Modular rigid-flexible hybrid structure construction method for lunar base and rigid-flexible hybrid structure

Abstract

The application discloses a kind of lunar base modular rigid-flexible hybrid structure construction method and rigid-flexible hybrid structure, construction method includes: on the flat site, using soil lunar soil block to build foundation and wall without formwork support;Between the foundation and wall built, place and fix flexible inflatable membrane, flexible inflatable membrane is inflated and unfolded as the construction of roof needing formwork support.The application proposes the structure form that internal flexible inflatable membrane and external rigid structure jointly act;Using the property that gravity on the moon is about one sixth of the earth, creatively proposes to use flexible inflatable membrane to control the construction method of rigid block assembly by pressurization and depressurization.The rigid-flexible hybrid structure system forms construction design integration, can maximize the advantages of in-situ construction, and construction procedure is simple, easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lunar in-situ construction, in particular to a modular rigid-flexible hybrid structure construction method for lunar base. BACKGROUND

[0002] With the development of human scientific and technological level, the exploration of the moon is also developing.

[0003] The lunar surface environment is quite different from the earth's environment, mainly in temperature, gravity field, radiation and meteoroid environment, weathering layer, moonquake, etc., and human understanding of the moon is limited, there may be other unknown adverse factors. The moon is a super vacuum, and humans cannot survive, so it is necessary to construct an atmospheric environment for human habitation buildings, and the inflatable membrane structure is an ideal structure scheme for pressure vessels, and the fiber composite membrane is a high-efficiency material considering material properties and transportation costs, so in recent years, composite material inflatable membrane structures have become effective tools for exploring outer space. However, the membrane structure has the problem of weak protection, and the ability to resist risks in the lunar environment is far inferior to rigid structures. The biggest problem of using rigid structures on the moon will be the immeasurable cost of transporting the moon and the earth, so how to use the resources of the moon to carry out in-situ construction activities has become a research hotspot.

[0004] At present, related research has proposed various structural forms of lunar base, including inflatable structures, concrete structures, metal structures, and tunnel structures under the lunar surface layer, all of which use single flexible structures or rigid structures. Flexible structures have the problem of weak protection, and poor risk resistance, while rigid structures will face the problem of huge transportation costs without the help of lunar in-situ construction technology, and cannot be directly applied to lunar base. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a modular rigid-flexible hybrid structure construction method for lunar base, which is cost-effective and easy to construct.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0007] A modular rigid-flexible hybrid structure construction method for lunar base, comprising the following steps:

[0008] On a flat site, use lunar soil blocks to build a foundation and walls without formwork support;

[0009] Place and fix a flexible inflatable membrane in the middle of the foundation and the wall, and the flexible inflatable membrane is expanded by inflation to build a roof that needs formwork support.

[0010] Placing and fixing a flexible inflatable film between the foundation and the wall, and unfolding the flexible inflatable film by inflation to build a roof requiring formwork support, comprising:

[0011] Placing and fixing a flexible inflatable film between the foundation and the wall;

[0012] Inflating the flexible inflatable film to control the pressure of the flexible inflatable film to meet the construction formwork support requirements;

[0013] Using the inflated flexible inflatable film as a formwork support to lay the circumferential blocks of the arched roof, so that a reliable connection is formed between the circumferential blocks and the flexible inflatable film structure;

[0014] After the circumferential blocks are laid, the flexible inflatable film is continuously inflated to expand the volume of the inflatable film; the flexible inflatable film after volume expansion increases the position of the top block reserved after the circumferential blocks are laid, and the top block is placed in the increased position of the top block;

[0015] After the top block is placed, the flexible inflatable film is deflated to reduce the volume of the inflatable film, so that the top block falls under the action of gravity and is embedded with the circumferential blocks; after the top block is embedded with the circumferential blocks, a reliable connection is formed between the top block and the flexible inflatable film structure.

[0016] The lunar soil block used for building the foundation and the wall is a first block; the first block has a mortise-tenon structure hole on one surface and a mortise-tenon structure column on the other surface; the first block has a mortise-tenon structure groove on one side and a mortise-tenon structure edge on the other side.

[0017] The lunar soil block used for laying the circumferential blocks of the arched roof is a second block and a third block; the second block has a mortise-tenon structure hole and a column arranged on each of the upper and lower surfaces; the left and right two sides are both flat surfaces; the third block has a mortise-tenon structure hole on one surface and a mortise-tenon structure column on the other surface; the left and right two sides are both flat surfaces.

[0018] The lunar soil block used for building the top block is a fourth block; the fourth block is circular, and a circle of mortise-tenon structure holes is arranged on the outer circumferential surface of the circular block.

[0019] The modular rigid-flexible hybrid structure construction method can give full play to the advantages of rigid and flexible structures, solves the problems of weak protection and poor risk resistance of membrane structures, and avoids the huge transportation cost of rigid structure materials by using the lunar in-situ construction technology.

[0020] The flexible inflatable membrane structure after construction can be used as a permanent formwork of the rigid structure composed of blocks, bears the load generated by the rigid structure, and can be used as a layer of enclosure structure of the internal space to enhance the sealing of the lunar base.

[0021] The lunar soil covered outside the rigid structure in the construction method can resist part of high-energy cosmic rays and solar flares, and can also weaken the impact of meteorite impact on the lunar base.

[0022] The beneficial effects of the present application are as follows:

[0023] (1) Modular rigid-flexible hybrid structure scheme. The membrane structure has the problem of weak protection, and poor risk resistance, and the rigid structure will face the problem of huge transportation cost without the help of lunar in-situ construction technology, and cannot be directly applied to the lunar base. The present application adopts a rigid-flexible hybrid structure, which can give full play to the advantages of rigid and flexible structures.

[0024] (2) Flexible inflatable membrane structure as permanent formwork of modular rigid structure. During construction, the flexible inflatable membrane can assist the installation and docking of the external rigid blocks by increasing and decreasing its pressure, which is simple and convenient to operate, and can bear the construction load together with the rigid structure; after construction, the flexible inflatable membrane can bear the external load transmitted by the rigid structure.

[0025] (3) Simple and convenient operation. The most advanced 3D in-situ printing technology for lunar soil is used, and reasonably sized blocks are designed for assembly. This avoids the need for large 3D printing equipment and ensures ease of installation. The internal flexible inflatable membrane structure serves as the construction template for the rigid structure during the construction phase. Both structures bear the construction load simultaneously during construction. After construction, the flexible inflatable membrane can be used to create a living environment. The external rigid structure can effectively reduce the impact of solar radiation and meteorite impacts on the interior of the base.

[0026] (4) Strong sealing performance. After installation, the flexible membrane structure participates in the construction of the human living environment, bears the internal air pressure load, can share the load of the rigid structure, and at the same time makes the lunar base have better sealing performance. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of the present invention.

[0028] Figure 2 This is a schematic diagram of a soil-formed block component of the present invention.

[0029] Figure 3 This is a schematic diagram of another soil-formed block component of the present invention.

[0030] Figure 4 This is a schematic diagram of another soil-formed block component of the present invention.

[0031] Figure 5 This is a schematic diagram of another lunar soil molding block component of the present invention.

[0032] Figure 6 This is a magnified view of part A in the attached diagram.

[0033] Figure 7 This is a schematic diagram of the inflatable membrane before pressurization during the implementation of this invention.

[0034] Figure 8 This is a schematic diagram of the inflatable membrane after pressurization during the implementation of the present invention.

[0035] Figure 9 This is a schematic diagram of the inflatable membrane after pressure reduction during the implementation of this invention.

[0036] Figure 10 This is a schematic diagram of the structural construction process of the present invention.

[0037] Reference numerals: 1-Lunar soil molding block component, 2-Flexible inflatable membrane, 3-Bolt, 4-Aluminum pressure plate, 5-Rubber gasket, 6-Nut. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0039] This invention discloses a construction method for a modular rigid-flexible hybrid structure for a lunar base. For example... Figure 1 As shown, the modular rigid-flexible hybrid lunar base proposed in this invention consists of three parts: an internal flexible inflatable membrane structure, an external rigid structure composed of block components, and connecting components. The internal flexible inflatable membrane structure is prefabricated in an Earth workshop using a composite material consisting of a high-strength fabric substrate and a polymer coating, and then transported to the lunar surface after folding and compression. The blocks are formed from in-situ resources on the lunar surface using sintering or melting techniques and are equipped with mortise and tenon joints. The connecting components are bolted clamps that connect the flexible inflatable membrane structure and the rigid structure.

[0040] like Figures 1 to 10 As shown, the construction method for a modular rigid-flexible hybrid structure for building a lunar base disclosed in this invention includes the following steps:

[0041] S1: Site leveling: The site of the proposed lunar base is leveled using a robotic arm.

[0042] S2: Component Preparation: Lunar soil was collected and prepared into lunar soil-formed block components using spark plasma sintering technology. The lunar soil-formed block component 1 includes a first block 11, a second block 12, a third block 13, and a fourth block 14, as shown below. Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, mortise and tenon structures are provided on the surfaces of adjacent blocks.

[0043] See first block 11. Figure 2 It includes six surfaces: a top surface, a bottom surface, a left side surface, a right side surface, an inner surface, and an outer surface. The inner and outer surfaces are curved surfaces, while the left and right surfaces are flat surfaces forming a slight angle with the radius of the arched roof. On the top and bottom surfaces, there is a mortise and tenon joint hole 111 and a mortise and tenon joint column 112. On the left and right sides, there is a mortise and tenon joint groove 113 and a mortise and tenon joint edge 114.

[0044] See the second block 12. Figure 3, including the upper surface, the lower surface, the left side, the right side, the inner surface and the outer surface of the six faces. In the upper and lower two surfaces have a mortise and tenon structure hole 121, two mortise and tenon structure column 122; two plane and two plane is a small angle with the position of the radius of the arch roof consistent. The second layer of the second block 12 is installed, the adjacent two column 122 of the adjacent two second block 12 of the upper layer is inserted into the hole 121 of the lower layer of the second block 12.

[0045] The third block 13 is shown in Figure 4 , including the upper surface, the lower surface, the left side, the right side, the inner surface and the outer surface of the six faces. In the upper and lower two surfaces have a mortise and tenon structure hole 131, a mortise and tenon structure column 132; two plane and two plane is a small angle with the position of the radius of the arch roof consistent.

[0046] The fourth block 14 is shown in Figure 5 , including the upper surface, the lower surface, the circumferential surface, a total of three faces. A circle of mortise and tenon structure hole 141 is arranged on the circumferential surface. The upper surface and the lower surface are spherical surface.

[0047] The hole and the column between each same block constitute a mortise and tenon structure through the connection of the hole and the column. The hole 111 of the upper surface of the first block 11 and the column 122 of the lower surface of the second block constitute a mortise and tenon structure. The column 122 of the upper surface of the second block 12 and the hole 131 on the lower surface of the third block 13 constitute a mortise and tenon structure, when the second block 12 and the third block 13 are connected, the adjacent column 122 of the two second blocks 12 is inserted into the hole 131 of the third block 13 together. The column 132 of the upper surface of the third block 13 and the hole 141 on the outer circumferential surface of the fourth block 14 constitute a mortise and tenon structure.

[0048] The first block 11 is used for the foundation and wall building. The second block 12 and the third block 13 are used for the building of the circumferential block of the arch roof, the outer two layers of the fourth block are the third block, and the rest are the second block. The fourth block 14 is used as the top block for the building of the top of the arch roof.

[0049] In order to meet the requirement of the air tightness of the flexible air inflation film, the bolt clamp connection is adopted between the block and the flexible air inflation film, and the embedded part of the bolt clamp connection is arranged on the surface of the block in contact with the flexible air inflation film, as shown in Figure 6 ;

[0050] S3: foundation and wall building: foundation pit excavation, and the laying of the first block 11 of the foundation and wall part, the first block 11 is shown in Figure 2 , and the mortise and tenon connection parts of the first block 11 are aligned and installed;

[0051] S4: air inflation film arrangement and inflation: placing the flexible air inflation film in the middle of the foundation and wall and fixing it through the bolt clamp, as shown inFigure 6 As shown, the flexible inflatable membrane is unfolded by inflation, and the pressure meets the basic requirements of the construction formwork support;

[0052] S5: Roof erection: use the robotic arm to hoist the second block 12, and start laying the arched roof second block 12 from all around, connect the mortise and tenon of the second block 12 with the first block 11, and align and install the mortise and tenon connection part of the second block 12. Lay the third block 13 on the basis of the second block 12 using the robotic arm, connect the mortise and tenon of the third block 13 with the second block 12, and align and install the mortise and tenon connection part of the third block 13. The second block 12 is as shown in Figure 3 The third block 13 is as shown in Figure 4 The second block 12 and the third block 13 are connected between the flexible inflatable membrane structure through a bolted plate, as shown in Figure 6 ;

[0053] S6: Inflatable membrane pressure increase: before the flexible inflatable membrane is pressurized, the mortise and tenon of the third block 13 is tightly connected, as shown in Figure 7 After the flexible inflatable membrane is pressurized, the volume of the inflatable membrane expands to cause a gap between the third blocks 13, and the pressure is continuously increased until the gap between the third blocks 13 meets the placement of the fourth block 14, as shown in Figure 8 ;

[0054] S7: Inflatable membrane pressure decrease: the fourth block 14 is as shown in Figure 5 After the fourth block 14 as the top block is placed, all the blocks are completed, at which time the pressure in the inflatable membrane structure is reduced, the volume of the inflatable membrane is reduced after the pressure is reduced, the fourth block 14 falls under the action of gravity, the mortise and tenon structure between the fourth block 14 and the third block 13 is automatically connected and generates a self-locking phenomenon, making the connection between the fourth block 14 and the third block 13 more tightly, and the flexible inflatable membrane stops decreasing pressure, as shown in Figure 9 ;

[0055] S8: Covering the lunar soil: after the structure construction is completed, the rigid structure composed of blocks is covered with lunar soil.

[0056] The construction is completed, and the lunar base is built.

[0057] In some embodiments, site leveling, lunar soil collection, block component preparation, foundation pit excavation, block erection, and lunar soil covering are all operated with the assistance of a robotic arm.

[0058] In some embodiments, the connection between the blocks is a mortise and tenon connection, the setting of the mortise and tenon is designed in advance through three-dimensional software, and is integrally prepared through sintering forming technology or melting forming technology, as shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 .

[0059] In some embodiments, the base is a rigid base formed by lunar soil shaped blocks.

[0060] In some embodiments, the flexible inflatable membrane is a composite material formed by a high-strength fabric substrate and a polymer coating, and is preformed in an Earth workshop, transported to the lunar surface in a folded and compressed state, and deployed using mechanical and inflation assistance.

[0061] In some embodiments, the connection between the flexible inflatable membrane structure and the rigid structure formed by the blocks is achieved by bolted cleats, as shown in Figure 5 It should be noted that the blocks need to be pre-buried with connecting bolts, and the flexible inflatable membrane needs to be pre-provided with bolt holes.

[0062] In some embodiments, the flexible inflatable membrane is pressurized by inflation, and the pressure after pressurization is within the load-bearing range of the inflatable membrane, and the increase in the volume of the flexible inflatable membrane causes a gap between the upper block members to be sufficient for the placement of the top block.

[0063] In some embodiments, the flexible inflatable membrane is depressurized by exhaust, and the depressurized flexible inflatable membrane can bear the load transmitted by the rigid structure formed by the blocks.

[0064] In some embodiments, the flexible inflatable membrane structure after construction can serve as a permanent formwork for the rigid structure formed by the blocks, bear the load generated by the rigid structure, and also serve as a layer of enclosure structure for the internal space, enhancing the sealing of the lunar base.

[0065] In some embodiments, the lunar soil covering the rigid structure can resist part of the high-energy cosmic rays and solar flares, and also weaken the impact of meteorite impacts on the lunar base.

[0066] The construction method of the present application adopts a modular rigid-flexible hybrid structure scheme. The membrane structure has the problem of weak protection and poor risk resistance, while the rigid structure will face the problem of huge transportation cost without the help of in-situ construction technology on the moon, and cannot be directly applied to the lunar base. The hybrid structure used in this project can fully utilize the advantages of rigid and flexible structures. According to the most advanced 3D in-situ printing lunar soil technology, reasonably sized blocks are designed for assembly, which can avoid the use of large 3D printing equipment and also consider the convenience of installation. Based on the property that the gravity on the moon is about one-sixth of that on Earth, the flexible inflatable membrane is pressurized and depressurized to control the construction method of the rigid block assembly, which is simple and convenient, making the rigid-flexible hybrid structure system form an integrated construction design, which can maximize the advantages of in-situ construction.

Claims

1. A construction method for a modular rigid-flexible hybrid structure for a lunar base, characterized in that, Includes the following steps: On a flat site, lunar soil blocks are used to build foundations and walls without the need for formwork support. A flexible inflatable membrane is placed and fixed between the foundation and the wall. The flexible inflatable membrane is inflated and unfolded to build the roof that requires template support. Specifically, this includes placing and fixing a flexible inflatable membrane between the foundation and the wall; The flexible inflatable membrane is inflated and unfolded, and the pressure of the flexible inflatable membrane is controlled to meet the requirements of the construction template support. Using the inflated flexible inflatable membrane as a template support, the circumferential blocks of the arched roof are laid, so that a reliable connection is formed between the circumferential blocks and the flexible inflatable membrane structure. After the circumferential blocks are laid, the flexible inflatable membrane is inflated to expand its volume. The expanded flexible inflatable membrane increases the space reserved for the top block after the circumferential blocks are laid. The top block is then placed in the increased space. After the top block is placed, the flexible inflatable membrane is deflated to reduce its volume, allowing the top block to fall under gravity and fit into the circumferential blocks; after the top block fits into the circumferential blocks, a reliable connection is formed between the top block and the flexible inflatable membrane structure. The lunar soil blocks used for foundation and wall construction are the first blocks; the first blocks have two surfaces, one surface with a mortise and tenon structure hole and the other surface with a mortise and tenon structure column; the first blocks have two sides, one side with a mortise and tenon structure groove and the other side with a mortise and tenon structure edge. The first type of lunar soil block used for circumferential block laying of arched roof is the second block; the second block has mortise and tenon structure holes and columns on each of the upper and lower surfaces, and is flat on the left and right sides; the columns on the lower surface of the second block and the holes of the first block form a mortise and tenon structure connecting the first block and the second block. The second type of lunar soil block used for circumferential block laying of arched roof is the third block; the third block has a hole with a mortise and tenon structure on one of its upper and lower surfaces, and a column with a mortise and tenon structure on the other surface, while the left and right surfaces are flat; the hole on the lower surface of the third block and the column on the upper surface of the second block form a mortise and tenon structure connecting the second block and the third block. The lunar soil block used for the construction of the top block is the fourth block; the fourth block is circular, and a ring of mortise and tenon holes is provided on the outer circumference of the circle; the holes on the outer circumference of the fourth block and the column on the upper surface of the third block form a mortise and tenon structure connecting the fourth block and the third block.

2. The construction method for a modular rigid-flexible hybrid structure for a lunar base according to claim 1, characterized in that, The method for fixing the flexible inflatable membrane to the foundation and walls is as follows: Bolts are pre-embedded in the first blocks of the foundation and walls; Insert the first pressure plate onto the pre-embedded bolts; Pass the flexible inflatable membrane through the pre-embedded bolts; Insert the second pressure plate onto the pre-embedded bolts that protrude from the flexible inflatable membrane; Install nuts on the pre-embedded bolts and tighten them.

3. The construction method for a modular rigid-flexible hybrid structure for a lunar base according to claim 2, characterized in that, Rubber gaskets are also fitted onto the pre-embedded bolts and are tightly attached to both sides of the flexible inflatable membrane.

4. A construction method for a modular rigid-flexible hybrid structure for a lunar base according to any one of claims 1-3, characterized in that, After the roof was built, lunar soil was covered on the outside of the rigid structure composed of lunar soil blocks.

5. A modular rigid-flexible hybrid structure for a lunar base, characterized in that: The lunar base is constructed using the modular rigid-flexible hybrid structure construction method described in any one of claims 1-4.

Images