A lightweight fabricated concrete wall panel

Abstract

The utility model discloses a light assembly type concrete wallboard, include: prefabricated wallboard, the concrete board of rectangle and all lateral wall are all provided with recess on, butt joint bucket, one one correspondence is housed in recess and bucket mouth orientation is identical with recess orientation, the outer wall of butt joint bucket and the inner wall of recess fixed connection, bend rebar, have a plurality of distribution from the center of prefabricated wallboard to the outside, bend rebar penetrates the butt joint bucket bottom of adjacent lateral wall and both ends are arranged in the corresponding butt joint bucket respectively, pouring pipeline has four intercommunication pouring mouth, is located in the corresponding butt joint bucket of prefabricated wallboard each lateral wall respectively. The light assembly type concrete wallboard strengthens space restraint and deformation resistance through bend rebar, improves stress transfer path, improves shear performance, when construction, injects concrete slurry into pouring pipeline, makes concrete slurry solidification and forms in the pouring pipeline of adjacent wallboard, realizes the fixed connection of adjacent wallboard, improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated component production technology, and in particular to a lightweight prefabricated concrete wall panel. Background Technology

[0002] Precast wall panels are concrete slab-shaped components that are processed and supported in prefabrication plants or construction sites for building assembly. They are also called wall panels or wall panels. Using precast concrete wall panels to build prefabricated buildings can improve the degree of factory and mechanized construction, reduce on-site construction work, save on-site labor, overcome the impact of seasons, and shorten the construction cycle.

[0003] In the prior art, such as the Chinese utility model patent with announcement number CN217480596U, a prefabricated wall panel is disclosed. By setting pre-embedded blind holes on the mating surface of the prefabricated wall panel body, a second steel bar is inserted. The two ends of the second steel bar are respectively inserted and matched with the pre-embedded blind holes on the mating surface of the two prefabricated wall panels, thereby realizing the assembly connection of the two prefabricated wall panels, which is convenient for construction and improves the installation efficiency.

[0004] However, during the assembly of the aforementioned precast wall panels, multiple second reinforcing bars need to be inserted between the mating surfaces of two adjacent precast wall panels. Although this allows for the mating of two precast wall panels, the splicing efficiency is low, and it is only suitable for connecting two precast wall panels in the horizontal direction. Furthermore, relying solely on the mating of the second reinforcing bars limits the connection strength between the two precast wall panels. Moreover, the aforementioned precast wall panels only have first reinforcing bars extending along the first direction, resulting in limited structural strength and failing to guarantee the shear resistance of the precast wall panels. In addition, the top of the first reinforcing bar protrudes from the top surface of the precast wall panel body, making the entire precast wall panel irregularly shaped. During storage and transportation, it is easily deformed by external forces, and the protruding part can easily scratch workers.

[0005] Therefore, it is necessary to improve the prefabricated wall panels in the existing technology. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects in the existing technology and provide a lightweight prefabricated concrete wall panel.

[0007] To achieve the above-mentioned technical effects, the technical solution of this utility model is as follows: a lightweight prefabricated concrete wall panel that is easy to assemble, improves connection strength, enhances shear resistance, facilitates transportation and storage, and ensures safety, comprising: A precast wall panel, wherein the precast wall panel is a rectangular concrete slab and each side wall is provided with a notch; The docking barrels are housed one-to-one in the recesses with the barrel openings facing the same direction as the recesses. The outer wall of the docking barrel is fixedly connected to the inner wall of the recess. Multiple bent steel bars are distributed from the center of the precast wall panel outwards. The bent steel bars penetrate the bottom of the connecting buckets of adjacent side walls and are respectively set in the corresponding connecting buckets at both ends. The pouring pipe has four interconnected pouring ports, which are located in the corresponding docking buckets on each side wall of the precast wall panel.

[0008] Preferably, to facilitate stress transfer, the bent reinforcing bar includes a smoothly transitioned transverse segment and a longitudinal segment, the transverse segment and the longitudinal segment extending along the width direction and length direction of the precast wall panel, respectively.

[0009] Preferably, in order to improve the structural strength of the connection between the wall panels, the casting pipe includes a transverse pipe and a longitudinal pipe that are connected and whose axial directions are parallel to the width and length directions of the precast wall panels, respectively.

[0010] Preferably, in order to facilitate convenient control of the opening and closing of the ends of the transverse and longitudinal pipes, the inner sides of the transverse and longitudinal pipes are sealed and detachably connected and contain at least two sealing plugs.

[0011] Preferably, in order to facilitate adjustment of the position of the sealing plug in the transverse and longitudinal pipes, the sealing plug is threadedly connected to the corresponding transverse or longitudinal pipe.

[0012] Preferably, for ease of assembly, one of the transverse pipes and the longitudinal pipes has a threaded interface on its side wall that communicates with its own internal cavity, and the other is threadedly connected to the threaded interface.

[0013] Preferably, the end sidewalls of both the transverse pipe and the longitudinal pipe adjacent to the pouring port are provided with drainage holes located inside the corresponding docking barrel.

[0014] Preferably, in order to achieve lightweight wall panels, the docking tank has a hollow cavity that is isolated from the outside.

[0015] Preferably, to enhance the sound insulation effect, the hollow cavity is filled with sound-insulating cotton.

[0016] Preferably, for ease of assembly, the docking barrel includes two docking shells connected by a fastening unit, the two docking shells enclosing the hollow cavity, and the bent steel bar and the pouring pipe are sealed and clamped between the two docking shells.

[0017] Preferably, to facilitate the connection of the mating shell, the fastening unit includes threaded bolts and nuts.

[0018] In summary, compared with the prior art, the lightweight prefabricated concrete wall panel of this utility model enhances spatial constraint and deformation resistance by bending steel bars, improves stress transmission path, and improves shear resistance. During construction, concrete slurry is injected into the pouring pipe, which solidifies and forms in the pouring pipe of adjacent wall panels, thereby achieving a fixed connection between adjacent wall panels and improving assembly efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the first embodiment; Figure 2 yes Figure 1 An explosion diagram; Figure 3 yes Figure 1 A cross-sectional structural diagram; Figure 4 yes Figure 1 Vertical cross-sectional structural diagram; Figure 5 yes Figure 4 The front view; Figure 6 This is a structural schematic diagram of the first embodiment, omitting the precast wall panels and bent steel bars; Figure 7 yes Figure 6 An explosion diagram; Figure 8 This is a structural schematic diagram of the second embodiment, omitting the precast wall panels and bent steel bars; Figure 9 yes Figure 8 An explosion diagram; In the diagram: 1. Precast wall panel; 11. Recess; 2. Connecting barrel; 21. Connecting shell; 22. Bolt; 23. Nut; 24. Sound insulation cotton; 3. Bent steel bar; 31. Horizontal section; 32. Longitudinal section; 4. Casting pipe; 41. Horizontal pipe; 42. Longitudinal pipe; 43. Sealing plug; 44. Threaded joint; 45. Drainage hole. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0021] First Embodiment

[0022] like Figures 1-7 As shown, a lightweight prefabricated concrete wall panel according to the first embodiment of this utility model includes: Precast wall panel 1, which is a rectangular concrete slab with recesses 11 on each side wall; The docking barrels 2 are respectively housed in the recesses 11, with the openings of the barrels facing the same direction as the recesses 11. The outer wall of the docking barrels 2 is fixedly connected to the inner wall of the recesses 11. The bent steel bars 3 are distributed outward from the center of the precast wall panel 1. The bent steel bars 3 penetrate the bottom of the connecting buckets 2 of the adjacent side walls and are respectively set in the corresponding connecting buckets 2. The pouring pipe 4 has four interconnected pouring ports, which are located in the corresponding docking buckets 2 on each side wall of the precast wall panel 1.

[0023] The precast wall panel 1 of this lightweight prefabricated concrete wall panel is mainly formed by pouring concrete slurry and then curing it. The precast wall panel 1 is rectangular in shape, and each of the four side walls is provided with a notch 11. The notch 11 is long and narrow, and its length direction is consistent with the length direction of the side wall it is located on. The notches 11 on the four side walls are arranged back to back, and a connecting barrel 2 is fixedly connected to the inner wall of the notch 11. Multiple bent steel bars 3 are distributed from the center of the precast wall panel 1 to the four corners. The two ends of the bent steel bars 3 are respectively set in the connecting barrel 2 corresponding to the two adjacent side walls. The concrete wall panel is also provided with a pouring pipe 4 fixedly connected to the precast wall panel 1. The pouring pipe 4 is cross-shaped, and its four ends of the pouring port are located in the four connecting barrels 2 respectively.

[0024] Specifically, the bent steel bar 3 includes a smoothly transitioned transverse section 31 and a longitudinal section 32. The transverse section 31 and the longitudinal section 32 extend along the width and length directions of the precast wall panel 1, respectively, making the overall shape of the bent steel bar 3 L-shaped. With the above structure, compared with traditional steel bars, the bent steel bar 3 forms a three-dimensional constraint effect in the precast wall panel 1. When the precast wall panel 1 is subjected to external forces (such as complex stress generated by an earthquake) and deforms, the bent steel bar 3 can restrict the deformation and crack propagation of concrete from multiple directions, effectively improving the overall toughness of the precast wall panel 1 and reducing the possibility of brittle failure of the precast wall panel 1 under stress.

[0025] Furthermore, the bent steel bar 3 can also change the stress transmission mode. When the precast wall panel 1 is subjected to load, the traditional mesh steel bar mainly transmits stress through tension and compression in the plane. However, due to its special shape, the bent steel bar 3 can transform and disperse a portion of the stress generated by the load in a more complex way, making the stress distribution inside the precast wall panel 1 more uniform, reducing stress concentration, and thus improving the load-bearing capacity of the precast wall panel 1.

[0026] In addition, the smooth transition connection between the transverse section 31 and the longitudinal section 32 can provide additional shear resistance. Through the bonding and mechanical interlocking with the concrete, it can effectively resist the shear force inside the precast wall panel 1. Compared with the traditional steel mesh, it can better meet the shear resistance requirements of the precast wall panel 1 under complex stress conditions.

[0027] Unlike existing technologies, this utility model provides recesses 11 on all four sides of the precast wall panel 1, namely the top, bottom and sides. The recesses 11 fix the docking bucket 2, which can better cooperate with the adjacent precast wall panels 1 by corresponding alignment parts or reserved positioning parts during installation. This plays a guiding and positioning role, making it easier for construction personnel to place the precast wall panel 1 in the predetermined position more accurately and quickly, thus improving installation efficiency.

[0028] Furthermore, the ends of the bent steel bars 3 in the precast wall panel 1 are all housed in the connecting bucket 2. This avoids the possibility of the bent steel bars 3 protruding from the outer surface of the wall panel during transportation and hoisting, which could collide with other objects and cause deformation of the steel bars. It also reduces the risk of construction workers being scratched by the bent steel bars 3. At the same time, when multiple precast wall panels 1 are stacked for transportation and splicing, it can reduce mutual interference between the steel bars and facilitate handling, stacking and splicing.

[0029] After the precast wall panels 1 are connected by the docking bucket 2, concrete slurry can be injected into the pouring pipe 4 of one of the precast wall panels 1, so that the concrete slurry can flow into the pouring pipe 4 of the adjacent precast wall panels 1 and solidify with the adjacent pouring pipe 4, thereby realizing the rapid fixed connection of the adjacent precast wall panels 1 and improving construction efficiency.

[0030] A further improvement is that the casting pipe 4 includes a transverse pipe 41 and a longitudinal pipe 42 that are connected and whose axial directions are parallel to the width and length directions of the precast wall panel 1, respectively.

[0031] Because the inside of the pouring pipe 4 is a hollow structure, it is fixed inside the precast wall panel 1 before construction. With the design of the notch 11 and the connecting bucket 2, the weight of the entire precast concrete wall panel is reduced compared to the solid rectangular concrete wall panel with steel bars and consistent length, width and height. This achieves lightweight production, reduces transportation costs, and facilitates hoisting, handling and construction.

[0032] Specifically, in this embodiment, a longitudinal pipe 42 is provided, with its two ends flush with the top and bottom ends of the precast wall panel 1, and the axis of the longitudinal pipe 42 is parallel to the sides of the precast wall panel 1. Threaded interfaces 44 are provided on both sides of the middle of the longitudinal pipe 42, and two threaded interfaces 44 are threadedly connected to transverse pipes 41. The end of the transverse pipe 41 away from the longitudinal pipe 42 is flush with the opening of the corresponding docking bucket 2. Thus, a cross-shaped casting pipe 4 is formed by combining one longitudinal pipe 42 and two transverse pipes 41.

[0033] A further improvement is that the inner sides of both the transverse pipe 41 and the longitudinal pipe 42 are sealed and detachably connected and contain at least two sealing plugs 43; the sealing plugs 43 are threadedly connected to the corresponding transverse pipe 41 or the corresponding longitudinal pipe 42.

[0034] Both the transverse pipe 41 and the longitudinal pipe 42 contain two sealing plugs 43. Specifically, the outer circumferential edge of the sealing plug 43 is threaded to the inner circumferential wall of the corresponding transverse pipe 41 or the corresponding longitudinal pipe 42. With this connection method, the axial position of the sealing plug 43 in the transverse pipe 41 or the longitudinal pipe 42 can be adjusted, and the connection and separation of the sealing plug 43 with the transverse pipe 41 or the longitudinal pipe 42 can also be controlled.

[0035] Therefore, when connecting two adjacent precast wall panels 1, the sealing plugs 43 at the ends of the corresponding horizontal pipes 41 or vertical pipes 42 are removed to connect the pouring pipes 4 of the two precast wall panels 1. Then, the sealing plugs 43 at any other location are opened and concrete slurry is injected. The concrete slurry flows, fills and solidifies in the two adjacent pouring pipes 4 to achieve a fixed connection between the two adjacent precast wall panels 1.

[0036] Furthermore, before pouring the concrete grout, the axial position of the sealing plug 43 within the corresponding transverse pipe 41 or longitudinal pipe 42 can be adjusted. Specifically, for concrete wall panels at lower positions, the sealing plug 43 can be moved away from the center of the precast wall panel 1, increasing the amount of concrete grout filling, thereby increasing the weight and structural strength of the concrete wall panel and improving its load-bearing capacity. For concrete wall panels at higher positions, since their load-bearing capacity requirements are lower than those at lower positions, the sealing plug 43 can be rotated closer to the center of the precast wall panel 1, reducing the amount of concrete grout filling the pouring pipe 4. This reduces the amount of concrete grout used while still meeting the structural strength requirements of the precast wall panel 1, saving costs on the one hand, and allowing the small amount of concrete grout to solidify quickly on the other, improving construction efficiency.

[0037] A further improvement is that the docking tank 2 has a hollow cavity that isolates it from the outside world. By having a hollow cavity that isolates the docking tank 2 from the outside world, the weight of the concrete wall panel can be reduced, making transportation and handling easier. At the same time, it can also reduce weight and achieve a certain degree of noise isolation.

[0038] A further improvement is that the hollow cavity is filled with sound-absorbing cotton 24. By filling the hollow cavity with sound-absorbing cotton 24, the weight is reduced while the sound-absorbing cotton 24 can absorb noise and improve the indoor living environment.

[0039] In order to make the docking bucket 2 have a hollow cavity and facilitate the filling of sound insulation cotton 24, and to seal the bent steel bar 3 and the pouring pipe 4 through the bottom of the docking bucket 2, in this embodiment, the docking bucket 2 includes two docking shells 21 connected by a fastening unit. The two docking shells 21 are distributed opposite each other along the thickness direction of the precast wall panel 1 and are sealed together. The two docking shells 21 enclose a hollow cavity. The bent steel bar 3 and the pouring pipe 4 are sealed and sandwiched between the two docking shells 21. The fastening unit includes a threaded bolt 22 and a nut 23.

[0040] Thus, during production, a mating shell 21 can be placed in the corresponding mold in advance, sound insulation cotton 24 can be filled into the mating shell 21, and after laying the pouring pipe 4 and the bent steel bar 3, another mating shell 21 with sound insulation cotton 24 can be fixedly connected to the previous mating shell 21 by bolts 22 and nuts 23 with threaded connection.

[0041] Second Embodiment

[0042] like Figure 8 and Figure 9 As shown, a lightweight prefabricated concrete wall panel of the second embodiment of the present invention is based on the first embodiment, except that the transverse pipe 41 and the longitudinal pipe 42 are provided with drainage holes 45 located in the corresponding docking barrel 2 on the end sidewalls adjacent to the pouring port.

[0043] With the above structure, before splicing two adjacent precast wall panels 1, the sealing plug 43 at the corresponding docking bucket 2 can be removed. After injecting concrete grout into the pouring pipe 4, the concrete grout can flow into the docking bucket 2 through the drain hole 45 while flowing in the pouring pipe 4 corresponding to the two adjacent precast wall panels 1. This fills the docking bucket 2 directly opposite each other between the two precast wall panels 1. In this way, the concrete grout is divided into two streams, which solidify in the two pouring pipes 4 and the two directly opposite docking buckets 2 respectively. This increases the connection contact area, forms a more solid connection node, improves the connection strength between the precast wall panels 1, and enables the two precast wall panels 1 to be better connected as a whole in order to transfer loads and improve the overall structural strength and seismic performance.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight prefabricated concrete wall panel, characterized in that, include: A precast wall panel, wherein the precast wall panel is a rectangular concrete slab and each side wall is provided with a notch; The docking barrels are housed one-to-one in the recesses with the barrel openings facing the same direction as the recesses. The outer wall of the docking barrel is fixedly connected to the inner wall of the recess. Multiple bent steel bars are distributed from the center of the precast wall panel outwards. The bent steel bars penetrate the bottom of the connecting buckets of adjacent side walls and are respectively set in the corresponding connecting buckets at both ends. The pouring pipe has four interconnected pouring ports, which are located in the corresponding docking buckets on each side wall of the precast wall panel.

2. The lightweight prefabricated concrete wall panel according to claim 1, characterized in that: The bent steel bar includes a smoothly transitioned transverse segment and a longitudinal segment, which extend along the width and length directions of the precast wall panel, respectively.

3. The lightweight prefabricated concrete wall panel according to claim 1, characterized in that: The casting pipeline includes a transverse pipeline and a longitudinal pipeline that are connected and whose axial directions are parallel to the width and length directions of the precast wall panel, respectively.

4. The lightweight prefabricated concrete wall panel according to claim 3, characterized in that: The inner sides of both the transverse and longitudinal pipes are sealed and detachably connected, and each contains at least two sealing plugs.

5. The lightweight prefabricated concrete wall panel according to claim 4, characterized in that: The sealing plug is threadedly connected to the corresponding transverse pipe or the corresponding longitudinal pipe.

6. The lightweight prefabricated concrete wall panel according to claim 3, characterized in that: Of the transverse pipe and the longitudinal pipe, one of them has a threaded interface on its side wall that communicates with its own internal cavity, and the other is threadedly connected to the threaded interface.

7. The lightweight prefabricated concrete wall panel according to claim 3, characterized in that: The transverse pipe and the longitudinal pipe are each provided with a drain hole located inside the corresponding docking barrel on the end sidewall adjacent to the pouring port.

8. The lightweight prefabricated concrete wall panel according to claim 1, characterized in that: The docking tank has a hollow cavity that is isolated from the outside world.

9. The lightweight prefabricated concrete wall panel according to claim 8, characterized in that: The hollow cavity is filled with sound-insulating cotton.

10. The lightweight prefabricated concrete wall panel according to claim 9, characterized in that: The docking barrel includes two docking shells connected by a fastening unit. The two docking shells enclose the hollow cavity, and the bent steel bar and the pouring pipe are sealed and sandwiched between the two docking shells.

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