Assembled concrete composite wall and construction method thereof

Abstract

The present invention relates to an assembled concrete composite wall and a construction method thereof, wherein the assembled concrete composite wall comprises a wall body, wherein the wall body comprises a prefabricated wall panel group and a prefabricated floor slab, wherein the prefabricated wall panel group comprises a first prefabricated wall panel and a second prefabricated wall panel arranged opposite to each other, wherein the top of the first prefabricated wall panel and the top of the second prefabricated wall panel are both overlapped with a prefabricated floor slab, wherein the opposite ends of the two prefabricated floor slabs are connected by a horizontal short steel bar, a steel cage is provided on the top of the prefabricated wall panel group, and two horizontally adjacent first prefabricated wall panels and two horizontally adjacent second prefabricated wall panels are both connected by a transverse connector, a prefabricated steel mesh is placed on the top of the prefabricated floor slab, and a post-cast concrete layer is poured between the first prefabricated wall panel and the second prefabricated wall panel and the top surface of the prefabricated floor slab. The beneficial effects of the present invention are: improving transportation and installation efficiency, reducing the processing difficulty of prefabricated components, and reducing the amount of steel bars used at the connection positions in the wall body, which can further reduce material waste and reduce construction costs.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an assembled concrete composite wall and a construction method thereof. Background Art

[0002] Prefabricated buildings are constructed by prefabricating structural components such as beams, slabs, and columns in traditional cast-in-place building structures in factories, and then transporting them to the construction site for assembly into the entire building. Through factory prefabrication and on-site splicing, the quality of component manufacturing is ensured while greatly improving construction efficiency and reducing environmental pollution and material waste.

[0003] In actual projects, existing prefabricated composite wall panels require complex steel bar connections between the two prefabricated panels of the same wall panel. At the same time, when connecting the upper and lower layers and horizontally adjacent wall panels, complex structural steel bars and embedded steel bars (such as beard bars and tie bars) need to be installed. This makes factory processing more difficult, makes operation inconvenient during construction and assembly, and thus reduces construction efficiency, making it impossible to fully utilize the advantages of prefabricated buildings, resulting in a large amount of waste of raw materials and increased construction costs. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a prefabricated concrete composite wall and its construction method, so as to improve the transportation and installation efficiency, reduce the processing difficulty of prefabricated components, and at the same time reduce the amount of steel bars used in the connection positions of the wall, which can further reduce material waste and reduce construction costs.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] An assembled concrete composite wall includes a wall body, which includes a prefabricated wall panel group and a prefabricated floor slab. The prefabricated wall panel group includes multiple groups, and the multiple groups of prefabricated wall panel groups are sequentially spliced ​​horizontally. The prefabricated wall panel group includes a first prefabricated wall panel and a second prefabricated wall panel that are arranged opposite to each other. The top of the first prefabricated wall panel and the top of the second prefabricated wall panel are both overlapped with a prefabricated floor slab. The middle parts of the first prefabricated wall panel and the second prefabricated wall panel are connected by tension bolts. The four corners of the first prefabricated wall panel and the second prefabricated wall panel are connected by prefabricated steel components. The opposite ends of the two prefabricated floor slabs are connected by water. Flat short steel bars are connected, and a steel cage is provided on the top of the prefabricated wall panel group. The two sides of the bottom of the steel cage are respectively connected to the top of the first prefabricated wall panel and the top of the second prefabricated wall panel. The two horizontally adjacent first prefabricated wall panels and the two horizontally adjacent second prefabricated wall panels are connected by transverse connectors. A prefabricated steel mesh is placed on the top of the prefabricated floor slab. A post-cast concrete layer is poured between the first prefabricated wall panel and the second prefabricated wall panel and the top surface of the prefabricated floor slab. The post-cast concrete layer on the top surface of the prefabricated floor slab covers the bottom of the steel cage, horizontal short steel bars and prefabricated steel mesh.

[0007] Furthermore, the prefabricated steel component includes a first embedded plate, a second embedded plate, a first connecting plate, a second connecting plate, and fastening bolts. The first embedded plate is arranged in the first prefabricated wall panel, and the second embedded plate is arranged in the second prefabricated wall panel. One side plate surface of the first embedded plate is vertically connected to the first connecting plate, and one side plate surface of the second embedded plate is vertically connected to two second connecting plates parallel to each other. The first connecting plate is inserted between the two second connecting plates, and the first connecting plate is connected to the two second connecting plates at the same time by fastening bolts.

[0008] Furthermore, floor slopes are provided at both ends of the prefabricated floor slabs. The top surface of the prefabricated floor slabs is located at the floor slope and a plurality of strip grooves are provided at equal intervals along the length direction of the floor slope. The strip grooves at the opposite ends of the two prefabricated floor slabs correspond to each other one by one. A horizontal short steel bar is provided between the corresponding two strip grooves, and the two ends of the horizontal short steel bar are respectively inserted into the corresponding two strip grooves.

[0009] Furthermore, wall panel slopes are provided around the first prefabricated wall panel and the second prefabricated wall panel, and the wall panel slopes are provided on the opposite side of the first prefabricated wall panel and the second prefabricated wall panel. A plurality of vertical slot groups are provided at even intervals at the top and bottom of the prefabricated wall panel group along the width direction of the first prefabricated wall panel, and a plurality of horizontal slot groups are provided at even intervals between two adjacent first prefabricated wall panels along the height direction of the first prefabricated wall panel and between two adjacent second prefabricated wall panels along the height direction of the second prefabricated wall panel. The vertical slot groups are used to place steel cages, and the horizontal slot groups are used to place horizontal connecting pieces.

[0010] Furthermore, the vertical slot group includes two opposite vertical slots, and the two vertical slots in the vertical slot group are respectively arranged at the wall panel slopes of the first prefabricated wall panel and the second prefabricated wall panel. The steel cage includes inverted U-shaped steel bars and straight steel bars. There are multiple inverted U-shaped steel bars and the multiple inverted U-shaped steel bars correspond one to one to the multiple groups of vertical slot groups. The middle parts of the top ends and the middle parts of the side ends of the multiple inverted U-shaped steel bars are connected by straight steel bars. The straight steel bars are located on the inner side of the inverted U-shaped steel bars. The bottom ends of the inverted U-shaped steel bars are respectively inserted into the two vertical slots in the corresponding vertical slot group, and the prefabricated steel mesh and the steel cage are staggered.

[0011] Furthermore, the transverse slot group includes two opposite transverse slots, the two transverse slots in the transverse slot group between two adjacent first prefabricated wall panels are respectively arranged at the wall panel slopes of the two adjacent first prefabricated wall panels, and the two transverse slots in the transverse slot group between two adjacent second prefabricated wall panels are respectively arranged at the wall panel slopes of the two adjacent second prefabricated wall panels. The transverse connecting parts include transverse connecting steel bars and vertical long steel bars. There are multiple transverse connecting steel bars and the multiple transverse connecting steel bars correspond one-to-one to the multiple groups of transverse slot groups. The middle parts of the multiple transverse connecting steel bars are connected by vertical long steel bars, and the two ends of the transverse steel bars are respectively inserted into the two transverse slots in the corresponding transverse slot group.

[0012] Furthermore, the present invention also provides a construction method of an assembled concrete composite wall, comprising the following steps:

[0013] S1. Connecting a first prefabricated wall panel to a second prefabricated wall panel using tension bolts and prefabricated steel components to form a prefabricated wall panel group, hoisting and aligning multiple prefabricated wall panel groups in sequence, placing transverse connectors between two adjacent prefabricated wall panel groups, and splicing the multiple prefabricated wall panel groups in sequence;

[0014] S2. Overlap the prefabricated floor slabs on top of the first prefabricated wall panel and the second prefabricated wall panel, and place short horizontal steel bars between the two prefabricated floor slabs to connect the opposite ends of the two prefabricated floor slabs;

[0015] S3, placing a steel cage on top of the prefabricated wall panel group to connect the top of the first prefabricated wall panel with the top of the second prefabricated wall panel, and then placing a prefabricated steel mesh on top of the prefabricated floor slab;

[0016] S4, pouring a post-cast concrete layer between the first prefabricated wall panel and the second prefabricated wall panel and on the top surface of the prefabricated floor slab to complete the construction of the lower wall;

[0017] S5. After the construction of the lower wall is completed, the upper wall is constructed on top of the lower wall according to steps S1-S4, so that the ends of the inverted U-shaped steel bars at the top of the precast wall panels in the lower wall, which are exposed from the post-cast concrete layer, are inserted into the vertical notches at the bottom of the precast wall panels in the upper wall;

[0018] S6. Repeat steps S1-S5 to complete the construction of multi-layer walls from bottom to top.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention disassembles the wall into two independent wall panels, a first prefabricated wall panel and a second prefabricated wall panel, and connects the first prefabricated wall panel and the second prefabricated wall panel through tension bolts and prefabricated steel components, thereby reducing the overall weight of the wall, making it easier to transport and hoist, improving transportation and construction efficiency, and reducing construction costs.

[0021] 2. The wall in the present invention can be directly used as a casting template for the post-cast concrete layer, which can reduce the workload of template construction.

[0022] 3. In the present invention, the interface between the wall and the post-cast concrete layer has the effect of the full-length shallow notch, which enhances the working performance between the prefabricated wall panel and the post-cast concrete layer.

[0023] 4. The present invention provides vertical notches and steel cages, so that the upper and lower walls can be quickly aligned and connected through the steel cages, which reduces the difficulty of wall construction and improves installation efficiency.

[0024] 5. The present invention realizes the connection between the first prefabricated wall panel and the second prefabricated wall panel through a prefabricated steel cage, which can be hoisted and completed in one go during the construction process, greatly reducing the workload of on-site steel bar placement and positioning.

[0025] 6. The present invention can improve the construction needs and technical level of building industrialization, not only ensuring the mechanical properties, but also effectively reducing the project cost and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall structure of the assembled concrete composite wall in the present invention;

[0027] Figure 2 Schematic diagram of the structure of the first prefabricated wall panel in the present invention;

[0028] Figure 3 Schematic diagram of the structure of the second prefabricated wall panel in the present invention;

[0029] Figure 4 It is a structural schematic diagram of the prefabricated steel component in the present invention;

[0030] Figure 5 Schematic diagram of the dimensions of the prefabricated steel member in the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the prefabricated floor slab in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the steel cage in the present invention;

[0033] Figure 8 Schematic diagram of the structure of the transverse connecting member in the present invention;

[0034] Figure 9 Schematic diagram of the construction of the assembled concrete composite wall in the present invention;

[0035] Figure 10 It is a structural schematic diagram of the prefabricated steel mesh in the present invention.

[0036] In the figure: 1. First prefabricated wall panel; 2. Second prefabricated wall panel; 3. Prefabricated floor slab; 4. Post-cast concrete layer; 5. Prefabricated steel member; 51. First embedded plate; 52. Second embedded plate; 53. First connecting plate; 54. Second connecting plate; 55. Fastening bolts; 6. Horizontal short steel bars; 7. Steel cage; 71. Inverted U-shaped steel bars; 72. Straight steel bars; 8. Horizontal connector; 81. Horizontal connecting steel bars; 82. Vertical long steel bars; 9. Tension bolts; 10. Floor slab slope; 11. Strip groove; 12. Wall panel slope; 13. Vertical notch; 14. Horizontal notch; 15. Prefabricated steel mesh. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0038] like Figures 1-9 As shown, an assembled concrete composite wall includes a wall body, which includes a prefabricated wall panel group and a prefabricated floor slab 3. The prefabricated wall panel group is provided with multiple groups and the multiple prefabricated wall panel groups are spliced ​​horizontally in sequence. The prefabricated wall panel group includes a first prefabricated wall panel 1 and a second prefabricated wall panel 2 arranged opposite to each other. The top of the first prefabricated wall panel 1 and the top of the second prefabricated wall panel 2 are both overlapped with prefabricated floor slab 3. The middle parts of the first prefabricated wall panel 1 and the second prefabricated wall panel 2 are connected by tension bolts 9. The four corners of the first prefabricated wall panel 1 and the second prefabricated wall panel 2 are connected by prefabricated steel components 5. The opposite ends of the two prefabricated floor slabs 3 are connected by horizontal short steel bars 6. A prefabricated steel mesh 15 is placed on the top of the prefabricated floor slab 3. A steel cage 7 is provided on the top of the prefabricated wall panel group. The two sides of the bottom of the steel cage 7 are respectively connected to the top of the first prefabricated wall panel 1 and the top of the second prefabricated wall panel 2. The two horizontally adjacent first prefabricated wall panels 1 and the two horizontally adjacent second prefabricated wall panels 2 are connected by horizontal connectors 8.

[0039] When constructing the wall, first connect the first prefabricated wall panel 1 and the second prefabricated wall panel 2 to form a prefabricated wall panel group through tension bolts 9 and prefabricated steel components 5, and then hoist it to the installation position. Then align multiple groups of prefabricated wall panel groups in sequence, connect two horizontally adjacent first prefabricated wall panels 1 and two horizontally adjacent second prefabricated wall panels 2 through transverse connectors 8, so that multiple groups of prefabricated wall panel groups are spliced ​​together, and then overlap the prefabricated floor slab 3 on the top of the first prefabricated wall panel 1 and the second prefabricated wall panel 2, and connect the two opposite prefabricated floor slabs 3 through horizontal short steel bars 6. At the same time, connect the top ends of the first prefabricated wall panel 1 and the second prefabricated wall panel 2 in the prefabricated wall panel group through the steel cage 7, and then place the prefabricated floor slab 3 on top of the prefabricated floor slab 3. Figure 10 The prefabricated steel mesh 15 is shown, and the prefabricated steel mesh 15 is staggered with the steel cage 7. Finally, a post-cast concrete layer 4 is poured between the first prefabricated wall panel 1 and the second prefabricated wall panel 2 and on the top surface of the prefabricated floor 3, so that the post-cast concrete layer 4 on the top surface of the prefabricated floor 3 covers the bottom of the steel cage 7, the horizontal short steel bars 6 and the prefabricated steel mesh 15.

[0040] like Figure 4 As shown, the prefabricated steel member 5 includes a first embedded plate 51, a second embedded plate 52, a first connecting plate 53, a second connecting plate 54, and fastening bolts 55. One side of the first embedded plate 51 is perpendicularly connected to the first connecting plate 53, and one side of the second embedded plate 52 is perpendicularly connected to two parallel second connecting plates 54. The first connecting plate 53 is preferably integrally formed with the first embedded plate 51, and the second connecting plate 54 is preferably integrally formed with the second embedded plate 52. Through holes for installing fastening bolts 55 are reserved on the first connecting plate 53 and the second connecting plate 54.

[0041] The first prefabricated wall panel 1 and the second prefabricated wall panel 2 are prefabricated from concrete in the factory, and the interior is reinforced with pre-embedded steel bars for concrete structure. During production, through holes for installing tension bolts 9 are reserved in the middle of the first prefabricated wall panel 1 and the second prefabricated wall panel 2. The first embedded plate 51 is embedded in the first prefabricated wall panel 1, and the second embedded plate 52 is embedded in the second prefabricated wall panel 2. When assembling the prefabricated wall panel set, the first prefabricated wall panel 1 and the second prefabricated wall panel 2 are hoisted and aligned so that the first connecting plate 53 is inserted between the two second connecting plates 54. The first connecting plate 53 and the two second connecting plates 54 are then fixedly connected simultaneously by tightening bolts 55. Finally, the tension bolts 9 are installed to complete the connection and fixation of the first prefabricated wall panel 1 and the second prefabricated wall panel 2. By disassembling the wall into two independent wall panels, a first prefabricated wall panel 1 and a second prefabricated wall panel 2, and connecting the first prefabricated wall panel 1 and the second prefabricated wall panel 2 through tension bolts 9 and prefabricated steel components 5, the overall weight of the wall is reduced, making it easier to transport and hoist, thereby improving transportation and construction efficiency and reducing construction costs.

[0042] like Figure 5 As shown, in this embodiment, the thickness of the first embedded plate 51, the second embedded plate 52, and the first connecting plate 53 are all t lj , and t lj is 6mm-8mm, and the thickness of the second connecting plate 54 is t lj / 2; the width of the first embedded plate 51, the second embedded plate 52, the first connecting plate 53, and the second connecting plate 54 are all b lj , and b lj 40mm-60mm; diameter d of the through hole for installing the fastening bolt 55 lj The first connecting plate 53 should be strong enough. The overall length of the first embedded plate 51 and the first connecting plate 53, and the overall length of the second embedded plate 52 and the second connecting plate 54 should be h lj , and h lj Wall thickness limitations should be considered.

[0043] like Figure 6 As shown, floor slopes 10 are provided at both ends of the precast floor slabs 3. The top surface of the precast floor slabs 3 is located at the floor slopes 10 and is provided with multiple strip grooves 11 at equal intervals along the length of the floor slopes 10. The strip grooves 11 at the opposite ends of the two precast floor slabs 3 correspond one to one. After the precast floor slabs 3 are overlapped on top of the first precast wall panel 1 and the second precast wall panel 2, short horizontal steel bars 6 are placed between the two corresponding strip grooves, with the ends of the short horizontal steel bars 6 respectively inserted into the two corresponding strip grooves 11, thereby connecting the opposite ends of the two precast floor slabs 3 via the short horizontal steel bars 6.

[0044] Wall panel slopes 12 are provided around the first prefabricated wall panel 1 and the second prefabricated wall panel 2. The wall panel slopes 12 are provided on the opposite side of the first prefabricated wall panel 1 and the second prefabricated wall panel 2. A plurality of vertical slot groups are provided at even intervals at the top and bottom of the prefabricated wall panel group along the width direction of the first prefabricated wall panel 1. A plurality of horizontal slot groups are provided at even intervals between two adjacent first prefabricated wall panels 1 along the height direction of the first prefabricated wall panel 1 and between two adjacent second prefabricated wall panels 2 along the height direction of the second prefabricated wall panel 2. The vertical slot groups are used to place the steel cage 7, and the horizontal slot groups are used to place the horizontal connector 8.

[0045] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 As shown, the vertical notch group includes two opposing vertical notches 13. The two vertical notches 13 in the vertical notch group are respectively located at the wall panel slope 12 of the first prefabricated wall panel 1 and the second prefabricated wall panel 2. The steel cage 7 includes inverted U-shaped steel bars 71 and straight steel bars 72. There are multiple inverted U-shaped steel bars 71, and the multiple inverted U-shaped steel bars 71 correspond one-to-one to the multiple groups of vertical notches. The top middle portions and side middle portions of the multiple inverted U-shaped steel bars 71 are welded together by straight steel bars 72, and the straight steel bars 72 are located inside the inverted U-shaped steel bars 71. When placing the steel cage 7, the bottom ends of the inverted U-shaped steel bars 71 are respectively inserted into the two vertical notches 13 in the corresponding vertical notch group, thereby connecting the bottom sides of the steel cage 7 to the top of the first prefabricated wall panel 1 and the top of the second prefabricated wall panel 2, respectively. The connection between the first prefabricated wall panel 1 and the second prefabricated wall panel 2 is achieved through the prefabricated steel cage 7, which can be hoisted and completed in one go during the construction process, greatly reducing the workload of on-site steel bar placement and positioning.

[0046] In this embodiment, the cross-sectional area of ​​the inverted U-shaped steel bar 71 should not be less than the cross-sectional area of ​​the steel bar in the prefabricated wall panel + F v / f vs , where F v is the design value of the shear bearing capacity of the concrete layer corresponding to the thinner wall at the bottom of the wall panel slope 12, f vs is the design value of shear strength of inverted U-shaped steel bar 71.

[0047] like Figure 2 、 Figure 3 、 Figure 8As shown, the transverse notch group includes two opposing transverse notches 14. The two transverse notches 14 in the transverse notch group between two adjacent first prefabricated wall panels 1 are respectively located at the wall panel slope 12 of the two adjacent first prefabricated wall panels 1, and the two transverse notches 14 in the transverse notch group between two adjacent second prefabricated wall panels 2 are respectively located at the wall panel slope 12 of the two adjacent second prefabricated wall panels 2. The transverse connector 8 includes transverse connecting steel bars 81 and vertical long steel bars 82. There are multiple transverse connecting steel bars 81, and the multiple transverse connecting steel bars 81 correspond one-to-one to the multiple transverse notch groups. The middle parts of the multiple transverse connecting steel bars 81 are welded together by the vertical long steel bars 82. When splicing multiple prefabricated wall panels, the ends of the transverse steel bars are then inserted into the two transverse notches 14 in the corresponding transverse notch group, thereby connecting the multiple prefabricated wall panels together.

[0048] In this embodiment, the cross-sectional dimensions of the transverse notch 14 and the vertical notch 13 should meet the requirements of the prefabricated wall panels for the thickness of the steel bar protective layer, and the length should be no less than the radius of the steel bar in the notch + the anchorage length la of the tensile steel bar, where the anchorage length la of the tensile steel bar is determined according to the provisions on the anchorage length of the tensile steel bar in the current "Concrete Structure Design Code"; the slope of the floor slab slope 10 and the wall panel slope 12 is 45°, and the length of the floor slab slope 10 and the wall panel slope 12 is 30mm-35mm.

[0049] like Figure 1 、 Figure 8 、 Figure 9 As shown, based on the above description, when constructing a prefabricated concrete composite wall, the wall is constructed and assembled layer by layer from top to bottom, specifically including the following construction steps:

[0050] S1. Connect the first prefabricated wall panel 1 and the second prefabricated wall panel 2 to form a prefabricated wall panel group through tension bolts 9 and prefabricated steel components 5, hoist and align multiple groups of prefabricated wall panels in sequence, place horizontal connectors 8 between two adjacent groups of prefabricated wall panels, and splice multiple groups of prefabricated wall panels in sequence.

[0051] S2. Overlap the prefabricated floor slabs 3 on the top of the first prefabricated wall panel 1 and the top of the second prefabricated wall panel 2, and place short horizontal steel bars 6 between the two prefabricated floor slabs 3 to connect the opposite ends of the two prefabricated floor slabs 3.

[0052] S3. Place the steel cage 7 on top of the prefabricated wall panel group so that the top of the first prefabricated wall panel 1 is connected to the top of the second prefabricated wall panel 2, and then place the prefabricated steel mesh 15 on top of the prefabricated floor slab 3. The steel cage 7 is prefabricated according to the layout of the vertical notches 13 before placement. In this way, when the steel cage 7 is hoisted, the bottom ends of the inverted U-shaped steel bars 71 in the steel cage 7 can be inserted into the vertical notches 13 at the same time, thereby allowing the steel cage 7 to be hoisted in one go. At the same time, the prefabricated steel mesh 15 is staggered with the steel cage 7, which can greatly reduce the workload of on-site steel bar placement and positioning. At the same time, steel bar processing can be completed in the factory, which can reduce the workload of on-site steel bar processing, improve work efficiency, and reduce the area occupied by the construction site.

[0053] S4. A post-cast concrete layer 4 is poured between the first and second precast wall panels 1, 2, and on top of the precast floor slab 3, completing the construction of the lower wall. The wall directly serves as the formwork for the post-cast concrete layer 4, reducing the amount of formwork construction work. Furthermore, the full-length shallow notches at the interface between the wall and the post-cast concrete layer 4 enhance the interoperability between the first and second precast wall panels 1, 2, and the post-cast concrete layer 4.

[0054] S5. After the lower wall is constructed, the upper wall is constructed on top of the lower wall according to steps S1-S4. The ends of the inverted U-shaped steel bars 71, which are exposed at the top of the precast wall panels in the lower wall and are placed in the vertical notches 13 at the bottom of the precast wall panels in the upper wall, are inserted into the vertical notches 13. The arrangement of the vertical notches 13 and the steel cage 7 allows the upper and lower walls to be quickly aligned and connected via the steel cage 7, reducing the difficulty of wall construction and improving installation efficiency.

[0055] S6. Repeat steps S1-S5 to complete the construction and assembly of the multi-layer wall from bottom to top.

[0056] Based on the structural composition and construction method of the above-mentioned prefabricated concrete composite wall, the transportation and installation efficiency can be improved, the processing difficulty of prefabricated components can be reduced, and the amount of steel bars used in the connection positions of the wall can be reduced, further reducing material waste and construction costs, thereby improving the construction needs and technical level of building industrialization, effectively reducing project costs and shortening construction periods while ensuring reliable mechanical properties.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An assembled concrete composite wall, comprising a wall body, characterized in that: The wall comprises a prefabricated wall panel group and a prefabricated floor slab (3). The prefabricated wall panel group is provided with multiple groups and the multiple groups of prefabricated wall panel groups are sequentially horizontally spliced. The prefabricated wall panel group comprises a first prefabricated wall panel (1) and a second prefabricated wall panel (2) which are arranged opposite to each other. The top of the first prefabricated wall panel (1) and the top of the second prefabricated wall panel (2) are both overlapped with a prefabricated floor slab (3). The middle of the first prefabricated wall panel (1) and the second prefabricated wall panel (2) are connected by tension bolts (9). The four corners of the first prefabricated wall panel (1) and the second prefabricated wall panel (2) are connected by prefabricated steel components (5). The opposite ends of the two prefabricated floor slabs (3) are connected by horizontal short steel bars (6). The top of the prefabricated wall panel group is connected to the first prefabricated wall panel (1). A steel cage (7) is provided, and both sides of the bottom of the steel cage (7) are connected to the top of the first prefabricated wall panel (1) and the top of the second prefabricated wall panel (2) respectively. Two adjacent first prefabricated wall panels (1) and two adjacent second prefabricated wall panels (2) are connected by transverse connectors (8). A prefabricated steel mesh (15) is placed on the top of the prefabricated floor slab (3). A post-cast concrete layer (4) is poured between the first prefabricated wall panel (1) and the second prefabricated wall panel (2) and on the top surface of the prefabricated floor slab (3). The post-cast concrete layer (4) on the top surface of the prefabricated floor slab (3) covers the bottom of the steel cage (7), the horizontal short steel bars (6) and the prefabricated steel mesh (15). The prefabricated steel member (5) comprises a first embedded plate (51), a second embedded plate (52), a first connecting plate (53), a second connecting plate (54), and fastening bolts (55). The first embedded plate (51) is arranged in the first prefabricated wall panel (1), and the second embedded plate (52) is arranged in the second prefabricated wall panel (2). One side plate surface of the first embedded plate (51) is vertically connected to the first connecting plate (53), and one side plate surface of the second embedded plate (52) is vertically connected to two second connecting plates (54) parallel to each other. The first connecting plate (53) is inserted between the two second connecting plates (54), and the first connecting plate (53) is simultaneously connected to the two second connecting plates (54) through the fastening bolts (55).

2. The assembled concrete composite wall according to claim 1, characterized in that: Both ends of the prefabricated floor slab (3) are provided with floor slab slopes (10), and the top surface of the prefabricated floor slab (3) is located at the floor slab slope (10) and is provided with a plurality of strip grooves (11) at equal intervals along the length direction of the floor slab slope (10). The strip grooves (11) at opposite ends of the two prefabricated floor slabs (3) correspond to each other one by one, and a horizontal short steel bar (6) is provided between the corresponding two strip grooves, and both ends of the horizontal short steel bar (6) are respectively inserted into the corresponding two strip grooves (11).

3. The assembled concrete composite wall according to claim 1, characterized in that: Wall panel slopes (12) are provided around the first prefabricated wall panel (1) and around the second prefabricated wall panel (2). The wall panel slopes (12) are provided on the opposite side of the first prefabricated wall panel (1) and the second prefabricated wall panel (2). A plurality of vertical slot groups are provided at equal intervals at the top and bottom of the prefabricated wall panel group along the width direction of the first prefabricated wall panel (1). A plurality of horizontal slot groups are provided at equal intervals between two adjacent first prefabricated wall panels (1) and between two adjacent second prefabricated wall panels (2) along the height direction of the second prefabricated wall panel (2). The vertical slot groups are used to place the steel cage (7), and the horizontal slot groups are used to place the horizontal connector (8).

4. The assembled concrete composite wall according to claim 3, characterized in that: The vertical notch group includes two opposite vertical notches (13), and the two vertical notches (13) in the vertical notch group are respectively arranged at the wall panel slopes (12) of the first prefabricated wall panel (1) and the second prefabricated wall panel (2). The steel cage (7) includes an inverted U-shaped steel bar (71) and a straight steel bar (72). The inverted U-shaped steel bar (71) is provided with a plurality of inverted U-shaped steel bars (71) and the plurality of inverted U-shaped steel bars (71) correspond one to one with the plurality of vertical notch groups. The middle portions of the top ends and the middle portions of the side ends of the plurality of inverted U-shaped steel bars (71) are connected by the straight steel bars (72). The straight steel bars (72) are located inside the inverted U-shaped steel bars (71). The bottom ends of the inverted U-shaped steel bars (71) are respectively inserted into the two vertical notches (13) in the corresponding vertical notch group. The prefabricated steel mesh (15) and the steel cage (7) are staggered.

5. The assembled concrete composite wall according to claim 3, characterized in that: The transverse notch group includes two opposite transverse notches (14), the two transverse notches (14) in the transverse notch group between two adjacent first prefabricated wall panels (1) are respectively arranged at the wall panel slopes (12) of the two adjacent first prefabricated wall panels (1), and the two transverse notches (14) in the transverse notch group between two adjacent second prefabricated wall panels (2) are respectively arranged at the wall panel slopes (12) of the two adjacent second prefabricated wall panels (2). The transverse connecting member (8) includes a transverse connecting steel bar (81) and a vertical long steel bar (82). The transverse connecting steel bar (81) is provided with a plurality of transverse connecting steel bars (81) and the plurality of transverse connecting steel bars (81) correspond one to one with the plurality of transverse notch groups. The middle portions of the plurality of transverse connecting steel bars (81) are connected by the vertical long steel bar (82), and the two ends of the transverse steel bar are respectively inserted into the two transverse notches (14) in the corresponding transverse notch group.

6. A construction method for an assembled concrete composite wall according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Hoist and align the first prefabricated wall panel (1) and the second prefabricated wall panel (2), insert the first connecting plate (53) between the two second connecting plates (54), then simultaneously fix the first connecting plate (53) and the two second connecting plates (54) by tightening the bolts (55), then install the tension bolts (9), and then connect the first prefabricated wall panel (1) and the second prefabricated wall panel (2) by the tension bolts (9) and the prefabricated steel member (5) to form a prefabricated wall panel group, hoist and align multiple prefabricated wall panel groups in sequence, place a transverse connecting member (8) between two adjacent prefabricated wall panel groups, and splice the multiple prefabricated wall panel groups in sequence; S2, overlapping the prefabricated floor slab (3) on the top of the first prefabricated wall panel (1) and the top of the second prefabricated wall panel (2), placing a short horizontal steel bar (6) between the two prefabricated floor slabs (3) to connect the two opposite ends of the two prefabricated floor slabs (3); S3, placing a steel cage (7) on the top of the prefabricated wall panel group, connecting the top of the first prefabricated wall panel (1) with the top of the second prefabricated wall panel (2), and then placing a prefabricated steel mesh (15) on the top of the prefabricated floor slab (3); S4, pouring a post-cast concrete layer (4) between the first prefabricated wall panel (1) and the second prefabricated wall panel (2) and on the top surface of the prefabricated floor slab (3) to complete the construction of the lower wall; S5. After the construction of the lower wall is completed, the upper wall is constructed on top of the lower wall according to steps S1-S4, so that the ends of the inverted U-shaped steel bars (71) at the top of the prefabricated wall panel group in the lower wall are exposed from the post-cast concrete layer (4) and inserted into the vertical notches (13) at the bottom of the prefabricated wall panel group in the upper wall; S6. Repeat steps S1-S5 to complete the construction of multi-layer walls from bottom to top.

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