A skin light core material template of a bionic insect sheath wing structure and a construction method

Abstract

The present application relates to a kind of skin light core material template of bionic insect sheath wing structure and construction method.The skin light core material template of bionic insect sheath wing structure includes: a plurality of holes are arranged in the thickness direction of light core material template;Skin is located on the upper and lower surfaces of the light core material template, and the skin has the bionic insect sheath wing structure matched with the hole.The construction method steps are as follows: the macroscopic geometric characteristics of the light core material template, hole and mortise and tenon structure size and position distribution are determined, the light core material template is prepared and is assembled;Ultra-high ductility concrete is prepared, and it is sprayed to the inside and outside surface of the light core material template to a certain thickness, fills the hole of the light core material template and forms bionic insect sheath wing structure;The ultra-high ductility concrete of spraying is maintained, and surface treatment is carried out.Compared with prior art, the present application has the advantages of energy saving, environmental protection, reducing labor cost, high degree of mechanization and the like.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a biomimetic insect elytra structure-based lightweight core material template and its construction method. Background Technology

[0002] With the continuous development of modern construction technology and the increasing improvement of people's living standards, the current extensive construction techniques suffer from low mechanization, serious environmental damage, and resource waste, and can no longer meet people's needs. Therefore, prefabricated construction methods have begun to be promoted. However, traditional prefabricated construction still suffers from problems such as high cost, transportation difficulties, size limitations, significant application restrictions, poor seismic performance, and poor structural quality. Existing concrete skin construction technology suffers from insufficient load-bearing capacity, lack of tensile ductility in the skin itself, and poor integrity between the skin and the formwork, which can easily lead to loss of life and property. Furthermore, considering that future construction sites may include extreme environments such as polar regions, oceans, deserts, and deep space, with unique construction conditions, traditional construction methods and prefabricated construction rely on manual labor and are difficult to apply. Therefore, it is necessary to design a new rapid construction technology.

[0003] Patent publication number CN111411794A discloses a masonry reinforcement layer, which is a coating layer formed on the surface of the masonry block by construction using ultra-high molecular weight polyethylene fiber-reinforced ultra-high ductility concrete. The masonry reinforcement layer uses ultra-high molecular weight polyethylene fiber-reinforced high ductility concrete as a continuous mortar layer on the outside of the block, and its thickness can be precisely controlled by continuous mortar application through manual labor, 3D printing, or rapid concrete spraying. However, the masonry reinforcement layer does not have a biomimetic insect elytra structure. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a lightweight core material template for a biomimetic insect elytra structure and a construction method. This template has the advantages of reduced cost, easy transportation, convenient size adjustment, and good seismic performance and structural quality.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] In one aspect, the present invention provides a lightweight core material template for a biomimetic insect elytra structure, comprising: a lightweight core material template having a plurality of holes arranged along the thickness direction;

[0007] The skin is located on the upper and lower surfaces of the lightweight core material template, and the skin has a biomimetic insect elytra structure that matches the holes.

[0008] Furthermore, the lightweight core material templates are connected by a mortise and tenon structure, which includes a connector perpendicular to one side of the hole and a groove on the other side, facilitating subsequent assembly.

[0009] Furthermore, the lightweight core material template is made of materials including foamed plastics, wood / bamboo / straw building materials, rubber, artificial honeycomb, etc. Among them, expanded polystyrene (EPS), which is commonly used, has a compressive yield strength >1.0MPa and an elastic modulus >5MPa, which is relatively lower than that of ultra-high performance concrete, and has a certain ability to recover from compression deformation.

[0010] Furthermore, the shape and size of the lightweight core material template can be determined according to the building structure design, load conditions, and assembly method. By using lightweight core material modular panels with different designs, various customized spaces can be created according to the building purpose and construction conditions.

[0011] Furthermore, the size and location of the holes should be arranged according to the actual working conditions. Circular holes or square openings can be selected, with a diameter or side length in the range of 50mm to 200mm and an area ratio of 10% to 20%. Their arrangement should take mechanical properties into consideration, simulating the hexagonal honeycomb wall structure of the core layer of an insect elytra, and arranged at the corresponding endpoints, distributed in a hexagonal pattern on the lightweight core material template to form a lightweight sandwich layered plywood structure containing a biomimetic insect elytra structure.

[0012] Furthermore, the material of the skin is ultra-high ductility concrete, including ultra-high molecular weight polyethylene fiber-reinforced ultra-high ductility concrete, or other concrete materials with a tensile deformation capacity greater than 6%, tensile strength of 10 MPa or more, flexural strength of 30 MPa or more, and compressive strength of 100 MPa or more. Because ultra-high ductility concrete has excellent tensile properties, steel mesh can be used to replace steel bars or even completely eliminate steel bars.

[0013] Furthermore, the biomimetic insect elytra structure is a columnar structure integrally formed with the skin and extending into the holes.

[0014] Furthermore, the thickness of the lightweight core material template is 80~180mm, the thickness of the skin is 10~30mm, and the thickness of the biomimetic insect elytra structure is the same as the thickness of the lightweight core material template.

[0015] Furthermore, the biomimetic insect elytra structure composite forms a biomimetic lightweight material, which can improve the structural load-bearing capacity while preventing the lightweight core material template from collapsing during the use of the building.

[0016] On the other hand, the present invention also provides a construction method for a biomimetic insect elytra structure with a lightweight core material template, comprising the following steps:

[0017] S1: Determine the macroscopic geometric features of the lightweight core material template;

[0018] S2: Determine the size and location distribution of the holes and tenon joints in the lightweight core material template;

[0019] S3: Prepare the lightweight core material template and assemble it;

[0020] S4: Prepare ultra-high ductility concrete and spray it onto the inner and outer surfaces of the lightweight core material template to a certain thickness, filling the holes of the lightweight core material template to form a biomimetic insect elytra structure;

[0021] S5: Curing the sprayed ultra-high ductility concrete and performing surface treatment to obtain a skin on the inner and outer surfaces of the lightweight core material template, thus completing the construction of the skinned lightweight core material template with the biomimetic insect elytra structure.

[0022] Furthermore, in step S1, the macroscopic geometric features of the lightweight core material template are customized according to the building purpose and construction conditions, and then designed and determined based on the biomimetic mechanism of insect elytra, combined with the building structure dimensions, load conditions and assembly methods.

[0023] Furthermore, in step S2, the size and location distribution of the holes and mortise and tenon structures are determined based on construction conditions, building structure dimensions, load conditions, and assembly methods, combined with the biomimetic design principles of insect elytra. The mortise and tenon structures are used to enhance overall integrity.

[0024] Furthermore, in step S4, the preparation process of the ultra-high ductility concrete adopts the preparation method provided by Chinese patent CN201911126835.9.

[0025] Furthermore, in step S5, the specific steps for curing the ultra-high ductility concrete are as follows: water curing begins 1-3 hours after spraying the concrete, and core samples are taken to test the strength after 25-30 days.

[0026] Furthermore, in step S5, the specific steps for surface treatment of the ultra-high ductility concrete are: plastering and applying decorative materials to the outer surface of the skin obtained on the inner and outer surfaces of the lightweight core material template.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] (1) Compared with the traditional extensive construction method, the present invention adopts a construction method of lightweight core material template assembly plus surface spraying skin, which has the advantages of energy saving and environmental protection, reducing labor costs and high degree of construction mechanization. At the same time, it can speed up the construction progress and shorten the construction period. The composite biomimetic insect elytra structure can improve the mechanical performance of the building.

[0029] (2) This invention uses prefabricated lightweight core material templates for assembly, combined with on-site surface spraying and skinning construction methods. Compared with traditional prefabricated building construction methods, this significantly reduces production and transportation costs. Furthermore, the lightweight core material templates are not limited in design, have lower production costs, are easy to adjust in size, and the resulting composite structure exhibits better overall integrity and superior seismic performance. The use of ultra-high ductility concrete spraying to form a double-sided skinning structure provides high toughness, high crack resistance, and high robustness, greatly improving the seismic performance and durability of the building.

[0030] (3) In this invention, the lightweight core material modules are connected by mortise and tenon joints, which enhances the overall integrity of the structure. At the same time, the reserved holes combined with the sprayed ultra-high ductility concrete form a biomimetic insect elytra structure, which improves the load-bearing capacity and avoids the relatively soft lightweight core material template from collapsing during daily use.

[0031] (4) This invention is easier to combine with automated intelligent construction methods such as robotic arms and put into use, which can greatly reduce the reliance on manual labor and is more suitable for construction in extreme conditions such as polar regions and deep space where human resources are insufficient in the future. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the lightweight core material template structure for the biomimetic insect elytra structure shown in Example 1;

[0033] Figure 2 This is a schematic diagram of the lightweight core material template structure shown in Example 1;

[0034] Figure 3 This is a schematic diagram of the skin structure shown in Example 1;

[0035] Figure 4 This is a schematic diagram of the mortise and tenon structure in the lightweight core material template shown in Example 1;

[0036] Figure 5 The house design floor plan shown in Example 1;

[0037] Figure 6 The left view of the house design shown in Example 1;

[0038] Figure 7 This is a front view of the house design shown in Example 1;

[0039] Figure 8 This is a schematic diagram of the assembly structure of the various templates for the house shown in Example 1;

[0040] Figure 9 This is a partial cross-sectional view of the house after construction, as shown in Example 1.

[0041] Explanation of markings in the diagram:

[0042] 1-Lightweight core material template, 101-Pore;

[0043] 2-Skin, 201-Bionic insect elytra structure;

[0044] 301 - Connector, 302 - Groove;

[0045] 401 - Curved top exterior wall module, 402 - Arched exterior wall module, 403 - Upper exterior wall module, 404 - Lower exterior wall module, 405 - Window sill module, 406 - Door top module. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. The embodiments are merely illustrative of the invention and are not intended to limit the invention. Any changes or modifications to the above examples based on the technical essence of the invention will fall within the scope of the claims of the present invention.

[0047] In the following embodiments, the ultra-high ductility concrete was prepared in the laboratory, referring to the preparation method provided by Chinese Patent CN201911126835.9; the EPS template had a compressive yield strength of 1.0~1.5MPa and an elastic modulus of 5~6MPa, and was purchased from Yancheng Hannuan Energy Saving Technology Co., Ltd.

[0048] Example 1

[0049] A biomimetic insect elytra structure with a lightweight core material template, such as... Figure 1 As shown, it includes:

[0050] A lightweight core material template 1 with several holes 101 arranged along the thickness direction (such as...) Figure 2 (as shown)

[0051] The skin 2 is located on the upper and lower surfaces of the lightweight core material template 1, and the skin 2 has a biomimetic insect elytra structure 201 that matches the holes 101 (such as...). Figure 3 (As shown).

[0052] In this embodiment, the interface of the lightweight core material template 1 needs to be treated, and a mortise and tenon structure is used to enhance its integrity, such as... Figure 4 As shown, the mortise and tenon structure includes a connector 301 perpendicular to one side of the hole 101 and a groove 302 on the other side, which facilitates subsequent assembly.

[0053] In this embodiment, the lightweight core material template 1 is made of EPS, which has a compressive yield strength of 1.0~1.5MPa and an elastic modulus of 5~6MPa, which is relatively low compared to ultra-high ductility concrete, and has a certain ability to recover from compression deformation. EPS material can ensure sufficient toughness when spraying ultra-high ductility concrete.

[0054] In this embodiment, the shape and size of the lightweight core material template 1 can be determined according to the design drawings. The size and position of the holes 101 should be based on the actual working conditions and mechanical properties, and should be arranged perpendicular to the template surface at the intersection of the template simulated honeycomb walls and at the center of the honeycomb, with a circular hole of radius of 9mm selected.

[0055] Specifically, to form a column structure at the intersection and center of the simulated hexagonal honeycomb wall, for the arc-shaped top outer wall module 401, a group of 5 holes 101 with a radius of 9mm perpendicular to the template surface are evenly arranged in the center, and a group of 3 holes 101 are inserted on both sides; for the arched outer wall module 402, a group of 7 holes 101 are evenly arranged in the center, and a group of 6 holes 101 are inserted on both sides; for the outer wall module, a group of 7 holes 101 are evenly arranged in the center, and a group of 8 holes 101 are inserted on both sides, extending horizontally along a height of 10mm below the windowsill. Divided into upper and lower parts, forming an upper exterior wall module 403 with 4 holes 101 evenly arranged in the center and 5 holes 101 inserted on both sides, and a lower exterior wall module 404 with 3 holes 101 evenly arranged in the center and 3 holes 101 inserted on both sides; an 80*85mm window is removed from one side of the upper exterior wall module 403 to form a window sill module 405, with the hole 101 distribution remaining unchanged; a 115*250mm doorway is removed from both the upper exterior wall module 403 and the lower exterior wall module 404 to form a door top module 406, with the hole 101 distribution remaining unchanged.

[0056] In this embodiment, the material of the skin 2 is ultra-high molecular weight polyethylene fiber-reinforced ultra-high ductility concrete, with a tensile deformation capacity greater than 6%; tensile strength exceeding 10 MPa; flexural strength of 30-50 MPa; and compressive strength of 100-200 MPa. Because ultra-high ductility concrete has excellent tensile properties, steel mesh can be used to replace steel bars or even completely eliminate steel bars.

[0057] In this embodiment, the biomimetic insect elytra structure is a columnar structure integrally formed with the skin 2 on the upper and lower surfaces and extending into the holes.

[0058] In this embodiment, the thickness of the lightweight core material template 1 is 120 mm, and the thickness of the skin 2 is 30 mm. The thickness of the biomimetic insect elytra structure 201 is the same as the thickness of the lightweight core material template 1.

[0059] In this embodiment, the biomimetic insect elytra structure 201 is composited to form a biomimetic lightweight material, which can improve the structural load-bearing capacity while preventing the lightweight core material template 1 from collapsing during the use of the building.

[0060] In this embodiment, a construction method for a lightweight core material template with a biomimetic insect elytra structure is also provided for house construction, including the following steps:

[0061] S1: Combine with the house design drawings, such as Figures 5-7 As shown, the dimensions and sizes of each module of the lightweight core material template 1 are designed, such as... Figure 6 The various modules are shown in the diagram;

[0062] S2: Based on the house design drawings and actual working conditions, design the geometric arrangement of prefabricated holes 101 on the lightweight core material template 1 with the designed dimensions and size, and design the mortise and tenon structure at the connection points, such as... Figure 5 As shown;

[0063] S3: Using rigid EPS foam that meets mechanical performance standards, prepare a lightweight core material template 1 with pre-fabricated holes 101 according to the design, transport it to the construction site, and assemble it, such as... Figure 8 As shown;

[0064] S4: Prepare ultra-high ductility concrete and spray it onto the inner and outer surfaces of the lightweight core material template 1 to a certain thickness, filling the holes 101 of the lightweight core material template 1 to form a biomimetic insect elytra structure 201;

[0065] S5: Curing and surface treatment of the sprayed ultra-high ductility concrete, obtaining the skin 2 on the inner and outer surfaces of the lightweight core material formwork 1, thus completing the construction of the biomimetic insect elytra structure skin lightweight core material formwork. The house construction is then complete. Figure 9 As shown.

[0066] In this embodiment, in step S1, the dimensions and size design of each module of the lightweight core material template 1 are specifically combined with the house design. Figure 5 The design is divided into an arc-shaped top exterior wall module 401 and an arched exterior wall module 402. Both can be divided into four groups according to symmetry, and each group should correspond to the same group. The arc-shaped top exterior wall module 401 divides the arc part of the top view into three parts evenly along the angle, and the lower exterior wall module 404 is divided through it. The lower exterior wall module 404 is divided into upper and lower parts horizontally along the height of 10mm below the windowsill.

[0067] In this embodiment, the specific steps for curing the ultra-high ductility concrete in step S5 are as follows: 2 hours after spraying the concrete, cover it with a film and spray water for curing, and 28 days later, take core samples to test the strength.

[0068] In this embodiment, the specific steps of the surface treatment of the ultra-high ductility concrete in step S5 are as follows: plastering and applying decorative materials to the outer surface of the skin 2 obtained on the inner and outer surfaces of the lightweight core material template 1.

[0069] Leveraging the ease of processing and transportation of lightweight core material template 1, this method employs prefabricated construction techniques. It designs and manufactures a lightweight core material panel structure, incorporating a biomimetic insect elytra structure 201. Holes are pre-drilled along the thickness of the lightweight core material template 1, and ultra-high ductility concrete is sprayed onto both the inner and outer sides of the template to create a composite skin 2. This forms a lightweight composite material with the biomimetic insect elytra structure 201, enabling rapid construction of a lightweight core material prefabricated biomimetic template with a surface skin 2. Compared to traditional extensive construction methods, this method offers advantages such as energy conservation and environmental protection, reduced labor costs, increased mechanization, faster construction progress, shorter construction period, and improved building quality. Furthermore, compared to traditional prefabricated building construction, it offers advantages such as lower costs, easier transportation, convenient size adjustment, and better seismic performance and structural quality. In addition, this method is more easily integrated with automated intelligent construction methods such as robotic arms, reducing reliance on manual labor.

[0070] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A construction method for a lightweight core material template with a biomimetic insect elytra structure, characterized in that, The lightweight core material template for the skin includes: A lightweight core material template (1) with a plurality of holes (101) arranged along the thickness direction, wherein the holes (101) are hexagonally distributed on the lightweight core material template (1); The skin (2) is located on the upper and lower surfaces of the lightweight core material template (1), and the skin (2) on the upper and lower surfaces has a biomimetic insect elytra structure (201) that matches the hole (101). The material of the skin (2) is ultra-high ductility concrete, which includes ultra-high molecular weight polyethylene fiber reinforced ultra-high ductility concrete, with a tensile deformation capacity greater than 6%, a tensile strength of more than 10 MPa, a flexural strength of more than 30 MPa, and a compressive strength of more than 100 MPa; the biomimetic insect elytra structure (201) is a columnar structure integrally formed with the skin (2) on the upper and lower surfaces and extending into the holes (101); The construction method of the lightweight core material formwork includes the following steps: S1: Determine the macroscopic geometric features of the lightweight core material template (1); S2: Determine the size and location distribution of the holes (101) and tenon structure of the lightweight core material template (1); S3: Prepare the lightweight core material template (1) and assemble it; S4: Prepare ultra-high ductility concrete and spray it onto the inner and outer surfaces of the lightweight core material template (1) to a certain thickness to fill the holes (101) of the lightweight core material template (1) to form a biomimetic insect elytra structure (201). S5: Curing the sprayed ultra-high ductility concrete and performing surface treatment, obtaining skin (2) on the inner and outer surfaces of the lightweight core material template (1), thus completing the construction of the skin lightweight core material template with biomimetic insect elytra structure.

2. The construction method of a lightweight core material template with a biomimetic insect elytra structure according to claim 1, characterized in that, The lightweight core material templates (1) are connected by a mortise and tenon structure, which includes a connector (301) perpendicular to one side of the hole (101) and a groove (302) on the other side.

3. The construction method of a lightweight core material template with a biomimetic insect elytra structure according to claim 1, characterized in that, The material of the lightweight core material template (1) includes foam plastic, wood / bamboo / straw building materials or rubber.

4. The construction method of a lightweight core material template with a biomimetic insect elytra structure according to claim 1, characterized in that, The thickness of the lightweight core material template (1) is 80~180mm, the thickness of the skin (2) is 10~30mm, and the thickness of the biomimetic insect elytra structure (201) is the same as the thickness of the lightweight core material template (1).

5. The construction method of a lightweight core material template with a biomimetic insect elytra structure according to claim 1, characterized in that, In step S1, the macroscopic geometric features of the lightweight core material template (1) are customized according to the building purpose and construction conditions, and then designed and determined based on the biomimetic mechanism of insect elytra, combined with the building structure dimensions, load conditions and assembly method.

6. The construction method of a lightweight core material template with a biomimetic insect elytra structure according to claim 1, characterized in that, In step S2, the size and location distribution of the holes (101) and mortise and tenon structures are determined based on the construction conditions, building structure dimensions, load conditions and assembly methods, combined with the biomimetic mechanism design of insect elytra.

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