A method for simulating the construction of a Martian building using in-situ resources on Mars

Abstract

The present invention relates to the technical field of construction methods, and in particular to a method for simulating the construction of a Martian building using in-situ resources on Mars. The method includes mixing simulated Martian soil with water ice, filling the mixture into a mold, applying strong pressure to melt the ice and drive the hydration reaction, and curing to form Martian bricks with a compressive strength of up to 21.7 MPa. After high-temperature curing treatment, the compressive strength can reach up to 44.5 MPa. At the same time, molten sulfur and Martian soil are mixed to make Martian mortar, and the bond strength is optimized to 2.0 MPa through interface incision treatment. The present invention utilizes in-situ resources on Mars, separates the prefabrication and construction of components, significantly reduces energy consumption and transportation costs, and improves construction efficiency and environmental adaptability. Numerical models of compressive strength are established for the mechanical properties under different conditions, providing reliable technical support for Martian buildings. This method is applicable to the construction of sustainable buildings in extreme environments and has important application value for deep space exploration.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction methods, and in particular, to a method for simulating the preparation of building materials based on in-situ resources on Mars and constructing a Mars building. Background Art

[0002] With the continuous advancement of human deep space exploration, Mars has become the most realistic extraterrestrial immigration target due to its similar diurnal cycle, geological structure characteristics, and potential resources to those of the Earth. The Zhurong Mars rover discovered multiple layers of inclined sedimentary structures in Utopia Planitia through a subsurface penetrating radar. Its geological characteristics are highly consistent with those of Earth's coastal sediments, providing direct evidence for the existence of a paleo-ocean in the mid-latitudes and low-latitudes of Mars for the first time. This breakthrough discovery further strengthens the scientific value of Mars as an object of extraterrestrial survival research. However, the extreme environment on Mars poses severe challenges to construction technology. The average surface pressure on Mars is only 0.6% of that on Earth, the diurnal temperature difference is as high as 160°C, the cosmic radiation intensity is more than 200 times that on Earth, and resource limitations such as a lack of liquid water are significant. Traditional concrete technology relies on liquid water for hydration reactions, and the low-pressure environment on Mars causes water to directly sublimate, making it difficult to meet the requirements of traditional processes. In addition, the Martian regolith consists of 7%-12% sulfides and 40%-50% SiO2. This unique material property lays a key foundation for the development of new building technologies that simulate in-situ resource utilization, but also poses higher requirements for material durability and construction feasibility.

[0003] The current technical paths show a trend of polarization: Technologies that simulate the improvement of Earth materials (such as 3D printing lunar regolith concrete) are difficult to support large-scale construction due to their dependence on external supplies; while in-situ resource utilization (ISRU) technologies, although significantly reducing transportation costs through a molten sulfur bonding mechanism, still lack systematic verification in terms of material durability, structural reliability, and construction feasibility in extreme environments. Existing research mostly focuses on the optimization of single material properties, and there is still a blank in the research on the structural failure mechanism under the action of a composite stress field (negative pressure, radiation, temperature cycle). In addition, as an emerging construction method, 3D printing technology can process materials layer by layer, but it requires a flat site, ground treatment, and continuous construction, and has problems such as high processing costs, low manufacturing accuracy, and high energy consumption. The one-time supply of materials also limits the size of the building space. Summary of the Invention

[0004] In view of the problems in the construction of Mars building structures in the prior art, such as strong material dependence, low construction efficiency, and insufficient environmental adaptability, the present invention proposes a construction method for simulating in-situ resources on Mars to prepare Mars bricks and Mars mortar and build building structures. The method prepares Mars bricks by utilizing the hydration reaction of Mars soil and water-ice mixture under high pressure, combines molten sulfur and simulated Mars soil to prepare Mars mortar, and improves the bonding strength through interface optimization treatment, ultimately realizing the intelligent construction of building structures.

[0005] The present invention adopts the following scheme:

[0006] A method for simulating the construction of Mars buildings based on in-situ resources on Mars, using a pressure mold to prepare Mars bricks as building materials. The pressure mold includes a base, a number of threaded power rods connected to the base, and an outer mold suitable for filling materials. It also includes a punch head suitable for extending into the outer mold to press the materials. The punch head is connected to an upper pressure plate suitable for connecting to a press. A number of through holes suitable for the power rods to pass through are provided on the upper pressure plate, and adjusting nuts are provided on the power rods below the upper pressure plate. The method includes the following steps:

[0007] S1. Loading: Fill the cavity of the outer mold with simulated Mars soil and water ice.

[0008] S2. Assembly: After loading, extend the punch head into the outer mold, pass the power rods through the holes on the upper pressure plate, and at the same time screw in the locking nuts above the upper pressure plate.

[0009] S3. Pressurization: The pressure head of the press contacts the upper surface of the upper pressure plate and applies pressure downward on the upper pressure plate, driving the punch head connected to the upper pressure plate to move downward along the power rods, transmitting the pressure to the filling materials in the outer mold.

[0010] S4. Curing: After reaching the predetermined pressure, tighten the adjusting nuts upward and the locking nuts downward to fix the upper pressure plate at the corresponding position on the power rods, then remove the pressure mold from the press and let it stand for curing.

[0011] S5. Preparing Mars mortar: Put sulfur and simulated Mars soil into a magnetic stirrer, heat and stir thoroughly.

[0012] S6. Construction: Take out the Mars bricks cured and formed in step S4, and use the Mars bricks and the Mars mortar prepared in step S5 to build the Mars building structure.

[0013] Further, the simulated Mars soil is at least one of JSC Mars-1, JMSS-1, MGS-1, MMS-1, and JEZ-1.

[0014] Further, in step S4, the pressure applied by the press on the upper platen ranges from 20 MPa to 60 MPa.

[0015] Further, during the construction in step S6, make a single-character incision or a cross incision at the connection interface of the Martian bricks.

[0016] Further, the mass ratio of the simulated Martian soil to sulfur is 0:1 to 1:4, and the heating temperature is 140 °C.

[0017] Further, the mass ratio of water ice to the simulated Martian soil is 1:3 to 7:13.

[0018] Further, establish a numerical model for the compressive strength of Martian bricks in relation to the curing age, forming pressure, temperature, moisture content, and SiO2 particle size conditions:

[0019] Under the conditions of 1 standard atmospheric pressure, room temperature of 20 °C, moisture content of 35%, SiO2 particle size of 1 μm, and different curing ages, the compressive strength formula is:

[0020] ;(1)

[0021] Where f u is the compressive strength; D is the age;

[0022] Under the conditions of a curing age of 7 days, room temperature of 20 °C, moisture content of 35%, SiO2 particle size of 1 μm, and different forming pressures, the compressive strength formula is:

[0023] ;(2)

[0024] ;(3)

[0025] ;(4)

[0026] ;(5)

[0027] Where f u is the compressive strength, equal to the ultimate compressive strength f u_c ; P is the forming pressure; ε 0 is the peak strain; E c is the elastic modulus; is the stress, is the strain;

[0028] Under the conditions of a curing age of 7 days, a room temperature of 20 °C, a water content of 35%, a forming pressure of 40 MPa, and different SiO2 particle sizes, its compressive strength formula is:

[0029] ; (6)

[0030] Among them, f u is the compressive strength; Eq (2) is formula (2);

[0031] Under the conditions of a curing age of 7 days, a water content of 35%, a forming pressure of 40 MPa, a SiO2 particle size of 200 nm, and different temperature treatments, its compressive strength formula is:

[0032] ; (7)

[0033] Among them, f u is the compressive strength; Eq (6) is formula (6), T is the treatment temperature;

[0034] Under the conditions of a curing age of 7 days, a room temperature of 20 °C, a forming pressure of 40 MPa, a SiO2 particle size of 200 nm, and different water contents, its compressive strength formula is:

[0035] ; (8)

[0036] Among them, f u is the compressive strength; Eq (7) is formula (7), ω is the water content.

[0037] Furthermore, JSC Mars-1 is used to simulate the preparation of Martian bricks under the conditions of a forming pressure of 40 MPa, an environmental temperature of 20 °C, a raw material with a SiO2 particle size of 200 nm, and a water content of 35%.

[0038] Furthermore, in step S6, intelligent construction technology is adopted to mason the Martian bricks to form a Martian building.

[0039] Beneficial effects:

[0040] The technical solution of the present invention realizes the following innovation points:

[0041] In-situ resource utilization: Make full use of Martian soil and water ice, without relying on Earth supplies, significantly reducing transportation costs.

[0042] Efficient construction: Separating the prefabrication of components from the construction process improves flexibility and efficiency, suitable for large-scale building construction.

[0043] Low energy consumption: Through high-pressure forming technology and interface optimization, significantly reduce energy consumption to meet the requirements of extreme environments.

[0044] High adaptability: Suitable for a variety of simulated Martian soils, capable of achieving reliable performance under different particle sizes and environmental conditions.

[0045] Reliable performance: Through experimental verification and mathematical modeling, ensure the stability of materials under different conditions, providing technical support for deep space exploration.

[0046] Through the above technical solutions, the sustainable construction of Martian building structures has been achieved. The method breaks through the limitations of traditional 3D printing technology, utilizes in-situ resources on Mars to achieve the construction of low-energy-consuming and highly adaptable building structures, and has important application value for deep space exploration. In the future, by further optimizing process parameters and expanding application scenarios, it can promote the long-term residence of humans on Mars and other extraterrestrial planets and infrastructure construction. Description of the Drawings

[0047] Figure 1 is a three-dimensional schematic diagram of a pressure mold for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0048] Figure 2 is a side schematic diagram of a pressure mold for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0049] Figure 3 is a side schematic diagram of another pressure mold for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0050] Figure 4 is a top schematic diagram of a pressure mold for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0051] Figure 5 is the preparation process of Martian bricks for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0052] Figure 6 is the preparation process of Martian mortar for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0053] Figure 7 is the test curve graph of different material groups of Martian bricks for a method of simulating the construction of a Martian building based on in-situ resources on Mars in an embodiment of the present invention;

[0054] Figure 8 It is the test curve graph of different age groups of Martian bricks in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention;

[0055] Figure 9 It is the test curve graph of different forming pressure groups of Martian bricks in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention;

[0056] Figure 10 It is the test curve graph of different particle size groups of Martian bricks in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention;

[0057] Figure 11 It is the test curve graph of different temperature groups of Martian bricks in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention;

[0058] Figure 12 It is the test curve graph of different water content groups of Martian bricks in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention;

[0059] Figure 13 It is the schematic diagram of different interface incision types and the test loading diagram in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention;

[0060] Figure 14 It is the test schematic diagram of different interface incision shapes in a method for simulating the construction of Martian buildings based on in-situ resources on Mars according to an embodiment of the present invention.

[0061] Reference numerals: base 1, fixing nut 2, outer mold 3, power rod 4, adjusting nut 5, punching head 6, upper pressing plate 7, gasket 8, locking nut 9, bolt 10. Detailed implementation manners

[0062] Embodiment 1

[0063] Combined with Figures 1 to 14 As shown, this embodiment provides a method for simulating the construction of Martian buildings based on in-situ resources on Mars. Pressure molds are used to prepare Martian bricks as building materials. The pressure molds include a base 1, a plurality of threaded power rods 4 connected to the base 1, and an outer mold 3 suitable for filling materials. It also includes a punching head 6 suitable for extending into the outer mold 3 to punch materials. The punching head 6 is connected with an upper pressing plate 7 suitable for connecting to a press. A plurality of through holes suitable for the power rods 4 to pass through are provided on the upper pressing plate 7, and an adjusting nut 5 is provided on the power rod below the upper pressing plate 7; The method includes the following steps:

[0064] S1. Filling: Fill the simulated Martian soil and water ice into the cavity of the outer mold 3, wherein the simulated Martian soil can be at least one of the existing JSC Mars-1, JMSS-1, MGS-1, MMS-1, JEZ-1, and real Martian soil that can be used in the future; the mass ratio of water ice to simulated Martian soil is 1:3~7:13, preferably 7:13, which can ensure a certain strength while having good operability / machinability. The filling density can be adjusted according to actual needs to control the final material properties; the water ice is used as the water source for the hydration reaction, and is converted into liquid water through high pressure to drive the hydration reaction.

[0065] S2, assembly: After filling, insert the punch head 6 into the outer mold 3, pass the power rod 4 through the hole on the upper platen 7, and screw the locking nut 9 on the upper platen 7; raise the position of the adjusting nut 5 in the middle of the power rod 4 to a certain distance for position limiting protection to ensure the stability of the device during the pressure application process. The power rod 4 adopts a spiral steel bar structure with high strength and good pressure transmission ability.

[0066] S3. Pressurization: The ram of the press contacts the upper surface of the upper platen 7 and applies downward pressure to the upper platen 7, driving the punch head 6 connected to the upper platen 7 to move downward along the power rod 4, and transmitting the pressure to the filling material in the outer mold 3; set the corresponding loading system and molding pressure according to the material properties to ensure that the material is fully compacted.

[0067] S4, curing: after reaching the predetermined pressure, tighten the adjusting nut 5 upwards, tighten the locking nut 9 downwards to fix the upper pressing plate 7 at the corresponding position of the power rod, and then remove the pressure mold from the press and let it stand for curing; the pressure range of the press on the upper pressing plate 7 is 20MPa-60MPa, preferably 40MPa, to achieve the maximum densification effect of the material. Under high pressure, ice can melt into liquid water to drive the hydration reaction. After standing and curing, take out the mold to realize flow manufacturing. The curing process ensures that the hydration reaction is fully completed by maintaining constant pressure and temperature conditions; after curing, a Mars brick with a compressive strength of 21.7MPa can be formed;

[0068] S5. Prepare Martian mortar: put sulfur and simulated Martian soil into a magnetic stirrer, heat and stir thoroughly; the mass ratio of simulated Martian soil to sulfur is 0:1 to 1:4, preferably 1:4; the heating temperature is 140°C;

[0069] S6. Construction: Take out the Mars bricks cured and formed in step S4, and use the Mars bricks and the Mars mortar prepared in step S5 to build the Mars building structure. Complete the masonry of the Mars building structure with Mars bricks and Mars mortar in combination with intelligent construction technology; intelligent construction technology includes existing robotic arm automatic masonry and modular assembly solutions, significantly improving construction efficiency and accuracy. For example, the robotic arm can achieve rapid positioning of Mars bricks and mortar components through precise control, and the modular assembly solution allows prefabricated components to be flexibly assembled on site, reducing dependence on environmental conditions. In addition, since less sulfur mortar is exposed in the Mars building structure, the impact of sulfur sublimation on the structure can be effectively reduced, further extending the service life of the building.

[0070] It should be noted that during masonry, notch treatment can be performed on the interface of the Mars bricks. By optimizing the interface notch treatment (such as a single-notch or cross-notch), the bonding strength can be increased to 2.0 MPa, which can reduce the impact of sulfur sublimation on the structure.

[0071] Through the process method of this embodiment, it can be applied to the construction of future Mars building structures. The Mars bricks can be made using different simulated Mars soils and future real Mars soils, and the Mars mortar can also be made by thermally mixing different simulated Mars soils with sulfur. The expected hydration process based on compaction is expected to allow for a wider use of Mars soils, regardless of particle size, to further simplify the construction process and have a wide range of applicability.

[0072] The simulated Mars soil contains , , , , , and other compounds. When preparing the Mars mortar, the simulated Mars soil includes , , , and other components. Sulfur is first heated and melted at 140 °C, then the simulated Mars soil is added and stirred thoroughly, and finally heated at 140 °C in an oven. The sulfur melts under heating conditions and is uniformly mixed with the simulated Mars soil to form a Mars mortar with good bonding performance.

[0073] In this embodiment, the pressure mold includes a base 1, and also includes an outer mold 3 for placing materials, a power rod (made of spiral steel bars) 4, a punching head 6, an upper pressing plate 7, a gasket 8 arranged between the locking nut 9 and the upper pressing plate 7, a fixing nut for fixing the power rod 4 on the base 1, an adjusting nut 5 arranged below the upper pressing plate 7, and a locking nut 9 arranged above the upper pressing plate. The locking nut 9 is locked onto the upper part of the power rod 4 after the upper pressing plate 7 is sleeved onto the power rod 4. The base 1 includes two schemes. The first one (Figure 2 ): The power rod 4 is fixedly connected to the base 1 and reinforced by the fixing nut 2 above the base 1; the second type ( Figure 3 ): The power rod 4 is connected to the base 1 through the fixing nut 2 below the base 1. Bolts 10 can be provided on the upper pressure plate 7 for connection to a press. The pressure die has a simple and practical structure, is convenient to manufacture and has a wide range of application scenarios; different-shaped martian bricks can also be formed by changing the inner cavity shape of the outer mold 3.

[0074] The method of this embodiment takes compression and heat treatment as the main processes, because compared with the complex 3D printing or sintering technologies currently studied, they require relatively simple equipment.

[0075] Nanomaterials are abundant in martian soil simulants, such as the martian soil simulant JSC Mars-1a. When nanoparticles of iron oxides and hydroxides with a large specific surface area come into contact and are compacted, the required chemical bonding can be achieved. The material compaction process will provide the required pressure to melt ice into liquid water, so that the mixture can be properly hydrated to form structural elements. In addition, liquid water can bond the aggregates together through capillary tension and interparticle attraction. At the same time, under the action of liquid water, compacting the aggregate mixture also helps to reorient the aggregate particles to a denser state and make them contact more closely, so that the structural elements generate stronger bonding forces. The hydration process based on compaction is expected to allow for a wider use of martian soil, regardless of particle size, to further simplify the construction process. For example, designing special Lego-shaped components to achieve the required mortise and tenon mechanism will further simplify the printing process by minimizing the need for mortar to bond the bricks. This indicates that the construction process is faster and more suitable for the martian atmosphere. A small amount of sulfur can also be melted as "mortar" to bond martian bricks. Compared with existing sulfur concrete technologies, the lower sulfur consumption will require less energy for melting, have stronger frost and thaw resistance and sublimation resistance, and less exposure.

[0076] Embodiment 2

[0077] This embodiment provides a method for simulating the construction of martian buildings based on in-situ resources on Mars, and establishing a numerical model for the compressive strength of martian bricks in relation to curing age, forming pressure, temperature, moisture content, and SiO2 particle size conditions:

[0078] Under the conditions of 1 standard atmospheric pressure, room temperature of 20 °C, moisture content of 35%, SiO2 particle size of 1 um, and different curing ages, the compressive strength formula is:

[0079] ;(1)

[0080] Where f u is the compressive strength;D is the age of curing;

[0081] Under the conditions of a curing age of 7 days, a room temperature of 20 °C, a water content of 35%, an SiO2 particle size of 1 μm, and different forming pressures, its compressive strength formula is:

[0082] ; (2)

[0083] ; (3)

[0084] ; (4)

[0085] ; (5)

[0086] Where f u is the compressive strength, equal to the ultimate compressive strength f u_c ; P is the forming pressure; ε 0 is the peak strain; E c is the elastic modulus; is the stress, is the strain.

[0087] Under the conditions of a curing age of 7 days, a room temperature of 20 °C, a water content of 35%, a forming pressure of 40 MPa, and different SiO2 particle sizes, its compressive strength formula is:

[0088] ; (6)

[0089] Wherein, f u is the compressive strength; Eq (2) is formula (2);

[0090] Under the conditions of a curing age of 7 days, a water content of 35%, a forming pressure of 40 MPa, an SiO2 particle size of 200 nm, and different temperature treatments, its compressive strength formula is:

[0091] ; (7)

[0092] Wherein, f u is the compressive strength; Eq (6) is formula (6), T is the treatment temperature;

[0093] Under the conditions of a curing age of 7 days, a room temperature of 20 °C, a forming pressure of 40 MPa, a SiO2 particle size of 200 nm, and different water contents, its compressive strength formula is:

[0094] ;(8)

[0095] wherein, f u is the compressive strength; Eq (7) is formula (7), ω is the water content;

[0096] According to the above numerical model, under the given corresponding conditions, different compressive strength Martian bricks can be obtained by controlling the single numerical changes of the curing age, forming pressure, temperature, water content, and SiO2 particle size parameters, and vice versa. For example, under the conditions of a given curing age of 7 days, a room temperature of 20 °C, a forming pressure of 40 MPa, and a SiO2 particle size of 200 nm, different water contents can be controlled to obtain Martian bricks with different compressive strengths.

[0097] Example 3

[0098] In this example, JSC Mars-1 simulated Martian soil was used to prepare Martian bricks and Martian mortar by simulating the method of building Martian buildings based on in-situ resources on Mars under the conditions of a forming pressure of 40 MPa, an environmental temperature of 20 °C, a raw material with a SiO2 particle size of 200 nm, and a water content of 35%. The bond strength was optimized through three interface treatment processes (no cut, single cut, cross cut). Through Figures 10 - 11 As shown, the compressive strength of the precast brick body under these conditions was approximately 21.7 MPa, and after high-temperature curing treatment at 1000 °C, the compressive strength could reach up to 44.5 MPa.

[0099] Verification was carried out through the following method:

[0100] As Figure 13 , first, two cubic specimens were bonded with a sulfur-based binder of molten sulfur. After the specimens were fully bonded, two long iron blocks were fixed on both sides of the specimens with epoxy resin glue. The span between the two loading points was 34 mm, and the distance from the support point to the nearest loading point was 33 mm. A displacement rate of 0.006 mm / min was applied to the sample, and the load and displacement data were collected by an internal force sensor and an LVDT system respectively.

[0101] Test data ( Figure 14It shows that: for the specimen without notch, failure occurred due to interface debonding, and the average bond strength was only 1.0 MPa; while for the specimens with single-notch and cross-notch treatments, the failure mode was the fracture of the brick body itself, indicating that the interface bond strength had exceeded the strength limit of the material itself. The average bond strengths of the single-notch and cross-notch treatments were increased to 2.0 MPa and 1.6 MPa respectively, and the strengthening mechanism may be due to the mechanical interlocking effect of the interface.

[0102] Based on the comprehensive Figure 14 data, since the single-notch is convenient to prepare and its bond strength exceeds 2.0 MPa, it becomes the preferred solution, providing an important basis for optimizing the bond performance of structural materials through interface treatment technology.

[0103] Through the solution of this embodiment, the sustainable construction of the Mars building structure is realized. The method breaks through the limitations of traditional 3D printing technology, uses in-situ resources on Mars to achieve the construction of building structures with low energy consumption and high adaptability, and has important application value for deep space exploration. In the future, by further optimizing process parameters and expanding application scenarios, it will contribute to promoting the long-term residence and infrastructure construction of humans on Mars and other extraterrestrial planets.

[0104] It should be understood that: the above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention.

[0105] The introduction of the drawings used in the above embodiments only shows some embodiments of the present invention and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

Claims

1. A method for simulating the construction of a Martian building using in-situ resources on Mars, characterized in that, A pressure mold is used to prepare Mars bricks as building materials, wherein the pressure mold includes a base, a plurality of threaded power rods connected to the base, and an outer mold suitable for filling materials, and also includes a punch head suitable for extending into the outer mold to punch the material, the punch head is connected to an upper pressing plate suitable for connecting to a press, the upper pressing plate is provided with a plurality of through holes suitable for the power rods to pass through, and the power rod is provided with an adjusting nut located below the upper pressing plate; the steps include: S1. Filling: Filling the simulated Martian soil and water ice into the cavity of the outer mold; S2. Assembly: After the filling is completed, the punch head is inserted into the outer mold, so that the power rod passes through the hole on the upper pressing plate, and the locking nut is screwed into the upper part of the upper pressing plate; S3, pressurization: The pressure head of the press machine contacts the upper surface of the upper platen and applies downward pressure to the upper platen, driving the punch head connected to the upper platen to move downward along the power rod, and transmitting the pressure to the filling material in the outer mold; S4. Curing: After reaching the predetermined pressure, tighten the adjusting nut upwards and tighten the locking nut downwards to fix the upper pressing plate at the corresponding position of the power rod, then remove the pressure die from the press and let it stand for curing; S5. Prepare Martian mortar: put sulfur and simulated Martian soil into a magnetic stirrer, heat and stir thoroughly; S6. Construction: Take out the Martian bricks cured and formed in step S4, and use the Martian bricks and the Martian mortar prepared in step S5 to build the Martian building structure.

2. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, characterized in that, The simulated Martian soil is at least one of JSC Mars-1, JMSS-1, MGS-1, MMS-1, and JEZ-1.

3. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, wherein In step S4, the pressure applied by the press to the upper platen is in the range of 20MPa-60MPa.

4. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, characterized in that, During construction in step S6, a straight cut or a cross cut is made on the model layer at the connection interface of the Mars bricks.

5. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, characterized in that, The mass ratio of simulated Martian soil and sulfur is 0:1~1:4, and the heating temperature is 140℃.

6. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, wherein The mass ratio of water ice and simulated Martian soil is 1:3~7:

13.

7. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, characterized in that, A numerical model of the compressive strength of Mars bricks and the curing age, molding pressure, temperature, moisture content, and SiO2 particle size conditions was established: Under the conditions of 1 standard atmospheric pressure, room temperature of 20℃, moisture content of 35%, SiO2 particle size of 1um, and different curing ages, the compressive strength formula is: ；(1) Among them, f u is the compressive strength; D is the age; Under the conditions of curing age of 7 days, room temperature of 20℃, moisture content of 35%, SiO2 particle size of 1um and different molding pressures, the compressive strength formula is: ；(2) ；(3) ；(4) ；(5) wherein f u equals the ultimate compressive strength f u_c ; P is the forming pressure; ε 0 is the peak strain; E c is the elastic modulus; is the stress, is the strain; Under the conditions of curing age of 7 days, room temperature of 20℃, moisture content of 35%, molding pressure of 40MPa and different SiO2 particle sizes, the compressive strength formula is: ；(6) Among them, Eq (2) is formula (2); Under the conditions of curing age of 7 days, moisture content of 35%, molding pressure of 40MPa, SiO2 particle size of 200nm and different temperature treatment conditions, the compressive strength formula is: ；(7) Among them, Eq (6) is formula (6), T is the processing temperature; Under the conditions of curing age of 7 days, room temperature of 20℃, molding pressure of 40MPa, SiO2 particle size of 200nm and different moisture contents, the compressive strength formula is: ；(8) Among them, Eq (7) is formula (7), ω is the moisture content.

8. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, characterized in that, Prepare Martian bricks using JSC Mars-1 simulated Martian soil under the conditions of a forming pressure of 40 MPa, an environmental temperature of 20 °C, a raw material with a SiO2 particle size of 200 nm, and a water content of 35%.

9. The method for simulating the construction of a Martian building based on in-situ resources on Mars according to claim 1, wherein, In step S6, use intelligent construction technology to lay the Martian bricks to form a Martian building.

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