A 3D printed wall structure without corner structural columns and its construction method

Abstract

The present invention discloses a 3D printing wall structure without corner structural columns and a construction method thereof. The wall structure includes multiple layers of wall units, and each layer of wall units is composed of a wall basic unit A and a wall basic unit B, and the wall basic unit A and the wall basic unit B are stacked up and down; the wall basic unit A includes a transverse concrete block A and a longitudinal concrete block A, and the wall basic unit B includes a transverse concrete block B, a longitudinal concrete block B and a longitudinal concrete block C. The present invention does not require additional structural columns at the corners, and can also be said to replace the setting of structural columns. Continuous and uninterrupted construction of 3D printing is achieved, and at the same time, the overall performance of the structure can be improved, realizing true intelligent construction of 3D printing of buildings. The structural form of the present invention is relatively simple, and continuous printing can be achieved, which is convenient and fast, greatly improving construction efficiency, and reducing the loss of raw materials and unnecessary waste.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D concrete printing, and more specifically relates to a 3D printed wall structure without corner structural columns and a construction method thereof. Background Art

[0002] Existing buildings primarily fall into three categories: brick wall structures, light steel keel gypsum board structures, and reinforced concrete structures. These two types of wall structures often have drawbacks, including complex construction techniques, a wide variety of auxiliary materials, long construction periods, high levels of construction waste, and heavy weight. With rapid socioeconomic development, people's expectations for living standards and living environments are constantly increasing, particularly for residential and office buildings. 3D printing, as an innovative technology, has gained widespread application. This technology utilizes a layer-by-layer manufacturing process, allowing the processing to proceed unaffected by the complexity of the physical prototype. These advantages have led to its widespread application in the construction industry.

[0003] Existing 3D printing technologies for buildings cannot print steel reinforcement, and vertical reinforcement is difficult to arrange within the printed concrete, limiting the overall performance of the structure. 3D printing architectural designers, drawing inspiration from masonry construction methods, have incorporated structural columns into wall corners to improve the overall performance of 3D printed structures. However, structural columns cannot be constructed using 3D printing, making it difficult to fully realize the advantages of 3D printing's intelligent, continuous construction capabilities. Summary of the Invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention aims to design a 3D printed wall structure and its construction method that can not only improve the overall performance of the structure but also avoid setting structural columns in the corners.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a 3D printed wall structure without corner structural columns, comprising multiple layers of wall units, each layer of wall units consisting of a wall basic unit A and a wall basic unit B, wherein the wall basic unit A and the wall basic unit B are stacked up together;

[0006] The basic wall unit A includes a transverse concrete block A and a longitudinal concrete block A, and the right end of the transverse concrete block A is connected to the left side of the longitudinal concrete block A; the basic wall unit B includes a transverse concrete block B, a longitudinal concrete block B and a longitudinal concrete block C, and the right end of the transverse concrete block A is located between the longitudinal concrete block B and the longitudinal concrete block C, and the right end edge of the transverse concrete block A is aligned with the right edge of the longitudinal concrete block B, the left and right side edges of the longitudinal concrete block B and the longitudinal concrete block C are aligned, the front end of the longitudinal concrete block B is connected to the rear side of the transverse concrete block A, and the rear end of the longitudinal concrete block C is connected to the front side of the transverse concrete block A.

[0007] Furthermore, the wall basic unit A and the wall basic unit B are bonded together as one.

[0008] Furthermore, the multi-layer wall units are bonded together into one.

[0009] Furthermore, the heights of the wall basic unit A and the wall basic unit B are the same.

[0010] Furthermore, the heights of the wall basic unit A and the wall basic unit B are both 50±5 mm.

[0011] A construction method for a 3D printed wall structure without corner structural columns comprises the following steps:

[0012] A. Select the print head

[0013] The print head of the 3D printing equipment adopts a flat and wide cross-section. The print head of corresponding width is selected according to the actual thickness of the wall to be printed, so that each layer of the wall only needs to be printed once according to the preset path to reach the required wall thickness;

[0014] B. Printing wall basic unit A

[0015] First, print the horizontal concrete block A along the horizontal path to the left edge of the vertical concrete block A, and then print the vertical concrete block A along the vertical path.

[0016] C. Printing wall basic unit B

[0017] First, print the longitudinal concrete block B along the longitudinal path and pause at the rear edge of the transverse concrete block B. Then, move longitudinally by the width of the transverse concrete block B and continue printing the longitudinal concrete block C. After printing is completed, move the print head to the right end of the transverse concrete block B and print the transverse concrete block B along the transverse path.

[0018] Furthermore, the printing material used by the printing device is a quick-setting concrete material, and during printing, the printing time of the upper and lower layers at the same vertical position does not exceed the final setting time of the material, and the printing time of the same horizontal layer does not exceed the initial setting time of the material.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This invention significantly reduces labor during the printing process, and printing is dust-free. Driven by code, the printer prints a layer on a two-dimensional plane along a preset path. The printer then advances its Z axis by one layer, and the second layer is printed on top of the existing first layer. The two layers of printed material are connected together through the upward and downward extrusion and gelation of the print head, forming a physical wall structure.

[0021] 2. This invention eliminates the need for structural columns in corners. This printing solution results in better overall wall performance, eliminating the need for additional structural columns in corners. This approach effectively replaces the need for structural columns. This enables continuous, uninterrupted 3D printing, while also improving the overall performance of the structure, achieving true intelligent 3D printing for architectural construction.

[0022] 3. The structure of the present invention is relatively simple, enabling continuous printing, which is convenient and fast, greatly improving construction efficiency and reducing the loss and unnecessary waste of raw materials. Furthermore, the printing effect is simple and beautiful, ensuring the integrity and load-bearing capacity of the wall while meeting the needs of printing various architectural shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of the 3D printing measure effect.

[0024] Figure 2 This is the path trajectory diagram of the basic unit A of the 3D printed wall.

[0025] Figure 3 is a path trajectory diagram of the basic unit B of the 3D printed wall.

[0026] In the figure: 1. Horizontal concrete block A, 2. Longitudinal concrete block A, 3. Longitudinal concrete block B, 4. Horizontal concrete block B, 5. Longitudinal concrete block C. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings. Figure 1-3 A 3D printed wall structure without corner structural columns is shown, including multiple layers of wall units. Each layer of wall units is composed of a basic wall unit A and a basic wall unit B. The basic wall unit A and the basic wall unit B are stacked up together.

[0028] The basic wall unit A includes a transverse concrete block A1 and a longitudinal concrete block A2, and the right end of the transverse concrete block A1 is connected to the left side of the longitudinal concrete block A2; the basic wall unit B includes a transverse concrete block B4, a longitudinal concrete block B3 and a longitudinal concrete block C5, and the right end of the transverse concrete block A1 is located between the longitudinal concrete block B3 and the longitudinal concrete block C5, and the right end edge of the transverse concrete block A1 is aligned with the right edge of the longitudinal concrete block B3, the left and right edges of the longitudinal concrete block B3 and the longitudinal concrete block C5 are aligned, the front end of the longitudinal concrete block B3 is connected to the rear side of the transverse concrete block A1, and the rear end of the longitudinal concrete block C5 is connected to the front side of the transverse concrete block A1.

[0029] Furthermore, the wall basic unit A and the wall basic unit B are bonded together as one.

[0030] Furthermore, the multi-layer wall units are bonded together into one.

[0031] Furthermore, the heights of the wall basic unit A and the wall basic unit B are the same.

[0032] Furthermore, the heights of the wall basic unit A and the wall basic unit B are both 50±5 mm.

[0033] A construction method for a 3D printed wall structure without corner structural columns comprises the following steps:

[0034] A. Select the print head

[0035] The print head of the 3D printing equipment adopts a flat and wide cross-section. The print head of corresponding width is selected according to the actual thickness of the wall to be printed, so that each layer of the wall only needs to be printed once according to the preset path to reach the required wall thickness;

[0036] C. Printing wall basic unit A

[0037] First, print the horizontal concrete block A1 along the horizontal path to the left edge of the vertical concrete block A2, and then print the vertical concrete block A2 along the vertical path.

[0038] C. Printing wall basic unit B

[0039] First, print the longitudinal concrete block B3 along the longitudinal path and pause at the rear edge of the transverse concrete block B4. Then, move longitudinally by the width of the transverse concrete block B4 and continue printing the longitudinal concrete block C5. After printing is completed, move the print head to the right end of the transverse concrete block B4 and print the transverse concrete block B4 along the transverse path.

[0040] Furthermore, the printing material used by the printing device is a quick-setting concrete material, and during printing, the printing time of the upper and lower layers at the same vertical position does not exceed the final setting time of the material, and the printing time of the same horizontal layer does not exceed the initial setting time of the material.

[0041] The embodiments of the present invention are as follows: Figure 1 As shown, according to the actual printing wall width, select the print head of the same width, determine the corner position, and compile the 3D printing path trajectory at the corner position as shown in Figure 2-3The diagram shows that the first layer of printing can be done by selecting one of the two path trajectories of 3D printing wall basic unit A and basic unit B. Take the printing path trajectory diagram of the first layer where the basic unit is selected as the wall basic unit A as an example: the 3D printing material is transported to the 3D printing head, and then the print head prints the first layer according to the pre-programmed path trajectory of the wall basic unit A, that is, first print the horizontal concrete block A1 along the horizontal path to the left edge of the vertical concrete block A2, and then print the vertical concrete block A2 along the vertical path; since the width of the selected print head is consistent with the width of the wall, the first layer of printing is completed by printing according to the preset path trajectory once; then the print head is raised and printed layer by layer according to the same path trajectory of the wall basic unit A; until the same wall basic unit A is used. When the vertical height of the unit A printing track layer reaches 50mm, the printing path track of the wall basic unit B is changed when printing the next layer. That is, the longitudinal concrete block B3 is first printed along the longitudinal path to the rear edge of the transverse concrete block B4, and then it is moved longitudinally by the width of the transverse concrete block B4 and then continues to print the longitudinal concrete block C5; after printing is completed, the print head is moved to the right end of the transverse concrete block B4, and the transverse concrete block B4 is printed along the transverse path. It is also printed 50mm high according to this type of track, and then the printing path track of the wall basic unit A is changed in the next layer; and so on, until the wall reaches the required height.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0043] like Figure 1 As shown, according to the actual printing wall width, select the print head of the same width, determine the corner position, and compile the 3D printing path trajectory at the corner position as shown in Figure 2-3The first layer of printing can be performed in either of two path trajectories: basic unit A and basic unit B of the 3D printing wall. Taking the A-type printing path trajectory diagram for the first layer as an example, the 3D printing material is fed to the 3D print head, which then prints the first layer according to the pre-programmed A-type path trajectory. This means that horizontal concrete block A is first printed along the horizontal path to the left edge of vertical concrete block A, and then along the vertical path to the end of vertical concrete block A. Since the selected print head width is consistent with the wall width, a single print along the preset path trajectory completes the first layer. The print head is then raised and prints layer by layer along the same A-type path trajectory until the vertical height of the layer using the same A-type printing path reaches 50 mm. When printing the next layer, the B-type printing path trajectory is switched. This means that vertical concrete block B is first printed along the vertical path to the rear edge of horizontal concrete block B, and then moved vertically by the width of horizontal concrete block B before continuing to print vertical concrete block C. After printing is complete, the print head moves to the right end of horizontal concrete block B and prints horizontal concrete block B along the horizontal path, also following this path to a height of 50 mm. The A-type printing path trajectory is then switched to the next layer. This continues in this manner until the wall reaches the required height.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A 3D printed wall structure without corner columns, characterized by: It includes multiple layers of wall units, each layer of wall units consists of a wall basic unit A and a wall basic unit B, both of which are 3D printed, and the wall basic unit A and the wall basic unit B are stacked up and down; The wall basic unit A comprises a transverse concrete block A (1) and a longitudinal concrete block A (2), the right end of the transverse concrete block A (1) being connected to the left side of the longitudinal concrete block A (2); the wall basic unit B comprises a transverse concrete block B (4), a longitudinal concrete block B (3) and a longitudinal concrete block C (5), the right end of the transverse concrete block B (4) being located between the longitudinal concrete block B (3) and the longitudinal concrete block C (5), and the right end edge of the transverse concrete block B (4) being aligned with the right edge of the longitudinal concrete block B (3), the left and right side edges of the longitudinal concrete block B (3) and the longitudinal concrete block C (5) being aligned, the front end of the longitudinal concrete block B (3) being connected to the rear side of the transverse concrete block A (1), and the rear end of the longitudinal concrete block C (5) being connected to the front side of the transverse concrete block B (4); The wall basic unit A and the wall basic unit B are bonded together; The multi-layer wall units are bonded together into one.

2. The 3D printed wall structure without corner columns according to claim 1, characterized in that: The basic wall unit A and the basic wall unit B have the same height.

3. The 3D printed wall structure without corner columns according to claim 1, characterized in that: The heights of the wall basic unit A and the wall basic unit B are both 50±5 mm.

4. A construction method for a 3D printed wall structure without corner columns as claimed in claim 1, characterized in that: The following steps are involved: A. Select the print head The print head of the 3D printing equipment adopts a flat and wide cross-section. The print head of corresponding width is selected according to the actual thickness of the wall to be printed, so that each layer of the wall only needs to be printed once according to the preset path to reach the required wall thickness; Printing wall basic unit A First, print the horizontal concrete block A (1) along the horizontal path to the left edge of the vertical concrete block A (2), and then print the vertical concrete block A (2) along the vertical path; C. Printing wall basic unit B First, the longitudinal concrete block B (3) is printed along the longitudinal path until it reaches the rear edge of the transverse concrete block B (4) and is paused. Then, the longitudinal concrete block C (5) is continued to be printed after the longitudinal movement is made by the width of the transverse concrete block B (4). After the printing is completed, the print head is moved to the right end of the transverse concrete block B (4) and the transverse concrete block B (4) is printed along the transverse path.

5. The construction method of a 3D printed wall structure without corner structural columns according to claim 4, characterized in that: The printing material used by the printing device is quick-setting concrete material. During printing, the printing time of the upper and lower layers at the same vertical position does not exceed the final setting time of the material; and the printing time of the same horizontal layer does not exceed the initial setting time of the material.

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