3D printed reinforced concrete member

Abstract

The utility model discloses a 3D printing reinforced concrete member, and belongs to the technical field of building 3D printing. Comprising a concrete printing layer, a concrete printing bottom plate and framework structures, the concrete printing bottom plate is of a plane structure, the framework structures are fixed to the concrete printing bottom plate, the multiple framework structures are arranged, the adjacent framework structures are vertically stacked, and the concrete printing bottom plate is arranged on the outer sides of the framework structures in a surrounding mode. A plurality of skeleton structures are stacked to be matched with layered printing during 3D printing, so that the skeleton structures cannot interfere with the movement range of the 3D printing equipment, the 3D printing equipment can cross over the skeleton structures to move, the printing freedom degree of the 3D printing equipment can be improved, and the 3D printing efficiency is improved. And meanwhile, the framework structure can reinforce the 3D printed concrete member, and the upper limit of compression resistance and bending resistance of the concrete member is improved.

Description

Technical Field

[0001] The utility model relates to a 3D printed reinforced concrete component, and belongs to the technical field of building 3D printing. Background Art

[0002] 3D printing is a rapid prototyping technology that has developed rapidly in recent years. Its application scope includes aerospace, manufacturing, biomedicine, food, clothing, art creation, architectural models and other fields. With the improvement of existing 3D printing technology and the development of new 3D printing technology, large-scale 3D printing equipment has been launched one after another, making it possible to print large-size products and bringing about a rapid reduction in printing costs. Therefore, 3D printed buildings came into being.

[0003] For 3D printing of reinforced concrete components, it is often necessary to install a steel cage inside the component and fill the printing range with concrete slurry to connect the printed layer and the steel cage as one, so as to improve the structural strength of the component. However, the length of the steel cage is fixed before the printing operation. Therefore, even when the height of the printed layer is low, the length of the steel cage is still much greater than the height of the printed layer. At this time, the steel cage will interfere with the activity path of the printing device, making it impossible for the printing device to cross the space above the printed layer, thereby greatly limiting the printing freedom of the printing device. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a 3D printed reinforced concrete component, which solves the problem in the prior art that the steel cage interferes with the activity path of the printing device, making it impossible for the printing device to cross the space above the printing layer, thereby greatly limiting the printing freedom of the printing device.

[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical scheme: 3D printing reinforced concrete components, including a concrete printing layer, a concrete printing base plate and a skeleton structure, the concrete printing base plate is a plane structure, the skeleton structure is fixed on the concrete printing base plate, a plurality of skeleton structures are provided, adjacent skeleton structures are vertically stacked, the concrete printing base plate is surrounded and arranged on the outside of the skeleton structure, the concrete printing base plate is provided with a plurality of layers, adjacent concrete printing base plates are vertically stacked, a gap is formed between the concrete printing base plate and the skeleton structure to form a filling gap, and the filling gap is filled with concrete slurry.

[0006] By adopting the above technical solution, 3D printing of buildings is often carried out in layers. Therefore, a plurality of skeleton structures are stacked to cooperate with the layered printing during 3D printing, and the overall skeleton structure can be divided into several layers for stacking and splicing. In this way, the height of the skeleton structure can be increased as the stacking thickness of the 3D printing device increases. Therefore, this will not interfere with the movement range of the 3D printing device, so that the 3D printing device can move over the skeleton structure, which is beneficial to improving the printing freedom of the 3D printing device. At the same time, the skeleton structure can reinforce the 3D printed concrete components and improve the upper limit of the compression and bending resistance of the concrete components.

[0007] The utility model is further configured as follows: the skeleton structure includes a connecting plate, a connecting column and a plug-in column, the connecting plate is arranged in a ring shape, a plurality of splicing holes are arranged in an equal-angle circular array on the connecting plate, the connecting column is inserted into the splicing hole, the inner diameter of the splicing hole into which the connecting column is inserted is the same as the outer diameter of the connecting column, a plurality of connecting columns are provided, and there is a splicing hole between adjacent connecting columns, the inner diameter of the splicing hole into which the connecting column is not inserted is smaller than the outer diameter of the connecting column, the plug-in columns are provided at both axial ends of the connecting column, and the outer diameter of the plug-in column is the same as the inner diameter of the splicing hole into which the connecting column is not inserted.

[0008] By adopting the above technical solution, when adjacent skeleton structures are stacked, it is only necessary to rotate the connecting plate in the unstacked skeleton structure by a certain angle so that the end of the connecting column on it is aligned with the opening of the splicing hole in the installed skeleton structure where no connecting column is set. At this time, the end of the connecting column in the unstacked skeleton structure can be inserted into the above-mentioned splicing hole. At this time, the plug-in column at the end of the connecting column in the installed skeleton structure can extend into the splicing hole in the unstacked skeleton structure, thereby completing the stacking and fixation of adjacent skeleton structures without welding or bonding the connection points, thereby ensuring the integrity and stability of the skeleton structure and improving the efficiency of stacking and assembly.

[0009] The utility model is further configured as follows: an auxiliary plate is placed between adjacent connecting columns, both ends of the auxiliary plate extend onto the concrete printing layer respectively and fit with the plane where the stacking direction of the concrete printing layer is located, the middle of the auxiliary plate passes through the center of the connecting plate, and a through hole is opened on the auxiliary plate, which is aligned with the opening of the splicing hole between the adjacent connecting columns, the through hole is coaxially arranged with the splicing hole, and the through hole penetrates the auxiliary plate.

[0010] By adopting the above technical solution, the two ends of the auxiliary plate are extended to the concrete print layer, so that the concrete print layer can be embedded and connected with the auxiliary plate during the printing and stacking process, so that the concrete print layer is hard connected to the skeleton structure through the auxiliary plate, further improving the connection between the concrete print layer and the skeleton structure, which is beneficial to improving the structural strength of reinforced concrete components.

[0011] The utility model is further configured as follows: a baffle is surrounded and fitted around the inner side of the connecting plate, and the extending direction of the baffle is the same as the stacking direction of the skeleton structure.

[0012] By adopting the above technical solution, when the printed reinforced concrete component is a hollow part, the flow of concrete in the filling interval is restricted by the baffle, thereby forming a hollow area inside the connecting plate. At this time, the poured concrete slurry connects the skeleton structure and the concrete printing layer as one after solidification. At this time, the inner side of the connecting plate is hollow, thereby achieving the purpose of printing a hollow structure reinforced concrete component.

[0013] The utility model is further configured as follows: a contact surface between the auxiliary plate and the concrete printing layer is provided with a limiting block extending into the concrete printing layer, and the limiting block is fixedly connected to the auxiliary plate.

[0014] By adopting the above technical solution, the connection area between the auxiliary plate and the concrete print layer can be further increased by setting the limit block. At the same time, after the limit block is fixed to the concrete print layer, the horizontal movement of the end of the auxiliary plate can be prevented, which is beneficial to improve the connection firmness between the auxiliary plate and the concrete print layer.

[0015] The utility model is further configured that: the inner side of the connecting plate is filled with concrete slurry.

[0016] By adopting the above technical solution, when the printed reinforced concrete component is a solid part, the baffle is not used at this time, and the concrete slurry can be directly poured on the inner side of the connecting plate and the filling gap. After the concrete slurry solidifies, it is connected to the external concrete printing layer through the skeleton structure, which greatly improves the structural strength of the reinforced concrete component. The work of filling the filling gap and the inner side of the connecting plate with concrete slurry and printing the concrete printing layer can be carried out at the same time. It is only necessary to keep the height of the concrete slurry liquid surface lower than the highest point of the concrete printing layer, thereby greatly improving the production efficiency of reinforced concrete components.

[0017] The beneficial effect of the utility model is that when 3D printing a building, it is often printed in layers, so a plurality of skeleton structures are stacked to cooperate with the layered printing during 3D printing, and the overall skeleton structure can be divided into several layers for stacking and splicing, so that the height of the skeleton structure can be increased with the increase of the stacking thickness of the 3D printing device 10, so that it will not interfere with the movement range of the 3D printing device, so that the 3D printing device can move over the skeleton structure, which is beneficial to improve the printing freedom of the 3D printing device, and at the same time the skeleton structure can reinforce the 3D printed concrete components, and improve the upper limit of the compression and bending resistance of the concrete components. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the structure inside the concrete printing layer of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure when the auxiliary board is not installed;

[0021] Figure 4 It is a schematic diagram of the structure when a skeleton structure is installed for the utility model;

[0022] Figure 5 This is a structural cross-sectional view of the connection between the auxiliary plate and the concrete printing layer in the utility model.

[0023] In the figure: 10, concrete printing layer; 11, concrete printing bottom plate; 12, connecting plate; 13, connecting column; 14, auxiliary plate; 15, through hole; 16, filling interval; 17, plug-in column; 18, splicing hole; 19, concrete printing top plate; 20, limit block. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the following is a brief introduction Figure 1-5 Shown, the utility model is further described.

[0025] like Figure 1 and Figure 2 As shown, the 3D printed reinforced concrete component includes a concrete printing layer 10, a concrete printing base plate 11 and a skeleton structure. The concrete printing base plate 11 is a planar structure. The skeleton structure is fixed on the concrete printing base plate 11. There are several skeleton structures, and adjacent skeleton structures are stacked vertically. The concrete printing base plate 11 is surrounded and arranged outside the skeleton structure. The concrete printing base plate 11 is provided with several layers, and adjacent concrete printing base plates 11 are stacked vertically. There is a gap between the concrete printing base plate 11 and the skeleton structure to form a filling gap 16, and the filling gap 16 is filled with concrete slurry.

[0026] like Figure 3 and Figure 5As shown, the skeleton structure includes a connecting plate 12, a connecting column 13 and a plug-in column 17. The connecting plate 12 is arranged in a ring shape. A plurality of splicing holes 18 are arranged in an equiangular circular array on the connecting plate 12. The connecting column 13 is inserted into the splicing hole 18. The inner diameter of the splicing hole 18 inserted into the connecting column 13 is the same as the outer diameter of the connecting column 13. A plurality of connecting columns 13 are arranged, and there is a splicing hole 18 between adjacent connecting columns 13. The inner diameter of the splicing hole 18 into which the connecting column 13 is not inserted is smaller than the outer diameter of the connecting column 13. The plug-in column 17 is arranged at the two axial ends of the connecting column 13. The outer diameter of the plug-in column 17 is the same as the inner diameter of the splicing hole 18 into which the connecting column 13 is not inserted. The connection between the connecting column 13 and the splicing hole 18 in the same skeleton structure is welded, and an auxiliary plate 14 is placed between adjacent connecting columns 13. The two ends of the auxiliary plate 14 extend to the concrete printing layer 10 respectively and fit with the plane where the stacking direction of the concrete printing layer 10 is located. The middle of the auxiliary plate 14 passes through the center of the connecting plate 12. The auxiliary plate 14 is provided with a through hole 15 aligned with the opening of the splicing hole 18 between the adjacent connecting columns 13. The through hole 15 is coaxially arranged with the splicing hole 18, and the through hole 15 penetrates the auxiliary plate 14. The inner diameter of the through hole 15 is the same as the outer diameter of the connecting column 13. The abutting surface of the auxiliary plate 14 and the concrete printing layer 10 is provided with a limit block 20 extending into the concrete printing layer 10, and the limit block 20 is fixedly connected to the auxiliary plate 14.

[0027] When a hollow reinforced concrete member needs to be printed, a baffle is provided around and in close contact with the inner side of the connecting plate 12 , and the extending direction of the baffle is the same as the stacking direction of the skeleton structure.

[0028] When a solid reinforced concrete member needs to be printed, concrete slurry is filled inside the connecting plate 12 .

[0029] When the reinforced concrete component is printed to a specified height, a concrete printed top plate 19 is printed on the upper end surface of the reinforced concrete component through the concrete printed layer 10, and the concrete printed top plate 19 seals the internal structure of the concrete printed layer 10. At this time, the concrete printed layer 10, the concrete printed bottom plate 11 and the concrete printed top plate 19 form the outer shell structure of the reinforced concrete component, and the outer shell structure is connected to the internal skeleton structure through concrete slurry and the auxiliary plate 14.

[0030] When 3D printing buildings, they are often printed in layers. Therefore, a stacking method of several skeleton structures is used to cooperate with the layered printing during 3D printing. The overall skeleton structure can be divided into several layers for stacking and splicing. In this way, the height of the skeleton structure can increase with the increase of the stacking thickness of the 3D printing device. Therefore, this will not interfere with the movement range of the 3D printing device, allowing the 3D printing device to move over the skeleton structure, which is beneficial to improving the printing freedom of the 3D printing device. At the same time, the skeleton structure can reinforce the 3D printed concrete components and improve the upper limit of the compression and bending resistance of the concrete components.

[0031] When adjacent skeleton structures are stacked, it is only necessary to rotate the connecting plate 12 in the unstacked skeleton structure by a certain angle so that the end of the connecting column 13 in the unstacked skeleton structure is aligned with the opening of the splicing hole 18 in the installed skeleton structure where the connecting column 13 is not provided. At this time, the plug-in column 17 on the end of the connecting column 13 in the unstacked skeleton structure can be inserted into the above-mentioned splicing hole 18. At this time, the plug-in column 17 at the end of the connecting column 13 in the installed skeleton structure can extend into the splicing hole 18 in the unstacked skeleton structure where the connecting column 13 is not installed. Figure 3 If the auxiliary plate 14 needs to be installed, the connecting column 13 in the unstacked frame structure passes through the through hole 15 on the auxiliary plate 14 and is connected to another frame structure through the above process, such as Figure 2 As shown. The stacking and fixing of adjacent skeleton structures are thus completed. At this time, the connecting plate 12 can limit the radial sliding and axial sliding of the connecting column 13. When the reinforced concrete member is subjected to radial bending force, the connecting plate 12 can connect several connecting columns 13 as a whole and transfer the bending force to the connecting column 13 to achieve the purpose of improving the bending strength of the reinforced concrete member. When the reinforced concrete member is subjected to vertical pressure, the pressure of the connecting columns 13 at both ends can be transferred to the connecting column 13 in the middle under the connecting action of the connecting plate 12, so that several connecting columns 13 are subjected to force as a whole, which is conducive to improving the pressure resistance of the reinforced concrete member. Therefore, after the above-mentioned skeleton structure is stacked, there is no need to weld or bond the connection points, which ensures the integrity and stability of the skeleton structure while improving the efficiency of stacking and assembly.

[0032] By extending the two ends of the auxiliary plate 14 onto the concrete print layer 10, the concrete print layer 10 can be embedded and connected with the auxiliary plate 14 during the printing and stacking process, so that the concrete print layer 10 is hard-connected to the skeleton structure through the auxiliary plate 14, further improving the connection between the concrete print layer 10 and the skeleton structure, which is beneficial to improving the structural strength of the reinforced concrete component. By setting the limit block 20, the connection area between the auxiliary plate 14 and the concrete print layer 10 can be further increased. At the same time, after the limit block 20 is fixed to the concrete print layer 10, the horizontal movement of the end of the auxiliary plate 14 can be prevented, which is beneficial to improving the connection firmness between the auxiliary plate 14 and the concrete print layer 10.

[0033] When the printed reinforced concrete component is a hollow part, the flow of concrete in the filling gap 16 is restricted by the baffle, thereby forming a hollow area inside the connecting plate 12. At this time, the poured concrete slurry connects the skeleton structure and the concrete printing layer 10 as a whole after solidification. At this time, the inner side of the connecting plate 12 is hollow, thereby achieving the purpose of printing a hollow structure reinforced concrete component.

[0034] When the printed reinforced concrete component is a solid part, the baffle is not used at this time, and concrete slurry can be directly poured inside the connecting plate 12 and the filling space 16. After the concrete slurry solidifies, it is connected to the external concrete printing layer 10 through the skeleton structure, which greatly improves the structural strength of the reinforced concrete component. In addition, the work of filling the filling space 16 and the inside of the connecting plate 12 with concrete slurry and printing the concrete printing layer 10 can be carried out at the same time. It is only necessary to keep the height of the concrete slurry liquid level lower than the highest point of the concrete printing layer 10, thereby greatly improving the production efficiency of reinforced concrete components.

[0035] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. 3D printed reinforced concrete components, characterized by: The invention comprises a concrete printing layer (10), a concrete printing base plate (11) and a skeleton structure. The concrete printing base plate (11) is a planar structure. The skeleton structure is fixed on the concrete printing base plate (11). A plurality of skeleton structures are provided. Adjacent skeleton structures are stacked vertically. The concrete printing base plate (11) is arranged around the outer side of the skeleton structure. The concrete printing base plate (11) is provided with a plurality of layers. Adjacent concrete printing base plates (11) are stacked vertically. A gap is formed between the concrete printing base plate (11) and the skeleton structure to form a filling gap (16). Concrete slurry is filled in the filling gap (16).

2. The 3D printed reinforced concrete component according to claim 1, characterized in that: The skeleton structure comprises a connecting plate (12), a connecting column (13) and a plug-in column (17); the connecting plate (12) is arranged in a ring shape; a plurality of splicing holes (18) are arranged in an equal angle circular array on the connecting plate (12); the connecting column (13) is inserted into the splicing hole (18); the inner diameter of the splicing hole (18) into which the connecting column (13) is inserted is the same as the outer diameter of the connecting column (13); a plurality of connecting columns (13) are arranged; one splicing hole (18) is spaced between adjacent connecting columns (13); the inner diameter of the splicing hole (18) into which the connecting column (13) is not inserted is smaller than the outer diameter of the connecting column (13); the plug-in column (17) is arranged at the two axial ends of the connecting column (13); the outer diameter of the plug-in column (17) is the same as the inner diameter of the splicing hole (18) into which the connecting column (13) is not inserted.

3. The 3D printed reinforced concrete component according to claim 2, characterized in that: An auxiliary plate (14) is placed between adjacent connecting columns (13), the two ends of the auxiliary plate (14) respectively extend onto the concrete printing layer (10) and are in contact with the plane where the concrete printing layer (10) is stacked, the middle of the auxiliary plate (14) passes through the center of the connecting plate (12), and the auxiliary plate (14) is provided with a through hole (15) aligned with the opening of the splicing hole (18) between adjacent connecting columns (13), the through hole (15) is coaxially arranged with the splicing hole (18), and the through hole (15) penetrates the auxiliary plate (14).

4. The 3D printed reinforced concrete component according to claim 2, characterized in that: A baffle is arranged around and in close contact with the inner side of the connecting plate (12), and the extending direction of the baffle is the same as the stacking direction of the skeleton structure.

5. The 3D printed reinforced concrete component according to claim 1, characterized in that: A stop block (20) extending into the concrete printing layer (10) is provided on the abutting surface between the auxiliary plate (14) and the concrete printing layer (10), and the stop block (20) is fixedly connected to the auxiliary plate (14).

6. The 3D printed reinforced concrete component according to claim 2, characterized in that: The inner side of the connecting plate (12) is filled with concrete slurry.

Images