filled wall provided by this utility model further includes L-shaped steel bars and spacers. One end of the L-shaped steel bar is hooked on the outer steel wire mesh frame, and the other end extends through the insulation board. The inner steel wire mesh frame is fixedly connected to the L-shaped steel bar by binding wire. The spacers are clamped on the outer steel wire mesh frame and extend away from the insulation board.

[0015] The beneficial effects of this utility model include, but are not limited to: The precast core-filled wall provided by this utility model is prefabricated in the factory, with the insulation board integrated into the wall body, eliminating the need for on-site insulation construction. Standardized prefabrication reduces production errors and material waste, simplifies on-site operations, reduces labor costs, and eliminates the need for connector materials, insulation construction, plastering processes, etc., thereby reducing on-site operation time, increasing construction efficiency, and shortening project duration.

[0016] The pre-reserved cavity reduces the overall weight of the wall, facilitating its transportation and on-site installation. When the wall is fixed to the main structure of the building on-site, the steel bars in the main structure are anchored into the pre-reserved cavity. After the grout is poured into the pre-reserved cavity and cured, the inner panel forms a solid structure, creating a rigid composite connection between the wall and the main structure of the building, rather than an independent splicing. This significantly enhances the wall's resistance to lateral displacement, thereby reducing the risk of cracking. It also makes the wall more closely conform to the stress transmission path of the main structure.

[0017] This utility model effectively connects the outer and inner steel wire mesh frames through a double-linking design of pull tabs and web wires, or with the assistance of L-shaped steel bars and pads, so that the outer sheet, insulation board and inner sheet are stably connected, avoiding the separation of the layers of the wall during transportation, installation and use, improving the overall shear resistance, seismic resistance and thermal insulation performance, reducing building energy consumption, and is suitable for high-rise buildings and buildings with high seismic requirements. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 A schematic diagram of the transverse cross-sectional structure of one type of precast core-filled wall provided by this utility model; Figure 2 A longitudinal cross-sectional structural diagram of one type of precast core-filled wall provided by this utility model; Figure 3 A schematic diagram of another precast core-filled wall provided by this utility model; Figure 4 A schematic diagram showing the installation of a connecting groove at the bottom of a reserved cavity; Figure 5 Schematic diagram when other cross-sectional shapes are used to reserve the cavity; Figure 6 A schematic diagram of the transverse cross-sectional structure of another precast core-filled wall provided by this utility model; Figure 7 This is a schematic diagram of the splicing of two precast grouting walls; Figure 8 This is a schematic diagram showing the connection between the outer steel wire mesh frame, the inner steel wire mesh frame, and the insulation board via pull tabs and positioning components. Figure 9 This is a schematic diagram of the sheet puller structure; Figure 10 This is a structural schematic diagram of the first positioning component; Figure 11 This is a schematic diagram showing the connection of the outer steel wire mesh frame, the inner steel wire mesh frame, and the insulation board using L-shaped steel bars and spacers. In the diagram, 100 is the outer plate; 200 is the insulation board; 210 is the arc groove; 300 is the inner plate; 400 is the reserved cavity; 410 is the connecting groove; 421 is the pouring gate; 422 is the vent hole; 500 is the reserved groove; 610 is the protrusion; 620 is the groove; 630 is the sub-slope; 640 is the main slope; 650 is the recessed area; 710 is the outer wire mesh frame; 720 is the inner wire mesh frame; 810 is the pull tab; 811 is the outer wire mesh frame groove; 812 is the inner wire mesh frame groove; 813 is the through hole; 814 is the positioning pin; 820 is the first positioning component; 821 is the wire mesh frame support part; 822 is the insulation board insertion part; 830 is the second positioning component; 910 is the web wire; 920 is the L-shaped steel bar; and 930 is the pad. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0020] It should be noted that many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-2 As shown, the precast grouted wall provided by this utility model includes an outer panel 100, an insulation board 200, and an inner panel 300 arranged sequentially along the wall thickness direction. The outer panel 100 faces the exterior facade of the building, and the inner panel 300 faces the interior facade of the building. The outer panel 100 and the inner panel 300 are formed by curing grout, so that all six sides of the insulation board 200 are wrapped between the inner panel 300 and the outer panel 100.

[0022] The inner page plate 300 has a reserved cavity 400 that extends along the height direction of the inner page plate 300. Ports are formed on the upper and / or lower end surfaces of the inner page plate 300 to allow the reserved cavity 400 to communicate with the outside.

[0023] The wall is prefabricated in the factory, and the insulation board 200 is integrated into the wall, eliminating the need for on-site insulation construction; the reserved cavity 400 reduces the overall weight of the wall, making it easier to transport and install on-site.

[0024] After installation onto the main structure of the building, steel bars extend downwards and upwards from the main structure above and below the wall, anchoring the upper and lower steel bars approximately 30cm into the pre-reserved cavity 400. Then, concrete grout is injected from the upper port of the pre-reserved cavity 400, integrally casting and connecting the wall with the main structure.

[0025] In practical applications, molds are customized according to the building's requirements. In one specific embodiment, the produced wall has a total thickness of 300mm, a width of 600mm, and a height of 3m. To meet fire safety requirements, the outer panel 100 needs to be 50mm thick, and the thickness of the insulation board 200 is determined according to energy-saving standards. The diameter of the reserved cavity 400 is determined based on the wall thickness and the thickness of the insulation board 200.

[0026] Typically, the outer sheet 100 and the inner sheet 300 are formed by curing lightweight concrete grout, which has excellent properties such as lightweight, heat insulation, sound insulation and fire resistance.

[0027] like Figure 2 As shown, in the first embodiment, the reserved cavity 400 penetrates the upper and lower ends of the inner page plate 300. During factory prefabrication, the insulation board 200 is installed inside the mold. The two sides of the insulation board 200 and the inner wall of the mold respectively form the casting cavity for the outer page plate 100 and the inner page plate 300. The core tube is installed inside the casting cavity for the inner page plate 300. Then, concrete grout is poured. After the concrete has initially set, the core tube is removed, the mold is dismantled, and curing is performed to form a wall with the reserved cavity 400.

[0028] The upper and lower ends of the wall are key areas where it connects to the main structure. Therefore, as... Figure 3 As shown, in the second embodiment, the reserved cavity 400 and reserved groove 500 are only provided in the upper and / or lower part of the inner page plate 300, while the middle part of the inner page plate 300 in the height direction is solid and prefabricated. A pouring port 421 communicating with the reserved cavity in the lower part of the wall is opened. For example, the reserved cavity is only provided in a range of 30cm up and down. When using this structure, the reserved cavity 400 in the upper part is cast integrally with the main structure on the construction site. The reserved cavity in the lower part is filled by pouring through the pouring port, which further balances the on-site construction efficiency and construction quality, and improves the integrity of the wall and the adaptability of construction.

[0029] In addition, during actual operation, an vent hole 422 is opened above the pouring port 421 near the top of the reserved cavity. Grout is injected from the pouring port 421. When grout is observed to emerge from the vent hole 421, the vent hole 422 is blocked and grouting is continued for a period of time before stopping and the pouring port is blocked.

[0030] Furthermore, such as Figure 4 As shown, the bottom of the reserved cavity 400 is interconnected along the width of the wall via a connecting groove 410. The connecting groove 410 ensures that the grout fills the lower part of the reserved cavity 400 densely, forming an integral structure.

[0031] like Figure 6As shown, in a preferred embodiment, the left and right sides of the inner page plate 300 are respectively recessed to form reserved grooves 500, which extend along the height direction of the inner page plate 300 and penetrate the upper and / or lower end surfaces of the inner page plate 300. Figure 7 As shown, after the two wall panels are spliced ​​together, the reserved grooves 500 at adjacent parts are combined to form a circumferentially closed reserved cavity 400. After the grout is poured into the reserved cavity 400 and cured, the two wall panels can be compositely connected, ensuring the overall strength of the wall.

[0032] Furthermore, a protrusion 610 and a groove 620 are respectively provided on the left and right sides of the wall; or, a sub-slope 630 and a main slope 640 are respectively provided on the left and right sides of the wall. When the two wall panels are joined, the cooperation of the protrusion 610 and groove 620, or the cooperation of the sub-slope 630 and main slope 640, enables the two wall panels to be accurately joined; moreover, it can form a zigzag joint surface, reducing heat conduction along the joint surface.

[0033] Furthermore, recessed areas 650 are formed on both the left and right edges of the outer wall and the left and right edges of the inner wall. After the two wall panels are joined together, mortar is applied to the recessed areas 650 and fiberglass mesh is pressed in, making them flush with the surrounding wall surface. This seals the joint and connects the two wall panels.

[0034] In this invention, the horizontal cross-section of the reserved cavity can be circular or square, or as follows: Figure 5 The shape shown is an ellipse.

[0035] like Figure 6 As shown, when it is necessary to increase the thickness of the insulation board to match the energy-saving requirements, in order to ensure the thickness of the precast concrete protective layer around the reserved cavity, an arc-shaped groove 210 can be cut out at the position of the insulation board corresponding to the reserved cavity.

[0036] In a preferred embodiment, the precast core-filled wall provided by this utility model further includes an outer page wire mesh frame 710 and an inner page wire mesh frame 720 respectively disposed inside the outer page plate 100 and the inner page plate 300. For example... Figure 8 As shown, the outer wire mesh frame 710 and the inner wire mesh frame 720 are connected by a tie plate 810. The wire mesh frame can improve the structural strength of the outer plate 100 and the inner plate 300. The wire mesh frame is preferably made of galvanized cold-drawn steel wire with a diameter of 3mm, and is formed by cross-welding of transverse and longitudinal wires to form a mesh structure.

[0037] Furthermore, cross-threaded webs 910 are provided inside the insulation board 200, forming a fixed connection between the cross-threaded webs and the insulation board. After passing through the end of the insulation board 200, the webs 910 are fixedly connected to the outer steel wire mesh frame 710 and the inner steel wire mesh frame 720 respectively.

[0038] Furthermore, such as Figure 8 , Figure 10 As shown in the figure, the precast core-filled wall provided by this utility model also includes a first positioning member 820 and a second positioning member 830 sleeved on the pull tab 810. The first positioning member 820 and the second positioning member 830 are respectively located on both sides of the insulation board 200. Both the first positioning member 820 and the second positioning member 830 have insulation board insertion parts 822 for inserting into the insulation board 200 on the side facing the insulation board 200. The first positioning member 820 has a wire mesh frame support part 821 on the side facing away from the insulation board 200, and the outer wire mesh frame 710 is supported on the wire mesh frame support part 821.

[0039] The end face of the wire mesh support part 821 is provided with a slot, and the outer wire mesh frame 710 is supported in the slot on the wire mesh support part 821.

[0040] like Figure 8 , Figure 9 As shown, the pull tab 810 has an outer page wire mesh frame slot 811 near its outer end, and the outer page wire mesh frame 710 is also inserted into the outer page wire mesh frame slot 811. The pull tab 810 has an inner page wire mesh frame slot 812 near its inner end, and the inner page wire mesh frame 720 is inserted into the inner page wire mesh frame slot 812. Several through holes 813 are also provided on the pull tab 810 between the outer page wire mesh frame slot 811 and the inner page wire mesh frame slot 812 for passing through positioning pins 814 to prevent the insulation board from moving towards the inner end of the pull tab 810.

[0041] During factory prefabrication, multiple first positioning members 820 are first inserted into the insulation board 200 at required intervals. Specifically, the insulation board insertion part 822 on the first positioning member 820 is inserted into the insulation board 200. Then, the horizontal wires of the outer steel wire mesh frame 710 are inserted into the steel wire mesh frame support part 821 on the first positioning member 820. Next, the inner end of the pull tab 810 is inserted forward into the insulation board 200. During the insertion process, the position of the pull tab 810 is adjusted so that the horizontal wires on the outer steel wire mesh frame 710 are also inserted into the bottom of the outer steel wire mesh frame slot 811 on the pull tab 810. Next, the second positioning member 830 is slipped onto the inner end of the pull tab 810 and pressed so that the insulation board insertion part 822 on the second positioning member 830 is inserted into the insulation board 200. Then, the positioning pin 814 passes through the through hole 813. The positioning pin is typically a cotter pin, commonly used in the construction industry. After the two legs of the cotter pin are passed through the through hole, the two legs are pried apart to prevent the cotter pin from separating from the pull tab. Finally, the inner page wire mesh frame 720 is clipped into the inner page wire mesh frame slot 812 on the pull tab 810 and secured with binding wire.

[0042] The pull tab 810 connects the outer wire mesh frame 710 and the inner wire mesh frame 720 together. The insulation board 200, restricted by the positioning pin 814, cannot move towards the inner end of the pull tab 810, thus preventing the first positioning member 820 from moving towards the inner end of the pull tab 810. The outer wire mesh frame 710 is supported on the wire mesh support portion 821 of the first positioning member 820, thus preventing the outer wire mesh frame 710 from moving towards the inner end of the pull tab 810. Simultaneously, under the action of the positioning pin 814 and the insulation board 200, the pull tab 810 cannot move towards its exterior wall facade, and the outer wire mesh frame 710 is locked in the outer wire mesh frame slot 811 on the pull tab 810, therefore the outer wire mesh frame 710 cannot move towards the outer end of the pull tab 810. Through the coordination of various structures, the distances between the insulation board 200 and the outer steel wire mesh frame 710, and between the insulation board 200 and the inner steel wire mesh frame 720, are fixed. The two ends of the pull tab 810 abut against the inner wall of the mold, thus fixing the distances between the inner and outer steel wire mesh frames 710 and the outer facade of the wall, and between the inner steel wire mesh frame 720 and the inner facade of the wall.

[0043] The two ends of the web wire 910 are welded to the outer steel wire mesh frame 710 and the inner steel wire mesh frame 720. In this way, a composite structure of insulation board 200 and steel wire mesh frame is formed. After the core tube forming the reserved cavity 400 is installed and fixed on the composite structure, the whole structure is placed in the mold and can be cast.

[0044] It should be noted that the specific structure and usage of the positioning component and pull tab can be referred to in several patent technologies published by the patentee, including CN215858318U, CN215858317U, CN113818579A, CN216195602U, and CN217679739U, and will not be elaborated here.

[0045] like Figure 11 As shown, in another embodiment, the two ends of the web wire 910 are welded and fixed to the outer page wire mesh frame 710 and the inner page wire mesh frame 820, respectively. Additionally, L-shaped reinforcing bars 920, spacers 930, and binding wires are used for auxiliary fixation of the outer page wire mesh frame 710 and the inner page wire mesh frame 720: the corner of the outer end of the L-shaped reinforcing bar 920 hooks onto the outer page wire mesh frame 710, or is further fixed using binding wires; the inner end passes through the insulation board and is flush with the inner facade of the infill wall. The spacers are clipped onto the outer page wire mesh frame and extend away from the insulation board, located between the outer page wire mesh frame 710 and the mold, and can also be further fixed using binding wires. The spacers can adopt conventional structures used in the construction industry; cross-shaped slots can be opened on the spacers to insert the cross-shaped intersection of the outer page wire mesh frame into the cross-shaped slots.

[0046] The inner page steel wire mesh frame 720 is fixed to the L-shaped steel bar 920 by binding wire.

[0047] During production, the outer end of the spacer block 930 and the inner end of the L-shaped steel bar 920 abut against the inner wall of the mold. Thus, the spacer block 930 prevents the outer wire mesh frame 710 and the insulation board 200 from moving towards the outer facade of the wall within the mold; the L-shaped steel bar 920 and the binding wire fix the distance between the inner wire mesh frame 720, the outer wire mesh frame 710, and the insulation board 200, and also prevent the composite structure from moving towards the inner facade of the wall within the mold.

[0048] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," and "fixing" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A precast grouted wall, characterized in that, It includes an outer sheet, an insulation board, and an inner sheet arranged sequentially along the thickness of the wall. The outer sheet and the inner sheet are formed by curing slurry, and the insulation board is wrapped between the inner sheet and the outer sheet. The inner page plate has a reserved cavity that extends along the height of the inner page plate. The upper and / or lower end surfaces of the inner page plate have ports that allow the reserved cavity to communicate with the outside.

2. The precast grouted wall according to claim 1, characterized in that, The reserved cavity extends through the upper and lower surfaces of the inner page plate; the bottom of the reserved cavity is interconnected along the width of the wall via a connecting groove.

3. The precast core-filled wall according to claim 1, characterized in that, The left and right sides of the inner page plate are recessed to form reserved grooves, which extend along the height direction of the inner page plate and penetrate the upper and / or lower ends of the inner page plate.

4. The precast core-filled wall according to claim 3, characterized in that, The reserved cavity and reserved groove are located at the upper and / or lower part of the inner page plate. The middle part of the inner page plate in the height direction is solid, and the lower part of the wall is provided with a pouring port that communicates with the reserved cavity at the lower part.

5. The precast grouted wall according to claim 1, characterized in that, It also includes an outer page wire mesh frame and an inner page wire mesh frame respectively disposed inside the outer page plate and the inner page plate, and the outer page wire mesh frame and the inner page wire mesh frame are connected by a pull tab.

6. The precast grouted wall according to claim 5, characterized in that, It also includes a first positioning component and a second positioning component sleeved on the pull tab, with the first positioning component and the second positioning component located on both sides of the insulation board, respectively; Both the first and second positioning members have insulation board insertion parts on their sides facing the insulation board. The side of the first positioning member away from the insulation board has a wire mesh support part, and the outer wire mesh frame is supported on the wire mesh support part.

7. The precast grouted wall according to claim 5, characterized in that, The pull tab has an outer page wire mesh frame slot near the outer end of the outer page wire mesh frame, and the outer page wire mesh frame is also inserted into the outer page wire mesh frame slot; the pull tab has an inner page wire mesh frame slot near the inner end of the inner page wire mesh frame, and the inner page wire mesh frame is inserted into the inner page wire mesh frame slot.

8. The precast grouted wall according to claim 5, characterized in that, The insulation board is provided with cross-threaded braids, which pass through the ends of the insulation board and are fixedly connected to the outer and inner steel wire mesh frames respectively.

9. The precast core-filled wall according to claim 1, characterized in that, The horizontal cross-section of the reserved cavity is circular, elliptical, or square.

10. The precast grouted wall according to claim 1, characterized in that, The left and right sides of the wall are respectively provided with protrusions and grooves; Alternatively, the left and right sides of the wall may be provided with a sub-slope and a main slope, respectively. The left and right edges of the exterior wall and the left and right edges of the interior wall both have recessed areas.

11. The precast grouted wall according to claim 8, characterized in that, It also includes L-shaped reinforcing bars and spacers. One end of the L-shaped reinforcing bar is hooked onto the outer steel wire mesh frame, and the other end extends through the insulation board. The inner steel wire mesh frame is fixedly connected to the L-shaped reinforcing bar by binding wire. The spacers are clamped onto the outer steel wire mesh frame and extend away from the insulation board.

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