CN216973840U - A connection structure of assembled composite wall panel and external overhanging composite roof with self-tapping nails - Google Patents

Abstract

The utility model discloses a self-tapping screw aggregate block connection structure of a prefabricated composite wall panel and an overhanging composite roof, which belongs to the technical field of prefabricated concrete building structure engineering. The self-tapping screw block is a single-row reinforced mesh concrete sheet of the inner and outer leaves of the composite wall panel with a force-transmitting steel plate, and the externally overhanging composite roof with an L-shaped force-transmitting and connecting steel plate, which is connected by self-tapping screws. The steel-structured concrete thin-walled block with the thickness of the outer concrete thin-board in the steel plate area; the high-performance mortar is laid between the joint of the externally overhanging composite roof and the composite wallboard, which improves the integrity of the joint between the roof and the wallboard; The connection structure of the self-tapping screw block concentrated force transmission and the post-casting strip continuous force transmission and coordinated force can withstand the seismic shear force in the plane of the wall and the roof. The utility model has the technical advantages of good connection shear resistance and durability, the roof and the thermal insulation board at the joint position between the roof and the wall board are continuous, and the joints are filled with foam glue, and the thermal performance is good, and is suitable for the construction of ultra-low energy consumption houses. put up.

Description

A connection structure of assembled composite wall panel and external overhanging composite roof with self-tapping nails

technical field

The utility model relates to a self-tapping screw aggregate block connection structure of a prefabricated composite wall panel and an overhanging composite roof, belonging to the technical field of prefabricated concrete building structure engineering.

Background technique

The technology research and development of ultra-low energy consumption houses has drawn great attention from the engineering community at home and abroad. However, at present, the construction technology of low-storey and ultra-low energy consumption houses in villages and towns, especially the prefabricated construction technology, is very lacking. The technical bottleneck problems existing in the prior art are: (1) The building (house) cover of the traditional prefabricated concrete shear wall structure mostly adopts the laminated floor cover, which has a large amount of cast-in-place, a long construction period, and poor thermal insulation performance. Cold bridges are easily formed at the joints between the lid and the wall and the floor slab, which is difficult to apply to the construction of ultra-low energy consumption houses. At the same time, the joints of the floor are affected by the ambient temperature and the freeze-thaw cycle, so the waterproof performance is difficult to guarantee; (2) The traditional precast concrete shear wall and floor (roof) cover have thick steel bars, large spacing, and cracking of the wall and floor slabs. It is relatively common and has a great impact on the waterproof and thermal insulation performance of buildings; (3) The traditional shear wall steel plate and roof bolt connection technology is not suitable for inner and outer leaf single-row reinforced mesh concrete sheet sandwich polystyrene wall panels and composite houses. For the assembly of the cover, because the polystyrene board is sandwiched between the inner and outer leaf wall panels and the thermal bridge problem is considered, the polystyrene board is not allowed to punch through the bolts, so it is difficult to use the traditional steel plate bolt connection technology to separate the composite wallboard, concrete thin wallboard and composite wallboard. Roof concrete sheet assembly; (4) The price of self-tapping screws is much lower than that of bolts. The connection between the cold-formed thin-walled steel of the light steel keel structure is often connected by self-tapping screws. Two light steel keels, the force transmission between the light steel keels is realized by the engagement with the self-tapping screws, and there is no extrusion friction; however, the inner and outer leaves are single-row reinforced mesh Assembly, which belongs to the assembly of reinforced concrete wall panels and composite roofs, requires friction force and occlusal force at the same time. It is obvious that the current technology of directly connecting light steel keels with self-tapping screws and the assembly of composite wall panels and composite roofs and their force transmission requirements There are significant differences; (5) The traditional prefabricated reinforced concrete roof panels are mostly flat plates. The roof panels and concrete beams or shear walls are assembled in-situ through the post-pouring belt at the supporting end. The slope structure needs to be carried out after the roof construction is completed, and the construction period is long, the cost is high, and the project quality is difficult to guarantee.

Utility model content

The technical problem to be solved by the utility model is to provide a self-tapping screw aggregate block connection structure of a prefabricated composite wall panel and an overhanging composite roof, which has small cast-in-place amount, short construction period and good thermal insulation performance.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is as follows: an assembled composite wall panel and an overhanging composite roof self-tapping nail aggregate block connection structure, including an assembled composite wall panel, an assembled exterior overhanging compound house a cover; a mortar cushion and a foam rubber cushion are arranged between the prefabricated outrigger composite roof and the top of the prefabricated composite wall panel;

The prefabricated composite wall panel includes a composite wall outer leaf concrete slab, a composite wall inner leaf concrete slab, and a thermal insulation board, and the thermal insulation board is arranged between the composite wall outer leaf concrete slab and the composite wall inner leaf concrete slab. The outer-leaf concrete slab of the composite wall and the inner-leaf concrete slab of the composite wall are formed by pouring concrete from the steel mesh of the composite wall; The steel mesh for the composite wall is a single-row steel mesh, which is formed by binding or welding horizontally distributed steel bars and vertically distributed steel bars, and several composite wall force-transmitting steel plates are symmetrically welded on the composite wall steel mesh, and the composite wall force-transmitting steel plates are formed. Distributed on both sides of the prefabricated composite wall panel, the composite wall power transmission steel plate is also welded and connected with the composite wall power transmission steel plate connecting steel bars and the composite wall power transmission steel plate elbow reinforcing steel bars. The side grooves of the force transmission steel plate are reserved on the outside of the force transmission steel plate;

The prefabricated overhanging composite roof includes a composite roof inner blade, a composite roof outer blade and the insulation board, and the insulation board is arranged on the composite roof inner blade and the composite roof outer blade In between, the composite roof inner blade and the composite roof outer blade are formed by pouring concrete from the composite roof reinforcement mesh, and the tie steel bars connect the composite roof inner blade and the composite roof outer blade, the composite roof outer blade, and the composite roof. The insulation boards are connected together;

Several composite roof L-shaped connecting steel plates are welded and connected on the composite roof reinforcement mesh, and the composite roof L-shaped connecting steel plates are symmetrically arranged on both sides of the fabricated composite wall panels, and the composite roof L-shaped connection The steel plate is also welded to connect the L-shaped connecting steel plate connecting steel bar and the L-shaped connecting steel plate elbow reinforcing steel bar. The steel plate side grooves are connected with the composite wall force transmission steel plate by self-tapping screws; the L-shaped connecting steel plate elbow reinforcement bars are pre-buried in the concrete inner blade wing on the L-shaped connecting steel plate of the composite roof. The additional reinforcing steel bar in the middle of the edge height, the diameter of the reinforcing steel bar of the L-shaped connecting steel plate elbow is equal to the diameter of the steel bar of the composite roof steel mesh, and the two ends are bent with 20MM elbows, and the two ends of the elbows are respectively connected with the composite roof. Cover L-shaped connection steel plate embedded flange welding.

Preferably, the L-shaped connecting steel plate connecting steel bars are horizontally distributed steel bars of the composite roof steel mesh.

Preferably, the outer blade of the composite roof is a reinforced concrete slab with a slope, and the inner blade of the composite roof is a flat plate.

Preferably, a wooden block is distributed on the inner side of the two symmetrically arranged force-transmitting steel plates for the composite wall.

Preferably, the mortar cushion is arranged on the top of the outer leaf concrete slab of the composite wall and the inner leaf concrete slab of the composite wall, the foam rubber cushion is arranged on the top of the thermal insulation board, and the foam The top of the rubber cushion layer is connected with the thermal insulation board in the assembled outrigger composite roof.

Preferably, the force-transmitting steel plate for the composite wall is a strip-shaped steel plate, which is prefabricated on the upper part of the composite wall plate in a factory.

Preferably, the surface of the insulation board is provided with dovetail grooves, which are engaged with the dovetail grooves of the inner and outer leaf concrete wall panels.

Preferably, the thermal insulation board is a polystyrene extruded plastic board, a polystyrene foam plastic board or a phenolic foam composite board; the thermal insulation board is flush with the upper and lower edges and the left and right edges of the composite wallboard.

The beneficial effects produced by the above technical solutions are:

(1) The self-tapping screw block solves three major technical problems: first, the problem of integrated connection between the inner and outer leaf concrete thin wall panels of the composite wall panel and the outer overhanging composite roof with fine and dense steel mesh; second, the steel plate bolts connect the concrete For thin wall panels, the existing interface between the concrete thin plate and the sandwich polystyrene panel is the problem of connecting the blind area of construction; the third is the thermal bridge problem existing in the transparent connection between the composite wall panel and the composite roof using steel plates and screws, which is suitable for ultra-low energy consumption houses. Thermal performance requirements.

(2) Composite wall panels and overhanging composite roofs solve three major technical problems: First, it overcomes the drawbacks of traditional shear walls and prefabricated composite roofs that are lapped with steel bars and then poured with a large amount of cast-in-place, self-tapping nails The block connection structure is a dry connection structure, which effectively reduces the amount of wet work on site. Second, the thin and dense steel mesh is used for the inner and outer leaf concrete thin wall panels, which solves the technical problems of the traditional shear wall with thicker steel bars, larger steel bar spacing, and easy cracking of wall panels and roofs. Third, the overhanging composite roof realizes the integral assembly of the sloping roof with outer overhanging eaves, and the composite insulation board inside the roof improves the thermal insulation performance of the building roof, which is suitable for the construction of ultra-low energy consumption houses.

(3) Combined connection structure, which has both the advantages of self-tapping screw block connection centralized force transmission and high-performance mortar cushion continuous force transmission combined connection, which not only solves the problem of continuous force transmission of post-casting belt and self-tapping screw block centralized connection during the use stage The problem of efficient force-transmission and collaborative work. At the same time, the joints between the composite wall panel and the overhanging composite roof concrete sheet are dense and the force transmission is continuous. As well as the problem of cold bridges, it is suitable for the thermal performance requirements of ultra-low energy houses.

Description of drawings

Fig. 1 is a sectional view of the connection structure of the assembled composite wall panel and the self-tapping nail block of the overhanging composite roof;

Figure 2 is a structural cross-sectional view when the fabricated composite wall panel and the overhanging composite roof self-tapping screw block are not connected;

Figure 3 is a schematic cross-sectional view of the connection structure of the assembled composite wall panel and the externally overhanging composite roof mortar cushion;

Figure 4 is a schematic diagram of the steel structure built in the assembled composite wall panel and the overhanging composite roof self-tapping screw block;

Fig. 5 is a schematic diagram of the formation process of self-tapping screw aggregates;

Fig. 6 is a three-dimensional schematic diagram of an assembled composite wall panel and an overhanging composite roof;

In the picture: 1. Prefabricated composite wall panel; 2. Prefabricated external overhanging composite roof; 3. Composite wall outer leaf concrete slab; 4. Composite wall inner leaf concrete slab; 5. Composite wall steel mesh; 6. Knot Reinforcing bars; 7. Composite wall power transmission steel plate connecting steel bars; 8. Composite wall power transmission steel plate elbow reinforced steel bars; 9. Thermal insulation board; 10. Composite wall power transmission steel plate; 11. Power transmission steel plate side grooves; 12. Composite house Cover inner blade; 13. Composite roof outer blade; 14. Composite roof steel mesh; 15. Composite roof L-shaped connecting steel plate; 16. L-shaped connecting steel plate connecting steel bar; 17. L-shaped connecting steel plate elbow reinforcement Rebar; 18. Self-tapping nails; 19. Wood blocks; 20. Mortar cushion; 21. Styrofoam cushion.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

As shown in Figure 1-6, the prefabricated composite wall panel is composed of inner and outer leaf reinforced mesh concrete wall panels connected by tie bars and sandwich insulation panels. , The force-transmitting steel plate welded at the top of the steel mesh of the inner and outer leaf plates of the composite wall panel on the top floor of the building is connected with the L-shaped connecting steel plate welded on the steel mesh of the inner leaf concrete slab of the overhanging composite roof by self-tapping screws.

The overhanging composite roof is a factory prefabricated composite roof composed of inner and outer leaf reinforced mesh concrete sheets connected by tie bars and sandwich insulation boards. The benzene board, the inner leaf reinforced concrete sheet of the composite roof is a flat plate, which is convenient for interior decoration, and the outer leaf board is a reinforced concrete sheet with a certain slope to form a sloping roof. The inner and outer leaf concrete sheets are connected and sealed at the ends of the overhangs to improve the durability of the inner insulation panels. The concrete slab of the inner leaf of the composite roof is disconnected from the wall slab at the connection position with the composite wall slab, and the disconnected part is filled with thermal insulation boards to block the cold bridge at the connection position between the roof and the wall slab, and the composite roof is on both sides of the composite wall slab. The pre-embedded L-shaped connecting steel plate welded on the steel mesh is also used as the force-transmitting steel plate and the connecting steel plate.

Self-tapping nail block, which is the inner and outer leaf single-row reinforced mesh concrete sheet of the composite wall panel with the force-transmitting steel plate, and the inner single-row steel bar of the composite roof with the L-shaped connecting steel plate that also serves as the force-transmitting steel plate and the connecting steel plate. Mesh concrete sheet, the composite wallboard force transmission steel plate connected by self-tapping nails and the L-shaped connecting steel plate of the composite roof are built-in steel-concrete thin-walled slabs with the thickness of the outer profile concrete sheet, it is a steel-concrete combination Thin wall panel blocks. The formation of self-tapping nail aggregates: the inner and outer leaf concrete thin wall panels of prefabricated composite wall panels have welded force-transmitting steel plates in the middle reinforcement mesh, and the inner leaf concrete thin wall panels of prefabricated composite roofs have welded L-shaped connecting steel plates in the middle reinforcement mesh. , Insert the L-shaped connecting steel plate with self-tapping screw holes on the composite roof into the side groove of the power-transmitting steel plate of the composite wall panel and close it, and use the self-tapping screws to freely pass through the L-shaped connecting steel plate holes and then self-tapping to connect the power-transmitting steel plates. The groove embedded in the connecting steel plate is smoothed with mortar to form a built-in steel-structured concrete thin-wall panel block with the thickness of the outer concrete thin plate in the area of the force-transmitting steel plate and the connecting steel plate.

The combined connection structure refers to the combined connection and synergistic force-bearing connection structure of self-tapping screw block connection centralized force transmission and mortar cushion continuous force transmission.

The specific connection relationship of each part is as follows:

Prefabricated composite wall panel 1: The composite wall reinforcement mesh 5 and the thermal insulation board 9 are connected by the tie reinforcement 6, and the prefabricated composite wall panel 1 is formed after pouring the composite wall outer leaf concrete slab 3 and the composite wall inner leaf concrete slab 4.

Assembled overhanging composite roof 2: The composite roof reinforcement mesh 14 and the thermal insulation board 9 are connected by the tie reinforcement 6, and the composite roof inner blade 12 and the composite roof outer blade 13 are poured to form a prefabricated outer overhanging composite roof. roof 2.

The built-in steel structure of self-tapping screw aggregate concrete sheet: the composite wall power transmission steel plate 10 is welded with the distribution steel bars of the inner and outer leaf reinforcement meshes of the wall panel, and is connected with the composite wall power transmission steel plate 7 and the composite wall power transmission steel plate elbow reinforced steel bar 8 Welding; the composite roof L-shaped connecting steel plate 15, which is also used as a force-transmitting steel plate and a connecting steel plate, is welded with the composite roof reinforcement mesh 14, and is welded with the L-shaped connecting steel plate connecting steel bar 16 and the L-shaped connecting steel plate elbow reinforcing steel bar 17. The wood block 19 of the self-tapping force-transmitting steel plate is convenient for self-tapping nails and the composite wall force-transmitting steel plate 10 to be bonded by glass glue or structural glue; the self-tapping screws are used to freely pass through the composite roof L-shaped connection that also serves as the force-transmitting steel plate and the connecting steel plate. The steel plate 15 is connected to the composite wall force transmission steel plate 10 by self-tapping screw holes to form a built-in steel structure of self-tapping screw aggregated concrete thin wall panels.

The self-tapping nail block and the post-casting strip are combined to connect: the side groove 11 of the force-transmitting steel plate recessed into the composite wallboard is smoothed with high-performance mortar, and the mortar cushion 20 and the foam rubber cushion 21 are cured to form a self-contained The tapping block is combined with the mortar cushion strip.

Assembled composite wall panel 1: It is an assembled sandwich thermal insulation concrete composite shear wall panel. It consists of composite wall steel mesh 5, composite wall outer leaf concrete slab 3 and composite wall inner leaf concrete slab 4 to form a single row of reinforced concrete. Thin plate, and the thermal insulation board 9 of the composite wallboard is formed by tying the steel bar 6 to form a composite thermal insulation wallboard, and the self-tapping nail aggregate block connection steel structure is embedded in the wallboard. The prefabricated composite wall panel 1 with self-tapping nails to connect the steel structure has the characteristics of light weight, good thermal insulation performance, seismic performance, fire resistance and durability, and has the advantages of fast connection and cost by connecting steel plate self-tapping nails. low significant advantage.

Assembled external overhanging composite roof 2: It is a prefabricated sandwich-core thermal insulation concrete composite slope roof with overhanging eaves. 13 constitutes a single row of reinforced concrete sheets, and the composite roof insulation board 9 forms a composite roof by tying steel bars 6, and the self-tapping nail aggregate block connection steel structure is embedded in the inner leaf concrete sheet of the roof. The concrete slab of the inner leaf of the composite roof is disconnected from the wall slab concrete at the connection position with the composite wall slab, and the disconnected part is filled with thermal insulation board to block the cold bridge at the connection position between the roof and the wall slab. The prefabricated external overhanging composite roof 2 has the advantages of light weight, good thermal insulation performance, fire resistance performance and durability, and is suitable for buildings such as ultra-low energy consumption houses.

Composite wall outer leaf concrete slab 3 and composite wall inner leaf concrete slab 4: are concrete thin slabs poured from C30-C40 fine stone concrete. plate 9.

Composite wall reinforcement mesh 5, tie reinforcement 6: It is a single-row reinforcement mesh of the inner and outer leaf concrete slabs of the composite wall panel, which is formed by binding or welding horizontally distributed steel bars and vertically distributed steel bars; , The connection structure of the single-row steel mesh of the outer leaf concrete slab.

Composite wall force transmission steel plate connecting steel bar 7: It is the horizontal distribution steel bar of the inner and outer leaf concrete thin-plate reinforcement mesh of the composite wall plate, which is welded with the composite wall force transmission steel plate 10, and the composite wall force transmission steel plate connecting bar 7 is the self-tapping nail aggregate block force transmission important parts of.

Reinforcing steel bar 8 of composite wall power transmission steel plate elbow: It is an additional reinforcing steel bar in the middle of the height of composite wall power transmission steel plate 10. The composite wall power transmission steel plate elbow reinforcement bar 8 has the same diameter as the steel mesh reinforcement, and the two ends are bent with a 20mm bend. The head and the elbows at both ends are welded with the composite wall power transmission steel plate 10 respectively.

Insulation board 9: its surface has a dovetail groove, and the concrete of the inner and outer leaf wall panels is engaged with the dovetail groove of the insulation wallboard to enhance the ability of shear resistance and anti-stripping; the sandwich insulation board can be made of polystyrene extruded board XPS, polystyrene Foamed plastic board EPS or phenolic foam composite board PUR, etc.; the size of the sandwich insulation board is flush with the upper and lower edges and the left and right edges of the composite wallboard. The thermal insulation board inside the composite roof is a trapezoidal section slab with a horizontal lower surface and a certain slope on the upper surface. The concrete slab of the inner leaf of the composite roof is disconnected from the wall slab concrete at the connection position with the composite wall panel, and the disconnected part is filled with thermal insulation board. , to block the cold bridge where the roof and wall panels are connected.

Composite wall power transmission steel plate 10: When the vertical reinforcement distribution spacing of the composite wall reinforcement mesh is 100mm, the composite wall force transmission steel plate 10 is a strip steel plate with a length of 220mm, a width of 40mm, and a thickness of not less than 3mm; the composite wall force transmission steel plate 10 is respectively Prefabricated in the upper part of the wall panel in the factory, the surface layer of the welded composite wall force transmission steel plate 10 should reserve the side groove 11 of the force transmission steel plate into which the L-shaped connecting steel plate 15 of the composite roof can be placed.

The side groove 11 of the force transmission steel plate: After the L-shaped connecting steel plate 15 of the composite roof is embedded and connected with the self-tapping screw 18, it is smoothed with high-performance mortar with a strength grade not lower than M15.

The composite roof inner blade 12 and the composite roof outer blade 13 are concrete sheets made of C30-C40 fine stone concrete. plate 9. The inner leaf reinforced concrete sheet of the composite roof is a flat plate, which is convenient for interior decoration, and the outer leaf plate is a reinforced concrete sheet with a certain slope to form a sloping roof. The inner and outer leaf concrete sheets are connected and sealed at the ends of the overhangs to improve the durability of the inner insulation panels.

The composite roof reinforcement mesh 14 is a single-row reinforcement mesh of the inner and outer leaf concrete slabs of the composite roof, which is formed by binding or welding horizontally distributed steel bars and vertically distributed steel bars.

Composite roof L-shaped connecting steel plate 15: It is an L-shaped connecting steel plate welded on the steel mesh 14 of the composite roof and also serves as a force-transmitting steel plate and a connecting steel plate. The connection position of the L-shaped connecting steel plate and the composite wall power-transmitting steel plate 10 is self-tapping Nail holes, one leg of the L-shaped connecting steel plate is welded to the composite roof reinforcement mesh 14, and after pouring concrete, it is pre-buried in the inner blade of the composite roof, and the other leg extends out of the inner blade. Put the composite roof L-shaped connecting steel plate 15 into the side groove 11 of the force transmission steel plate and connect it with the composite wall force transmission steel plate 10 with self-tapping screws 18; the position where the composite roof L-shaped connecting steel plate 15 passes through the self-tapping screws needs to be After drilling, after the self-tapping screw is drilled into the force-transmitting steel plate, the connecting steel plate and the force-transmitting steel plate have the friction force between the steel plates generated by the extrusion force, and at the same time, the occlusal force between the steel plate and the self-tapping screw can be strengthened.

The L-shaped connecting steel plate connecting steel bar 16 is a horizontally distributed steel bar of the inner and outer leaf concrete thin-plate reinforcement mesh of the composite roof, which is welded with the L-shaped connecting steel plate 15 of the composite roof.

L-shaped connecting steel plate elbow reinforcing bar 17: It is an additional reinforcing bar embedded in the middle of the concrete inner blade flange height with L-shaped connecting steel plate 15 of the composite roof. The L-shaped connecting steel plate elbow reinforcing bar 17 has the same diameter as the steel mesh bar. , 20mm elbows are bent at both ends, and the elbows at both ends are respectively welded with the embedded flanges of the L-shaped connecting steel plate 15 of the composite roof.

Self-tapping screw 18: ST 6.3 type hexagonal tail drill self-tapping screw can be used. The total length of the self-tapping screw is 20mm, the thread is full length, and the self-tapping screw spacing is generally 25-50mm.

Wood block 19: It is a wood block pasted to the back of the upper composite wall power transmission steel plate 10 with adhesives such as glass glue, and its main function is to facilitate self-tapping nails to drill into the power transmission steel plate.

Mortar cushion 20: It is a high-performance mortar cushion with a thickness of not less than 10mm between the inner leaf plate of the prefabricated externally overhanging composite roof 2 and the prefabricated composite wall panel 1. The mortar cushion is a composite wall panel and a composite roof. The continuous force transmission structure between the composite wall panels and the composite roof improves the waterproof and thermal insulation performance of the assembly joints of the composite wallboard and the composite roof.

Foam rubber cushion 21: It is the connecting material between the composite wallboard and the composite roof insulation board, and its thickness is not less than 10mm, which can effectively improve the thermal insulation performance of the joint between the composite wallboard and the composite roof, avoid cold bridges, and is suitable for for the construction of ultra-low energy houses.

The overall construction method is as follows: first, according to the architectural design and structural layout, determine the layout position and specific size of the prefabricated sandwich thermal insulation concrete composite shear wall panel and the overhanging composite roof. Design the wall and roof section thickness and reinforcement according to the load value, carry out the force check calculation of the wall according to the designed wall section size and material strength, and complete the wall and roof design. The roof self-tapping screw aggregate block connection structure and the mortar cushion structure are designed. According to the design plan of the composite wall panel, the overhanging composite roof and its assembly connection nodes, draw detailed structural structural drawings, and carry out the fabrication, transportation and on-site assembly construction of prefabricated composite wall panels and floor slabs.

The construction process of the self-tapping screw block connection structure of the prefabricated composite wallboard and the overhanging composite roof is as follows: 1) The factory prepares the composite wallboard with the force-transmitting steel plate; prepares the composite roof with the L-shaped connecting steel plate; 2. ) Install composite wall panels, apply high-performance mortar on the inner and outer leaf concrete panels at the top of the composite wall panels, install the externally overhanging composite floor, and insert the L-shaped connecting steel plates of the composite floor into the side grooves of the composite wall panel force-transmitting steel plates. , so that the L-shaped connecting steel plate with self-tapping screw holes is closely attached to the composite wallboard power transmission steel, and the mortar cushion on the inner and outer blades of the composite wallboard is bonded to the inner blade of the composite roof; 3) Self-tapping screws are used for free Pass through the L-shaped connecting steel plate of the composite roof, which is also used as a force-transmitting steel plate and a connecting steel plate, and connect the force-transmitting steel plate of the composite wall by self-tapping; 4) Use high-performance mortar to smooth the groove on the side of the force-transmitting steel plate of the composite wall plate; Styrofoam is filled between the polystyrene insulation boards of the joints between the composite wallboard and the composite roof; 6) The external wall and the splicing joint between the roof and the external wall are painted with exterior wall paint, and the interior wall and assembly are painted with interior wall decorative paint sew.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Equivalent replacement or modification of the technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (8)

1. An assembled composite wall panel and an overhanging composite roof self-tapping nail aggregate block connection structure, is characterized in that, comprising an assembled composite wall panel (1), an assembled externally overhanging composite roof (2); the described A mortar cushion layer (20) and a foam rubber cushion layer (21) are arranged between the prefabricated overhanging composite roof (2) and the top of the prefabricated composite wall panel (1); The prefabricated composite wall panel (1) comprises a composite wall outer leaf concrete slab (3), a composite wall inner leaf concrete slab (4), and a thermal insulation board (9), and the thermal insulation board (9) is arranged on the composite wall Between the outer leaf concrete slab (3) and the inner leaf concrete slab (4) of the composite wall, the composite wall outer leaf concrete slab (3) and the composite wall inner leaf concrete slab (4) are poured from the composite wall steel mesh (5). Concrete is formed, and the tie steel bars (6) connect the composite wall outer leaf concrete slab (3), the composite wall inner leaf concrete slab (4) and the thermal insulation board (9) together; the composite wall steel mesh ( 5) is a single-row steel mesh, which is formed by binding or welding horizontally distributed steel bars and vertically distributed steel bars, and symmetrically welded several composite wall force-transmitting steel plates (10) on the composite wall steel mesh (5). The force-transmitting steel plates (10) are distributed on both sides of the prefabricated composite wall panel (1), and the composite-wall force-transmitting steel plates (10) are also connected with the composite-wall force-transmitting steel plates (7) and the composite-wall force-transmitting steel plates, respectively. The elbow reinforcing steel bars (8) are welded and connected, and a side groove (11) of the force transmission steel plate is reserved on the outer side of the force transmission steel plate (10) of the composite wall; The prefabricated overhanging composite roof (2) comprises a composite roof inner blade (12), a composite roof outer blade (13) and the thermal insulation board (9), and the thermal insulation board (9) is arranged on the Between the composite roof inner blade (12) and the composite roof outer blade (13), the composite roof inner blade (12) and the composite roof outer blade (13) are made of composite roof reinforcement. The mesh (14) is formed by pouring concrete, and the tie bars connect the composite roof inner blade (12), the composite roof outer blade (13), and the thermal insulation board (9) together; Several composite roof L-shaped connecting steel plates (15) are welded and connected on the composite roof reinforcement mesh (14), and the composite roof L-shaped connecting steel plates (15) are symmetrically arranged on the prefabricated composite wall panels (1). ) on both sides of the composite roof, the L-shaped connecting steel plate (15) of the composite roof is also welded to connect the L-shaped connecting steel plate connecting steel bar (16) and the L-shaped connecting steel plate elbow reinforcing steel bar (17). One leg of the steel plate (15) is welded on the composite roof reinforcement mesh (14), and the other leg extends into the side groove (11) of the force-transmitting steel plate and is connected to the composite wall through self-tapping screws (18). The strength steel plates (10) are connected together; the L-shaped connecting steel plate elbow reinforcement bars (17) are additional reinforcements on the L-shaped connecting steel plates (15) of the composite roof that are pre-buried in the middle of the height of the inner blade flange of the concrete. Reinforcing bar, the diameter of the L-shaped connecting steel plate elbow reinforcing bar (17) is equal to the diameter of the reinforcing bar of the composite roof reinforcement mesh (14), and 20MM elbows are bent at both ends, and the elbows at both ends are respectively connected with the composite roof. The L-shaped connecting steel plate (15) of the cover is welded with embedded flanges. 2. A kind of assembly type composite wall panel according to claim 1 and the external overhanging composite roof self-tapping nail aggregate block connection structure, characterized in that, the L-shaped connecting steel plate connecting steel bar (16) is the composite roof Cover the horizontally distributed reinforcement of the reinforcement mesh (14). 3. A kind of prefabricated composite wall panel and the overhanging composite roof self-tapping screw aggregate block connection structure according to claim 1, characterized in that, the composite roof outer blade (13) is a sloped Reinforced concrete slab, the composite roof inner blade (12) is a flat plate. 4. A kind of assembled composite wall panel according to claim 1 and the external overhanging composite roof self-tapping nail aggregate block connection structure, characterized in that, in the two symmetrically arranged composite wall force transmission steel plates (10) A wooden block (19) is distributed inside. 5. The assembly-type composite wall panel and the overhanging composite roof self-tapping screw aggregate block connection structure according to claim 1, wherein the mortar cushion (20) is arranged on the outer leaf of the composite wall The top of the concrete slab (3) and the inner leaf concrete slab of the composite wall (4), the foamed rubber cushion (21) is arranged on the top of the thermal insulation board (9), and the foamed rubber cushion ( The top of 21) is connected to the thermal insulation board in the assembled outswing composite roof (2). 6. A kind of prefabricated composite wall panel according to claim 1 and the external overhanging composite roof self-tapping nail aggregate block connection structure, it is characterized in that, described composite wall force transmission steel plate (10) is strip steel plate, in Factory prefabricated on the upper part of the composite wall panel. 7. A kind of prefabricated composite wall panel according to claim 1 and the external overhanging composite roof self-tapping nail aggregate block connection structure, it is characterized in that, the surface of described heat preservation board (9) has dovetail groove, and inside and outside Dovetail snap-fit connections for leaf concrete siding. 8. The assembly-type composite wallboard and the overhanging composite roof self-tapping screw aggregate block connection structure according to claim 1, wherein the thermal insulation board (9) is a polystyrene extruded board or a polystyrene extruded board. A styrene foam plastic board or a phenolic foam composite board; the thermal insulation board (9) is flush with the upper and lower edges and the left and right edges of the composite wallboard.

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