CN114687600B - A self-tapping screw block connection structure and method for assembled composite wall panels and cantilevered composite roofs - Google Patents
A self-tapping screw block connection structure and method for assembled composite wall panels and cantilevered composite roofs Download PDFInfo
- Publication number
- CN114687600B CN114687600B CN202210273916.9A CN202210273916A CN114687600B CN 114687600 B CN114687600 B CN 114687600B CN 202210273916 A CN202210273916 A CN 202210273916A CN 114687600 B CN114687600 B CN 114687600B
- Authority
- CN
- China
- Prior art keywords
- composite
- roof
- plate
- force transmission
- wallboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a self-tapping screw block connection structure and a self-tapping screw block connection method for an assembled composite wallboard and an overhanging composite roof, and belongs to the technical field of assembled concrete building structure engineering. The self-tapping screw assembly is an inner and outer leaf single-row steel mesh concrete sheet of a composite wallboard with a force transmission steel plate, and an outer-picking composite roof with an L shape and serving as a force transmission and connection steel plate, and is a built-in steel structure concrete thin wallboard block with the thickness of the concrete sheet outside the force transmission steel plate area connected by the self-tapping screw; high-performance mortar is paved between the seams of the overhanging composite roof and the composite wallboard, so that the integrity of the seams of the roof and the wallboard is improved; the connecting structure of self-tapping screw assembly for centralizing force transmission and continuous force transmission and cooperative stress of post-pouring strip bears earthquake shear force in the plane of wall body and roof. The invention has the technical advantages of good connection shearing resistance and durability, the heat insulation board at the joint position of the roof and the wallboard is continuous, the joint is filled with the foaming glue, the thermal performance is good, and the invention is suitable for building houses with ultra-low energy consumption.
Description
Technical Field
The invention relates to a self-tapping screw block connection structure of an assembled composite wallboard and an overhanging composite roof and a manufacturing method thereof, belonging to the technical field of assembled concrete building structure engineering.
Background
The technical development of the ultra-low energy consumption house is consistent and very concerned by the engineering world at home and abroad. However, the construction technology of the low-energy-consumption multi-layer house in villages and towns, especially the assembly construction technology is quite deficient. The technical bottleneck problems existing in the prior art are as follows: (1) The building (house) cover of the traditional assembly type concrete shear wall structure mostly adopts an overlapped building cover, has large cast-in-situ quantity, long construction period and poor heat insulation performance, is easy to form a cold bridge at joints among the building cover, a wall body and the building cover, and is difficult to be applied to building of houses with ultra-low energy consumption. Meanwhile, the joint of the floor is affected by the ambient temperature and freeze thawing cycle, so that the waterproof performance is difficult to ensure; (2) The traditional precast concrete shear wall and building (house) cover steel bars are thick and have large intervals, the cracking problem of wallboards and floors is more common, and the waterproof and heat-insulating properties of the building are greatly influenced; (3) The traditional technology for bolting steel plates of shear walls and roofs is not suitable for assembling inner and outer She Shanpai steel mesh concrete thin plate sandwich polyphenyl plate wallboards and composite roofs, because polyphenyl plates are clamped between inner and outer leaf wallboards and the problem of thermal bridging is considered, the polyphenyl plates do not allow punching bolts to pass through, and thus the traditional steel plate bolting technology is difficult to assemble composite wallboard concrete thin plates and composite roofs respectively; (4) The price of the self-tapping screw is much lower than that of a bolt, the cold-formed thin-wall section steel of the light steel keel structure is connected by the self-tapping screw, the self-tapping screw penetrates through two light steel keels connected in sequence, and force transmission between the light steel keels is realized through engagement with the self-tapping screw without extrusion friction force; however, the assembly of the inner and outer She Shan rows of reinforced concrete thin plate sandwich polyphenyl plate wallboards and the composite roof belongs to the assembly of the reinforced concrete wallboards and the composite roof, and simultaneously friction force and biting force are required, so that the existing technology for directly connecting the light steel keels by the self-tapping nails is obviously different from the assembly of the composite wallboards and the composite roof and the force transmission requirement thereof; (5) The traditional prefabricated reinforced concrete roof plate mainly comprises flat plates, the roof plate is cast-in-situ assembled with a concrete beam or a shear wall at a supporting end through a post-pouring belt, cornices and water-scattering slope structures of the roof are required to be carried out after the construction of the roof is completed, the construction period is long, the cost is high, and the engineering quality is difficult to guarantee.
Disclosure of Invention
The invention aims to solve the technical problems of providing a self-tapping screw block connection structure and a construction method for an assembled composite wallboard and an overhanging composite roof, which have the advantages of small cast-in-situ quantity, short construction period and good heat preservation performance.
In order to solve the technical problems, the invention adopts the following technical scheme: a self-tapping screw block connection structure of an assembled composite wallboard and an overhanging composite roof comprises the assembled composite wallboard and the assembled overhanging composite roof; a mortar cushion layer and a foaming cushion layer are arranged between the assembled overhanging composite roof and the top of the assembled composite wallboard;
The assembled 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 outer leaf concrete plate and the composite wall inner leaf concrete plate are formed by pouring concrete through a composite wall reinforcing steel mesh, and the composite wall outer leaf concrete plate, the composite wall inner leaf concrete plate and the heat insulation plate are connected together through tie steel bars; the composite wall reinforcing steel bar net is a single-row reinforcing steel bar net and is 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 steel bar net, 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 respectively welded with a composite wall force transmission steel plate connecting reinforcing steel bar and a composite wall force transmission steel plate elbow reinforcing steel bar, and a force transmission steel plate side groove is reserved on the outer side of the composite wall force transmission steel plate;
The assembled overhanging composite roof comprises a composite roof inner blade plate, a composite roof outer blade plate and the heat-insulating plate, wherein the heat-insulating plate is arranged between the composite roof inner blade plate and the composite roof outer blade plate, the composite roof inner blade plate and the composite roof outer blade plate are formed by casting concrete through a composite roof reinforcing steel bar net, and the composite roof inner blade plate, the composite roof outer blade plate and the heat-insulating plate are connected together through tie reinforcing steel bars;
The composite roof reinforcing mesh is welded with a plurality of composite roof L-shaped connecting steel plates, the composite roof L-shaped connecting steel plates are symmetrically arranged on two sides of the assembled composite wallboard, the composite roof L-shaped connecting steel plates are welded with L-shaped connecting steel plate connecting steel bars and L-shaped connecting steel plate elbow reinforcing steel bars, one limb of the composite roof L-shaped connecting steel plates is welded on the composite roof reinforcing mesh, and the other limb of the composite roof L-shaped connecting steel plates stretches into the groove on the side face of the force transmission steel plate and is connected with the force transmission steel plates of the composite wall through self-tapping nails.
Preferably, the L-shaped connecting steel plate elbow reinforcing steel bar is an additional reinforcing steel bar embedded in the middle of the height of the flange of the concrete inner leaf plate on the L-shaped connecting steel plate of the composite roof, the diameter of the L-shaped connecting steel plate elbow reinforcing steel bar is equal to that of the steel bar net of the composite roof, two ends of the L-shaped connecting steel plate elbow reinforcing steel bar are bent to form 20MM elbows, 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 of the composite roof.
Preferably, the L-shaped connecting steel plate connecting steel bars are horizontally distributed steel bars of the composite roof steel bar net.
Preferably, the outer leaf plate of the composite roof is a reinforced concrete plate with gradient, and the inner leaf plate of the composite roof is a flat plate.
Preferably, a wood block is distributed on the inner sides of the two symmetrically arranged composite wall force transmission steel plates.
Preferably, the mortar cushion layer is arranged at the tops of the outer leaf concrete plates of the composite wall and the inner leaf concrete plates of the composite wall, the foam rubber cushion layer is arranged at the top of the heat insulation plate, and the top of the foam rubber cushion layer is connected with the heat insulation plate in the assembled outwards-protruding composite roof.
Preferably, the composite wall force-transmitting steel plate is a strip steel plate and is prefabricated at the upper part of the composite wallboard in a factory.
Preferably, the surface of the heat insulation board is provided with a dovetail groove which is connected with the dovetail grooves of the inner and outer leaf concrete wallboards in a meshed mode.
Preferably, the heat-insulating board is a polystyrene extruded board or a polystyrene foam board or a phenolic foam composite board; the upper and lower edges and the left and right edges of the heat insulation board are flush with the composite wallboard.
The method for connecting the assembled composite wallboard and the cantilever composite roof self-tapping screw assembly comprises the following steps:
The first step: preparing a composite wallboard with a force transmission steel plate in a factory; preparing a composite roof with L-shaped connecting steel plates;
And a second step of: installing a composite wallboard, smearing high-performance mortar on inner and outer leaf concrete plates at the top end of the composite wallboard, installing an outward-protruding composite floor, embedding an L-shaped connecting steel plate of the composite floor into a side groove of a force transmission steel plate of the composite wallboard, enabling the L-shaped connecting steel plate with self-tapping screw holes to be clung to the force transmission steel of the composite wallboard, and bonding mortar cushion layers on inner and outer leaf plates of the composite wallboard with inner leaf plates of the composite roof;
And a third step of: the self-tapping screw is adopted to freely pass through the L-shaped connecting steel plate of the composite roof which is also used as the force transmission steel plate and the connecting steel plate, and the self-tapping is used for connecting the force transmission steel plate of the composite wall;
fourth step: trowelling grooves on the side surfaces of the force transmission steel plates of the composite wallboards by adopting high-performance mortar;
fifth step: filling foaming glue between the polyphenyl thermal insulation boards of the joints of the composite wallboard and the composite roof;
sixth step: and painting the outer wall and the splice joint of the roof and the outer wall by adopting the outer wall painting paint, and painting the inner wall and the assembly joint by adopting the inner wall decoration paint.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
(1) The self-tapping screw assembly solves three technical problems: firstly, the problem that the inner and outer leaf concrete thin wall plates of the composite wall plate are integrally connected with the fine and dense reinforcing steel bar net of the overhanging composite roof; secondly, the steel plate is connected with the concrete thin wall plate through bolts, and the problem that the interface between the concrete thin plate and the sandwich polyphenyl plate is a connecting construction blind area exists; thirdly, the heat bridge problem exists in the through connection of the composite wallboard and the composite roof by adopting steel plate screws, and the heat bridge is suitable for the thermal performance requirement of the ultralow-energy-consumption house.
(2) The composite wallboard and the overhanging composite roof solve three technical problems: firstly, overcome traditional shear force wall and prefabricated superimposed sheet roof reinforcing bar overlap joint post-cast strip cast-in-situ volume big drawback, self-tapping screw assembly connection structure is the dry-type connection structure, has effectively reduced on-the-spot wet work load. Secondly, the thin wall plates of the inner and outer leaf concrete are fine and dense reinforcing steel bar meshes, so that the technical problems that the diameter of the distributed reinforcing steel bars of the traditional shear wall is large, the spacing between the reinforcing steel bars is large, and the wall plates and the roof are easy to crack are solved. Thirdly, the integrated assembly of the out-of-band cornice sloping roof is realized by the overhanging composite roof, and the insulation board is composited in the roof, so that the insulation performance of the building roof is improved, and the building roof is suitable for building of ultra-low energy consumption houses.
(3) The combined connection structure has the advantages of centralized force transmission by self-tapping screw assembly connection and continuous force transmission by high-performance mortar cushion layer, and solves the problem of high-efficiency stress of cooperative work of continuous force transmission by post-pouring belt and centralized force transmission by self-tapping screw assembly at the using stage. Meanwhile, the joint seam between the composite wallboard and the concrete sheet of the overhanging composite roof is compact and continuous in force transmission, and the foamed heat-insulating material is filled between the composite wallboard and the heat-insulating sheet of the overhanging composite roof, so that the problems of high-efficiency stress, rainwater leakage prevention and cold bridge prevention are solved, and the heat-insulating material is suitable for the thermal performance requirements of houses with ultra-low energy consumption.
Drawings
FIG. 1 is a cross-sectional view of a connection construction of an assembled composite wallboard and a self-tapping screw assembly of an overhanging composite roof;
FIG. 2 is a cross-sectional view of the assembled composite wall panel and the overhanging composite roof self-tapping screw assembly when not connected;
FIG. 3 is a schematic cross-sectional view of a connection structure of an assembled composite wallboard and an overhanging composite roof mortar cushion;
FIG. 4 is a schematic view of an assembled composite wallboard and a self-tapping screw assembly of an overhanging composite roof, with built-in steel structures;
FIG. 5 is a schematic view of a self-tapping screw assembly forming process;
FIG. 6 is a schematic perspective view of an assembled composite wall panel and overhanging composite roof;
In the figure: 1. assembled composite wall board; 2. assembling type cantilever composite roof; 3. composite wall outer leaf concrete slab; 4. composite wall inner leaf concrete slab; 5. composite wall reinforcing steel bar net; 6. tying the steel bars; 7. the composite wall force transmission steel plate is connected with steel bars; 8. reinforcing steel bars of force transmission steel plate elbows of composite walls; 9. a thermal insulation board; 10. a composite wall force transmission steel plate; 11. a force transmission steel plate side groove; 12. composite roof inner leaf plate; 13. composite roof outer leaf plates; 14. composite roof reinforcement mesh; 15. l-shaped connecting steel plates of the composite roof; 16. l-shaped connecting steel plate connecting steel bars; 17. l-shaped connecting steel plate elbow reinforcing steel bars; 18. self-tapping nails; 19. wood blocks; 20. a mortar cushion layer; 21. and (5) foaming the cushion rubber layer.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1-6, the assembled composite wallboard is an inner and outer She Shanpai steel bar mesh concrete sheet sandwich polyphenyl board wallboard consisting of an inner and outer leaf steel bar mesh concrete wallboard connected by tie bars and a sandwich insulation board, wherein a force transmission steel plate welded at the upper ends of the inner and outer leaf steel bar meshes of the composite wallboard on the top layer of a building is connected with an L-shaped connecting steel plate welded on the inner leaf steel bar mesh of the cantilever composite roof by self-tapping nails.
The composite roof is prefabricated in a factory, and is composed of an inner leaf reinforced concrete sheet, an outer leaf reinforced concrete sheet and a sandwich insulation board, wherein the inner leaf reinforced concrete sheet is a flat plate which is convenient for interior decoration, and the outer leaf sheet is a reinforced concrete sheet with a certain gradient which forms a sloping roof. The inner leaf concrete sheet and the outer leaf concrete sheet are connected and sealed at the end parts of the cornices so as to improve the durability of the inner heat insulation board. The composite roof inner leaf concrete slab is cut off from the wallboard concrete at the connection position of the composite wallboard, the cut-off position is filled with a heat insulation board to block a cold bridge at the connection position of the roof and the wallboard, the composite roof is embedded with L-shaped connecting steel plates which are welded on the reinforcing steel bar net and are used as force transmission steel plates and connecting steel plates at two sides of the composite wallboard, and the L-shaped connecting steel plates are connected with the force transmission steel plates at the upper end of the composite wallboard through self-tapping nails.
The self-tapping screw block is one composite wall board with force transferring steel plate, one steel net concrete sheet inside and outside the composite wall board, one steel net concrete sheet inside the composite roof with L-shaped connecting steel plate, and one built-in steel structure concrete thin wall board block with the force transferring steel plate connected with the self-tapping screw and the composite roof. Formation of self-tapping screw assembly: the method comprises the steps of arranging a welded force transmission steel plate on a middle reinforcing steel mesh of an inner and outer leaf concrete thin wall plate of a prefabricated composite wallboard, arranging a welded L-shaped connecting steel plate on a middle reinforcing steel mesh of an inner leaf concrete thin wall plate of a prefabricated composite roof, embedding the L-shaped connecting steel plate with a self-tapping screw hole on the composite roof into a side groove of the force transmission steel plate of the composite wallboard and closing the side groove, enabling a self-tapping screw to freely pass through the L-shaped connecting steel plate hole, then self-tapping the connecting force transmission steel plate, trowelling the groove embedded with the connecting steel plate by mortar, and forming the built-in steel structure concrete thin wall plate block with the thickness of the concrete thin plate with the outline of the force transmission steel plate and the connecting steel plate area.
The combined connection structure refers to a combined connection structure for connecting and concentrating force transmission by self-tapping screws and continuous force transmission by a mortar cushion layer in a blocking manner and cooperatively stressed.
The specific connection relation of each part is as follows:
assembled composite wallboard 1: the composite wall reinforcing mesh 5 and the heat preservation plate 9 are connected through tie bars 6, and the assembled composite wall plate 1 is formed after the composite wall outer leaf concrete plate 3 and the composite wall inner leaf concrete plate 4 are poured.
Assembled type cantilever composite roof 2: the composite roof reinforcing steel bar net 14 and the heat preservation plate 9 are connected through the tie reinforcing steel bars 6, and the assembled overhanging composite roof 2 is formed after the composite roof inner leaf plate 12 and the composite roof outer leaf plate 13 are poured.
Built-in steel structure of self-tapping screw assembly concrete sheet: the composite wall force transmission steel plate 10 is welded with the distributed steel bars of the inner and outer leaf steel bar meshes of the wallboard, and is welded with the connecting steel bars 7 of the composite wall force transmission steel plate and the elbow reinforcing steel bars 8 of the composite wall force transmission steel plate; the composite roof L-shaped connecting steel plate 15 which is used as a force transmission steel plate and a connecting steel plate is welded with the composite roof reinforcing steel net 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 wooden block 19 of the self-tapping force transmission steel plate is conveniently bonded with the composite wall force transmission steel plate 10 through glass cement or structural cement; the self-tapping screw is adopted to freely pass through the composite roof L-shaped connecting steel plate 15 which is used as a force transmission steel plate and a connecting steel plate, and the self-tapping screw hole is used for self-tapping and connecting the force transmission steel plate 10 of the composite wall, so that the built-in steel structure of the self-tapping screw assembly concrete thin wall plate is formed.
The self-tapping screw assembly is connected with the post-pouring strip in a combined way: the side grooves 11 of the force transmission steel plates of the concave composite wallboard are trowelled by high-performance mortar, and after the mortar cushion layer 20 and the foaming glue cushion layer 21 are cured, self-tapping screw blocks are formed and connected with the mortar cushion layer strips in a combined mode.
Assembled composite wallboard 1: the assembled sandwich heat-insulating concrete composite shear wallboard is formed by a single-row reinforced concrete sheet formed by a composite wall reinforcing mesh 5, a composite wall outer leaf concrete slab 3 and a composite wall inner leaf concrete slab 4, and is formed into a composite heat-insulating wallboard with a heat-insulating board 9 of the composite wallboard through a drawknot reinforcing steel bar 6, and a self-tapping screw assembly connection steel structure is embedded in the wallboard. The assembled composite wallboard 1 with the self-tapping screw assembly connected with the steel structure has the characteristics of light weight, good heat preservation performance, good earthquake resistance, good fire resistance and good durability, and has the remarkable advantages of quick connection and low manufacturing cost through the self-tapping screw assembly of the connecting steel plate.
Assembled type cantilever composite roof 2: the assembled sandwich heat-insulating concrete composite slope roof with cornices comprises a single-row reinforced concrete sheet formed by a composite roof reinforcing steel bar net 14, a composite roof inner blade plate 12 and a composite roof outer blade plate 13, wherein the composite roof heat-insulating plate 9 forms a composite roof through drawknot reinforcing steel bars 6, and a self-tapping screw assembly connection steel structure is embedded in the roof inner blade concrete sheet. The composite roof inner leaf concrete slab is broken at the connection position of the composite wall plate and the wall plate concrete, and the broken position is filled with the heat insulation plate so as to block a cold bridge at the connection position of the roof and the wall plate. The assembled overhanging composite roof 2 has the advantages of light weight, good heat preservation 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 sheet formed by pouring C30-C40 fine stone concrete, and the inner and outer leaf concrete sheets of the composite wallboard are tied through tie bars 6, so that the composite insulation board 9 is arranged inside.
Composite wall reinforcing mesh 5 and tie reinforcing steel 6: the single-row reinforcing mesh is formed by binding or welding horizontally-distributed reinforcing bars and vertically-distributed reinforcing bars; the tie bars 6 are connection construction bars of a single-row reinforcing mesh of the tie inner and outer leaf concrete plates.
Composite wall biography power steel sheet connecting reinforcement 7: the composite wall plate is characterized in that the composite wall plate is formed by horizontally distributing steel bars of an inner and outer leaf concrete sheet steel bar net, the horizontally distributed steel bars 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 self-tapping screw assembly force transmission.
Composite wall force transmission steel plate elbow reinforcing steel bar 8: the reinforcing steel bars are added in the middle of the height of the composite wall force transmission steel plate 10, the reinforcing steel bars 8 of the composite wall force transmission steel plate elbow are equal in diameter to the reinforcing steel bars of the reinforcing steel bar net, two ends of the reinforcing steel bars are bent to form an elbow of 20mm, and the two ends of the elbow are respectively welded with the composite wall force transmission steel plate 10.
Insulation board 9: the surface of the wall board is provided with a dovetail groove, and the concrete of the inner and outer wall boards is meshed with the dovetail groove of the heat-insulating wall board, so that the shearing resistance and the peeling resistance are enhanced; the sandwich insulation board can adopt polystyrene extruded sheet XPS, polystyrene foam plastic sheet EPS or phenolic foam composite board PUR and the like; the size of the sandwich insulation board is flush with the upper and lower edges, the left and right edges of the composite wallboard. The heat-insulating board in the composite roof is a trapezoid cross-section board with a horizontal lower surface and a certain gradient on the upper surface, the wallboard concrete at the connection position of the inner leaf concrete board of the composite roof and the composite wallboard is disconnected, and the disconnection position is filled with the heat-insulating board so as to block a cold bridge at the connection position of the roof and the wallboard.
Composite wall force transmission steel plate 10: when the vertical steel bar distribution space of the composite wall steel bar net is 100mm, the composite wall force transmission steel plate 10 is a strip 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 at the upper parts of the wallboards in factories respectively, and the side grooves 11 of the force transmission steel plates into which the L-shaped connecting steel plates 15 of the composite roof can be placed are reserved on the surface layers of the areas where the composite wall force transmission steel plates 10 are welded.
Force transfer steel plate side groove 11: after the composite roof L-shaped connecting steel plate 15 is embedded into the interior and connected by the tapping screw 18, high-performance mortar with the strength grade not lower than M15 is adopted for trowelling.
Composite inner roof leaf 12 and composite outer roof leaf 13: the composite roof is a concrete sheet formed by pouring C30-C40 fine stone concrete, the inner and outer leaf concrete sheets of the composite roof are tied through tie bars 6, and an inner composite heat insulation board 9 is arranged. The composite roof inner leaf reinforced concrete sheet is a flat plate, so that the interior decoration is facilitated, and the outer leaf sheet is a reinforced concrete sheet with a certain gradient to form a sloping roof. The inner leaf concrete sheet and the outer leaf concrete sheet are connected and sealed at the end parts of the cornices so as to improve the durability of the inner heat insulation board.
Composite roof rebar grid 14: the single-row reinforcing mesh is formed by binding or welding horizontally-distributed reinforcing bars and vertically-distributed reinforcing bars.
Composite roof L-shaped joint steel plate 15: the composite roof steel bar net 14 is welded with an L-shaped connecting steel plate which is used as a force transmission steel plate and a connecting steel plate, a self-tapping screw hole is formed at 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 steel bar net 14, the L-shaped connecting steel plate is embedded in an inner leaf plate of the composite roof after concrete is poured, and the other limb extends out of the inner leaf plate. Placing an L-shaped connecting steel plate 15 of the composite roof into a side 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 self-tapping nails 18; the L-shaped connecting steel plate 15 of the composite roof needs to be perforated at the position penetrating through the self-tapping screw, after the self-tapping screw is drilled into the force transmission steel plate, the connecting steel plate and the force transmission steel plate have friction force between the steel plates generated by the extrusion force, and meanwhile, the biting force of the steel plates and the self-tapping screw can be enhanced.
L-shaped connecting steel plate connecting steel bar 16: is the horizontally distributed steel bars of the composite roof inner and outer leaf concrete sheet steel bar net, which is welded with the L-shaped connecting steel plate 15 of the composite roof.
L-shaped connecting steel plate elbow reinforcing steel bar 17: the composite roof L-shaped connecting steel plate 15 is embedded in the reinforcing steel bars added in the middle of the height of the flange of the concrete inner leaf plate, the reinforcing steel bars 17 of the L-shaped connecting steel plate elbow are equal in diameter to the reinforcing steel bars of the reinforcing steel bars net, two ends of the elbow are bent for 20mm, and the two ends of the elbow are respectively welded with the embedded flange of the composite roof L-shaped connecting steel plate 15.
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 thread is through-long, and the distance between the self-tapping screws is generally 25-50mm.
Wood block 19: is a wood block stuck to the back of the upper composite wall force transmission steel plate 10 by using a bonding agent such as glass cement, and has the main function of facilitating the self-tapping screw to drill into the force transmission steel plate.
Mortar cushion layer 20: the high-performance mortar cushion layer with the thickness of not less than 10mm between the inner leaf plates of the assembled cantilever composite roof 2 and the assembled composite wall plate 1 is a continuous force transmission structure between the composite wall plate and the composite roof, and the waterproof and heat insulation performances of the assembly joint of the composite wall plate and the composite roof are improved.
Foaming cushion rubber layer 21: the heat insulation material is a connecting material of the composite wallboard and the composite roof heat insulation board, has the thickness of not less than 10mm, can effectively improve the heat insulation performance of the joint of the composite wallboard and the composite roof, avoids cold bridge, and is suitable for building houses with ultra-low energy consumption.
The whole construction method comprises the following steps: firstly, according to the architectural design and structural arrangement, the arrangement positions and the specific sizes of the assembled sandwich heat-insulating concrete composite shear wall boards and the overhanging composite roof are determined. And designing the thickness and reinforcement of the section of the wall body and the roof according to the load value, carrying out stress checking calculation on the wall body according to the section size and the material strength of the designed wall body, and designing a self-tapping screw block connection structure and a mortar cushion layer structure of the composite wall plate and the overhanging composite roof after the wall body and the roof are designed. Drawing a detailed structural drawing according to the design scheme of the composite wallboard, the overhanging composite roof and the assembly connection node thereof, and carrying out prefabricated composite wallboard and floor slab manufacturing, transportation and field assembly construction.
The construction process of the assembled composite wallboard and the cantilever composite roof self-tapping screw block connection structure is as follows: 1) Preparing a composite wallboard with a force transmission steel plate in a factory; preparing a composite roof with L-shaped connecting steel plates; 2) Installing a composite wallboard, smearing high-performance mortar on inner and outer leaf concrete plates at the top end of the composite wallboard, installing an outward-protruding composite floor, embedding an L-shaped connecting steel plate of the composite floor into a side groove of a force transmission steel plate of the composite wallboard, enabling the L-shaped connecting steel plate with self-tapping screw holes to be clung to the force transmission steel of the composite wallboard, and bonding mortar cushion layers on inner and outer leaf plates of the composite wallboard with inner leaf plates of the composite roof; 3) The self-tapping screw is adopted to freely pass through the L-shaped connecting steel plate of the composite roof which is also used as the force transmission steel plate and the connecting steel plate, and the self-tapping is used for connecting the force transmission steel plate of the composite wall; 4) Trowelling grooves on the side surfaces of the force transmission steel plates of the composite wallboards by adopting high-performance mortar; 5) Filling foaming glue between the polyphenyl thermal insulation boards of the joints of the composite wallboard and the composite roof; 6) And painting the outer wall and the splice joint of the roof and the outer wall by adopting the outer wall painting paint, and painting the inner wall and the assembly joint by adopting the inner wall decoration paint.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (7)
1. The self-tapping screw block connection structure of the assembled composite wallboard and the cantilever composite roof is characterized by comprising the assembled composite wallboard (1) and the assembled cantilever composite roof (2); a mortar cushion layer (20) and a foaming rubber cushion layer (21) are arranged between the assembled overhanging composite roof (2) and the top of the assembled composite wallboard (1);
The assembled composite wallboard (1) comprises a composite wall outer leaf concrete plate (3), a composite wall inner leaf concrete plate (4) and a heat insulation plate (9), wherein the heat 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 tie bars (6) are used for connecting the composite wall outer leaf concrete plate (3), the composite wall inner leaf concrete plate (4) and the heat insulation plate (9); the composite wall reinforcing steel bar net (5) is a single-row reinforcing steel bar net and is 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 steel bar net (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 connected with composite wall force transmission steel plate connecting reinforcing steel bars (7) and composite wall force transmission steel plate elbow reinforcing steel bars (8) in a welding mode, 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 outwards-protruding composite roof (2) comprises a composite roof inner blade (12), a composite roof outer blade (13) and a heat insulation plate (9), wherein the heat insulation plate (9) is arranged 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 formed by pouring concrete through a composite roof reinforcing steel bar net (14), and tie reinforcing steel bars are used for connecting the composite roof inner blade (12) and the composite roof outer blade (13) with the heat insulation plate (9);
A plurality of composite roof L-shaped connecting steel plates (15) are welded and connected on the composite roof reinforcing steel 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 the composite roof L-shaped connecting steel plates (15) is welded on the composite roof reinforcing steel mesh (14), and the other limb extends into a side groove (11) of the force transmission steel plate and is connected with the force transmission steel plate (10) of the composite wall through self-tapping nails (18);
the L-shaped connecting steel plate elbow reinforcing steel bars (17) are reinforcing steel bars which are pre-embedded in the middle part of the height of the flange of the concrete inner leaf plate on 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 steel bars of the steel bar net (14) of the composite roof, two ends of each elbow are bent to form an elbow of 20mm, and the two ends of each elbow are respectively welded with the pre-embedded flange of the L-shaped connecting steel plate (15) of the composite roof; a wood block (19) is distributed on the inner sides of the two symmetrically arranged composite wall force transmission steel plates (10); the composite roof outer blade (13) is a reinforced concrete plate with a gradient, and the composite roof inner blade (12) is a flat plate.
2. The assembled composite wallboard and cantilever composite roof self-tapping screw block connection structure according to claim 1, wherein the L-shaped connecting steel plate connecting steel bars (16) are horizontally distributed steel bars of the composite roof steel bar mesh (14).
3. The assembled composite wallboard and cantilever composite roof self-tapping screw block connection structure according to claim 1, wherein the mortar cushion layer (20) is arranged at the tops of the composite wall outer leaf concrete plate (3) and the composite wall inner leaf concrete plate (4), the foam rubber cushion layer (21) is arranged at the top of the heat insulation board (9), and the top of the foam rubber cushion layer (21) is connected with the heat insulation board in the assembled cantilever composite roof (2).
4. The assembled composite wallboard and cantilever composite roof self-tapping screw block connection structure according to claim 1, wherein the composite wall force transmission steel plate (10) is a strip steel plate, and is prefabricated at the upper part of the composite wallboard in a factory.
5. The self-tapping screw block connection structure for the assembled composite wallboard and the overhanging composite roof according to claim 1, wherein the surface of the heat insulation board (9) is provided with a dovetail groove which is connected with the dovetail grooves of the inner and outer leaf concrete wallboards in a meshed manner.
6. The assembled composite wallboard and cantilever composite roof self-tapping screw block connection structure according to claim 1, wherein the heat insulation board (9) is a polystyrene extruded sheet or a polystyrene foam sheet or a phenolic foam composite board; the heat insulation board (9) is flush with the upper and lower edges, the left and right edges of the composite wallboard.
7. The method for constructing the self-tapping screw assembly connection structure of the assembled composite wallboard and the overhanging composite roof, which is characterized by comprising the following steps:
The first step: preparing a composite wallboard with a force transmission steel plate in a factory; preparing a composite roof with L-shaped connecting steel plates;
And a second step of: installing a composite wallboard, smearing high-performance mortar on inner and outer leaf concrete plates at the top end of the composite wallboard, installing an outward-protruding composite floor, embedding an L-shaped connecting steel plate of the composite floor into a side groove of a force transmission steel plate of the composite wallboard, enabling the L-shaped connecting steel plate with self-tapping screw holes to be clung to the force transmission steel of the composite wallboard, and bonding mortar cushion layers on inner and outer leaf plates of the composite wallboard with inner leaf plates of the composite roof;
And a third step of: the self-tapping screw is adopted to freely pass through the L-shaped connecting steel plate of the composite roof which is also used as the force transmission steel plate and the connecting steel plate, and the self-tapping is used for connecting the force transmission steel plate of the composite wall;
fourth step: trowelling grooves on the side surfaces of the force transmission steel plates of the composite wallboards by adopting high-performance mortar;
fifth step: filling foaming glue between the polyphenyl thermal insulation boards of the joints of the composite wallboard and the composite roof;
sixth step: and painting the outer wall and the splice joint of the roof and the outer wall by adopting the outer wall painting paint, and painting the inner wall and the assembly joint by adopting the inner wall decoration paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210273916.9A CN114687600B (en) | 2022-03-19 | 2022-03-19 | A self-tapping screw block connection structure and method for assembled composite wall panels and cantilevered composite roofs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210273916.9A CN114687600B (en) | 2022-03-19 | 2022-03-19 | A self-tapping screw block connection structure and method for assembled composite wall panels and cantilevered composite roofs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114687600A CN114687600A (en) | 2022-07-01 |
| CN114687600B true CN114687600B (en) | 2024-07-09 |
Family
ID=82139949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210273916.9A Expired - Fee Related CN114687600B (en) | 2022-03-19 | 2022-03-19 | A self-tapping screw block connection structure and method for assembled composite wall panels and cantilevered composite roofs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114687600B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115928909B (en) * | 2022-12-27 | 2024-06-18 | 北京工业大学 | Short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof |
| CN116290479B (en) * | 2022-12-27 | 2025-12-02 | 北京工业大学 | Steel frame prefabricated light steel composite truss supporting steel wire mesh mortar-perlite-polystyrene composite enclosure wall and its construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100830241B1 (en) * | 2007-07-02 | 2008-05-16 | 한국건설기술연구원 | Composite method of upper and lower light weight composite wall and concrete floor slab of lightweight composite structural system using adapter |
| CN216973840U (en) * | 2022-03-19 | 2022-07-15 | 北京工业大学 | Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147652C (en) * | 2002-03-06 | 2004-04-28 | 赵仲星 | Technology for building house with slab-type structure |
| CN104947788B (en) * | 2015-06-18 | 2019-03-15 | 江苏保力自动化科技有限公司 | A kind of modular assembly formula building systems and its method of construction |
| CN105804240A (en) * | 2016-05-10 | 2016-07-27 | 北京大工简筑科技有限公司 | Light steel assembly type composite wall board, light steel framework, manufacturing method and installing method thereof |
| CN106836526A (en) * | 2016-12-23 | 2017-06-13 | 大元建业集团股份有限公司 | Prefabricated reinforced concrete composite thermal-insulation external wall panel and its making and installation method |
| CN108487508A (en) * | 2018-04-18 | 2018-09-04 | 深圳金鑫绿建股份有限公司 | A kind of construction method of two-way tongue and groove autoclave at high temperature lightweight concrete slab |
| CN112523421A (en) * | 2020-12-18 | 2021-03-19 | 华南理工大学 | Composite external wall panel for hiding steel frame beam column |
| CN214195653U (en) * | 2020-12-18 | 2021-09-14 | 西安建筑科技大学 | Supporting structure for reinforcing existing adobe wall-wood roof house by using profile steel |
-
2022
- 2022-03-19 CN CN202210273916.9A patent/CN114687600B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100830241B1 (en) * | 2007-07-02 | 2008-05-16 | 한국건설기술연구원 | Composite method of upper and lower light weight composite wall and concrete floor slab of lightweight composite structural system using adapter |
| CN216973840U (en) * | 2022-03-19 | 2022-07-15 | 北京工业大学 | Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114687600A (en) | 2022-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2007134517A1 (en) | Composite concrete shear wall for heat insulation | |
| CN205046685U (en) | External heated board of prefabricated masonry wall | |
| CN110670748A (en) | Steel wire frame thermal insulation prefabricated board, prefabricated laminated floor slab and preparation method thereof | |
| CN114687459B (en) | Assembled composite wallboard and floor self-tapping screw assembly and post-pouring belt assembly connection structure and construction method | |
| CN114592741B (en) | Assembled L-shaped composite wallboard self-tapping screw assembly and post-pouring strip combined connection structure and manufacturing method | |
| CN114687600B (en) | A self-tapping screw block connection structure and method for assembled composite wall panels and cantilevered composite roofs | |
| CN217602256U (en) | Assembly type L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure | |
| CN115234071B (en) | Assembled type one-shaped composite wallboard self-tapping screw assembly and post-pouring strip combined connection structure and manufacturing method | |
| CN112177194A (en) | Prefabricated building 3D reinforcing bar net rack sandwich composite light wall board | |
| CN216973840U (en) | Assembly type composite wallboard and exterior cantilever composite roof self-tapping nail cluster connecting structure | |
| CN217480420U (en) | Assembly type composite wallboard and floor slab self-tapping nail cluster and post-cast strip combined connection structure | |
| CN218438553U (en) | Assembly type composite wallboard and exterior cantilever-free composite roof self-tapping nail cluster connecting structure | |
| CN217517860U (en) | Assembly type composite wall board and convex foundation beam self-tapping nail cluster block connecting structure | |
| CN218933507U (en) | Assembled light steel wire mesh frame mortar-perlite-polyphenyl shear wall with window holes | |
| CN115928909B (en) | Short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof | |
| CN218117399U (en) | Assembled L-shaped composite wallboard through-length force-transmitting steel plate self-tapping nail cluster connection structure | |
| CN218437756U (en) | Assembly type linear composite wallboard self-tapping nail cluster and post-cast strip combined connection structure | |
| CN219386745U (en) | Short limb assembled light steel combined steel wire net frame mortar-perlite-polyphenyl enclosure wall | |
| CN217480603U (en) | Assembly type composite wallboard L-shaped column and ecological inner wall self-tapping nail cluster connecting structure | |
| CN114753694B (en) | Method for connecting assembled composite wallboard and cantilever-free composite roof self-tapping screw assembly | |
| CN217518337U (en) | Assembly type composite wallboard T-shaped column and ecological inner wall self-tapping nail cluster connecting structure | |
| CN211143352U (en) | Steel wire framework heat-insulating prefabricated slab and assembled composite floor slab | |
| CN114592746B (en) | Assembled L-shaped composite wallboard through-length force transmission steel plate self-tapping screw block connection structure and manufacturing method | |
| CN115234070B (en) | A prefabricated composite wall panel full-length force-transmitting steel plate self-tapping screw block connection structure and method | |
| CN217602257U (en) | Assembly type linear composite wallboard full-length force transmission steel plate self-tapping nail cluster block connecting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20240709 |