CN216973840U - Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure - Google Patents
Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure Download PDFInfo
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- CN216973840U CN216973840U CN202220603136.1U CN202220603136U CN216973840U CN 216973840 U CN216973840 U CN 216973840U CN 202220603136 U CN202220603136 U CN 202220603136U CN 216973840 U CN216973840 U CN 216973840U
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Abstract
The utility model discloses a self-tapping nail cluster connecting structure for an assembled composite wallboard and an overhanging composite roof, and belongs to the technical field of assembled concrete building structural engineering. The self-tapping screw set block is an inner leaf single-row reinforcing mesh concrete thin plate and an outer leaf single-row reinforcing mesh concrete thin plate of the composite wallboard with the force transmission steel plate, and an outer cantilever composite roof with an L-shaped force transmission and connecting steel plate, and adopts a built-in steel structure concrete thin wallboard block which is connected by self-tapping screws and has the thickness of the outline concrete thin plate in the force transmission steel plate area; high-performance mortar is laid between the joints of the overhanging composite roof and the composite wallboard, so that the integrity of the joints of the roof and the wallboard is improved; the self-tapping nail cluster block is connected with a connection structure in a manner that force is transmitted in a centralized manner and force is transmitted continuously by a post-pouring strip in a coordinated manner, so that the shearing force of the earthquake in the plane of the wall body and the roof is borne. The utility model has the technical advantages of good connection shearing resistance and durability, the heat insulation boards at the joint positions of the roof and the wallboard are continuous, the joints are filled with the foaming adhesive, the thermal performance is good, and the utility model is suitable for building houses with ultra-low energy consumption.
Description
Technical Field
The utility model relates to a self-tapping nail cluster connecting structure for an assembled composite wallboard and an overhanging composite roof, belonging to the technical field of assembled concrete building structure engineering.
Background
The research and development of the technology of the house with ultra-low energy consumption are very concerned in accordance with the engineering boundary at home and abroad. However, the construction technology, especially the assembly type construction technology, of the low-multi-layer ultralow-energy-consumption house in villages and small towns is quite deficient at present. The technical bottleneck problems existing in the prior art are as follows: (1) the floor (house) cover of the traditional fabricated concrete shear wall structure mostly adopts a laminated floor system, the cast-in-place quantity is large, the construction period is long, the heat preservation performance is poor, a cold bridge is easily formed at the seam between the floor system and the wall body and between the floor system plates, and the building (house) cover is difficult to be applied to the construction of houses with ultra-low energy consumption. Meanwhile, the joints of the floor are affected by the ambient temperature and freeze-thaw cycle, and the waterproof performance is difficult to ensure; (2) the traditional precast concrete shear wall and the building (house) cover have thick steel bars and large space, the cracking problem of the wall plate and the floor slab is common, and the waterproof and heat-insulating performance of the building is greatly influenced; (3) the traditional technology for connecting the shear wall steel plate with the roof by bolts is not suitable for assembling the inner leaf single-row reinforcing mesh concrete thin plate sandwich polystyrene board wallboard and the composite roof, because the polystyrene board is clamped between the inner leaf wallboard and the outer leaf wallboard and the thermal bridge problem is considered, the polystyrene board does not allow punching and bolt threading, and thus the composite wall board concrete thin plate and the composite roof concrete thin plate are difficult to be assembled respectively by adopting the traditional steel plate bolt connection technology; (4) the price of the self-tapping screw is much lower than that of the bolt, the cold-formed thin-wall section steel of the light steel keel structure is usually connected by the self-tapping screw, the self-tapping screw penetrates through two connected light steel keels successively, force transmission between the light steel keels is realized through meshing with the self-tapping screw, and no extrusion friction force exists; however, the assembly of the inner and outer leaf single-row reinforcing mesh concrete sheet sandwich polystyrene board wallboard and the composite roof belongs to the assembly of the reinforced concrete wallboard and the composite roof, and simultaneously requires friction force and snap-in force, so that the technology that the existing self-tapping screw is directly connected with the light steel keel is obviously different from the assembly of the composite wallboard and the composite roof and the force transmission requirement of the composite wallboard and the composite roof; (5) traditional prefabricated reinforced concrete roof slab mostly uses the flat board as the main, and the roof slab carries out cast-in-place assembly through the post-cast strip at supporting end and concrete beam or shear force wall, and the eaves and the domatic structure that looses water of roof need be gone on after the roof construction is accomplished, and construction cycle is long, with high costs and engineering quality is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a self-tapping nail cluster connecting structure of an assembled composite wallboard and an outward-projecting composite roof, which has the advantages of small cast-in-place amount, short construction period and good heat insulation performance.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a self-tapping nail cluster connecting structure of an assembled composite wallboard and an overhanging composite roof comprises an assembled composite wallboard and an assembled overhanging composite roof; a mortar cushion layer and a foaming rubber cushion layer are arranged between the assembled cantilever composite roof and the top of the assembled composite wallboard;
the prefabricated composite wallboard comprises a composite wall outer leaf concrete plate, a composite wall inner leaf concrete plate and a heat insulation plate, wherein the heat insulation plate is arranged between the composite wall outer leaf concrete plate and the composite wall inner leaf concrete plate; the composite wall reinforcing mesh is a single-row reinforcing mesh and formed by binding or welding horizontal distribution reinforcing steel bars and vertical distribution reinforcing steel bars, a plurality of composite wall force transmission steel plates are symmetrically welded on the composite wall reinforcing mesh, the composite wall force transmission steel plates are distributed on two sides of the assembled composite wallboard, the composite wall force transmission steel plates are also respectively welded with composite wall force transmission steel plate connecting reinforcing steel bars and composite wall force transmission steel plate elbow reinforcing steel bars, and force transmission steel plate side grooves are reserved on the outer sides of the composite wall force transmission steel plates;
the assembled overhanging composite roof comprises a composite roof inner leaf plate, a composite roof outer leaf plate and the heat-insulation plate, wherein the heat-insulation plate is arranged between the composite roof inner leaf plate and the composite roof outer leaf plate, the composite roof inner leaf plate and the composite roof outer leaf plate are formed by pouring concrete through a composite roof reinforcing mesh, and the composite roof inner leaf plate, the composite roof outer leaf plate and the heat-insulation plate are connected together through tie bars;
a plurality of composite roof L-shaped connecting steel plates are welded and connected on the composite roof steel bar net, the composite roof L-shaped connecting steel plates are symmetrically arranged at two sides of the assembled composite wallboard, the composite roof L-shaped connecting steel plates are also welded and connected with L-shaped connecting steel plate connecting steel bars and L-shaped connecting steel plate elbow reinforcing steel bars, one limb of each composite roof L-shaped connecting steel plate is welded on the composite roof steel bar net, and the other limb of each composite roof L-shaped connecting steel plate extends into the groove on the side surface of the force transmission steel plate and is connected with the force transmission steel plate of the composite wall through a self-tapping screw; the L-shaped connecting steel plate elbow reinforcing steel bars are reinforcing steel bars which are pre-embedded on the L-shaped connecting steel plate of the composite roof and are attached to the middle of the wing edge height of the concrete inner blade, the diameter of the L-shaped connecting steel plate elbow reinforcing steel bars is equal to that of the reinforcing steel bars of the composite roof reinforcing steel bar net, the two ends of the L-shaped connecting steel plate elbow reinforcing steel bars are bent to form 20MM elbows, and the elbows at the two ends of the L-shaped connecting steel plate elbow reinforcing steel bar net are respectively welded with the pre-embedded wing edges of the L-shaped connecting steel plate of the composite roof.
Preferably, the L-shaped connecting steel plate connecting steel bars are horizontally distributed steel bars of the composite roof reinforcing mesh.
Preferably, the composite roof outer blade plate is a reinforced concrete slab with a slope, and the composite roof inner blade plate is a flat plate.
Preferably, a wood block is distributed on the inner sides of the two symmetrically arranged force transmission steel plates of the composite wall.
Preferably, the mortar cushion layer is arranged on the tops of the composite wall outer leaf concrete slab and the composite wall inner leaf concrete slab, the foam rubber cushion layer is arranged on the top of the heat insulation board, and the top of the foam rubber cushion layer is connected with the heat insulation board in the assembled cantilever composite roof.
Preferably, the composite wall force transmission steel plate is a strip steel plate and is prefabricated on the upper part of the composite wall plate in a factory.
Preferably, the surface of the heat insulation plate is provided with a dovetail groove which is connected with the dovetail grooves of the inner and outer leaf concrete wall plates in a meshing manner.
Preferably, the heat insulation board is a polystyrene extruded board or a polystyrene foam plastic board or a phenolic foam composite board; the heat insulation plate is flush with the upper edge, the lower edge, the left edge and the right edge of the composite wallboard.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
(1) the self-tapping nail cluster solves three technical problems: firstly, the problem of the integrated connection of the inner leaf concrete thin wallboard and the outer leaf concrete thin wallboard of the composite wallboard and the externally-cantilevered composite roof with the fine and dense reinforcing mesh is solved; secondly, the steel plate is connected with the concrete thin wall plate through bolts, and the interface of the concrete thin plate and the sandwich polystyrene board is a connection construction blind area; thirdly, the composite wall board and the composite roof are in through connection through steel plate screws, so that the heat bridge problem is solved, and the heat engineering performance requirements of the house with ultralow energy consumption are met.
(2) Three technical problems are solved to composite wall panel and outer composite roof of choosing: firstly, overcome the big drawback of traditional shear force wall and the cast-in-place volume of prefabricated superimposed sheet roof reinforcing bar overlap joint post-cast strip, self-tapping nail colleting joint structure is dry-type joint structure, has effectively reduced the on-the-spot wet work volume. Secondly, the thin concrete wallboards with the inner leaves and the outer leaves are made of thin and dense steel bar meshes, so that the technical problems that the traditional shear wall is thick in distributed steel bar diameter, large in steel bar distance and easy to crack wallboards and roofs are solved. Thirdly, the overhanging composite roof realizes the integral assembly of the pitched roof with the outer cornice, and the composite heat-insulating plate inside the roof improves the heat-insulating property of the building roof and is suitable for building houses with ultra-low energy consumption.
(3) The combined connection structure has the advantages of combined connection of centralized force transmission of self-tapping screw cluster block connection and continuous force transmission of a high-performance mortar cushion layer, and not only solves the problem of high-efficiency stress of cooperative work of continuous force transmission of a post-cast strip and centralized force transmission of the self-tapping screw cluster block in a use stage. Meanwhile, the connecting joints of the composite wall boards and the outer cantilever composite roof concrete thin plates are compact and continuous in force transmission, and the foaming thermal insulation materials are filled between the composite wall boards and the outer cantilever composite roof thermal insulation plates, so that the problems of high-efficiency stress, rainwater leakage prevention and cold bridge prevention are solved, and the method is suitable for the requirements of ultralow-energy-consumption house thermal performance.
Drawings
FIG. 1 is a sectional view of a connecting structure of an assembled composite wall panel and a self-tapping nail cluster of an overhung composite roof;
FIG. 2 is a sectional view of the assembled composite wall panel and the self-tapping nail cluster of the cantilever composite roof, shown in an unconnected configuration;
FIG. 3 is a schematic sectional view of a connection structure of an assembled composite wall panel and a mortar bed of an overhanging composite roof;
FIG. 4 is a schematic view of the built-in steel structure of the self-tapping nail cluster of the fabricated composite wall panel and the cantilever composite roof;
FIG. 5 is a schematic illustration of a self-tapping nail cluster formation process;
FIG. 6 is a perspective view of an assembled composite wall panel and an overhanging composite roof;
in the figure: 1. an assembled composite wallboard; 2. an assembled cantilever composite roof; 3. composite wall outer leaf concrete slabs; 4. composite wall inner leaf concrete slab; 5. a composite wall reinforcing mesh; 6. tying the reinforcing steel bars; 7. the force transmission steel plate of the composite wall is connected with the steel bar; 8. force transmission steel plate elbow reinforcing steel bars of the composite wall; 9. a thermal insulation board; 10. a composite wall force transmission steel plate; 11. a groove is formed in the side surface of the force transmission steel plate; 12. a composite roof inner leaf plate; 13. composite roof outer leaf plates; 14. a composite roof reinforcing mesh; 15. the L-shaped connecting steel plate of the composite roof; 16. the L-shaped connecting steel plate is connected with the steel bar; 17. l-shaped connecting steel plate elbow reinforcing steel bars; 18. self-tapping screw; 19. wood blocks; 20. a mortar cushion layer; 21. a foam rubber cushion layer.
Detailed Description
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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1-6, the fabricated composite wall panel is an inner leaf single-row reinforced concrete sheet sandwich polystyrene panel wall panel composed of an inner leaf reinforced concrete wall panel and an outer leaf reinforced concrete wall panel connected by tie bars and a sandwich insulation board, wherein a force transmission steel plate welded at the upper end of the inner leaf reinforced concrete web of the composite wall panel at the top layer of the building and an L-shaped connecting steel plate welded on the reinforced concrete web of the inner leaf of the outer cantilever composite roof are connected by self-tapping nails.
The composite roof consists of steel bar net concrete sheets connected with tie bars, inner leaf steel bar net concrete sheets and sandwiched heat insulating boards, and has eaves for indoor decoration and inner leaf steel bar net concrete sheets. The inner leaf concrete thin plate and the outer leaf concrete thin plate are connected and sealed at the cornice end part so as to improve the durability of the inner heat-insulation plate. The composite roof inner leaf concrete slab is disconnected with the composite wallboard connecting position wallboard concrete, the disconnected position is filled by the insulation board, so that a cold bridge at the connecting position of the composite roof and the wallboard is separated, the composite roof is embedded at two sides of the composite wallboard and is connected with the L-shaped connecting steel plate serving as a force transmission steel plate and a connecting steel plate by welding on the reinforcing mesh, and the force transmission steel plate at the upper end of the composite wallboard is connected with a self-tapping screw.
The self-tapping screw assembly is a steel-concrete combined thin wallboard block, and is an inner and outer leaf single-row reinforcing mesh concrete thin plate of a composite wallboard with a force transmission steel plate, and an inner single-row reinforcing mesh concrete thin plate of a composite roof with an L-shaped connecting steel plate serving as the force transmission steel plate and the connecting steel plate. Forming a self-tapping nail cluster: the method comprises the steps of arranging welding force transmission steel plates on a reinforcing net in the middle of inner and outer leaf concrete thin wallboards of a prefabricated composite wallboard, arranging welding L-shaped connecting steel plates on a reinforcing net in the middle of the inner leaf concrete thin wallboard of a prefabricated composite roof, embedding the L-shaped connecting steel plates with self-tapping screw holes in the composite roof into grooves in the side faces of the force transmission steel plates of the composite wallboard and pressing close to the grooves, freely penetrating the self-tapping screws through the L-shaped connecting steel plates to form the self-tapping connecting force transmission steel plates, and trowelling mortar for the grooves embedded in the connecting steel plates to form a built-in steel-structure concrete thin wallboard block with the thickness of the force transmission steel plates and the outline concrete thin plates in the connecting steel plate area.
The combined connection structure refers to a combined connection and cooperative stress connection structure for connecting a self-tapping nail cluster block to concentrate force transfer and continuously transferring force of a mortar cushion layer.
The connection relationship of each part is as follows:
assembled composite wall panel 1: the composite wall reinforcing mesh 5 and the heat insulation plate 9 are connected through the tie bars 6, and the composite wall outer leaf concrete plate 3 and the composite wall inner leaf concrete plate 4 are poured to form the fabricated composite wallboard 1.
Assembled composite roof of choosing outward 2: the composite roof reinforcing mesh 14 and the heat insulation board 9 are connected through tie bars 6, and the assembled cantilever composite roof 2 is formed after the composite roof inner leaf plates 12 and the composite roof outer leaf plates 13 are poured.
Built-in steel structure of self-tapping nail aggregate concrete sheet: the composite wall force transmission steel plate 10 is welded with the reinforcing steel bar mesh distribution reinforcing steel bars inside and outside the wallboard, and is welded with the composite wall force transmission steel plate connecting reinforcing steel bar 7 and the composite wall force transmission steel plate elbow reinforcing steel bar 8; the L-shaped connecting steel plate 15 of the composite roof, which is also used as the force transmission steel plate and the connecting steel plate, is welded with the reinforcing mesh 14 of the composite roof, and is welded with the L-shaped connecting steel plate connecting reinforcing bar 16 and the L-shaped connecting steel plate elbow reinforcing bar 17. The wood block 19 of the self-tapping power transmission steel plate of the self-tapping screw is convenient to be bonded with the composite wall power transmission steel plate 10 through glass cement or structural adhesive; the self-tapping screw freely penetrates through the L-shaped connecting steel plate 15 of the composite roof, which is also used as a force transmission steel plate and a connecting steel plate, and the self-tapping screw hole is self-tapping connected with the composite wall force transmission steel plate 10 to form the built-in steel structure of the self-tapping screw block concrete thin wall plate.
The self-tapping nail cluster block is connected with the post-cast strip in a combined manner: and (3) trowelling the force transmission steel plate side grooves 11 recessed into the composite wallboard by using high-performance mortar, and curing the mortar cushion layer 20 and the foam rubber cushion layer 21 to form a self-tapping nail cluster block which is connected with the mortar cushion layer strip in a combined manner.
Assembled composite wall panel 1: the assembled sandwich heat-insulating concrete composite shear wall board is characterized in that a single-row reinforced concrete thin plate is formed by a composite wall reinforcing mesh 5, a composite wall outer leaf concrete plate 3 and a composite wall inner leaf concrete plate 4, the single-row reinforced concrete thin plate and a heat-insulating plate 9 of the composite wall board form the composite heat-insulating wall board through tie bars 6, and self-tapping nail cluster block connecting steel members are pre-embedded in the wall board. The assembled composite wall panel 1 with the self-tapping nail cluster connecting steel structure has the characteristics of light weight, good thermal insulation performance, good seismic resistance, good fire resistance and good durability, and has the remarkable advantages of quick connection and low manufacturing cost through the connecting steel plate self-tapping nail set.
Assembled composite roof of choosing outward 2: the assembled sandwich heat-insulating concrete composite slope roof with cornices is characterized in that a single-row reinforced concrete thin plate is formed by a composite roof reinforcing mesh 14, a composite roof inner blade plate 12 and a composite roof outer blade plate 13, a composite roof is formed by a composite roof heat-insulating plate 9 through tie bars 6, and self-tapping screw set block connecting steel structures are pre-embedded in the roof inner blade concrete thin plate. The concrete of the inner leaf concrete slab of the composite roof is disconnected with the concrete of the wall slab at the connecting position of the composite wall slab, and the disconnected position is filled with the insulation board so as to block the cold bridge at the connecting position of the roof and the wall slab. The assembled cantilever composite roof 2 has the advantages of light weight, good heat insulation performance, fire resistance 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: the composite wallboard is a concrete thin plate formed by pouring C30-C40 fine stone concrete, the inner leaf concrete thin plate and the outer leaf concrete thin plate of the composite wallboard are tied through tie steel bars 6, and an internal composite heat insulation plate 9 is arranged.
Composite wall reinforcing mesh 5, tie bar 6: the single-row reinforcing mesh of the inner leaf concrete plate and the outer leaf concrete plate of the composite wallboard is formed by binding or welding horizontal distributed reinforcing steel bars and vertical distributed reinforcing steel bars; the drawknot steel bars 6 are connecting structural steel bars of single-row steel bar meshes of the drawknot inner leaf concrete plate and the drawknot outer leaf concrete plate.
The composite wall force transmission steel plate is connected with the steel bars 7: the self-tapping screw is characterized in that horizontally distributed steel bars of a concrete sheet steel bar mesh inside and outside a composite wallboard are welded with a composite wall force transmission steel plate 10, and a composite wall force transmission steel plate connecting steel bar 7 is an important component of force transmission of a self-tapping screw block.
The composite wall passes power steel sheet elbow reinforcing bar 8: the reinforced steel bar is added in the middle of the height of the composite wall force transmission steel plate 10, the reinforced steel bar 8 of the elbow of the composite wall force transmission steel plate and the reinforced mesh steel bar have the same diameter, the two ends of the elbow bend are bent to form 20mm elbows, and the elbows at the two ends are respectively welded with the composite wall force transmission steel plate 10.
And (3) a heat preservation plate 9: the surface of the wall board is provided with a dovetail groove, and the concrete of the inner blade wall board and the outer blade wall board are meshed with the dovetail groove of the heat-insulating wall board, so that the shear resistance and the anti-stripping capability are enhanced; the sandwich heat-insulation plate can adopt a polystyrene extruded sheet XPS, a polystyrene foam plastic sheet EPS or a phenolic foam composite sheet PUR and the like; the size of the sandwich insulation board is flush with the upper edge, the lower edge, the left edge and the right edge of the composite wallboard. The inside heated board of compound roof is lower surface level, the trapezoidal cross-section board that the upper surface has a grade, and leaf concrete slab breaks off at the wallboard concrete with compound wallboard hookup location in the compound roof, and the disconnection position adopts the heated board to fill to the cold bridge of separation roof and wallboard hookup location.
Composite wall force transmission steel plate 10: when the vertical steel bar distribution interval of the composite wall reinforcing mesh is 100mm, the composite wall force transmission steel plate 10 is a strip-shaped steel plate with the length of 220mm, the width of 40mm and the thickness of not less than 3 mm; the composite wall force transmission steel plates 10 are prefabricated on the upper portions of the wall plates in a factory respectively, and force transmission steel plate side grooves 11, into which the L-shaped connecting steel plates 15 of the composite roof can be placed, are reserved on the surface layer of the area where the composite wall force transmission steel plates 10 are welded.
Force-transmitting steel plate side face groove 11: after the L-shaped connecting steel plate 15 of the composite roof is embedded inside and connected by the self-tapping screw 18, high-performance mortar with the strength grade not lower than M15 is used for leveling.
The composite inner roof leaf 12 and the composite outer roof leaf 13: the composite roof is a concrete thin plate formed by pouring C30-C40 fine stone concrete, the inner leaf concrete thin plate and the outer leaf concrete thin plate of the composite roof are tied through tie steel bars 6, and the interior of the composite roof is compounded with an insulation board 9. The composite roof has inner leaf reinforced concrete sheet for easy indoor decoration and outer leaf for constituting slope roof with certain gradient reinforced concrete sheet. The inner leaf concrete thin plate and the outer leaf concrete thin plate are connected and sealed at the cornice end part so as to improve the durability of the inner heat-insulation plate.
Composite roof reinforcing mesh 14: the single-row reinforcing mesh of the inner leaf concrete slab and the outer leaf concrete slab of the composite roof is formed by binding or welding horizontally distributed reinforcing steel bars and vertically distributed reinforcing steel bars.
The L-shaped connecting steel plate 15 of the composite roof: the L-shaped connecting steel plate is welded on a composite roof reinforcing mesh 14 and also serves as a force transmission steel plate and a connecting steel plate, a self-tapping nail hole is formed in the connecting position of the L-shaped connecting steel plate and the composite wall force transmission steel plate 10, one limb of the L-shaped connecting steel plate is welded on the composite roof reinforcing mesh 14, the L-shaped connecting steel plate is embedded in an inner leaf plate of a composite roof after concrete is poured, and the other limb of the L-shaped connecting steel plate extends out of the inner leaf plate. Placing the L-shaped connecting steel plate 15 of the composite roof into the lateral groove 11 of the force transmission steel plate and connecting the L-shaped connecting steel plate with the force transmission steel plate 10 of the composite wall by using a self-tapping screw 18; the position that compound roof L shape connecting steel plate 15 passed the self-tapping screw needs punch, and after the self-tapping screw drilled into biography power steel sheet, connecting steel plate and biography power steel sheet had the frictional force between the steel sheet that should the extrusion force produce, still can strengthen the occlusal force of steel sheet and self-tapping screw simultaneously.
L-shaped connecting steel plate connecting reinforcing steel 16: the steel bars are horizontally distributed steel bars of a composite roof inner leaf concrete sheet steel bar mesh and are welded with an L-shaped connecting steel plate 15 of the composite roof.
L-shaped connecting steel plate elbow reinforcing steel bar 17: the L-shaped connecting steel plate 15 of the composite roof is embedded in the reinforcing steel bars attached to the middle of the wing edge height of the concrete inner blade plate, the L-shaped connecting steel plate elbow reinforcing steel bars 17 and the reinforcing mesh steel bars have the same diameter, the two ends of the L-shaped connecting steel plate elbow are bent by 20mm, and the two ends of the L-shaped connecting steel plate elbow are respectively welded with the embedded flange of the L-shaped connecting steel plate 15 of the composite roof.
The self-tapping screw 18: the ST 6.3 type hexagonal tail drill self-tapping screw can be selected, the total length of the self-tapping screw is 20mm, the through length of the thread is long, and the distance between the self-tapping screws is 25-50mm generally.
Wood block 19: the wood block is adhered to the back of the force transmission steel plate 10 of the upper composite wall by adhesives such as glass cement and the like, and the main function of the wood block is to facilitate the self-tapping screw to drill into the force transmission steel plate.
Mortar cushion layer 20: the high-performance mortar cushion layer is characterized in that the thickness between the inner blade plate of the assembled cantilever composite roof 2 and the assembled composite wallboard 1 is not less than 10mm, the mortar cushion layer is a continuous force transmission structure between the composite wallboard and the composite roof, and the waterproof and heat-insulating performances of the assembly joint of the composite wallboard and the composite roof are improved.
Foam cushion layer 21: the composite wallboard and composite roof insulation board connecting material is a connecting material of the composite wallboard and the composite roof insulation board, the thickness of the composite wallboard is not less than 10mm, the insulation performance of a joint of the composite wallboard and the composite roof can be effectively improved, a cold bridge is avoided, and the composite wallboard and composite roof insulation board connecting material is suitable for building of a house with ultra-low energy consumption.
The integral construction method comprises the following steps: firstly, determining the arrangement positions and the specific sizes of the assembled sandwich heat-insulating concrete composite shear wall plate and the overhanging composite roof according to the building design and the structural arrangement. The method comprises the steps of designing the wall body and the cross section thickness and the reinforcing bars of the roof according to a load value, carrying out stress checking calculation on the wall body according to the designed cross section size and the material strength of the wall body, and designing a self-tapping nail cluster connecting structure and a mortar cushion structure of the composite wallboard and the cantilever composite roof after the design of the wall body and the roof is completed. Drawing a detailed structural drawing according to the design scheme of the composite wallboard, the cantilever composite roof and the assembly connection node thereof, and performing the manufacturing, transportation and on-site assembly construction of the prefabricated composite wallboard and the floor slab.
The construction process of the self-tapping nail cluster block connecting structure of the assembled composite wall panel and the cantilever composite roof is as follows: 1) preparing a composite wallboard with a force transmission steel plate in a factory; preparing a composite roof with an L-shaped connecting steel plate; 2) installing a composite wallboard, smearing high-performance mortar on the inner leaf concrete slab and the outer leaf concrete slab at the top end of the composite wallboard, installing an overhanging composite floor system, embedding an L-shaped connecting steel plate of the composite floor system into a groove on the side surface of a force transmission steel plate of the composite wallboard, enabling the L-shaped connecting steel plate with self-tapping nail holes to be tightly attached to the force transmission steel of the composite wallboard, and bonding mortar cushion layers on the inner leaf plate and the outer leaf plate of the composite wallboard with inner leaf plates of a composite roof; 3) a self-tapping screw freely penetrates through an L-shaped connecting steel plate of the composite roof, which is also used as a force transmission steel plate and a connecting steel plate, and is connected with the force transmission steel plate of the composite wall in a self-tapping manner; 4) trowelling a groove on the side surface of a force transmission steel plate of the composite wallboard by high-performance mortar; 5) filling foaming glue between the composite wallboard and the polyphenyl thermal insulation plate at the joint of the composite roof; 6) the outer wall and the splicing seam of the roof and the outer wall are painted by adopting outer wall painting paint, and the inner wall and the assembly seam are painted by adopting inner wall decorative paint.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. A self-tapping nail cluster connecting structure of an assembled composite wallboard and an overhanging composite roof is characterized by comprising an assembled composite wallboard (1) and an assembled overhanging composite roof (2); a mortar cushion layer (20) and a foam rubber cushion layer (21) are arranged between the assembled cantilever composite roof (2) and the top of the assembled composite wallboard (1);
the prefabricated composite wallboard (1) comprises a composite wall outer leaf concrete plate (3), a composite wall inner leaf concrete plate (4) and an insulation plate (9), wherein the insulation plate (9) is arranged between the composite wall outer leaf concrete plate (3) and the composite wall inner leaf concrete plate (4), the composite wall outer leaf concrete plate (3) and the composite wall inner leaf concrete plate (4) are formed by pouring concrete through a composite wall reinforcing steel bar net (5), and the composite wall outer leaf concrete plate (3), the composite wall inner leaf concrete plate (4) and the insulation plate (9) are connected together through tie reinforcing steel bars (6); the composite wall reinforcing mesh (5) is a single-row reinforcing mesh and formed by binding or welding horizontally distributed reinforcing steel bars and vertically distributed reinforcing steel bars, a plurality of composite wall force transmission steel plates (10) are symmetrically welded on the composite wall reinforcing mesh (5), the composite wall force transmission steel plates (10) are distributed on two sides of the assembled composite wallboard (1), the composite wall force transmission steel plates (10) are also respectively welded with composite wall force transmission steel plate connecting reinforcing steel bars (7) and composite wall force transmission steel plate elbow reinforcing steel bars (8), and force transmission steel plate side grooves (11) are reserved on the outer sides of the composite wall force transmission steel plates (10);
the assembled cantilever composite roof (2) comprises a composite roof inner leaf plate (12), a composite roof outer leaf plate (13) and the heat insulation plate (9), wherein the heat insulation plate (9) is arranged between the composite roof inner leaf plate (12) and the composite roof outer leaf plate (13), the composite roof inner leaf plate (12) and the composite roof outer leaf plate (13) are formed by pouring concrete through a composite roof reinforcing mesh (14), and the composite roof inner leaf plate (12), the composite roof outer leaf plate (13) and the heat insulation plate (9) are connected together through tie bars;
a plurality of composite roof L-shaped connecting steel plates (15) are welded and connected on the composite roof reinforcing mesh (14), the composite roof L-shaped connecting steel plates (15) are symmetrically arranged on two sides of the assembled composite wallboard (1), the composite roof L-shaped connecting steel plates (15) are also welded and connected with L-shaped connecting steel plate connecting steel bars (16) and L-shaped connecting steel plate elbow reinforcing steel bars (17), one limb of each composite roof L-shaped connecting steel plate (15) is welded on the composite roof reinforcing mesh (14), and the other limb of each composite roof L-shaped connecting steel plate extends into the groove (11) on the side of the force transmission steel plate and is connected with the force transmission steel plate (10) of the composite wall through a self-tapping screw (18); the L-shaped connecting steel plate elbow reinforcing steel bars (17) are reinforcing steel bars which are pre-embedded in the middle of the wing edge height of the concrete inner blade and are attached to the L-shaped connecting steel plate (15) of the composite roof, the diameter of the L-shaped connecting steel plate elbow reinforcing steel bars (17) is equal to that of the reinforcing steel bars of the composite roof reinforcing mesh (14), 20MM elbows are bent at two ends, and the elbows at the two ends are respectively welded with the pre-embedded flanges of the L-shaped connecting steel plate (15) of the composite roof.
2. The self-tapping nail cluster connecting structure of assembled composite wall panel and overhanging composite roof as claimed in claim 1, wherein the L-shaped connecting steel plate connecting bars (16) are horizontally distributed bars of the composite roof reinforcing mesh (14).
3. The self-tapping nail cluster connecting structure of fabricated composite wall panel and exterior cantilever composite roof according to claim 1, wherein the composite roof outer leaf (13) is a reinforced concrete slab with slope, and the composite roof inner leaf (12) is a flat plate.
4. The connecting structure of the assembled composite wall panel and the overhung composite roof self-tapping nail cluster according to claim 1, wherein a wood block (19) is distributed on the inner sides of the two symmetrically arranged composite wall force transmission steel plates (10).
5. The self-tapping nail cluster connecting structure of the fabricated composite wall panel and the cantilever composite roof as claimed in claim 1, wherein the mortar cushion layer (20) is disposed on top of the composite wall outer leaf concrete plate (3) and the composite wall inner leaf concrete plate (4), the foam cushion layer (21) is disposed on top of the insulation board (9), and top of the foam cushion layer (21) is connected with the insulation board in the fabricated cantilever composite roof (2).
6. The self-tapping nail cluster connecting structure of the assembled composite wall panel and the cantilever composite roof according to claim 1, wherein the force transmission steel plate (10) of the composite wall is a strip-shaped steel plate, and is prefabricated on the upper part of the composite wall panel in a factory.
7. The connecting structure of the assembled composite wall panel and the self-tapping nail cluster of the cantilever composite roof as claimed in claim 1, wherein the insulation board (9) has a dovetail groove on the surface thereof, and is engaged with the dovetail grooves of the inner and outer leaf concrete wall panels.
8. The connecting structure of the assembled composite wall panel and the self-tapping nail cluster of the cantilever composite roof as claimed in claim 1, wherein the heat-insulating board (9) is a polystyrene extruded board or a polystyrene foam plastic board or a phenolic foam composite board; the heat insulation plate (9) is flush with the upper edge, the lower edge, the left edge and the right edge of the composite wallboard.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220603136.1U CN216973840U (en) | 2022-03-19 | 2022-03-19 | Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220603136.1U CN216973840U (en) | 2022-03-19 | 2022-03-19 | Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687600A (en) * | 2022-03-19 | 2022-07-01 | 北京工业大学 | Self-tapping nail cluster connecting structure and method for assembled composite wallboard and cantilever composite roof |
| CN114687600B (en) * | 2022-03-19 | 2024-07-09 | 北京工业大学 | Assembled composite wallboard and overhanging composite roof self-tapping screw block connection structure and manufacturing method |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687600A (en) * | 2022-03-19 | 2022-07-01 | 北京工业大学 | Self-tapping nail cluster connecting structure and method for assembled composite wallboard and cantilever composite roof |
| CN114687600B (en) * | 2022-03-19 | 2024-07-09 | 北京工业大学 | Assembled composite wallboard and overhanging composite roof self-tapping screw block connection structure and manufacturing method |
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