Prefabricated wall component and modular building

Abstract

The application discloses a prefabricated wall component and a modular assembly type building, wherein the prefabricated wall component comprises a prefabricated single-layer wallboard, a prefabricated convex rib which is integrally cast and formed with the prefabricated single-layer wallboard and is located on one side outer wall of the prefabricated single-layer wallboard, and through holes are formed in the prefabricated single-layer wallboard and the prefabricated convex rib; two prefabricated wall components are respectively assembled in a first modular building and a second modular building after being respectively prefabricated in a factory, the first modular building and the second modular building are assembled on site, the prefabricated wall component of the first modular building and the prefabricated wall component of the second modular building are arranged in a spaced and opposite mode, and temporary opposite-pulling screw rods are used to pass through the through holes to realize fixed connection, so that the first modular building and the second modular building are combined into a complete wall body. The application solves the problem that the existing double-wall structure occupies indoor space, and has the advantages of small wall thickness, high space utilization rate and convenient connection construction.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building engineering technology, specifically to a prefabricated wall component and a modular prefabricated building. Background Technology

[0002] The core characteristic of modular building systems lies in the fact that each modular building unit is prefabricated in a factory as an independent and complete building module. This model requires each modular building unit to have complete load-bearing capacity and enclosure function to maintain structural stability during transportation and on-site hoisting, and to directly form the usable space of the building after assembly. Therefore, prefabricated wall components in existing technologies typically adopt a complete wall structure with a thickness of generally 150mm to 200mm to meet the requirements of independent prefabrication, independent transportation, and independent hoisting of units throughout the entire process.

[0003] However, when multiple modular building units are transported to the site for assembly, the complete walls of adjacent modular units will inevitably be arranged back to back, and the thickness of the complete walls of the two modular building units will be directly superimposed, resulting in a "double wall structure" with a total thickness of 300mm to 400mm or more.

[0004] The emergence of "double-wall structures" directly leads to the encroachment on usable floor space within buildings. In modular building systems, the usable area of ​​each unit is strictly limited during the architectural design phase. The non-functional thickness added by the double-wall structure extends along the building plan, resulting in a reduction in the net interior width and a decrease in the actual usable space compared to the design value. Due to the large number of modular units and the recurring double-wall nodes along the building plan, the accumulated space loss is significant, directly weakening the advantages of modular buildings in terms of space utilization.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention proposes a prefabricated wall component and a modular prefabricated building, specifically employing the following technical solution: A precast wall component, comprising: Precast single-layer wall panels; Precast ribs are integrally cast with the precast single-layer wall panel, and the precast ribs are located on one side of the outer wall of the precast single-layer wall panel. Through holes are provided on the prefabricated single-layer wall panel and the prefabricated protruding rib; After the two prefabricated wall components are prefabricated separately in the factory, they are assembled into the first modular building and the second modular building, respectively. The first modular building and the second modular building are assembled on site. The prefabricated wall components of the first modular building and the prefabricated wall components of the second modular building are arranged at intervals and opposite to each other. They are fixedly connected by temporary tie rods passing through the through holes to form a complete wall.

[0007] Optionally, multiple rows of tie rope loops are pre-embedded in the prefabricated single-layer wall panel along its length. The multiple tie rope loops in each row are arranged along the height direction of the prefabricated single-layer wall panel, and the multiple tie rope loops in each row on the prefabricated wall components of the first modular building and the prefabricated wall components of the second modular building are connected one-to-one.

[0008] This invention also provides a modular prefabricated building, comprising: A first modular building includes a prefabricated wall component with at least one of the prefabricated wall components, wherein the prefabricated wall component of the first modular building is a first prefabricated wall component; The second modular building includes a prefabricated wall component of at least one of the prefabricated wall components, wherein the prefabricated wall component of the second modular building is a second prefabricated wall component; The first modular building and the second modular building are prefabricated separately in the factory and then assembled on site. The first prefabricated wall component of the first modular building and the second prefabricated wall component of the second modular building are spaced apart and opposite to each other. They are fixedly connected by temporary tie rods passing through the through holes. They are integrated by pouring concrete into the gap between the first prefabricated wall component of the first modular building and the second prefabricated wall component of the second modular building to form a concrete layer, thus assembling a complete wall.

[0009] Optionally, the first prefabricated rib divides one side of the outer wall of the first prefabricated wall panel into multiple first non-rib regions, and the second prefabricated rib divides one side of the outer wall of the second prefabricated wall panel into multiple second non-rib regions. The first prefabricated rib and the second prefabricated rib are arranged opposite each other at a distance, and the first non-rib region and the second non-rib region are arranged opposite each other at a distance; A vertical reinforcing bar is inserted between the first prefabricated rib and the second prefabricated rib, and the vertical reinforcing bar is located on one side of the tie rod; And / or, a vertical reinforcing bar is inserted between the first non-convex rib region and the second non-convex rib.

[0010] Optionally, a first edge member is provided at both ends of the first precast wall panel, and a second edge member is provided at both ends of the second precast wall panel. The two ends of the first precast wall panel and the two ends of the second precast wall panel are respectively fixedly connected through the first edge member and the second edge member.

[0011] Optionally, the first edge member includes a plurality of first stirrups embedded along the height direction of the first precast wall member, and the second edge member includes a plurality of second stirrups embedded along the height direction of the second precast wall member; During on-site assembly of the first modular building and the second modular building, multiple first stirrups and multiple second stirrups are fixedly connected one-to-one through connecting components.

[0012] Optionally, the connecting assembly includes connecting stirrups and vertical inserts, wherein the first stirrup and the second stirrup are arranged opposite to each other, the connecting stirrup is arranged between the first stirrup and the second stirrup and intersects with both the first stirrup and the second stirrup, and the vertical inserts are respectively inserted into the intersection area between the connecting stirrup and the first stirrup and the intersection area between the connecting stirrup and the second stirrup; Optionally, the connecting assembly includes a connecting tie rod, and the middle part of the connecting stirrup is connected through the connecting tie rod.

[0013] Optionally, the connecting assembly includes a connecting member, which includes a vertical insertion rod and a plurality of forked fasteners fixed to one side of the vertical insertion rod and arranged along its length. The vertical insertion rod is inserted into a plurality of first stirrups / second stirrups. Rotating the vertical insertion rod causes the plurality of forked fasteners to rotate to one side of the plurality of second stirrups / first stirrups, and the plurality of forked fasteners are correspondingly located above the plurality of second stirrups / first stirrups. The vertical insertion rod is further inserted downwards, causing the plurality of forked fasteners to be correspondingly engaged with the second stirrups / first stirrups.

[0014] Optionally, the connecting assembly includes a connecting member, which includes a vertical insertion rod and a plurality of forked fasteners fixed to opposite sides of the vertical insertion rod along its length. The vertical insertion rod is inserted into the gap between the first precast wall component and the second precast wall component. The plurality of forked fasteners on both sides of the vertical insertion rod are respectively inserted into the first edge component and the second edge component. By pouring concrete into the gap between the first precast wall component and the second precast wall component to form a concrete layer, the first precast wall component and the second precast wall component are integrally connected to form a complete wall.

[0015] Optionally, the middle portion of the second end of the first stirrup is connected to the middle portion of the second end of the second stirrup by at least one of the connecting members; Optionally, at least three first vertical steel bars are pre-embedded at both ends of the first precast wall component along the length direction, and the first end of the first stirrup is sleeved on all the first vertical steel bars. The first vertical reinforcement includes first end vertical reinforcements located at both ends, and a first intermediate vertical reinforcement located between the first end vertical reinforcements at both ends; Multiple first embedded tie bars are pre-embedded in the first precast wall component along the height direction. The first end of the first embedded tie bar is sleeved on the first intermediate vertical steel bar, and the second end of the first embedded tie bar extends out of the first precast wall component. A vertical dowel bar is inserted into the second end of the first embedded tie bar. At least three second vertical steel bars are pre-embedded at both ends of the second precast wall component along the length direction, and the first end of the second stirrup is sleeved on all the second vertical steel bars; The second vertical reinforcement includes second end vertical reinforcements located at both ends, and a second intermediate vertical reinforcement located between the second end vertical reinforcements at both ends; Multiple second embedded tie bars are pre-embedded along the height direction in the second precast wall component. The first end of the second embedded tie bar is sleeved on the second intermediate vertical steel bar, and the second end of the second embedded tie bar extends out of the second precast wall component. A vertical dowel bar is inserted into the second end of the second embedded tie bar. The first embedded tie bar and the second embedded tie bar are arranged opposite to each other, and the connecting member connecting the middle of the second end of the first stirrup and the middle of the second end of the second stirrup is located on one side of the first embedded tie bar and the second embedded tie bar.

[0016] Optionally, at least three first vertical steel bars are pre-embedded in the length direction at both ends of the first precast wall component, and the first end of the first stirrup is sleeved on all the first vertical steel bars. The first vertical reinforcement includes first end vertical reinforcements located at both ends, and a first intermediate vertical reinforcement located between the first end vertical reinforcements at both ends; Multiple first sub-stirrups are pre-embedded in the first precast wall component along the height direction. The first end of the first sub-stirrup is sleeved on a first end vertical steel bar and a first middle vertical steel bar. The second end of the first sub-stirrup extends out of the first precast wall component. A vertical dowel bar is inserted into the second end of the first sub-stirrup. At least three second vertical steel bars are pre-embedded in the length direction at both ends of the second precast wall component, and the first end of the second stirrup is sleeved on all the second vertical steel bars; The second vertical reinforcement includes second end vertical reinforcements located at both ends, and a second intermediate vertical reinforcement located between the second end vertical reinforcements at both ends; Multiple second sub-stirrups are pre-embedded in the second precast wall component along the height direction. The first end of the second sub-stirrup is sleeved on a second end vertical steel bar and a second middle vertical steel bar. The second end of the second sub-stirrup extends out of the second precast wall component. Vertical dowel bars are inserted into the second end of the second sub-stirrup. The first sub-stirrup and the second sub-stirrup are arranged opposite to each other, and at least one of the connecting members simultaneously connects the first stirrup and the second stirrup, and the first sub-stirrup and the second stirrup.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (i) Eliminate double-wall structure and greatly improve the utilization rate of indoor usable area.

[0018] In existing modular building systems, each modular building unit uses a complete wall structure with a thickness of 150mm to 200mm to ensure its structural independence and integrity throughout the entire process of factory prefabrication, transportation, and on-site hoisting. When two modular building units are spliced ​​on-site, the complete walls are directly arranged back to back, forming a double-wall structure with a thickness of 300mm to 400mm or more, which significantly encroaches on the usable indoor area.

[0019] This invention proposes a prefabricated wall component using prefabricated single-layer wall panels. The thickness of these single-layer panels is significantly less than that of existing complete walls, meeting the requirements for modular building unit assembly and ensuring the structural integrity of each modular building unit during independent prefabrication and transportation. During on-site assembly, the first prefabricated single-layer wall panel of the first modular building unit and the second prefabricated single-layer wall panel of the second modular building unit are spaced apart and integrally connected to form a complete composite wall. This construction method fundamentally eliminates the traditional "double-wall structure" formed by two complete walls arranged back-to-back, significantly reducing the total wall thickness at the joint and thus significantly improving the utilization rate of the building's usable interior space.

[0020] (ii) The pre-embedded tie rod connectors enable convenient fixed connection and also serve as tie rod fasteners to enhance connection strength.

[0021] To achieve a reliable fixed connection between the first and second precast wall components, this invention embeds tie rods inside the first precast wall component and creates through holes on the second precast wall component corresponding to the positions of the embedded tie rods. During on-site assembly, simply pass the tie rods through the through holes and thread them onto the embedded tie rods, then tighten them to achieve rapid positioning and fixed connection between the two precast wall components.

[0022] The embedded tie rod has multiple functions: First, when pouring concrete into the gap between the two precast wall components to form a concrete layer, the tightened tie rod and the embedded tie rod can effectively resist the lateral pressure generated during the concrete pouring process, prevent the formwork from bulging or the wall from shifting, and provide stable construction conditions for the integrated pouring of concrete on site; Second, after the concrete is poured, the embedded tie rod and the tie rod together form a fastening system that runs through the two walls, and also serve as a tie reinforcement component between the two walls, significantly increasing the connection strength and integrity between the first precast wall component and the second precast wall component, ensuring that the composite wall works together in subsequent use.

[0023] (III) The edge component connection structure is ingeniously designed, the connection is reliable and the construction is convenient.

[0024] The present invention provides first edge members at both ends of the first precast wall component and second edge members at both ends of the second precast wall component, and achieves a one-to-one fixed connection through connecting components or connecting members.

[0025] Specifically, the connecting assembly includes connecting stirrups and vertical dowels. The connecting stirrups are positioned between the first and second stirrups and intersect with them simultaneously. The vertical dowels are inserted into the intersection areas. The first and second stirrups are respectively fitted onto the pre-embedded vertical reinforcing bars to achieve reliable anchorage. This connection structure is ingeniously designed. During on-site construction, the connection can be completed simply by placing the connecting stirrups between the relatively positioned first and second stirrups and inserting the vertical dowels. No welding is required, the alignment tolerance is large, the operation is simple, significantly shortening the on-site construction cycle and reducing labor costs.

[0026] Specifically, the connecting components include a vertical insertion rod and multiple forked couplings fixed to one side of the rod along its length. During on-site construction, the vertical insertion rod is simply inserted into multiple first / second stirrups. Rotating the vertical insertion rod rotates the multiple forked couplings to one side of the multiple second / first stirrups, positioning them above the corresponding second / first stirrups. Further insertion of the vertical insertion rod then engages the multiple forked couplings with the corresponding second / first stirrups. This connection method achieves simultaneous connection of multiple stirrups through only three simple actions: insertion, rotation, and insertion. It requires no welding or individual binding, offers high alignment tolerance, and is simple and quick to operate, significantly shortening the on-site construction cycle and reducing labor costs.

[0027] Alternatively, the connecting member of the present invention includes a vertical insertion rod and a plurality of forked fasteners fixed on its opposite sides and arranged along its length. During on-site construction, the vertical insertion rod is inserted from top to bottom into the gap between the first precast wall component and the second precast wall component. Rotating the vertical insertion rod causes the plurality of forked fasteners on both sides to rotate above the plurality of first stirrups and the plurality of second stirrups, respectively. The vertical insertion rod is further inserted downwards, causing the plurality of forked fasteners on both sides to be inserted into the plurality of first stirrups and the plurality of second stirrups, respectively. Alternatively, the vertical insertion rod is inserted from one side into the gap between the first precast wall component and the second precast wall component, with the plurality of forked fasteners on both sides positioned above the plurality of first stirrups and the plurality of second stirrups, respectively. The vertical insertion rod is further inserted downwards, causing the plurality of forked fasteners on both sides to be inserted into the plurality of first stirrups and the plurality of second stirrups, respectively. The connecting components of this method are equipped with forked fasteners on both sides, which can simultaneously complete the snap-fit ​​fixing of the edge components on both sides. The operation is simple and quick, without the need for welding or individual binding, which significantly shortens the on-site construction cycle and reduces labor costs.

[0028] In summary, this invention, while ensuring the independent prefabrication integrity of each modular building unit, eliminates the traditional double-wall structure by constructing a single-layer wall panel with protruding ribs, thereby improving the utilization rate of indoor space. At the same time, through the cooperation of pre-embedded tie rod connectors and through holes, the edge components are fixedly connected by connecting components or connecting members, realizing a double-wall fixing scheme that is convenient to construct and has high connection strength, combining spatial economy and structural reliability. Attached Figure Description

[0029] Figure 1 A cross-sectional view of the first prefabricated wall component in Embodiment 1 of the present invention (Embodiment 1); Figure 2 Cross-sectional view of the second prefabricated wall component in Embodiment 1 of the present invention; Figure 3A cross-sectional view of the first prefabricated wall component in Embodiment 1 of the present invention (Embodiment 2); Figure 4 Cross-sectional view of a modular building unit according to Embodiment 1 of the present invention Figure 1 ; Figure 5 Front view of a modular building unit according to Embodiment 1 of the present invention; Figure 6 Cross-sectional view of a modular building unit according to Embodiment 1 of the present invention Figure 2 ; Figure 7 A schematic diagram of the lifting lugs of the modular building unit according to Embodiment 1 of the present invention; Figure 8 A cross-sectional view of the assembly of the first modular building unit and the second modular building unit in Embodiment 1 of the present invention; Figure 9 Cross-sectional view of the assembly node of the first modular building unit and the second modular building unit in Embodiment 1 of the present invention; Figure 10 A front view of the assembly of the first modular building unit and the second modular building unit in Embodiment 1 of the present invention; Figure 11 Longitudinal sectional view (convex rib area) of the first modular building unit and the second modular building unit in Embodiment 1 of the present invention. Figure 12 Longitudinal sectional view (non-convex rib area) of the first modular building unit and the second modular building unit in Embodiment 2 of the present invention. Figure 13 Cross-sectional view of the first prefabricated wall component in Embodiment 2 of the present invention (Embodiment 1); Figure 14 A cross-sectional view of the second prefabricated wall component in Embodiment 2 of the present invention; Figure 15 Cross-sectional view of the first prefabricated wall component in Embodiment 2 of the present invention (Embodiment 2); Figure 16 Cross-sectional view of the modular building unit in Embodiment 2 of the present invention Figure 1 ; Figure 17 A cross-sectional view of the assembly of the first modular building unit and the second modular building unit in Embodiment 2 of the present invention; Figure 18 Cross-sectional view of the assembly node of the first modular building unit and the second modular building unit in Embodiment 2 of the present invention; Figure 19 A schematic diagram illustrating the structure and process of the connection method between the first edge member and the second edge member in Embodiment 3 of the present invention; Figure 20A schematic diagram of the structure of the second connection method between the first edge member and the second edge member in Embodiment 3 of the present invention; Figure 21 A schematic diagram of the connection method between the first edge member and the second edge member in Embodiment 3 of the present invention; Figure 22 Longitudinal sectional view of the first modular building unit and the second modular building unit in Embodiment 3 of the present invention; Figure 23 A schematic diagram of the connecting component in Embodiment 4 of the present invention; Figure 24 A schematic diagram of the structure and process of the connection method between the first edge member and the second edge member in Embodiment 4 of the present invention; Figure 25 A schematic diagram of the structure of the second connection method between the first edge member and the second edge member in Embodiment 4 of the present invention; Figure 26 A schematic diagram of the structure of the third connection method between the first edge member and the second edge member in Embodiment 4 of the present invention; Figure 27 Longitudinal sectional view of the first modular building unit and the second modular building unit in Embodiment 4 of the present invention; Figure 28 A schematic diagram of the connecting component in Embodiment 5 of the present invention; Figure 29 A schematic diagram of the structure and process of the connection method between the first edge member and the second edge member in Embodiment 5 of the present invention; Figure 30 A schematic diagram of the structure of the second connection method between the first edge member and the second edge member in Embodiment 5 of the present invention; Figure 31 A schematic diagram of the structure of the third connection method between the first edge member and the second edge member in Embodiment 5 of the present invention; Figure 32 Longitudinal sectional view of the first modular building unit and the second modular building unit in Embodiment 5 of the present invention.

[0030] Explanation of the reference numerals in the attached drawings: 100 - First precast wall component; 101 - First precast single-layer wall panel; 102 - First precast protruding rib; 103 - First through hole; 105 - First wall end; 106 - First edge component; 106A - First sub-stirrup; 107 - First embedded tie rod; 108 - First tie rod rope loop; 200 - Second precast wall component; 201 - Second precast single-layer wall panel; 202 - Second precast protruding rib; 203 - Second through hole; 205 - Second wall end; 206 - Second edge component; 206A - Second sub-stirrup; 207 - Second precast... Embedded tie bar 208 - Second tie bar rope loop 300 - Precast integral interior wall 400 - Precast integral exterior wall 500 - Precast composite base slab 600 - Precast composite floor slab 700 - Lifting lug 800' - Temporary tie rod 901 - Embedded vertical reinforcement 901A - End vertical reinforcement 901B - Middle vertical reinforcement 902 - Vertical dowel bar 1000 - Connecting stirrup 1100 - Connecting tie bar 1200 - Connecting component 1201 - Vertical dowel bar body 1201 - Fork joint buckle body 10 - First modular building unit 20 - Second modular building unit. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a prefabricated wall component, which mainly includes a first prefabricated wall component 100 and a second prefabricated wall component 200.

[0037] In this embodiment, the first prefabricated wall component 100 includes a first prefabricated single-layer wall panel 101 and a first prefabricated protruding rib 102.

[0038] The first precast single-layer wall panel 101 is a thin reinforced concrete slab structure with a thickness of 40mm to 50mm, preferably 50mm in this embodiment. The first precast single-layer wall panel 101 is cast in a mold in the factory and has internal reinforcing bars and distribution bars to meet the structural load-bearing requirements.

[0039] The first precast rib 102 is integrally cast with the first precast single-layer wall panel 101. The first precast rib 102 is located on one outer wall of the first precast single-layer wall panel 101, protruding outward from the surface of that outer wall. The first precast rib 102 extends continuously along the length of the first precast single-layer wall panel 101, and its cross-sectional shape is rectangular, with its width and height determined according to structural calculations. The first precast rib 102 is used to increase the out-of-plane stiffness and flexural bearing capacity of the first precast single-layer wall panel 101.

[0040] Figure 1 As shown, the first prefabricated single-layer wall panel 101 and the first prefabricated protruding rib 102 are provided with first through holes 103. The first through holes 103 are spaced apart along the length of the prefabricated protruding rib 102, penetrating the first prefabricated protruding rib 102 and the first prefabricated single-layer wall panel 101, for subsequent installation of temporary tie rods. The spacing between adjacent first through holes 103 is determined according to the structural stress requirements.

[0041] In this embodiment, multiple rows of first tie rope loops 108 are pre-embedded along the length of the first prefabricated single-layer wall panel 101, and the multiple first tie rope loops 108 in each row are arranged along the height direction of the first prefabricated single-layer wall panel 101. Specifically, the multiple rows of first tie rope loops 108 are respectively pre-embedded in the area of ​​the first prefabricated single-layer wall panel 101 corresponding to the first prefabricated protruding rib 102, that is, each row of first tie rope loops 108 is located within the width range of the first prefabricated protruding rib 102 in the horizontal direction. The first tie rope loops 108 in the same row are spaced apart along the height direction of the wall panel, and the spacing between adjacent first tie rope loops 108 is determined according to the structural stress requirements.

[0042] Multiple rows of pre-embedded vertical steel bars 901 are also pre-embedded along the length of the first precast single-layer wall panel 101. One end of the first tie rope loop 108 in the same row is pre-embedded in the first precast single-layer wall panel 101 and fitted onto the pre-embedded vertical steel bars 901 in the same row, while the other end extends out of the first precast single-layer wall panel 101 so that it can be connected to the second tie rope loop 208 of the second precast wall component 200 on the other side during on-site assembly.

[0043] like Figure 2 As shown, the second prefabricated wall component 200 includes a second prefabricated single-layer wall panel 201 and a second prefabricated protruding rib 202. The second prefabricated single-layer wall panel 201 and the second prefabricated protruding rib 202 are integrally cast in a factory, with the second prefabricated protruding rib 202 located on one outer wall side of the second prefabricated single-layer wall panel 201. The thickness of the second prefabricated single-layer wall panel 201 is the same as the thickness of the first prefabricated single-layer wall panel 101, also ranging from 40mm to 50mm, preferably 50mm in this embodiment. A second through hole 203 is provided on both the second prefabricated single-layer wall panel 201 and the second prefabricated protruding rib 202.

[0044] Figure 2 As shown, the second through holes 203 are spaced apart along the length of the second prefabricated ribs 202, penetrating the second prefabricated ribs 202 and the second prefabricated single-layer wall panel 201, for subsequent installation of temporary tie rods. The spacing between adjacent first through holes 103 is determined according to the structural stress requirements.

[0045] In this embodiment, multiple rows of second tie rope loops 208 are pre-embedded along the length of the second precast single-layer wall panel 201, and the multiple second tie rope loops 208 in each row are arranged along the height direction of the second precast single-layer wall panel 201. Specifically, the multiple rows of second tie rope loops 208 are respectively pre-embedded in the area of ​​the second precast single-layer wall panel 201 corresponding to the second precast protruding rib 202, that is, each row of second tie rope loops 208 is located within the width range of the second precast protruding rib 202 in the horizontal direction. The second tie rope loops 208 in the same row are spaced apart along the height direction of the wall panel, and the spacing between adjacent second tie rope loops 208 is determined according to the structural stress requirements.

[0046] Multiple rows of embedded vertical steel bars 901 are also pre-embedded along the length of the second precast single-layer wall panel 201. One end of the second tie rope loop 208 in the same row is pre-embedded in the second precast single-layer wall panel 201 and fitted onto the pre-embedded vertical steel bars 901 in the same row, while the other end extends out of the second precast single-layer wall panel 201 so as to be connected to the first tie rope loop 108 of the first precast wall component 100 on the other side during on-site assembly.

[0047] like Figure 3 As shown, in another optional form of this embodiment, the thickness at both ends of the first precast single-layer wall panel 101 is less than the thickness in the middle. Specifically, the two ends of the first precast single-layer wall panel 101 are the first wall end 105, with a thickness of 40 mm, and the thickness in the middle region is 50 mm. Similarly, the two ends of the second precast single-layer wall panel 201 are the second wall end 205, with the thickness of the second wall end 205 being less than the thickness in the middle, having a thickness of 40 mm at both ends and 50 mm in the middle. This variable cross-section structural design, on the one hand, reduces the material usage and self-weight by thinning the wall ends, and on the other hand, maintains a larger thickness in the middle to meet the structural stress requirements.

[0048] like Figures 4 to 6 As shown, the prefabricated wall components of this embodiment are applied in modular building units. Taking the first modular building unit 10 as an example, it includes a first prefabricated wall component 100 and a second prefabricated wall component 200 arranged opposite each other, a prefabricated integral exterior wall 400 on the left, a prefabricated integral interior wall 300 on the right, a prefabricated composite base slab 500 at the bottom, and a prefabricated composite floor slab 600 at the top. The first prefabricated wall component 100 and the second prefabricated wall component 200 are located on the front and rear sides of the first modular building unit 10, serving as the main exterior wall or partition wall enclosure structure.

[0049] like Figure 5As shown, viewed from the outside of the first modular building unit 10, the first prefabricated wall component 100 is arranged along the width of the unit. A first prefabricated rib 102 is provided on the inner wall of the first prefabricated single-layer wall panel 101. Multiple sets of first through holes 103 are arranged at intervals along the length of the first prefabricated rib 102. The protruding end of the first tie rope loop 108 protrudes from the surface of the first prefabricated rib 102. First wall end pieces 105 are respectively provided at both ends of the first prefabricated single-layer wall panel 101, and these first wall end pieces 105 are used to connect with the prefabricated single-layer wall panel end pieces of other modular building units.

[0050] like Figure 6 As shown, lifting lugs 700 are provided on both sides of the top of the first modular building unit 10. The lifting lugs 700 are used for hoisting, transporting and positioning the first modular building unit 10 on site after it has been prefabricated in the factory.

[0051] like Figure 7 As shown, the lifting lug 700 is a metal component, including a lifting ring and an anchor plate. The anchor plate is detachably and fixedly connected to the precast wall component. The lifting ring is exposed on the surface of the component, which facilitates the connection of the lifting wire rope or hook. The lifting lug 700 is removed after the lifting is in place.

[0052] like Figure 8 As shown, at the construction site, the first modular building unit 10 and the second modular building unit 20 are prefabricated in the factory and transported to the site. The first modular building unit 10 includes the aforementioned first prefabricated wall component 100, and the second modular building unit 20 includes the aforementioned second prefabricated wall component 200. After the first modular building unit 10 and the second modular building unit 20 are positioned by hoisting equipment, they are arranged at intervals relative to each other.

[0053] Specifically, the first precast wall component 100 of the first modular building unit 10 and the second precast wall component 200 of the second modular building unit 20 are arranged opposite each other, that is, the first precast protruding rib 102 and the second precast protruding rib 202 face to face, the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201 are located on the outer side (i.e., facing away from each other), and the first precast protruding rib 102 and the second precast protruding rib 202 are located on the inner side. A certain distance is maintained between the first precast protruding rib 102 and the second precast protruding rib 202, and this distance forms the pouring space for the post-cast concrete.

[0054] like Figure 9As shown, the first prefabricated rib 102 divides one side of the outer wall of the first prefabricated single-layer wall panel 101 into multiple first non-rib regions, i.e., the regions between adjacent first prefabricated ribs 102. Similarly, the second prefabricated rib 202 divides one side of the outer wall of the second prefabricated single-layer wall panel 201 into multiple second non-rib regions, i.e., the regions between adjacent second prefabricated ribs 202. The first prefabricated rib 102 and the second prefabricated rib 202 are arranged opposite each other at intervals, i.e., the positions of the first prefabricated rib 102 and the second prefabricated rib 202 correspond one-to-one and are opposite to each other; correspondingly, the first non-rib regions and the second non-rib regions are also arranged opposite each other at intervals.

[0055] In this embodiment, multiple rows of first tie rope loops 108 are respectively embedded in the area of ​​the first prefabricated single-layer wall panel 101 corresponding to the first prefabricated protruding rib 102, with the other end of the first tie rope loop 108 extending out of the first prefabricated protruding rib 102; multiple rows of second tie rope loops 208 are respectively embedded in the area of ​​the second prefabricated single-layer wall panel 201 corresponding to the second prefabricated protruding rib 202, with the other end of the second tie rope loop 208 extending out of the second prefabricated protruding rib 202. During on-site assembly, the first modular building unit 10 and the second modular building unit 20 are first hoisted into place, and then the first tie rope loops 108 and the second tie rope loops 208 are connected and the vertical reinforcing bars 902 are inserted.

[0056] Specifically, such as Figure 8 and Figure 9 As shown, the multiple first tie rope loops 108 of the first modular building unit 10 are correspondingly set with the multiple second tie rope loops 208 of the second modular building unit 20. During on-site operation, the protruding ends of the opposing first tie rope loops 108 and second tie rope loops 208 are pulled closer and aligned. Then, the vertical insert 902 passes sequentially from top to bottom through the multiple first tie rope loops 108 and second tie rope loops 208 in the same column, so that the first precast wall component 100 and the second precast wall component 200 are connected by the first tie rope loops 108, the second tie rope loops 208, and the vertical insert 902. In this embodiment, the vertical insert 902 is inserted between the first precast rib 102 and the second precast rib 202 (i.e., within the rib spacing area), and sequentially passes through the first tie rope loops 108 and the second tie rope loops 208.

[0057] Meanwhile, temporary tie rods 800' are used to pass through the first through hole 103 on the first modular building unit 10 and the second through hole 203 on the second modular building unit 20, and are tightened with nuts to temporarily fix and connect the first precast wall component 100 and the second precast wall component 200, forming a complete composite wall. The temporary tie rods 800' can be removed after the subsequent concrete pouring is completed, or they can be retained as auxiliary connecting parts.

[0058] like Figure 8 and Figure 9 As shown, the first precast wall component 100 of the first modular building unit 10 and the second precast wall component 200 of the second modular building unit 20 are arranged opposite each other. The first tie rope sleeve 108 and the second tie rope sleeve 208 are opposite each other, and the vertical insert 902 passes through the opposite first tie rope sleeve 108 and second tie rope sleeve 208. At the same time, the temporary tie rod 800' passes through the first through hole 103 and the second through hole 203 and is fastened by a nut.

[0059] In this embodiment, first edge members 106 are respectively provided at both ends of the first prefabricated single-layer wall panel 101, and second edge members 206 are respectively provided at both ends of the second prefabricated single-layer wall panel 201. The first prefabricated wall member 100 of the first modular building unit 10 and the second prefabricated wall member 200 of the second modular building unit 20 are fixedly connected at both ends through the first edge members 106 and the second edge members 206, respectively. The first edge members 106 and the second edge members 206 are pre-embedded stirrups used to realize the connection between the prefabricated wall members of adjacent modular building units.

[0060] After the above connection is completed, concrete is poured into the gap between the first precast wall component 100 of the first modular building unit 10 and the second precast wall component 200 of the second modular building unit 20 to form a cast-in-place concrete layer. This concrete layer completely encloses and connects the first precast wall component 100, the second precast wall component 200, the first tie rope sleeve 108, the second tie rope sleeve 208, the vertical reinforcing bars 902, the temporary tie rods 800' (if not removed), and the embedded vertical reinforcing bars 901 into a whole. After the concrete has cured to the design strength, the first precast wall component 100 and the second precast wall component 200 are integrated and combined into a complete composite wall.

[0061] In this embodiment, the thickness of the first prefabricated single-layer wall panel 101 and the second prefabricated single-layer wall panel 201 is 40mm to 50mm. The total thickness of the combined wall formed after the first prefabricated wall component 100 and the second prefabricated wall component 200 are connected is much smaller than the thickness of the double wall structure formed by splicing two complete wall pieces back to back in the prior art, thereby significantly reducing the encroachment on the indoor usable space.

[0062] like Figures 10 to 12As shown in the diagram, this embodiment illustrates the assembly method of the upper and lower first and second modular building units. The upper first and second modular building units are connected to the lower first and second modular building units, and the upper and lower modular building units are integrated during the post-concrete pouring process, thereby enhancing the overall structural strength of the modular building.

[0063] Example 2 like Figures 13 to 18 As shown, this embodiment provides a prefabricated wall component, which differs from Embodiment 1 only in the pre-embedded positions of the first tie rope sleeve 108 and the second tie rope sleeve 208. In this embodiment, the first tie rope sleeve 108 is pre-embedded in the non-protruding rib area of ​​the first prefabricated single-layer wall panel 101, rather than in the protruding rib area; the second tie rope sleeve 208 is pre-embedded in the non-protruding rib area of ​​the second prefabricated single-layer wall panel 201, rather than in the protruding rib area. During on-site assembly, vertical reinforcing bars 902 are inserted between the non-protruding rib areas and pass through the tie rope sleeve 107 to achieve connection.

[0064] Example 3 like Figure 19 and Figure 22 The diagram shows the structure and process of a connection method 1 between the first edge member 106 and the second edge member 206 in this embodiment. In this connection method, the first edge member 106 includes a plurality of first stirrups embedded along the height direction of the first prefabricated wall member 100 (the diagram shows the overall structure of the first edge member 106, which contains a plurality of first stirrups). The second edge member 206 includes a plurality of second stirrups embedded along the height direction of the second prefabricated wall member 200 (the diagram shows the overall structure of the second edge member 206, which contains a plurality of second stirrups). During on-site assembly of the first modular building unit 10 and the second modular building unit 20, the plurality of first stirrups and the plurality of second stirrups are fixedly connected one-to-one by connecting components.

[0065] The connecting assembly includes a connecting stirrup 1000 and a vertical insert 902. The first stirrup and the second stirrup are arranged opposite to each other. The connecting stirrup 1000 is disposed between the first stirrup and the second stirrup, and intersects with both the first stirrup and the second stirrup. The vertical insert 902 is inserted into the intersection area between the connecting stirrup 1000 and the first stirrup, and into the intersection area between the connecting stirrup 1000 and the second stirrup.

[0066] Two embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the first precast wall component 100. One end of the first stirrup, embedded in the first precast wall component 100, is sleeved on the two embedded vertical reinforcing bars 901. Two embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200. One end of the second stirrup, embedded in the second precast wall component 200, is sleeved on the two embedded vertical reinforcing bars 901. Vertical inserts 902 are respectively inserted at both ends of the intersection area between the connecting stirrup 1000 and the first stirrup, and vertical inserts 902 are respectively inserted at both ends of the intersection area between the connecting stirrup 1000 and the second stirrup.

[0067] The first modular building unit 10 and the second modular building unit 20 are hoisted into place, so that the first precast wall component 100 and the second precast wall component 200 are spaced apart and opposite to each other, and the first edge component 106 and the second edge component 206 are opposite to each other. The on-site construction process of connection method one is as follows: Step 1: Insert the connecting stirrup 1000 into the space between the first edge member 106 and the second edge member 206 from one side of the wall end.

[0068] Step 2: After the connecting stirrup 1000 is inserted into place, it is simultaneously positioned opposite and intersecting with the first stirrup in the first edge member 106 and the second stirrup in the second edge member 206.

[0069] Step 3: On the side of the first edge member 106, insert the vertical dowel bar 902 into the intersection area between the connecting stirrup 1000 and the first stirrup; on the side of the second edge member 206, insert the vertical dowel bar 902 into the intersection area between the connecting stirrup 1000 and the second stirrup. The vertical dowel bar 902 passes through multiple intersection areas at the same height from top to bottom.

[0070] After completing the above steps, the first edge member 106 and the second edge member 206 are fixedly connected by the connecting stirrup 1000 and the vertical dowel bar 902. This connection method requires no welding, is easy to operate, and has a large alignment tolerance.

[0071] Figure 20 This is a schematic diagram of a second connection method between the first edge member and the second edge member according to an embodiment of the present invention. Figure 20 As shown, the difference between this connection method and connection method one lies in the number of pre-embedded vertical steel bars and the setting of pre-embedded tie bars.

[0072] In this connection method, the connection assembly includes connecting stirrups 1000, vertical reinforcing bars 902, and connecting tie bars 1100. At least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the first precast wall component 100. One end of the first stirrup, embedded within the first precast wall component 100, is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends.

[0073] Multiple first embedded tie bars 107 are pre-embedded along the height direction in the first precast wall component 100. One end of the first embedded tie bar 107 is sleeved on the middle vertical steel bar 901B, and the other end of the first embedded tie bar 107 extends out of the first precast wall component 100 and is arranged to cross the connecting stirrup 1000. The vertical dowel bar 902 is inserted in the intersection area between the first embedded tie bar 107 and the connecting stirrup 1000.

[0074] Similarly, at least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200. One end of the second stirrup embedded in the second precast wall component 200 is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends. A plurality of second embedded tie bars 207 are pre-embedded along the height direction in the second precast wall component 200. One end of the second embedded tie bar 207 is sleeved on the intermediate vertical reinforcing bar 901B, and the other end of the second embedded tie bar 207 extends out of the second precast wall component 200 and intersects with the connecting stirrup 1000. The vertical insert 902 is inserted in the intersection area between the second embedded tie bar 207 and the connecting stirrup 1000.

[0075] The first embedded tie bar 107 and the second embedded tie bar 207 are arranged opposite to each other. The connecting tie bar 1100 is located on one side of the first embedded tie bar 107 and the second embedded tie bar 207, and the middle part of the connecting stirrup 1000 is connected through the connecting tie bar 1100. Multiple connecting tie bars 1100 are arranged along the height direction, and are respectively connected to the connecting stirrup 1000 at each height position, so that multiple connecting stirrups 1000 form an integral skeleton through the connecting tie bars 1100.

[0076] The on-site construction process of connection method two is similar to that of connection method one, except that after the connecting stirrup 1000 is inserted into place, it is simultaneously intersected with the protruding ends of the first pre-embedded tie bar 107 and the second pre-embedded tie bar 207. The vertical insert bar 902 is inserted into the intersection area between the first pre-embedded tie bar 107 and the connecting stirrup 1000, and the intersection area between the second pre-embedded tie bar 207 and the connecting stirrup 1000, respectively, to achieve a fixed connection.

[0077] Figure 21 This is a structural schematic diagram of a third connection method between the first edge member and the second edge member according to an embodiment of the present invention. Figure 21 As shown, the difference between this connection method and connection method two is that sub-stirrups are used instead of pre-embedded tie bars.

[0078] In this connection method, the connection assembly includes connecting stirrups 1000, vertical reinforcing bars 902, and connecting tie bars 1100. At least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the first precast wall component 100. One end of the first stirrup, embedded within the first precast wall component 100, is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends.

[0079] Multiple first sub-stirrups 106A are pre-embedded in the first precast wall component 100 along the height direction. One end of the first sub-stirrup 106A is sleeved on a terminal vertical steel bar 901A and a middle vertical steel bar 901B. The other end of the first sub-stirrup 106A extends out of the first precast wall component 100 and is arranged to cross the connecting stirrup 1000. The vertical dowel bar 902 is inserted in the intersection area between the first sub-stirrup 106A and the connecting stirrup 1000.

[0080] Similarly, at least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200. One end of the second stirrup embedded in the second precast wall component 200 is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends. Multiple second sub-stirrups 206A are pre-embedded along the height direction in the second precast wall component 200. One end of the second sub-stirrup 206A is sleeved on one of the end vertical reinforcing bars 901A and one of the intermediate vertical reinforcing bars 901B. The other end of the second sub-stirrup 206A extends out of the second precast wall component 200 and intersects with the connecting stirrup 1000. The vertical insert 902 is inserted in the intersection area between the second sub-stirrup 206A and the connecting stirrup 1000.

[0081] The first sub-stirrup 106A and the second sub-stirrup 206A are arranged opposite to each other. The connecting tie 1100 is located on one side of the first sub-stirrup 106A and the second sub-stirrup 206A, and the middle part of the connecting stirrup 1000 is connected by the connecting tie 1100. Multiple connecting ties 1100 are arranged along the height direction, and are respectively connected to the connecting stirrups 1000 at each height position.

[0082] The on-site construction process for connection method three is similar to that for connection method two. The difference is that the component extending out of the precast wall component and intersecting with the connecting stirrup 1000 is a sub-stirrup (first sub-stirrup 106A, second sub-stirrup 206A), rather than a pre-embedded tie bar. Sub-stirrups have better integrity and anchorage performance compared to pre-embedded tie bars.

[0083] In this embodiment, the first prefabricated wall component 100 of the first modular building unit 10 and the second prefabricated wall component 200 of the second modular building unit 20 are arranged at intervals opposite to each other.

[0084] At both ends of the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201, the first edge member 106 and the second edge member 206 are fixedly connected by the connection methods one, two, or three described above. Specifically, the connecting stirrup 1000 is disposed between the first edge member 106 and the second edge member 206, and the vertical dowel 902 is inserted into the intersection area to form a reliable connection between the edge members at both ends.

[0085] In the middle of the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201, the tie rod 800 passes through the through hole 203 and is threadedly connected and tightened to the pre-embedded tie connector 103 (tie bolt) to achieve a fixed connection in the middle.

[0086] Example 4 Figure 23 This is a schematic diagram of the connecting member in this embodiment. The connecting member 1200 is used to connect the first edge member 106 and the second edge member 206. The connecting member 1200 includes a vertical insertion rod 1201 and a plurality of forked fasteners 1202 fixed to one side of the vertical insertion rod 1201 and arranged along its length. The plurality of forked fasteners 1202 are spaced apart along the length of the vertical insertion rod 1201, and the spacing between adjacent forked fasteners 1202 matches the spacing of the first stirrup / second stirrup along the height of the wall.

[0087] The fork-joint buckle 1202 is a U-shaped or C-shaped snap-fit ​​structure, and its opening direction is the same as the axial direction of the vertical insertion rod 1201. The fork-joint buckle 1202 is used to insert into the corresponding stirrup after being rotated into position, so as to achieve quick connection.

[0088] Figure 24 This is a schematic diagram illustrating the structure and process of a first edge member and a second edge member connection method according to an embodiment of the present invention. Figure 24 and Figure 27 As shown, in this connection method, the first edge member 106 includes a plurality of first stirrups embedded along the height direction of the first precast wall member 100 (the figure shows the overall structure of the first edge member 106, which contains a plurality of first stirrups), and the second edge member 206 includes a plurality of second stirrups embedded along the height direction of the second precast wall member 200 (the figure shows the overall structure of the second edge member 206, which contains a plurality of second stirrups). The plurality of first stirrups and the plurality of second stirrups are arranged opposite to each other.

[0089] The first end of the first stirrup is embedded in the first precast wall component 100, and the second end extends out of the first precast wall component 100. The first end of the second stirrup is embedded in the second precast wall component 200, and the second end extends out of the second precast wall component 200. The second ends of the first stirrup and the second stirrup are respectively connected by the connecting component 1200.

[0090] In this connection method, vertical insert bars 902 are inserted into both ends of the second end of the first stirrup, and vertical insert bars 902 are inserted into both ends of the second end of the second stirrup. Specifically, the first stirrup is a ring stirrup, and its protruding end forms a closed insertion space for the vertical insert bars 902 to be inserted and anchored; the second stirrup is also a ring stirrup, and its protruding end forms a closed insertion space for the vertical insert bars 902 to be inserted and anchored.

[0091] Two embedded vertical steel bars 901 are pre-embedded at both ends of the first precast wall component 100 along its length, and the first end of the first stirrup is sleeved on the two embedded vertical steel bars 901. Two embedded vertical steel bars 901 are pre-embedded at both ends of the second precast wall component 200 along its length, and the first end of the second stirrup is sleeved on the two embedded vertical steel bars 901.

[0092] The on-site construction process for connection method one is as follows: Step 1: Hoist the first modular building unit 10 and the second modular building unit 20 into place, so that the first precast wall component 100 and the second precast wall component 200 are spaced apart and opposite to each other, and the first edge component 106 and the second edge component 206 are opposite to each other. Insert the connecting component 1200 as a whole into the second stirrup (i.e., insert it from the protruding end opening of the second stirrup, so that the vertical insertion rod 1201 passes through the internal space of multiple second stirrups). At this time, the forked fastener 1202 of the connecting component 1200 is located on one side of the second stirrup.

[0093] Step 2: Rotate the vertical insertion rod 1201 to drive the multiple fork-joint buckles 1202 to rotate to one side of the multiple first stirrups, and the multiple fork-joint buckles 1202 are respectively located above the multiple first stirrups (at this time, the opening of the fork-joint buckle 1202 is aligned with the first stirrup).

[0094] Step 3: Insert the vertical insertion rod 1201 further down, causing multiple forked fasteners 1202 to be inserted into the first stirrup (the U-shaped opening of the forked fastener 1202 is inserted into the steel bar of the first stirrup), thus completing the rapid connection between the first edge member 106 and the second edge member 206.

[0095] In the above steps, the connecting component 1200 can also be inserted into the first stirrup as a whole, and after rotation, the fork-joint buckle 1202 can be inserted into the second stirrup. The principle and operation are the same.

[0096] Figure 25 This is a schematic diagram of the second connection method between the first edge member and the second edge member in this embodiment. Figure 25 As shown, the difference between this connection method and connection method one lies in the number of pre-embedded vertical steel bars and the setting of pre-embedded tie bars.

[0097] In this connection method, the middle part of the second end of the first stirrup is connected to the middle part of the second end of the second stirrup by at least one of the connecting members 1200.

[0098] At least three pre-embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the first precast wall component 100, and the first end of the first stirrup is sleeved on all the pre-embedded vertical reinforcing bars 901. The pre-embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends.

[0099] Multiple first embedded tie bars 107 are pre-embedded along the height direction in the first precast wall component 100. The first end of the first embedded tie bar 107 is sleeved on the middle vertical steel bar 901B. The second end of the first embedded tie bar 107 extends out of the first precast wall component 100. A vertical dowel bar 902 is inserted into the second end of the first embedded tie bar 107.

[0100] Similarly, at least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200, and the first end of the second stirrup is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends. A plurality of second embedded tie bars 207 are pre-embedded along the height direction in the second precast wall component 200. The first end of the second embedded tie bar 207 is sleeved on the intermediate vertical reinforcing bar 901B, the second end of the second embedded tie bar 207 extends out of the second precast wall component 200, and a vertical dowel bar 902 is inserted into the second end of the second embedded tie bar 207.

[0101] The first embedded tie bar 107 and the second embedded tie bar 207 are arranged opposite to each other, and the connecting member 1200 connecting the middle of the second end of the first stirrup and the middle of the second end of the second stirrup is located on one side of the first embedded tie bar 107 and the second embedded tie bar 207.

[0102] The on-site construction process for connection method two is as follows: After hoisting the first modular building unit 10 and the second modular building unit 20 into place, the connecting member 1200 is inserted from one side, positioned between the middle of the second end of the first stirrup and the middle of the second end of the second stirrup, and located on one side of the first embedded tie bar 107 and the second embedded tie bar 207. The vertical insertion rod 1201 of the connecting member 1200 is rotated, causing the forked coupling body 1202 to rotate above the first stirrup and / or the second stirrup, and then inserted downwards to engage the forked coupling body 1202 with the corresponding stirrup, completing the connection. Vertical insertion bars 902 are respectively inserted into the second ends of the first embedded tie bar 107 and the second embedded tie bar 207 to achieve end anchoring.

[0103] Figure 26 This is a structural schematic diagram of the third connection method between the first edge member and the second edge member in this embodiment. Figure 26 As shown, the difference between this connection method and connection method two is that sub-stirrups are used instead of pre-embedded tie bars.

[0104] In this connection method, the middle part of the second end of the first stirrup is connected to the middle part of the second end of the second stirrup by at least one of the connecting members 1200.

[0105] At least three pre-embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the first precast wall component 100, and the first end of the first stirrup is sleeved on all the pre-embedded vertical reinforcing bars 901. The pre-embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends.

[0106] Multiple first sub-stirrups 106A are pre-embedded in the first precast wall component 100 along the height direction. The first end of the first sub-stirrup 106A is sleeved on a terminal vertical steel bar 901A and a middle vertical steel bar 901B. The second end of the first sub-stirrup 106A extends out of the first precast wall component 100. A vertical dowel bar 902 is inserted into the second end of the first sub-stirrup 106A.

[0107] Similarly, at least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200, and the first end of the second stirrup is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends. A plurality of second sub-stirrups 206A are pre-embedded along the height direction in the second precast wall component 200. The first end of the second sub-stirrup 206A is sleeved on one of the end vertical reinforcing bars 901A and one of the intermediate vertical reinforcing bars 901B. The second end of the second sub-stirrup 206A extends out of the second precast wall component 200, and a vertical dowel 902 is inserted into the second end of the second sub-stirrup 206A.

[0108] The first sub-stirrup 106A and the second sub-stirrup 206A are arranged opposite to each other, and at least one of the connecting members 1200 simultaneously connects the first stirrup and the second stirrup, and the first sub-stirrup 106A and the second sub-stirrup 206A.

[0109] The on-site construction process for connection method three is similar to that for connection method two: After hoisting the first modular building unit 10 and the second modular building unit 20 into place, the connecting member 1200 is inserted and positioned between the middle of the second end of the first stirrup and the middle of the second end of the second stirrup, and on one side of the first sub-stirrup 106A and the second sub-stirrup 206A. The vertical insertion rod 1201 of the connecting member 1200 is rotated, causing the forked coupling body 1202 to rotate above the corresponding stirrup, and then inserted downwards to engage the forked coupling body 1202 with the stirrup, completing the connection. Simultaneously, vertical insert bars 902 are inserted into the second ends of the first sub-stirrup 106A and the second sub-stirrup 206A respectively, achieving end anchoring.

[0110] Compared with the pre-embedded tie bars in connection method two, the sub-stirrups in connection method three have better integrity and anchorage performance, and are suitable for connection nodes with higher stress requirements.

[0111] In this embodiment, the first prefabricated wall component 100 of the first modular building unit 10 and the second prefabricated wall component 200 of the second modular building unit 20 are arranged opposite each other at intervals.

[0112] At both ends of the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201, the first edge member 106 and the second edge member 206 are fixedly connected by the connection methods one, two, or three described above. Specifically, the connecting member 1200 is disposed between the first edge member 106 and the second edge member 206, the vertical insertion rod 1201 is inserted into the stirrup, and the forked buckle 1202 is inserted into the corresponding stirrup, so that the edge members at both ends form a reliable connection.

[0113] In the middle of the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201, the tie rod 800 passes through the through hole 203 and is threadedly connected and tightened to the pre-embedded tie connector 103 (tie bolt) to achieve a fixed connection in the middle.

[0114] After all connections are completed, concrete is poured into the gap between the first precast wall component 100 and the second precast wall component 200 to form a concrete layer. This layer encloses the connecting components at both ends, the tie rods 800 in the middle, and the embedded vertical steel bars 901, forming a whole. This achieves an integrated connection between the first precast wall component 100 and the second precast wall component 200, assembling them into a complete wall.

[0115] Example 5 Figure 28 This is a structural schematic diagram of the connecting component in this embodiment. Figure 28As shown, the connecting member 1200 is a quick-connect connector, including a vertical insertion rod 1201 and multiple forked fasteners 1202 fixedly disposed on both sides of the vertical insertion rod 1201. The vertical insertion rod 1201 is a long strip-shaped member, its length extending along the height direction of the precast wall component. The multiple forked fasteners 1202 are arranged at intervals along the height direction of the vertical insertion rod 1201, and their number and spacing correspond one-to-one with the number and spacing of the first stirrups in the first edge component 106 and the second stirrups in the second edge component 206.

[0116] The fork-joint buckle 1202 is a U-shaped or C-shaped open component, the opening size of which is adapted to the diameter of the stirrup, and is used to fasten onto the stirrup to achieve snap-fit ​​fixation. The fork-joint buckle 1202 is fixedly connected to the vertical insertion rod 1201 (which can be welded or integrally formed).

[0117] Figure 29 This is a schematic diagram illustrating the structure and process of a connection method between the first edge member and the second edge member in this embodiment. Figure 29 and Figure 32 As shown, in this connection method, the first edge member 106 includes a plurality of first stirrups embedded along the height direction of the first precast wall member 100 (the figure shows the overall structure of the first edge member 106, which contains a plurality of first stirrups), and the second edge member 206 includes a plurality of second stirrups embedded along the height direction of the second precast wall member 200 (the figure shows the overall structure of the second edge member 206, which contains a plurality of second stirrups). The plurality of first stirrups and the plurality of second stirrups are arranged opposite to each other.

[0118] The second end of the first stirrup extends out of the first precast wall component 100, and the second end of the second stirrup extends out of the second precast wall component 200. Vertical reinforcing bars 902 are inserted into the inner ends of the second ends of the first stirrup and the second stirrup.

[0119] Two embedded vertical steel bars 901 are pre-embedded at both ends of the first precast wall component 100 along its length, and the first end of the first stirrup is sleeved on the two embedded vertical steel bars 901. Two embedded vertical steel bars 901 are pre-embedded at both ends of the second precast wall component 200 along its length, and the first end of the second stirrup is sleeved on the two embedded vertical steel bars 901.

[0120] The on-site construction process for connection method one is as follows: Step 1: Hoist the first modular building unit 10 and the second modular building unit 20 into place, so that the first precast wall component 100 and the second precast wall component 200 are set at intervals opposite each other, the first edge component 106 and the second edge component 206 are opposite each other, and the multiple first stirrups and the multiple second stirrups are opposite each other one by one.

[0121] Installation method A (lateral insertion): The vertical insertion rod 1201 of the connecting member 1200 is inserted from one side (i.e. along the length direction of the first precast wall member 100 and the second precast wall member 200) into the gap between the first precast wall member 100 and the second precast wall member 200. The multiple forked fasteners 1202 on both sides of the vertical insertion rod 1201 are respectively located above the multiple first stirrups and the multiple second stirrups.

[0122] Installation method B (insertion from top to bottom followed by rotation): Insert the vertical insertion rod 1201 of the connecting member 1200 from top to bottom into the gap between the first precast wall member 100 and the second precast wall member 200. At this time, the forked fastener 1202 is not yet aligned with the stirrup. Then rotate the vertical insertion rod 1201, causing the multiple forked fasteners 1202 on both sides to rotate above the multiple first stirrups and the multiple second stirrups respectively.

[0123] Step 2: The vertical insertion rod 1201 is further inserted downwards, causing the multiple fork-shaped fasteners 1202 on both sides to be inserted into the multiple first stirrups and multiple second stirrups respectively. The U-shaped or C-shaped openings of the fork-shaped fasteners 1202 are fastened to the stirrups to achieve snap-fit ​​fixation, and the connecting component 1200 is installed in place.

[0124] Step 3: Insert vertical reinforcing bars 902 into both ends of the second end of the first stirrup, and insert vertical reinforcing bars 902 into both ends of the second end of the second stirrup. The vertical reinforcing bars 902 pass through the first and second stirrups at various heights from top to bottom, further enhancing the connection strength.

[0125] After completing the above steps, the first edge member 106 and the second edge member 206 are fixedly connected by the connecting member 1200 and the vertical insert 902. This connection method requires no welding, is easy to operate, has a fast installation speed, and a large alignment tolerance.

[0126] Figure 30 This is a schematic diagram of the second connection method between the first edge member and the second edge member in this embodiment. The difference between this connection method and the first connection method lies in the number of pre-embedded vertical steel bars, the setting of pre-embedded tie bars, and the position of the connecting members.

[0127] In this connection method, at least three pre-embedded vertical steel bars 901 are pre-embedded along the length direction at both ends of the first prefabricated wall component 100, and the first end of the first stirrup is sleeved on all the pre-embedded vertical steel bars 901. The pre-embedded vertical steel bars 901 include end vertical steel bars 901A located at both ends, and intermediate vertical steel bars 901B located between the end vertical steel bars 901A at both ends.

[0128] Multiple first embedded tie bars 107 are pre-embedded along the height direction in the first precast wall component 100. The first end of the first embedded tie bar 107 is sleeved on the middle vertical steel bar 901B. The second end of the first embedded tie bar 107 extends out of the first precast wall component 100. A vertical dowel bar 902 is inserted into the second end of the first embedded tie bar 107.

[0129] Similarly, at least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200, and the first end of the second stirrup is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends. A plurality of second embedded tie bars 207 are pre-embedded along the height direction in the second precast wall component 200. The first end of the second embedded tie bar 207 is sleeved on the intermediate vertical reinforcing bar 901B, the second end of the second embedded tie bar 207 extends out of the second precast wall component 200, and a vertical dowel bar 902 is inserted into the second end of the second embedded tie bar 207.

[0130] The first embedded tie bar 107 and the second embedded tie bar 207 are arranged opposite to each other. The connecting member 1200 connects the middle of the second end of the first tie bar and the middle of the second end of the second tie bar, and the connecting member 1200 is located on one side of the first embedded tie bar 107 and the second embedded tie bar 207. Specifically, the vertical insertion rod 1201 of the connecting member 1200 is located on one side of the first embedded tie bar 107 and the second embedded tie bar 207 (i.e., the side closer to the precast single-layer wall panel), and the forked fastener 1202 is fastened to the middle position of the first tie bar and the second tie bar respectively.

[0131] The on-site construction process of connection method two is similar to that of connection method one, except that: after the connecting component 1200 is installed in place, its fork-joint buckle 1202 is fastened to the middle of the first stirrup and the second stirrup; at the same time, vertical dowel bars 902 are inserted into the second end of the first embedded tie bar 107 and the second end of the second embedded tie bar 207 respectively, so that a reliable tie system is formed between the embedded tie bar and the connecting component 1200.

[0132] Figure 31This is a structural schematic diagram of the third connection method between the first edge member and the second edge member in this embodiment. The difference between this connection method and the second connection method is that a sub-stirrup is used instead of a pre-embedded tie rod.

[0133] In this connection method, at least three pre-embedded vertical steel bars 901 are pre-embedded along the length direction at both ends of the first prefabricated wall component 100, and the first end of the first stirrup is sleeved on all the pre-embedded vertical steel bars 901. The pre-embedded vertical steel bars 901 include end vertical steel bars 901A located at both ends, and intermediate vertical steel bars 901B located between the end vertical steel bars 901A at both ends.

[0134] Multiple first sub-stirrups 106A are pre-embedded in the first precast wall component 100 along the height direction. The first end of the first sub-stirrup 106A is sleeved on a terminal vertical steel bar 901A and a middle vertical steel bar 901B. The second end of the first sub-stirrup 106A extends out of the first precast wall component 100. A vertical dowel bar 902 is inserted into the second end of the first sub-stirrup 106A.

[0135] Similarly, at least three embedded vertical reinforcing bars 901 are pre-embedded along the length direction at both ends of the second precast wall component 200, and the first end of the second stirrup is sleeved on all the embedded vertical reinforcing bars 901. The embedded vertical reinforcing bars 901 include end vertical reinforcing bars 901A located at both ends, and intermediate vertical reinforcing bars 901B located between the end vertical reinforcing bars 901A at both ends. A plurality of second sub-stirrups 206A are pre-embedded along the height direction in the second precast wall component 200. The first end of the second sub-stirrup 206A is sleeved on one of the end vertical reinforcing bars 901A and one of the intermediate vertical reinforcing bars 901B. The second end of the second sub-stirrup 206A extends out of the second precast wall component 200, and a vertical dowel 902 is inserted into the second end of the second sub-stirrup 206A.

[0136] The first sub-stirrup 106A and the second sub-stirrup 206A are arranged opposite to each other. At least one of the connecting members 1200 simultaneously connects the first stirrup and the second stirrup, and the first sub-stirrup 106A and the second sub-stirrup 206A. Specifically, the vertical insertion rod 1201 of the connecting member 1200 is provided with multiple sets of forked fasteners 1202, some of which fasten to the first stirrup and the second stirrup, and others fasten to the first sub-stirrup 106A and the second sub-stirrup 206A, thus achieving multiple connections.

[0137] The on-site construction process for connection method three is similar to that for connection method two, except that the components extending out of the precast wall component and cooperating with the connecting component 1200 are sub-stirrups (first sub-stirrup 106A, second sub-stirrup 206A), rather than pre-embedded tie bars. Sub-stirrups have better integrity and anchorage performance compared to pre-embedded tie bars.

[0138] In this embodiment, the first prefabricated wall component 100 of the first modular building unit 10 and the second prefabricated wall component 200 of the second modular building unit 20 are arranged opposite each other at intervals.

[0139] At both ends of the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201, the first edge member 106 and the second edge member 206 are fixedly connected by the connection methods one, two, or three described above. Specifically, the vertical insertion rod 1201 of the connecting member 1200 is disposed in the interval between the first edge member 106 and the second edge member 206, the forked fastener 1202 is fastened to the oppositely arranged first and second stirrups, and the vertical insertion rod 902 is inserted into the end of the stirrup, so that the edge members at both ends form a reliable connection.

[0140] In the middle of the first precast single-layer wall panel 101 and the second precast single-layer wall panel 201, the tie rod 800 passes through the through hole 203 and is threadedly connected and tightened to the pre-embedded tie connector 103 (tie bolt) to achieve a fixed connection in the middle.

[0141] After all connections are completed, concrete is poured into the gap between the first precast wall component 100 and the second precast wall component 200 to form a concrete layer. This layer encloses the connecting components at both ends, the tie rods 800 in the middle, and the embedded vertical steel bars 901, forming a whole. This achieves an integrated connection between the first precast wall component 100 and the second precast wall component 200, assembling them into a complete wall.

[0142] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A precast walling element characterised in that, include: Precast single-layer wall panels; Precast ribs are integrally cast with the precast single-layer wall panel, and the precast ribs are located on one side of the outer wall of the precast single-layer wall panel. Through holes are provided on the prefabricated single-layer wall panel and the prefabricated protruding rib; After the two prefabricated wall components are prefabricated separately in the factory, they are assembled into the first modular building and the second modular building, respectively. The first modular building and the second modular building are assembled on site. The prefabricated wall components of the first modular building and the prefabricated wall components of the second modular building are arranged at intervals and opposite to each other. They are fixedly connected by temporary tie rods passing through the through holes to form a complete wall.

2. A precast wall element according to claim 1, characterised in that Multiple rows of tie rope loops are pre-embedded along the length of the prefabricated single-layer wall panel. The multiple tie rope loops in each row are arranged along the height of the prefabricated single-layer wall panel. The multiple tie rope loops in each row on the prefabricated wall components of the first modular building and the prefabricated wall components of the second modular building are connected one-to-one.

3. A modular fabricated building, characterized by include: A first modular building includes at least one prefabricated wall component as described in claim 1 or 2, wherein the prefabricated wall component of the first modular building is a first prefabricated wall component. The second modular building includes at least one prefabricated wall component as described in claim 1 or 2, wherein the prefabricated wall component of the second modular building is a second prefabricated wall component; The first modular building and the second modular building are prefabricated separately in the factory and then assembled on site. The first prefabricated wall component of the first modular building and the second prefabricated wall component of the second modular building are spaced apart and opposite to each other. They are fixedly connected by temporary tie rods passing through the through holes. They are integrated by pouring concrete into the gap between the first prefabricated wall component of the first modular building and the second prefabricated wall component of the second modular building to form a concrete layer, thus assembling a complete wall.

4. A modular prefabricated building according to claim 3, characterized in that, The first prefabricated rib divides one side of the outer wall of the first prefabricated wall panel into multiple first non-rib regions, and the second prefabricated rib divides one side of the outer wall of the second prefabricated wall panel into multiple second non-rib regions. The first prefabricated rib and the second prefabricated rib are arranged opposite each other at a distance, and the first non-rib region and the second non-rib region are arranged opposite each other at a distance; A vertical reinforcing bar is inserted between the first prefabricated rib and the second prefabricated rib, and the vertical reinforcing bar is located on one side of the tie rod; And / or, a vertical reinforcing bar is inserted between the first non-convex rib region and the second non-convex rib.

5. A modular prefabricated building according to claim 3, characterized in that, The first precast wall panel has a first edge member at each end, and the second precast wall panel has a second edge member at each end. The two ends of the first precast wall panel and the two ends of the second precast wall panel are fixedly connected by the first edge member and the second edge member, respectively.

6. A modular prefabricated building according to claim 5, characterized in that, The first edge member includes a plurality of first stirrups embedded along the height direction of the first precast wall member, and the second edge member includes a plurality of second stirrups embedded along the height direction of the second precast wall member; During on-site assembly of the first modular building and the second modular building, multiple first stirrups and multiple second stirrups are fixedly connected one-to-one through connecting components.

7. A modular prefabricated building according to claim 6, characterized in that, The connecting assembly includes connecting stirrups and vertical inserts. The first stirrup and the second stirrup are arranged opposite to each other. The connecting stirrup is arranged between the first stirrup and the second stirrup and intersects with both the first stirrup and the second stirrup. The vertical inserts are respectively inserted into the intersection area between the connecting stirrup and the first stirrup, and into the intersection area between the connecting stirrup and the second stirrup. Optionally, the connecting assembly includes a connecting tie rod, and the middle part of the connecting stirrup is connected through the connecting tie rod.

8. A modular prefabricated building according to claim 6, characterized in that, The connecting assembly includes a connecting member, which includes a vertical insertion rod and a plurality of forked fasteners fixed to one side of the vertical insertion rod and arranged along its length. The vertical insertion rod is inserted into a plurality of first stirrups / second stirrups. Rotating the vertical insertion rod causes the plurality of forked fasteners to rotate to one side of the plurality of second stirrups / first stirrups, and the plurality of forked fasteners are correspondingly located above the plurality of second stirrups / first stirrups. The vertical insertion rod is further inserted downwards, causing the plurality of forked fasteners to be correspondingly engaged with the second stirrups / first stirrups.

9. A modular prefabricated building according to claim 6, characterized in that, The connecting assembly includes a connecting member, which includes a vertical insertion rod and a plurality of forked fasteners fixed to opposite sides of the vertical insertion rod along its length. The vertical insertion rod is inserted into the gap between the first precast wall component and the second precast wall component. The plurality of forked fasteners on both sides of the vertical insertion rod are respectively inserted into the first edge component and the second edge component. By pouring concrete into the gap between the first precast wall component and the second precast wall component to form a concrete layer, the first precast wall component and the second precast wall component are integrally connected to form a complete wall.

10. A modular prefabricated building according to claim 8 or 9, characterized in that, The middle part of the second end of the first stirrup is connected to the middle part of the second end of the second stirrup by at least one of the connecting members; Optionally, at least three first vertical steel bars are pre-embedded at both ends of the first precast wall component along the length direction, and the first end of the first stirrup is sleeved on all the first vertical steel bars. The first vertical reinforcement includes first end vertical reinforcements located at both ends, and a first intermediate vertical reinforcement located between the first end vertical reinforcements at both ends; Multiple first embedded tie bars are pre-embedded in the first precast wall component along the height direction. The first end of the first embedded tie bar is sleeved on the first intermediate vertical steel bar, and the second end of the first embedded tie bar extends out of the first precast wall component. A vertical dowel bar is inserted into the second end of the first embedded tie bar. At least three second vertical steel bars are pre-embedded at both ends of the second precast wall component along the length direction, and the first end of the second stirrup is sleeved on all the second vertical steel bars; The second vertical reinforcement includes second end vertical reinforcements located at both ends, and a second intermediate vertical reinforcement located between the second end vertical reinforcements at both ends; Multiple second embedded tie bars are pre-embedded along the height direction in the second precast wall component. The first end of the second embedded tie bar is sleeved on the second intermediate vertical steel bar, the second end of the second embedded tie bar extends out of the second precast wall component, and the second end of the second embedded tie bar is inserted into the vertical steel bar. The first embedded tie bar and the second embedded tie bar are arranged opposite to each other, and the connecting member connecting the middle of the second end of the first stirrup and the middle of the second end of the second stirrup is located on one side of the first embedded tie bar and the second embedded tie bar; Optionally, at least three first vertical steel bars are pre-embedded in the length direction at both ends of the first precast wall component, and the first end of the first stirrup is sleeved on all the first vertical steel bars. The first vertical reinforcement includes first end vertical reinforcements located at both ends, and a first intermediate vertical reinforcement located between the first end vertical reinforcements at both ends; Multiple first sub-stirrups are pre-embedded in the first precast wall component along the height direction. The first end of the first sub-stirrup is sleeved on a first end vertical steel bar and a first middle vertical steel bar. The second end of the first sub-stirrup extends out of the first precast wall component. A vertical dowel bar is inserted into the second end of the first sub-stirrup. At least three second vertical steel bars are pre-embedded in the length direction at both ends of the second precast wall component, and the first end of the second stirrup is sleeved on all the second vertical steel bars; The second vertical reinforcement includes second end vertical reinforcements located at both ends, and a second intermediate vertical reinforcement located between the second end vertical reinforcements at both ends; Multiple second sub-stirrups are pre-embedded in the second precast wall component along the height direction. The first end of the second sub-stirrup is sleeved on a second end vertical steel bar and a second middle vertical steel bar. The second end of the second sub-stirrup extends out of the second precast wall component. Vertical dowel bars are inserted into the second end of the second sub-stirrup. The first sub-stirrup and the second sub-stirrup are arranged opposite to each other, and at least one of the connecting members simultaneously connects the first stirrup and the second stirrup, and the first sub-stirrup and the second stirrup.

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