Fabricated farm house system and design method thereof

Abstract

The application discloses an assembled farm house system and a design method thereof, which comprises a house main body, a functional prefabricated module and a modular connecting device. The house main body comprises a first prefabricated component with a reserved first connecting part and a spliced floor. The spliced floor is formed by horizontally splicing a plurality of second prefabricated components. The second prefabricated components have reserved second connecting parts. The first prefabricated component and the second prefabricated components are fixed to each other through an assembled connecting structure. The first prefabricated component has a plurality of predefined assembly areas. The modular connecting device is arranged between the assembly areas of the first prefabricated component and the functional prefabricated module in a pre-buried or external manner. The functional prefabricated module is configured to be selectively installed in different assembly areas of the first prefabricated component according to design requirements. The problems that the existing assembled farm house is difficult to ensure construction efficiency and structural integrity while considering design flexibility and transportation convenience are solved.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a prefabricated rural housing system and its design method. Background Technology

[0002] In recent years, with the continuous development of the rural economy, farmers' demands for housing quality have been increasing. At the same time, the shortage of rural labor has gradually emerged, and traditional rural housing construction methods face challenges such as labor shortages and low construction efficiency. Prefabricated rural housing technology can precisely solve these problems and meet the new demands of rural housing construction. Prefabricated rural housing is a new type of rural housing construction model in which some or all of the housing components are prefabricated in a factory and then transported to the construction site for assembly and installation. This model changes the traditional decentralized, manual construction method of rural housing, realizing the standardization, industrialization, and prefabrication of rural housing construction.

[0003] Existing prefabricated rural housing systems are mainly divided into panel-based systems and modular systems, with panel-based systems offering significant advantages. Firstly, they offer excellent flexibility in size and specifications, allowing for customization to meet diverse rural housing design needs and adapting to various house types and architectural styles, thus fully satisfying farmers' individual requirements. Secondly, individual prefabricated panel components are small in size and lightweight, facilitating transportation and unloading, even in rural areas with poor transportation conditions, allowing for smooth delivery to the construction site. Thirdly, the on-site assembly process is relatively simple, making it easy for construction workers to master the assembly techniques, and requiring less sophisticated equipment; small hoisting equipment is generally sufficient, effectively reducing construction costs. However, in practical applications, panel-based systems also reveal some drawbacks. On the one hand, although the components are prefabricated, on-site splicing and connection work is extensive, encompassing connections between wall panels and between wall panels and floor slabs, as well as the treatment of various gaps. This not only consumes a lot of manpower but also requires a considerable amount of time, resulting in lower construction efficiency compared to modular systems. On the other hand, in terms of the overall structural integrity of the building, the panel-assembled system is slightly inferior to the modular system. Because it involves assembling individual panel components first to form the overall structure, weak points are more likely to appear at the joints, which can negatively impact the building's seismic performance and other aspects.

[0004] The modular system also boasts several advantages. First, most of the construction work, including structural assembly, decoration, and equipment installation, is completed in the factory. On-site construction only requires module assembly, significantly shortening construction time, reducing workload, and enabling rapid construction of farmhouses, thus greatly improving construction efficiency. Second, the modules are manufactured as a single structure in the factory, possessing high strength and stability. After on-site assembly, reliable connection methods ensure excellent overall performance, resulting in superior earthquake and wind resistance. Furthermore, the standardized production processes and quality control systems employed in the factory guarantee consistent module quality, reducing the impact of human factors on quality during on-site construction and enhancing the overall quality of the house. However, the modular system also has shortcomings in practical application. On one hand, the modules are large and heavy, requiring specialized large-scale transportation equipment, leading to high transportation costs and stringent requirements for transportation routes. In rural areas with narrow roads or poor road conditions, transportation is easily restricted. On the other hand, modules are designed and manufactured according to specific room functions and dimensions. Once the design is finalized, later changes are difficult, making it less flexible than the panel system. If farmers have temporary design change requests during construction, these are often difficult to accommodate.

[0005] While panel-mounted systems offer advantages such as flexible dimensions, convenient transportation, and simple construction, they also suffer from numerous on-site assembly tasks, low construction efficiency, and relatively weak overall structural performance. Modular systems, on the other hand, boast high construction efficiency, good structural integrity, and stable quality, but are hampered by transportation difficulties and limited design flexibility. Therefore, both panel-mounted and modular systems have their advantages and disadvantages, making it difficult to simultaneously meet the diverse needs of rural housing construction. Consequently, existing technologies struggle to balance construction efficiency and structural integrity with design flexibility and transportation convenience, failing to fully satisfy the diverse requirements of rural housing construction. To address these issues, existing technologies urgently need improvement. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the present invention provides a prefabricated rural housing system and its design method, which ensures construction efficiency and structural integrity while taking into account design flexibility and transportation convenience, and fully meets the diverse needs of rural housing construction.

[0007] This invention is achieved using the following technical solution:

[0008] A prefabricated rural housing system includes a main house structure, multiple functional prefabricated modules, and a modular connection device. The main house structure includes multiple first prefabricated components and multi-layer spliced ​​floor slabs. Each spliced ​​floor slab is formed by horizontally splicing multiple second prefabricated components. Each first prefabricated component has a reserved first connection portion, and each second prefabricated component has a reserved second connection portion. The first and second prefabricated components are fixed to each other by an assemblable connection structure. The assemblable connection structure includes rigid connection components that match the first and second connection portions. The first prefabricated components and the spliced ​​floor slabs combine to form a spatial unit with a three-dimensional enclosed function. Each first prefabricated component has multiple predefined assembly areas, and each functional prefabricated module has an interface structure that matches the first prefabricated component. The modular connection device is installed between the assembly areas of the first prefabricated components and the functional prefabricated modules by pre-embedding or external placement to realize the detachable positioning connection of the functional prefabricated modules. The functional prefabricated modules are configured to allow them to be selectively installed in different assembly areas of the first prefabricated components according to design requirements.

[0009] Furthermore, the prefabricated functional module includes a prefabricated staircase and a prefabricated bathroom, with pre-embedded pipes or cable channels inside the prefabricated staircase and prefabricated bathroom.

[0010] Furthermore, the prefabricated staircase and prefabricated toilet are prefabricated as a single unit and installed in different assembly areas of the first prefabricated component.

[0011] Furthermore, the prefabricated staircase and prefabricated bathroom may be separately formed and installed in different assembly areas of the first prefabricated component.

[0012] Furthermore, the assembly area of ​​the first prefabricated component includes multiple assembly layers in the vertical direction and / or multiple rows of assembly areas in the horizontal direction, with reserved holes provided in the assembly layers and assembly areas. The modular connection device includes a connector passing through the reserved hole and a limiting member fastened to the connector.

[0013] Furthermore, the first precast component is a precast wall panel, the second precast component is a horizontal precast slab, and the rigid connection assembly includes a first reinforcing bar that is inserted into the first connection portion and a second reinforcing bar that is inserted into the second connection portion.

[0014] Furthermore, the first connecting part is a plurality of longitudinal channels arranged in an array inside the precast wall panel and penetrating the bottom and top of the precast wall panel. The second connecting part is a plurality of longitudinal through holes arranged in an array on the edge of the horizontal precast panel. When the bottom of the precast wall panel is vertically assembled onto the horizontal precast panel, the second steel bars that pass through the longitudinal through holes are inserted into the longitudinal channels of the precast wall panel one by one, and the upper end of the second steel bar overlaps with the lower end of the first steel bar inserted in the longitudinal channel. The upper end of the first steel bar extends from the top of the precast wall panel to interlock with the longitudinal through holes of the horizontal precast panel.

[0015] Furthermore, two adjacent vertically arranged first precast components are joined to form a corner area. Both ends of the first precast components are provided with splicing step surfaces that penetrate the precast wall panels vertically. Each splicing step surface is provided with multiple arrayed reinforcing components along the longitudinal direction. The reinforcing components of two adjacent first precast components are staggered vertically in the corner area. Corner steel bars are inserted in the corner area. After the corner steel bars are inserted with the reinforcing components, concrete is poured to form a vertical joint.

[0016] Furthermore, two adjacent second prefabricated components are spliced ​​together on the same horizontal plane to form a horizontal connecting joint.

[0017] A design method for a prefabricated rural housing system, including the aforementioned prefabricated rural housing system, comprises the following design steps:

[0018] (1) Based on the base area of ​​the target site, the total building area of ​​the target site, the building height, the number of floors and the customer’s preliminary requirements, determine the building appearance, the floor and room layout, wherein the room layout includes the main body of the house and the functional prefabricated modules, and the functional prefabricated modules are installed in the predefined assembly area of ​​the first prefabricated component according to the design requirements.

[0019] (2) Adjust the standard dimensions of the first prefabricated component, the second prefabricated component, and the functional prefabricated module according to the road transport size standard, and adjust the position of the functional prefabricated module in the main body of the house according to the design requirements, and establish a prefabricated farmhouse assembly model.

[0020] (3) Establish a building structure calculation model to calculate the structural strength of the building and calculate the quantity of materials and engineering work;

[0021] (4) Introduce cost parameters to obtain the corresponding construction cost; introduce construction and installation parameters to obtain the corresponding construction period;

[0022] (5) Send the design scheme output from step (4) to the customer. If the customer agrees, output the final farmhouse design scheme. If the customer does not agree, return to step (1).

[0023] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0024] This invention achieves technological innovation in two dimensions: structural combination and functional expansion, by constructing a hierarchical collaborative assembly system. At the building structure level, modular splicing of first and second prefabricated components is employed. Standardized matching of pre-reserved connection points and rigid connection components solves the problems of complex on-site splicing and insufficient structural strength in traditional slab-mounted systems. The combination of the first prefabricated component and the spliced ​​floor slab forms a three-dimensional closed spatial unit, breaking through the limitations of traditional planar splicing and enhancing the overall rigidity of the building. At the functional expansion level, the combination design of predefined assembly areas and modular connection devices enables multi-positional adjustability of the functional prefabricated modules. The modular connection devices adopt a hybrid arrangement of pre-embedded or external placement, ensuring connection reliability while accommodating future modification needs. Their detachable positioning characteristics allow functional modules to be flexibly adjusted in installation position according to actual requirements. The first and second prefabricated components respectively undertake the functions of the main structure and the floor slab. Rapid assembly is achieved through standardized interfaces of rigid connection components, retaining the transportation convenience of slab-mounted systems while enhancing structural integrity through three-dimensional spatial units. The combination design of modular connection devices and prefabricated functional modules allows for flexible installation of functional modules in different assembly areas. At the same time, the use of prefabricated components and standardized connection structures ensures structural integrity and construction efficiency while taking into account design flexibility and transportation convenience. It has the advantages of ensuring construction efficiency and structural integrity while taking into account design flexibility and transportation convenience. Attached Figure Description

[0025] Figure 1 This is one of the schematic diagrams of the prefabricated rural housing system according to Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the assembly of the basic and spliced ​​floor slabs in Embodiment 1 of the present invention;

[0027] Figure 3 This is one of the assembly diagrams of the first prefabricated component and the spliced ​​floor slab in Embodiment 1 of the present invention;

[0028] Figure 4 This is the second schematic diagram of the assembly of the first prefabricated component and the spliced ​​floor slab in Embodiment 1 of the present invention;

[0029] Figure 5 This is a schematic diagram of the second prefabricated component in Embodiment 1 of the present invention;

[0030] Figure 6 This is one of the assembly drawings of the functional prefabricated module and the first prefabricated component in Embodiment 1 of the present invention;

[0031] Figure 7 This is the second assembly drawing of the functional prefabricated module and the first prefabricated component in Embodiment 1 of the present invention.

[0032] Figure 8 This is a schematic diagram of the splicing of two adjacent first prefabricated components at the corner position in Embodiment 1 of the present invention;

[0033] Figure 9 yes Figure 8 Exploded view of the structure;

[0034] Figure 10 This is a schematic diagram of the connection between the first prefabricated component and the second prefabricated component in Embodiment 1 of the present invention via a rigid connection assembly;

[0035] Figure 11 This is a schematic diagram of the connection between the functional prefabricated module and the first prefabricated component in Embodiment 1 of the present invention via a modular connection device;

[0036] Figure 12 This is a simplified schematic diagram of the prefabricated staircase and prefabricated bathroom installed at the side of the main body of the house according to Embodiment 1 of the present invention;

[0037] Figure 13 This is a schematic diagram of the prefabricated staircase and prefabricated bathroom installed in the middle of the main body of the house according to Embodiment 1 of the present invention;

[0038] Figure 14 This is a schematic diagram of the prefabricated staircase and prefabricated toilet installed at different locations on the main body of the house according to Embodiment 1 of the present invention, wherein S1 represents the prefabricated staircase and S2 represents the prefabricated toilet.

[0039] Figure 15 This is a flowchart of the construction method of the prefabricated rural housing system according to Embodiment 2 of the present invention, which is a prefabricated rural housing system assembly method.

[0040] In the diagram: 10. Functional prefabricated module; 11. Prefabricated staircase; 12. Prefabricated bathroom; 20. Main building structure; 21. First prefabricated component; 211. Longitudinal duct; 212. Spliced ​​step surface; 213. Reinforcing component; 214. Corner area; 22. Second prefabricated component; 221. Longitudinal through hole; 23. First reinforcing bar; 24. Second reinforcing bar; 25. Corner reinforcing bar; 30. Modular connection device; 31. Reserved hole; 32. Connector; 33. Limiting component; 40. Foundation. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0042] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0043] Currently, rural housing construction faces a dilemma: balancing construction efficiency and structural performance. For example, traditional panel-mounted systems involve scattered components, leading to cumbersome on-site assembly, while modular systems, while improving efficiency, sacrifice design flexibility. Farmers' personalized needs for house layouts and transportation limitations create a dual constraint, necessitating a new construction method that allows for both rapid installation and flexible adjustment of functional layouts.

[0044] To address the aforementioned issues, the research and development process revealed that the core constraint on the development of prefabricated rural housing lies in the collaborative assembly method between components. Traditional methods integrate the main structure with functional modules for prefabrication, leading to transportation exceeding limits and inability to adapt to layout changes. Analysis showed that decoupling the main support system from the functional modules, while establishing standardized interfaces at connection points, retains the advantages of modularity while enabling flexible combinations. The concept of constructing three-dimensional spatial units stems from improving the insufficient rigidity of traditional panel-type splicing structures, employing a three-dimensional connection method to enhance overall stability.

[0045] Therefore, the present invention proposes a prefabricated rural housing system including a main house 20, a prefabricated functional module 10, and a modular connection device 30.

[0046] refer to Figures 1 to 14 This invention provides a prefabricated rural housing system, comprising a main house 20, multiple functional prefabricated modules 10, and a modular connection device 30. The main house 20 includes multiple first prefabricated components 21 and multi-layer spliced ​​floor slabs. Each spliced ​​floor slab is formed by horizontally splicing multiple second prefabricated components 22. Each first prefabricated component 21 has a reserved first connection portion, and each second prefabricated component 22 has a reserved second connection portion. The first prefabricated components 21 and the second prefabricated components 22 are fixed to each other by an assemblable connection structure, which includes a rigid connection that matches the first and second connection portions. The first prefabricated component 21 is combined with the spliced ​​floor slab to form a spatial unit with a three-dimensional enclosed function; the first prefabricated component 21 has multiple predefined assembly areas, and each functional prefabricated module 10 has an interface structure that matches the first prefabricated component 21. The modular connection device 30 is set between the assembly area of ​​the first prefabricated component 21 and the functional prefabricated module 10 by pre-embedding or external placement, and is used to realize the detachable positioning connection of the functional prefabricated module 10. The functional prefabricated module 10 is configured to allow it to be selectively installed in different assembly areas of the first prefabricated component 21 according to design requirements.

[0047] In this embodiment, the main body 20 of the house is composed of a first prefabricated component 21 and multi-layer spliced ​​floor slabs. Each component has matching connection parts and is fixed by rigid connection components to form a three-dimensional enclosed space. The three-dimensional enclosed space unit refers to a stable structure formed by the three-dimensional connection of vertical walls and horizontal floor slabs. Specifically, the first prefabricated component 21 and the second prefabricated component 22 can be quickly assembled and positioned through rigid connection components to complete the assembly of the main structure. The interface structure of the functional prefabricated module 10 is dimensionally matched with the assembly area of ​​the first prefabricated component 21, and can be fixed during installation through the modular connection device 30. Traditional panel-type rural housing systems require a large number of connectors to be welded on-site, while this invention reduces the amount of on-site work through standardized plug-in structures. Compared with overall modular houses, this invention transports the functional prefabricated module 10 separately from the main body 20, so that the size of individual components meets the loading requirements of conventional trucks and adapts to rural road conditions. In traditional methods, the fixed functional prefabricated module 10 leads to a rigid layout, while the use of modular connection devices 30 allows farmers to adjust the room functional zoning according to changes in family members, resulting in design flexibility.

[0048] This invention achieves technological innovation in two dimensions: structural combination and functional expansion, by constructing a hierarchical collaborative assembly system. At the main building level 20, modular splicing of the first prefabricated component 21 and the second prefabricated component 22 is adopted. Through the standardized matching of reserved connection parts and rigid connection components, the problems of complex on-site splicing and insufficient structural strength in traditional slab-mounted systems are solved. The combination of the first prefabricated component 21 and the spliced ​​floor slab forms a three-dimensional closed spatial unit, breaking through the limitations of traditional planar splicing and enhancing the overall rigidity of the building. At the functional expansion level, the combination design of predefined assembly areas and modular connection devices 30 enables the functional prefabricated modules 10 to have multi-position adjustability. The modular connection devices 30 adopt a hybrid arrangement of pre-embedded or external placement, ensuring connection reliability while accommodating future modification needs. Their detachable positioning characteristics allow the functional prefabricated modules 10 to be flexibly adjusted in installation position according to actual needs. The first prefabricated component 21 and the second prefabricated component 22 respectively undertake the functions of the main structure and the floor slab. Rapid assembly is achieved through standardized interfaces of rigid connection components, retaining the advantages of convenient transportation of slab-mounted systems while improving the overall structural integrity through three-dimensional spatial units. The combination design of modular connection device 30 and functional prefabricated module 10 enables the functional prefabricated module 10 to be flexibly installed in different assembly areas. At the same time, the use of prefabricated components and standardized connection structure ensures structural integrity and construction efficiency while taking into account design flexibility and transportation convenience. It has the advantages of ensuring construction efficiency and structural integrity while taking into account design flexibility and transportation convenience.

[0049] It should be noted that the prefabricated functional module 10 is suitable for small spaces with fixed functions. Factory-integrated production ensures functional integrity and construction precision, reducing complex on-site operations. The main building structure 20 is constructed using a panel assembly method, suitable for flexible, large spaces, retaining the advantages of flexible floor plan customization and convenient transportation.

[0050] In a preferred embodiment, the prefabricated functional module 10 includes a prefabricated staircase 11 and a prefabricated toilet 12, with pre-embedded pipes or cable channels inside the prefabricated staircase 11 and the prefabricated toilet 12.

[0051] In this embodiment, the prefabricated staircase 11 refers to a staircase unit that is precast and integrated with internal pipeline channels in a factory. It can have pre-embedded cable conduits running through the steps, such as PVC pipes or metal conduits, fixedly embedded along the staircase structure. The prefabricated bathroom 12 refers to an independent bathroom unit that is integrally formed in a factory and integrated with water supply and drainage pipes. It can have pre-reserved interfaces for water supply and drainage pipes. Pre-embedded pipes or cable channels refer to water and electricity pathways formed by pre-reserving or embedding pipelines in the mold during the production process of the functional prefabricated module 10. For example, the pipelines are tied to the reinforcing steel frame and integrally formed during the concrete pouring stage.

[0052] Specifically, during factory production, the prefabricated staircase 11 integrates the treads and supporting structure into a single casting, with cable channels embedded within the treads. The cable channels run at the same angle as the staircase's inclination, with exposed interfaces at both ends. During prefabrication, the prefabricated bathroom 12 connects the wall panels and floor components to form a closed space, with pre-embedded drainage and water supply pipes. The drainage pipes align with the bathroom floor drain, and the water supply pipes extend to the pre-designated faucet installation point. On the construction site, the prefabricated staircase 11 connects to the building's electrical wiring via the pre-embedded cable channels, and the prefabricated bathroom 12 connects to the external water supply and drainage system via pre-embedded pipes, eliminating the need for on-site trenching and pipework installation.

[0053] In traditional prefabricated buildings, staircases and bathrooms require trenching for pipelines after the main structure is completed. This can easily damage the internal structure of prefabricated components and result in low construction efficiency. The technical solution of integrating pipeline channels within prefabricated modules avoids secondary on-site construction through factory pre-embedding, shortening the installation cycle. While existing modular systems can achieve overall hoisting, fixed pipeline interface positions limit layout. The standardized design of pre-embedded pipelines in this implementation allows modules to adjust their installation positions according to actual needs while maintaining pipeline connection compatibility. This invention enables rapid connection between the functional prefabricated module 10 and the building's main water and electricity system, reducing on-site pipeline laying procedures and avoiding weakening of structural strength due to trenching. The pre-embedded pipeline design of the prefabricated staircase 11 and bathrooms integrates the water and electricity system with the main building 20, improving structural stability. Standardized pre-embedded interfaces allow modules to adapt to the installation needs of different assembly areas, meeting the diverse spatial layout requirements of rural housing.

[0054] It is understandable that functional prefabricated modules 10 are used for rooms with fixed functions and small areas, such as bathrooms and stairwells. For rooms with open spaces and high functional flexibility, such as living rooms, dining rooms, and bedrooms, prefabricated panels are used.

[0055] As a preferred embodiment, refer to Figures 12 to 14 The prefabricated staircase 11 and the prefabricated toilet 12 are prefabricated as a whole and installed in different assembly areas of the first prefabricated component 21.

[0056] In this embodiment, integrated prefabrication refers to the prefabricated staircase 11 and prefabricated bathroom 12 being manufactured as a single integral module in the factory. Specifically, this can be achieved by casting with molds or by assembling and then reinforcing the whole structure. This method improves the overall structural integrity by reducing on-site installation steps.

[0057] In other embodiments, the prefabricated staircase 11 and prefabricated toilet 12 are separately formed and installed in different assembly areas of the first prefabricated component 21. Separate forming refers to disassembling the prefabricated staircase 11 and prefabricated toilet 12 into independent modules for separate prefabrication. Specifically, standardized interface design can be used to achieve rapid docking between the separate modules. This method solves the transportation limitation problem by reducing the volume of individual modules.

[0058] Specifically, when transportation conditions at the construction site permit and the integrity of functional modules is critical, an integrated prefabricated module is directly installed into the reserved assembly area of ​​the first prefabricated component 21. Positioning and fixing are achieved through a modular connection device 30, thereby reducing on-site assembly procedures and ensuring structural stability between components. When transportation conditions are limited or the layout of functional modules needs adjustment, separate prefabricated modules are transported to the site. Prefabricated stairs 11 and prefabricated toilets 12 are independently installed in different assembly areas according to actual needs, and a reliable connection between the separate modules and the first prefabricated component 21 is achieved through an interface structure. These two installation methods can be flexibly selected according to the actual scenario, preserving the structural integrity advantages of the modular system while avoiding the difficulties of transporting integral prefabricated modules through a modular design. Compared to existing assembly systems where the modules are too large due to integral prefabrication, making them unsuitable for rural road transportation conditions, and where the fixed layout limits the installation flexibility of the functional prefabricated module 10, this invention uses a separate prefabrication installation method to divide the functional prefabricated module 10 into independent units, allowing it to meet the load and size limitations of conventional transport vehicles, while also allowing for adjustments to the installation position based on site conditions. Furthermore, the integrated prefabrication method can still be used as an option for scenarios with strict structural performance requirements, achieving a balance between construction efficiency and structural reliability. It effectively solves the transportation difficulties and rigid layout problems caused by the overall prefabrication of modular systems. This allows the functional prefabricated modules 10 to be transported separately to adapt to rural road conditions, and to be installed either as a whole or in parts according to actual needs, improving design flexibility while ensuring construction efficiency. At the same time, both installation methods share standardized interface structures and modular connection devices 30, ensuring reliable connections between different types of functional prefabricated modules 10 and the main building structure 20, maintaining the structural integrity advantages of prefabricated buildings.

[0059] As a preferred embodiment, see Figure 9 The assembly area of ​​the first prefabricated component 21 includes a multi-level assembly layer in the vertical direction and / or a multi-column assembly area in the horizontal direction. Pre-reserved holes 31 are provided on the assembly layer and assembly area. The modular connection device 30 includes a connector 32 passing through the pre-reserved hole 31 and a limiting member 33 that is fastened to the connector 32.

[0060] In this embodiment, the multi-level assembly layer in the vertical direction refers to multiple installation layers set at a vertical height, allowing the prefabricated functional modules 10 to be installed at different heights, solving the layout limitation problem caused by traditional single-plane installation. The multi-column assembly area in the horizontal direction refers to multiple installation columns divided on a horizontal plane, allowing the prefabricated functional modules 10 to be flexibly arranged along the horizontal direction to adapt to the installation requirements of modules of different sizes. The reserved hole 31 refers to the through-hole opened at intervals along the axis of the assembly layer or assembly area, which can specifically adopt a rectangular or circular hole structure to form standardized connection points, facilitating the batch pre-embedding and rapid positioning of the connectors 32.

[0061] The connector 32 refers to the load-bearing component that passes through the reserved hole 31. Specifically, it can be a threaded steel bar or a steel bolt. It forms a rigid support structure through the through hole and bears the lateral load transfer of the functional prefabricated module 10.

[0062] The limiting component 33 refers to the constraint component that is fastened to the end of the connector 32. Specifically, it can be a nut or a buckle device, which mechanically locks the connector 32 to prevent axial displacement and ensure the structural stability of the module after installation.

[0063] Specifically, a combination of vertical multi-level assembly layers and horizontal multi-column assembly areas allows the prefabricated functional module 10 to freely choose its installation position in three-dimensional space. Pre-drilled holes 31 are distributed along the extension of the assembly layers or assembly areas, forming a continuous array of connection points, allowing adjustment of the installation spacing according to the module size. After the connector 32 passes through the pre-drilled hole 31, its length direction is consistent with the extension direction of the assembly layer or assembly area, forming a continuous force transmission path. Limiting members 33 provide fastening constraints at both ends of the connector 32, eliminating connection gaps and avoiding stress concentration. When the prefabricated functional module 10 is installed, its interface structure is aligned with the pre-drilled hole 31, and rigid fixation is achieved by inserting the connector 32 and assembling the limiting members 33, enabling detachable installation of the module in any assembly layer or assembly area.

[0064] Compared to traditional assembly systems that only support single-layer planar installation and have fixed connection points, resulting in limited module layout and difficulty in optimizing transportation dimensions, this invention utilizes a composite assembly area division with vertical multi-level and horizontal multi-column configurations. This allows modules to be distributed across layers or expanded horizontally, reducing the transportation volume of individual prefabricated components. The standardized combination design of the pre-drilled holes 31 and connectors 32 simplifies on-site construction processes and avoids the additional cost of customized connectors 32. The split assembly method of the limiting component 33, compared to traditional welding and fixing processes, facilitates later module maintenance and position adjustment.

[0065] This invention enables flexible positioning and installation of the prefabricated functional module 10 in three-dimensional space, effectively improving design freedom and reducing transportation difficulties. The modular connection device 30, through the combined application of standardized pre-drilled holes 31 and adjustable connectors 32, ensures the stable installation of modules of different sizes while simplifying the construction process. The mechanical locking mechanism of the limiting component 33 effectively prevents loosening of the connection, enhancing the long-term reliability of the structure.

[0066] It is understandable that when the functional prefabricated module 10 has multiple layers, the upper and lower layers of the module are connected by grouting and anchoring lap joint technology to ensure that the module and the panel splicing area have the same excellent structural performance. Finally, the two areas are connected by bolt intervals to achieve coordinated stress distribution.

[0067] In a preferred embodiment, the first precast component 21 is a precast wall panel, the second precast component 22 is a horizontal precast slab, and the rigid connection assembly includes a first reinforcing bar 23 that is inserted into the first connection part and a second reinforcing bar 24 that is inserted into the second connection part.

[0068] In this embodiment, the precast wall panel refers to a factory-prefabricated component that serves as the vertical load-bearing member of the main body 20 of the building. Specifically, it can be formed by concrete casting and pre-embedded longitudinal channels 211, with standardized design ensuring installation accuracy. The horizontal precast slab refers to a component unit of a multi-layered spliced ​​floor slab, specifically a planar concrete component with longitudinal through holes 221 at the edges. It forms a continuous load-bearing surface through horizontal splicing. The horizontal precast slab can be a multi-functional composite panel. The first connection part refers to a pre-set longitudinal force transmission channel within the precast wall panel, specifically an array of channels penetrating the top and bottom of the wall panel, used to form a positioning reference for rebar insertion. The second connection part refers to a pre-set constraint interface at the edge of the horizontal precast slab, specifically a through-hole structure aligned with the precast wall panel channels, used to establish a lateral connection path. The first rebar 23 and the second rebar 24 refer to separate force transmission components, specifically threaded steel bars of different diameters, forming a continuous load-bearing system through overlapping.

[0069] Specifically, refer to Figure 10 When the bottom of the first precast component 21 is vertically assembled onto the second precast component 22, the second reinforcing bar 24 passes through the longitudinal through-hole 221 of the horizontal precast slab and inserts into the longitudinal channel 211 at the bottom of the precast wall panel. The upper end of the second reinforcing bar 24 at least partially overlaps with the lower end of the first reinforcing bar 23 pre-installed inside the precast wall panel, while the upper end of the first reinforcing bar 23 extends from the top of the precast wall panel, providing an insertion interface for the installation of the upper horizontal precast slab. Through the precise insertion of the reinforcing bars within the longitudinal channel 211, a vertical force transmission path and a lateral constraint mechanism are formed. The standardized interface design between the precast wall panel and the horizontal precast slab allows for assembly without welding or bolt fixing, and the lap length of the reinforcing bars can be determined based on structural calculations. During the insertion process, the wrapping effect of the longitudinal channel 211 on the reinforcing bars improves the shear strength of the joint area while avoiding the low construction efficiency caused by on-site welding.

[0070] Compared to traditional panel-mounted systems that use on-site welding or bolting to fix wall panels and floor slabs, which require a large amount of manual labor and whose connection quality is greatly affected by the construction skill level, this invention simplifies the connection process to a single action of positioning and inserting reinforcing bars through the standardized channels of prefabricated components. This reduces on-site operation steps while ensuring connection accuracy. The lap length of the reinforcing bars in the channels is pre-calculated, forming a reliable force transmission system, which is more conducive to improving the overall structural integrity than traditional point-connection methods.

[0071] This invention enables rapid positioning and installation of precast wall panels and horizontal precast slabs, effectively reducing on-site splicing work. The continuous force transmission system formed by the rebar splicing significantly improves the shear bearing capacity of the connection nodes between the wall panels and floor slabs, avoiding the problem of insufficient overall stiffness caused by weak connections in traditional slab splicing systems. The standardized design of the ducts and rebar ensures that the components remain independent during transportation, and assembly can be completed on-site with only simple splicing, balancing structural performance and construction efficiency.

[0072] As a preferred embodiment, refer to Figure 3 , Figure 5 and Figure 10 The first connecting part is a plurality of longitudinal channels 211 arranged in an array inside the precast wall panel and penetrating the bottom and top of the precast wall panel. The second connecting part is a plurality of longitudinal through holes 221 arranged in an array on the edge of the horizontal precast panel. When the bottom of the precast wall panel is vertically assembled onto the horizontal precast panel, the second steel bars 24 passing through the longitudinal through holes 221 are inserted into the longitudinal channels 211 of the precast wall panel in a corresponding manner, and the upper end of the second steel bars 24 overlaps with the lower end of the first steel bars 23 inserted in the longitudinal channels 211. The upper end of the first steel bars 23 extends from the top of the precast wall panel to interlock with the longitudinal through holes 221 of the horizontal precast panel.

[0073] In this embodiment, the longitudinal channel 211 refers to a channel extending along the height direction of the precast wall panel. Its cross-sectional shape can be circular or rectangular, used to guide the insertion of the second reinforcing bar 24 and limit horizontal offset. The longitudinal through hole 221 refers to a vertical through hole set at the edge of the horizontal precast slab. Its distribution position corresponds one-to-one with the longitudinal channel 211, ensuring that the reinforcing bar is accurately aligned with the wall panel channel after it passes through. The first reinforcing bar 23 refers to a vertical reinforcing bar inserted into the longitudinal channel 211 of the precast wall panel. Its lower end extends to the bottom of the channel, and its upper end extends out of the top of the wall panel. Specifically, it can be installed by post-insertion, used to form a continuous lap joint between the upper and lower layers of reinforcing bars. The second reinforcing bar 24 refers to a vertical reinforcing bar that passes through the longitudinal through hole 221 at the edge of the horizontal precast slab. Its length can exceed the upper end of the longitudinal through hole 221, as shown in the reference. Figure 2 The second reinforcing bar 24 is specifically a reinforcing bar structure extending from the upper surface of the foundation 40. The longitudinal through hole 221 of the horizontal precast slab is connected to the vertical reinforcing bar of the foundation 40 by insertion to fix the horizontal precast slab structural layer, and at the same time to form a lap joint with the first reinforcing bar 23 in the precast wall panel.

[0074] Specifically, refer to Figure 10When the first precast component 21 (precast wall panel) and the second precast component 22 (horizontal precast slab) are assembled vertically, the second reinforcing bar 24 passes through the longitudinal through hole 221 of the second precast component 22 and is directly inserted into the longitudinal channel 211 of the first precast component 21. Since the longitudinal channels 211 and the longitudinal through holes 221 are arranged in an array, the second reinforcing bar 24 naturally achieves positioning alignment between the components during insertion. The upper end of the second reinforcing bar 24 overlaps with the lower end of the first reinforcing bar 23 by a predetermined length, transferring vertical loads through the contact surface between the reinforcing bars. The upper end of the first reinforcing bar 23 extends to the top of the first precast component 21, providing an insertion reference for the longitudinal through hole 221 of the upper second precast component 22. This connection method eliminates the need for on-site adjustment of the reinforcing bar position. Through the constraint of the precast longitudinal channels 211, it ensures that the reinforcing bars of each layer automatically form a load-bearing system. The reinforcing bars in the overlap area can be fixed by concrete pouring, forming a grout-anchored overlap structure, thus achieving a high-strength connection between components and significantly improving the overall structural integrity.

[0075] Compared to traditional prefabricated connections that often use exposed steel plate welding or bolt fastening, requiring on-site positioning and calibration and susceptible to construction errors, this invention addresses the challenges of pre-embedded rebar cage lap joints. The complementary design of prefabricated longitudinal channels 211 and longitudinal through holes 221 allows the rebars to automatically align under the component's own weight, eliminating manual adjustment. The arrayed layout of the longitudinal through holes 221 ensures even distribution of connection points across the component's contact surface, preventing localized stress concentration. This arrayed design also facilitates standardized production. The continuous lap joints of the upper and lower layers of rebars form a continuous force transmission system, effectively improving structural integrity. This invention enables rapid positioning and installation of the first prefabricated component 21 and the second prefabricated component 22, reducing construction adjustment time through automatic alignment of the prefabricated channels and rebars. The mechanical lap joints between the rebars create a reliable force transmission mechanism, ensuring vertical loads are transferred along the continuous rebar path and avoiding the heat-affected zone and strength loss associated with traditional welding processes. The extended design of multi-layered reinforcing bars simplifies the connection process between upper and lower layer components, forming a standardized assembly system from bottom to top, significantly improving construction efficiency and structural stability. It should be noted that the first reinforcing bar 23 in this embodiment is installed by a rear insertion method, which, compared to the traditional pre-embedded method, fixes it to the precast wall panel. This solves the problems of complex molds during production and easy bending of protruding reinforcing bars during transportation associated with the pre-embedded method.

[0076] In a preferred embodiment, two adjacent vertically arranged first precast components 21 are joined together to form a corner area 214. Both ends of the first precast component 21 are provided with splicing step surfaces 212 that penetrate the precast wall panels vertically. Each splicing step surface 212 is provided with multiple arrayed reinforcing components 213 along the longitudinal direction. The reinforcing components 213 of two adjacent first precast components 21 are staggered vertically within the corner area 214. Corner steel bars 25 are inserted into the corner area 214. After the corner steel bars 25 are inserted into the reinforcing components 213, concrete is poured to form a vertical joint.

[0077] In this embodiment, reference Figure 8 and Figure 9 The splicing step surface 212 refers to the stepped contact surface formed at the end of the first precast component 21. The reinforcing component 213 refers to the longitudinal reinforcing unit set on the splicing surface of the precast wall panel, used to form a rigid connection node with the corner steel bar 25. The staggered distribution means that the reinforcing components 213 of adjacent first precast components 21 are alternately arranged in the vertical direction to form a cross-interlocking shear-resistant structure. The corner steel bar 25 refers to the reinforcing steel bar specifically used to connect the corner area 214.

[0078] Specifically, when the sides of two first precast components 21 are perpendicularly joined, the splicing step surfaces 212 at their ends form interlocking contact surfaces, providing initial positioning support for the corner area 214. The longitudinally distributed reinforcing members 213 on the splicing step surfaces 212 are arranged in a staggered pattern, creating a complementary vertical distribution of the connection nodes between adjacent first precast components 21. Corner reinforcing bars 25 are inserted into the staggered reinforcing members 213, forming a continuous load-bearing skeleton that runs through the corner area 214. Concrete is then poured into the splice joint, creating an integral connection between the reinforcing bars and the precast components. This structure, through the combined action of the mechanical interlocking between precast components and the cast-in-place concrete, constructs a three-dimensional force transmission system, retaining the construction efficiency of precast assembly while achieving the overall performance of cast-in-place structures. Traditional slab splicing systems often use a single row of reinforcing bars inserted with mortar filling in the corner area 214, which suffers from weak shear resistance and a single force transmission path. This invention optimizes the stress transfer path through staggered connection nodes, while avoiding quality defects caused by dense reinforcement and incomplete concrete pouring. It effectively enhances the combined flexural and shear load-bearing capacity of the corner area 214 of the prefabricated wall panel, ensuring that the structural integrity at the vertical joints meets the standards for cast-in-place structures. The mechanical interlocking structure between prefabricated components can bear temporary loads during construction, and the combined design of the corner reinforcement 25 and the staggered reinforcing member 213 achieves a balance between construction convenience and structural reliability. The integral joint formed by cast-in-place concrete completely eliminates the risk of leakage from gaps present in traditional dry connections.

[0079] In addition, the present invention sets connection points only at key stress-bearing parts such as wall corners, which greatly reduces the number of vertical joints in prefabricated wall panels, reduces weak links from the source, and effectively solves the problems of numerous on-site joints and poor overall integrity of buildings in panel splicing systems.

[0080] In a preferred embodiment, two adjacent second prefabricated components 22 are spliced ​​together on the same horizontal plane to form a horizontal connecting seam.

[0081] In this embodiment, the horizontal connecting seam refers to the continuous joint formed by aligning the edges of adjacent second prefabricated components 22 in the horizontal direction. Specifically, the joint can be fixed by bolt fastening, rebar lap splicing, or welding. This horizontal connecting seam is directly connected through the standardized interface of the edge of the second prefabricated component 22, without the need for on-site angle adjustment or cutting, thereby achieving rapid positioning and assembly.

[0082] Specifically, after the second prefabricated component 22 is transported to the site, it is laid horizontally on the foundation 40, with the edge interfaces of adjacent second prefabricated components 22 aligned using a preset positioning reference. This planar splicing method allows multiple second prefabricated components 22 to form a uniformly distributed stress transfer interface in the horizontal direction, avoiding local bending moment concentration caused by staggered joints, and providing a flat base condition for the construction of the floor waterproofing layer. Traditional slab splicing systems often use staggered splicing or inclined butt joint methods, requiring on-site adjustment of the prefabricated slab angle and complex positioning, resulting in reduced construction efficiency. Horizontal splicing, however, directly connects the second prefabricated components 22 through standardized interfaces on their edges, reducing positioning time and manual adjustment procedures, while ensuring uniform stress at the joints and improving the overall structural integrity. This invention achieves rapid assembly and reliable connection of the second prefabricated component 22, simplifies the floor slab assembly process, shortens the construction cycle, and enhances the overall rigidity of the floor slab through the continuous force transmission characteristics of the horizontal connection joint, avoiding the risk of cracks caused by local stress concentration and providing flat conditions for subsequent floor construction.

[0083] Example 2

[0084] refer to Figure 15 The present invention also provides a construction method for a prefabricated rural housing system, comprising the above-mentioned prefabricated rural housing system, wherein the design steps include:

[0085] (1) Based on the base area of ​​the target site, the total building area of ​​the target site, the building height, the number of floors and the initial needs of the customer, determine the building appearance, the floor and room layout, wherein the room layout includes the main building 20 and the functional prefabricated module 10, and the functional prefabricated module 10 is installed in the predefined assembly area of ​​the first prefabricated component 21 according to the design requirements.

[0086] (2) Adjust the standard dimensions of the first prefabricated component 21, the second prefabricated component 22, and the functional prefabricated module 10 according to the road transport size standard, and adjust the position of the functional prefabricated module 10 in the main body of the house 20 according to the design requirements to establish a prefabricated farmhouse assembly model.

[0087] (3) Establish a building structure calculation model to calculate the structural strength of the building and calculate the quantity of materials and engineering work;

[0088] (4) Introduce cost parameters to obtain the corresponding construction cost; introduce construction and installation parameters to obtain the corresponding construction period;

[0089] (5) Send the design scheme output from step (4) to the customer. If the customer agrees, output the farmhouse design scheme. If the customer does not agree, return to step (1) for adjustment.

[0090] In this embodiment, the road transport size standard refers to the cargo size range restricted for transport vehicle passage. Adjusting the dimensions of prefabricated components ensures they meet transport requirements, avoiding secondary cutting due to oversized transport. The building structure calculation model is a digital mechanical model established based on the finite element analysis method. Structural safety is verified by inputting material properties and load parameters. The predefined assembly area refers to standardized connection areas reserved on prefabricated components, enabling rapid positioning and installation of the functional prefabricated module 10 through standardized interface specifications. The customer feedback loop mechanism refers to an interactive process that iteratively optimizes the design scheme, achieving compatibility between personalized design and industrialized production through multiple confirmations of requirements.

[0091] Specifically, during the building layout determination phase, a three-dimensional spatial model is generated by integrating site parameters and customer requirements. This model matches the prefabricated functional modules 10 with the assembly areas of the main building 20, allowing for adjustable installation positions of the prefabricated functional modules 10. During the size adjustment phase, based on the maximum cargo width limit of transport vehicles, the first prefabricated component 21 is divided into standardized, interlocking units, while also allowing for dynamic configuration of the installation positions of the prefabricated functional modules 10 on the main structure. During the structural calculation phase, load distribution diagrams are automatically generated through parametric modeling, simultaneously optimizing component cross-sectional dimensions and reinforcement ratios. During the cost and schedule calculation phase, the prefabrication rate is correlated with construction procedures to generate economic indicators corresponding to different assembly schemes. During the scheme confirmation phase, design details are displayed through a three-dimensional visualization model, enabling customers to intuitively participate in scheme modifications, ultimately achieving a balance between design flexibility and construction efficiency.

[0092] Traditional design methods often fail to match prefabricated component dimensions with transportation requirements, leading to difficulties in transporting modular systems or inefficiencies in panel assembly systems. This invention addresses this by simultaneously constraining transportation dimensions and installation locations during the design phase, enabling prefabricated components to meet both road transport conditions and allow for flexible functional layout adjustments. Existing technologies lack a mechanism linking customer needs with engineering parameters, while this invention, through simultaneous optimization of structural calculations and cost / schedule, provides a quantifiable basis for design scheme comparison, avoiding resource waste caused by repeated modifications. This invention achieves automatic matching of prefabricated component dimensions with transportation conditions, reducing the risk of oversized transport; enhances spatial layout flexibility by dynamically adjusting the installation location of functional prefabricated modules 10; reduces material waste through collaborative calculations of structural safety and economy; and shortens the design cycle and improves scheme feasibility through closed-loop feedback between customer needs and engineering parameters. Ultimately, it meets the diverse construction needs of rural housing while ensuring construction efficiency and structural performance.

[0093] The prefabricated rural housing system of this invention utilizes prefabricated functional modules 10 for rooms with relatively fixed functional layouts and small areas, such as bathrooms and stairwells. Because of their specific functions, these modules are prefabricated in the factory, ensuring better functional integrity and construction precision. Rooms with relatively open spaces and high functional flexibility, such as living rooms, dining rooms, and bedrooms, utilize prefabricated panels. The prefabricated functional modules 10 can be flexibly positioned within the main house structure 20 formed by the panel assembly, according to the overall rural housing plan (e.g., centrally located, placed on the side, or staggered between upper and lower floors). The spacing and window positions of the first prefabricated components 21 can be flexibly adjusted around the prefabricated functional modules 10. This approach leverages the advantages of the prefabricated functional modules 10 in specific functional small spaces while utilizing the flexibility of prefabricated panels in large spaces, creating a more practical and flexible new prefabricated rural housing system. This method ensures the construction quality and efficiency of functionally fixed areas such as bathrooms and stairwells while retaining design flexibility in other areas, thereby improving overall structural performance and achieving multi-faceted optimization in prefabricated rural housing construction.

[0094] Meanwhile, this invention effectively solves the problems of numerous on-site splicing seams and poor overall integrity of the house in the panel splicing system. The system reduces the number of vertical splicing seams of the precast wall panels and sets connection points only in key parts such as wall corners. In terms of connection technology, the mortar anchor lap connection method is adopted, which greatly enhances the connection strength and stability between the precast components and significantly improves the overall integrity of the house structure.

[0095] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A prefabricated rural housing system, characterized in that, The system includes a main building (20), multiple prefabricated functional modules (10), and a modular connection device (30). The main building (20) includes multiple first prefabricated components (21) and multi-layer spliced ​​floor slabs. Each spliced ​​floor slab is formed by horizontally splicing multiple second prefabricated components (22). Each first prefabricated component (21) has a reserved first connection portion, and each second prefabricated component (22) has a reserved second connection portion. The first prefabricated components (21) and the second prefabricated components (22) are fixed to each other by an assemblable connection structure. The assemblable connection structure includes rigid connection components that match the first connection portion and the second connection portion. The component (21) and the spliced ​​floor slab are combined to form a spatial unit with a three-dimensional closed function; the first prefabricated component (21) has multiple predefined assembly areas, and each functional prefabricated module (10) has an interface structure that matches the first prefabricated component (21). The modular connection device (30) is set between the assembly area of ​​the first prefabricated component (21) and the functional prefabricated module (10) by pre-embedding or external placement, and is used to realize the detachable positioning connection of the functional prefabricated module (10). The functional prefabricated module (10) is configured to allow it to be selectively installed in different assembly areas of the first prefabricated component (21) according to design requirements. The assembly area of ​​the first prefabricated component (21) includes a multi-level assembly layer in the vertical direction and / or a multi-column assembly area in the horizontal direction. A reserved hole (31) is provided on the assembly layer and the assembly area. The modular connection device (30) includes a connector (32) passing through the reserved hole (31) and a limiting member (33) fastened to the connector (32). The first precast component (21) is a precast wall panel, the second precast component (22) is a horizontal precast panel, and the rigid connection assembly includes a first reinforcing bar (23) that is inserted into the first connection part and a second reinforcing bar (24) that is inserted into the second connection part; The first connecting part is a plurality of longitudinal channels (211) arranged in an array inside the precast wall panel and penetrating the bottom and top of the precast wall panel. The second connecting part is a plurality of longitudinal through holes (221) arranged in an array on the edge of the horizontal precast panel. When the bottom of the precast wall panel is vertically assembled onto the horizontal precast panel, the second steel bars (24) that pass through the longitudinal through holes (221) are inserted into the longitudinal channels (211) of the precast wall panel one by one, and the upper end of the second steel bars (24) overlaps with the lower end of the first steel bars (23) inserted in the longitudinal channels (211). The upper end of the first steel bars (23) extends from the top of the precast wall panel to interlock with the longitudinal through holes (221) of the horizontal precast panel. Two adjacent vertically arranged first precast components (21) are joined to form a corner area (214). The two ends of the first precast component (21) are provided with splicing step surfaces (212) that penetrate the precast wall panels vertically. Each splicing step surface (212) is provided with multiple arrayed reinforcing members (213) along the longitudinal direction. The reinforcing members (213) of two adjacent first precast components (21) are staggered vertically in the corner area (214). Corner steel bars (25) are inserted in the corner area (214). After the corner steel bars (25) are inserted into the reinforcing members (213), concrete is poured to form a vertical joint.

2. The prefabricated rural housing system according to claim 1, characterized in that, The prefabricated functional module (10) includes a prefabricated staircase (11) and a prefabricated toilet (12), with prefabricated pipes or cable channels embedded inside the prefabricated staircase (11) and the prefabricated toilet (12).

3. The prefabricated rural housing system according to claim 2, characterized in that, The prefabricated staircase (11) and the prefabricated toilet (12) are prefabricated as a whole and installed in different assembly areas of the first prefabricated component (21).

4. The prefabricated rural housing system according to claim 2, characterized in that, The prefabricated staircase (11) and prefabricated toilet (12) are separately formed and installed in different assembly areas of the first prefabricated component (21).

5. The prefabricated rural housing system according to claim 1, characterized in that, Two adjacent second prefabricated components (22) are spliced ​​together on the same horizontal plane to form a horizontal connecting seam.

6. A design method for a prefabricated rural housing system, characterized in that, The prefabricated rural housing system according to any one of claims 1-5 includes the following design steps: (1) Based on the base area of ​​the target site, the total building area of ​​the target site, the building height, the number of floors and the initial needs of the customer, determine the building appearance, the floor and room layout, wherein the room layout includes the main body of the house (20) and the prefabricated functional modules (10), and the prefabricated functional modules (10) are installed in the predefined assembly area of ​​the first prefabricated component (21) according to the design requirements. (2) Adjust the standard dimensions of the first prefabricated component (21), the second prefabricated component (22), and the functional prefabricated module (10) according to the road transport size standard, and adjust the position of the functional prefabricated module (10) in the main body of the house (20) according to the design requirements to establish a prefabricated farmhouse assembly model; (3) Establish a building structure calculation model to calculate the structural strength of the building and calculate the quantity of materials and engineering work; (4) Introduce cost parameters to obtain the corresponding construction cost; introduce construction and installation parameters to obtain the corresponding construction period; (5) Send the design scheme output from step (4) to the customer. If the customer agrees, output the final farmhouse design scheme. If the customer does not agree, return to step (1).

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