CN114687459A - Assembly type composite wallboard and floor slab self-tapping nail cluster and post-cast strip combined connecting structure and manufacturing method - Google Patents
Assembly type composite wallboard and floor slab self-tapping nail cluster and post-cast strip combined connecting structure and manufacturing method Download PDFInfo
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- CN114687459A CN114687459A CN202210273912.0A CN202210273912A CN114687459A CN 114687459 A CN114687459 A CN 114687459A CN 202210273912 A CN202210273912 A CN 202210273912A CN 114687459 A CN114687459 A CN 114687459A
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- 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
- E04B1/38—Connections for building structures in general
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- 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
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- 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
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Abstract
本发明公开了装配式复合墙板与楼板自攻钉集块与后浇带组合连接构造及作法，用于多层建筑承受地震作用较大的上、下复合墙板以及楼板的装配。自攻钉集块包括上下复合墙外叶混凝土薄板连接的一形自攻钉集块、下内叶混凝土薄板倒L形圈梁与上内叶混凝土薄板及楼板连接的T形自攻钉集块及与楼板连接的倒L形自攻钉集块，自攻钉集块钢构由焊接在钢筋上的传力钢板、连接钢板、自攻钉构成；后浇条带包括上下外叶混凝土板间后浇条带及内叶混凝土板与楼板间的后浇条带；自攻钉集块连接解决了混凝土薄板与夹芯聚苯板界面为连接施工盲区及通透螺杆连接热桥的难题。本发明具有后浇带连续传力与自攻钉集块集中传力协同工作高效受力、墙体热工性能好的技术优势。
The invention discloses a combined connection structure and method of prefabricated composite wall panels and floor self-tapping screw aggregate blocks and post-casting belts, which are used for the assembly of upper and lower composite wall panels and floor slabs in multi-storey buildings that are subjected to relatively large earthquakes. The self-tapping screw block includes a one-shaped self-tapping screw block connecting the outer leaf concrete sheets of the upper and lower composite walls, and a T-shaped self-tapping screw block connecting the lower inner leaf concrete sheet with the inverted L-shaped ring beam and the upper inner leaf concrete sheet and floor slab. And the inverted L-shaped self-tapping screw block connected to the floor, the self-tapping screw block steel structure is composed of force transmission steel plates, connecting steel plates and self-tapping screws welded on the steel bars; the post-casting strip includes the upper and lower outer leaf concrete slabs. The post-cast strip and the post-cast strip between the inner leaf concrete slab and the floor slab; the self-tapping screw block connection solves the problem that the interface between the concrete sheet and the sandwich polystyrene board is the connection construction blind area and the through-screw connection thermal bridge. The invention has the technical advantages of the continuous force transmission of the post-casting belt and the concentrated force transmission of the self-tapping screw block to work together efficiently to bear the force and to have good thermal performance of the wall.
Description
Technical Field
The invention relates to a combined connecting structure of a self-tapping nail cluster block and a post-cast strip of an assembled composite wallboard and a floor slab and a manufacturing method thereof, belonging to the technical field of assembled concrete buildings.
Background
The research and development of the technology of the ultra-low energy consumption house always pay attention to the engineering world 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 is as follows:
the connection problem of the upper and lower composite walls is as follows: (1) the traditional shear wall reinforcement structure has large distribution space and large diameter of reinforcing steel bars, and if the reinforcing steel bar lapping anchoring technology is adopted, the height of the section of a post-cast strip is large, the cast-in-place quantity is large, so that the requirement that the height of the section of post-cast concrete required by the assembly of an inner leaf single-row reinforcing mesh concrete sheet sandwich polystyrene board wallboard is not more than 180mm is difficult to meet; (2) the traditional technology of sleeve connecting steel bars of the shear wall is not suitable for assembling the single-row reinforcing mesh concrete thin plate sandwich polystyrene board wallboard with the inner and outer blades, and the thickness of the thin wallboard with the inner and outer blades is only 40-60 mm; (3) the traditional steel plate bolt connection technology of the shear wall is not suitable for assembling the inner leaf and outer leaf single-row reinforced mesh concrete thin plate sandwich polystyrene board wall boards, because the polystyrene board is clamped between the inner leaf wall board and the outer leaf wall board and the polystyrene board does not allow punching and bolt penetration in consideration of the heat bridge problem, the inner leaf and outer leaf concrete thin wall boards are difficult to assemble respectively by adopting the traditional steel plate bolt connection technology; (4) the price of the self-tapping screw is much lower than that of a bolt, the thin-wall light steel keels of the thin-wall light steel keel structure are connected by the self-tapping screw, the self-tapping screw penetrates through the two connected light steel keels in sequence, 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 reinforced mesh concrete sheet sandwich polystyrene board wallboard belongs to the assembly of reinforced concrete wallboards, and simultaneously requires friction force and snap-in force, so that the technology of directly connecting the light steel keel by the tapping screw at present is obviously different from the assembly of the inner and outer leaf concrete thin wallboards of the composite wallboard and the force transmission requirement of the inner and outer leaf concrete thin wallboards; (5) in the traditional assembly of the shear wall cast-in-place belt, because the cast-in-place amount of concrete is large and the mold expansion force of the concrete is large, a temporary construction support needs to be additionally arranged to position a template, the cost is high, the flexibility is poor, and the assembly is not suitable for the construction of the concrete post-cast belt of the inner and outer leaf single-row reinforcing mesh concrete thin plate sandwich polystyrene board wallboard.
The connection problem of composite wall and floor: (1) the inner leaf single-row reinforcing mesh concrete thin plate of the traditional assembled sandwich polystyrene board composite wallboard has too small size for the lap joint of an assembled floor slab, and the inner leaf single-row reinforcing mesh concrete thin plate has the problem of thin plate stability when transmitting the floor slab load; (2) the traditional fabricated concrete shear wall structure mostly adopts a steel bar truss floor bearing plate with a post-cast layer, and the cast-in-place amount is relatively large; (3) because the thickness of the inner leaf of the composite wallboard is only 40 mm-60 mm, the structural mode of connecting the wallboard embedded shear bolt and the floor slab is not applicable; (4) in order to ensure the connection performance of the floor slab and the inner leaf of the composite wallboard at the lap joint part of the support, the construction method of the composite wallboard inner and outer leaf concrete thin plate communication ring beam is mostly adopted, so that the heat bridge problem is seriously existed, and the composite wallboard inner leaf and outer leaf concrete thin plate communication ring beam is not suitable for low-energy-consumption houses.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined connecting structure and a method for a self-tapping nail cluster and a post-cast strip of an assembled composite wallboard and a floor slab, which have the advantages of high construction speed and less wet operation amount.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a built-in steel structure of a fabricated composite wallboard and floor self-tapping nail cluster and a post-cast strip combination comprises an upper composite wallboard, a lower composite wallboard, a concrete floor, an inverted L-shaped ring beam, a built-in steel structure of an upper and lower composite wallboard outer leaf concrete sheet self-tapping nail cluster, a built-in steel structure of a T-shaped self-tapping nail cluster formed by connecting a lower inner leaf concrete sheet inverted L-shaped ring beam, an upper inner leaf concrete sheet and a floor, and a built-in steel structure formed by connecting a lower inner leaf concrete sheet and a floor self-tapping nail cluster;
the upper composite wallboard and the lower composite wallboard respectively comprise a concrete outer leaf plate, a concrete inner leaf plate and a sandwich insulation plate, the concrete is poured into the inner leaf reinforcing mesh to form the concrete inner leaf plate, the concrete is poured into the outer leaf reinforcing mesh to form the concrete outer leaf plate, and the inner leaf reinforcing mesh, the outer leaf reinforcing mesh and the sandwich insulation plate are connected together through welding or binding of tie bars; the concrete floor is made by pouring concrete through a floor reinforcing mesh;
an inverted L-shaped ring beam is arranged at the joint of the upper composite wallboard and the lower composite wallboard, a reinforcing mesh of the inverted L-shaped ring beam consists of a ring beam reinforcing cage with a rectangular cross section, vertical reinforcing steel bars of an inner leaf reinforcing mesh 7 protruding from the upper part of the rectangular ring beam and an inner leaf reinforcing mesh at the lower part of the rectangular ring beam, and the inverted L-shaped ring beam consists of a rectangular concrete ring beam and an inner leaf concrete slab below the rectangular ring beam;
the built-in steel structure of the self-tapping screw assembly block of the upper and lower composite wallboard outer leaf concrete sheets comprises an outer leaf upper force transmission plate and an outer leaf lower force transmission plate, the outer leaf upper force transmission plate and the outer leaf lower force transmission plate are respectively welded with an upper and lower outer leaf reinforcing steel bar mesh, a wood block self-tapping by the self-tapping screw is conveniently bonded with the back surfaces of the outer leaf upper force transmission plate and the outer leaf lower force transmission plate, and the outer leaf upper force transmission plate and the outer leaf lower force transmission plate are connected through an outer leaf connecting steel plate by the self-tapping screw;
the T-shaped self-tapping nail set block built-in steel structure connected with the lower inner leaf concrete thin plate inverted L-shaped ring beam, the upper inner leaf concrete thin plate and the floor slab comprises a T-shaped steel plate, a T-shaped force transmission steel plate with self-tapping nail holes and serving as a force transmission steel plate and a connecting steel plate is welded on a longitudinal rib on the outer side of the lower inner leaf concrete thin plate inverted L-shaped ring beam, the upper flange of the T-shaped force transmission steel plate is connected with the inner leaf force transmission steel plate on the upper inner leaf concrete thin plate through a self-tapping nail, and the horizontal web plate of the T-shaped force transmission steel plate is connected with the floor slab force transmission steel plate through a self-tapping nail;
the built-in steel structure connected with the self-tapping nail cluster block between the lower inner leaf concrete thin wall plate and the floor slab comprises an inverted L-shaped force transmission steel plate, wherein the inverted L-shaped force transmission steel plate is welded on the longitudinal rib at the inner side of a rectangular ring beam steel reinforcement cage of an inverted L-shaped ring beam, and the inverted L-shaped force transmission steel plate is connected with the one-shaped floor slab force transmission steel plate through the self-tapping nail;
preferably, the inner leaf reinforcing mesh and the outer leaf reinforcing mesh are single-row reinforcing meshes and are formed by binding or welding horizontal distribution reinforcing steel bars and vertical distribution reinforcing steel bars; the concrete outer blade plate and the concrete inner blade plate are both cast by coarse aggregate and fine stone concrete with the particle size of 5-10 mm.
Preferably, the outer leaf upper force transmission plate and the outer leaf lower force transmission plate are respectively welded at the joint of the outer leaf reinforcing mesh of the upper composite wallboard and the outer leaf lower composite wallboard, the outer leaf connecting steel plate is embedded into the groove of the outer leaf connecting plate of the wallboard, and then the outer leaf connecting steel plate is connected with the outer leaf upper force transmission plate and the outer leaf lower force transmission plate through self-tapping screws.
Preferably, the vertically distributed reinforcing bars of the inner leaf mesh reinforcement pass through the ring beam reinforcement cage upwards by a height equal to the height of the post-cast concrete strip.
Preferably, the vertical steel sheet of the power steel sheet is passed to the shape of falling L with the welding of muscle is indulged in the ring beam steel reinforcement cage outside, the horizontal steel sheet of the power steel sheet is passed to the shape of falling L and floor for the reinforcing bar net welded floor pass the power steel sheet with self-tapping screw connection.
Preferably, after the upper and lower composite wallboards are assembled, the post-cast strip of the outer leaf of the wallboard and the post-cast strip of the upper and lower inner leaf concrete sheets and the floor slab are connected on the inverted L-shaped ring beam are reserved in the lap joint area of the reinforcing meshes of the upper and lower outer leaf concrete boards.
Preferably, the heat insulation board is made of a polystyrene extruded board, a polystyrene foam plastic board or a phenolic foam composite board.
The utility model provides a method for constructing assembled composite wall panel and floor slab self-tapping nail cluster and post-cast strip built-up connection, includes the following steps:
the first step is as follows: prefabricating a composite wallboard with an upper inner leaf and an outer leaf provided with a linear force transmission steel plate, prefabricating a composite wallboard with a lower outer leaf provided with a linear force transmission steel plate, an inner leaf provided with an inverted L-shaped ring beam, a T-shaped connecting steel plate and an inverted L-shaped connecting steel plate, and prefabricating a reinforced concrete floor;
the second step is that: lapping the reinforcing steel bars at the end part of the reinforcing steel bar floor on the inverted L-shaped ring beam of the composite wallboard and arranging cement cushion blocks with the thickness not less than 10mm, wherein the cement cushion blocks are used for forming a protective layer of the floor anchoring reinforcing steel bars; connecting the horizontal flange of the T-shaped connecting steel plate and the horizontal steel plate of the inverted L-shaped connecting steel plate with a floor slab force transmission steel plate respectively by using self-tapping screws;
the third step: installing an upper composite wallboard, coating glass cement on the position of a buttress at the end part of the upper composite wallboard on the contact surface of the upper composite wallboard and the lower composite wallboard, then placing the upper composite wallboard on the lower composite wallboard, adopting a self-tapping screw to freely penetrate through a hole on a straight connecting steel plate and then to be in self-tapping connection with a connecting steel plate of an outer leaf concrete plate of the upper composite wallboard and the lower composite wallboard, and adopting a self-tapping screw to freely penetrate through a hole on an upper flange of a T-shaped connecting steel plate and then to be connected with a connecting steel plate of an inner leaf concrete plate of the upper composite wallboard;
the fourth step: troweling the groove at the position of the connecting steel plate of the self-tapping screw of the composite wallboard by using high-performance mortar;
the fifth step: pouring post-pouring strips of the outer leaf concrete plates of the upper and lower composite wallboards and post-pouring strips for connecting the inner leaf concrete plates and the floor concrete by using fine stone concrete;
and a sixth step: painting waterproof paint.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
(1) the self-tapping nail cluster block of the upper and lower composite wallboards solves the following technical problems: 1) the problem of thin and dense reinforcing mesh integrated connection of the inner and outer leaf concrete thin wall boards of the composite wall board; 2) the problem that temporary buttresses with post-cast strip heights are required to be left in the process of assembling the upper and lower composite wallboards; 3) 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; 4) the composite wallboard adopts the thermal bridge problem existing in the through connection of steel plate screws, and is suitable for the requirement of the thermal performance of the ultra-low energy consumption house.
(2) The self-tapping nail cluster block for the wallboard and the floor solves the following technical problems: 1) the inner leaf of the prefabricated lower composite wallboard is provided with the inverted L-shaped ring beam, and the technical problems of the requirement of the lap joint length of the floor anchoring steel bar and the reinforcement of the peripheral restraint of the floor are solved. 2) A polystyrene board is arranged between the inverted L-shaped ring beam and the outer leaf concrete board for isolation, and the defect that a thermal bridge exists seriously in the whole ring beam is overcome. 3) And the integral prefabricated floor slab is adopted, so that the wet operation amount is greatly reduced, and the assembly efficiency is improved. 4) The sandwich insulation board of the upper and lower composite wallboards at the post-cast strip is continuous, and the post-cast strip is cast by fine aggregate concrete, so that the problems of heat bridge, water leakage and the like are avoided.
(3) The combined connection structure has the advantages of self-tapping nail cluster block connection and post-pouring strip connection combination, not only solves the problem that a temporary buttress with the height of the post-pouring strip needs to be left in the assembly process of the upper and lower composite wallboards in the construction stage, but also solves the problem that the post-pouring strip continuously transfers force and the self-tapping nail cluster block is concentrated to transfer force and work to efficiently bear force in a cooperative mode in the use stage.
Drawings
FIG. 1 is a schematic plan view of a building;
FIG. 2 is a sectional view of a wall panel-floor connection node at a self-tapping nail cluster pier;
FIG. 3 is a cross-sectional view of a post-cast strip of a wallboard-floor joint;
FIG. 4 is a schematic perspective view of a self-tapping nail cluster block connection structure of an assembled composite wall panel and a floor slab;
FIG. 5 is a perspective view of the assembled composite wall panel and post-cast strip combination connection structure;
FIG. 6 is a schematic perspective view of a steel structure built in a self-tapping nail cluster block of a matched composite wallboard and a floor slab;
FIG. 7 is a perspective view of the built-in steel structure of the assembled composite wall panel and post-cast strip combined connection structure;
in the figure: 1. mounting a composite wallboard; 2. a lower composite wallboard; 3. concrete outer leaf plates; 4. a concrete inner leaf plate; 5. a thermal insulation board; 6. an outer leaf reinforcement mesh; 7. inner leaf reinforcing mesh; 8. tying the reinforcing steel bars; 9. the outer blade is provided with a force transmission plate; 10. an outer leaf lower force transmission plate; 11. the outer leaf is connected with a steel plate; 12. self-tapping screw; 13. wood blocks; 14. an inverted L-shaped ring beam reinforcement cage; 15. an inverted L-shaped ring beam; 16. a T-shaped force transmission steel plate; 17. an inner leaf force transmission steel plate; 18. welding seams between the inner leaf force transmission steel plates and the inner leaf steel bar meshes; 19. floor slab force transmission steel plate; 20. floor slab reinforcing mesh; 21. a concrete floor slab; 22. the wallboard outer leaf connecting plate groove; 23. a wallboard inner leaf groove; 24. a floor slab connecting plate groove; 25. an inverted L-shaped force transmission steel plate; 26. post-pouring strips on the outer leaves of the wallboard; 27. the upper part of the inverted L-shaped ring beam is connected with the upper and lower inner leaf concrete thin plates and the post-cast strip of the floor slab.
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. 1-7, the self-tapping screw set block comprises a straight self-tapping screw set block structure formed by connecting upper and lower composite wall outer leaf concrete sheets, a T-shaped self-tapping screw set block structure formed by connecting a lower inner leaf concrete sheet inverted L-shaped ring beam with an upper inner leaf concrete sheet and a floor slab, and an inverted L-shaped self-tapping screw set block structure formed by connecting a lower inner leaf concrete sheet inverted L-shaped ring beam with a floor slab.
(1) The one-shaped self-tapping nail cluster structure for connecting the outer leaf concrete sheets of the upper and lower composite walls comprises: the steel-concrete composite thin wallboard block is an inner steel structure concrete thin wallboard block which is provided with self-tapping screws and is connected with the self-tapping screws through connecting steel plates, is thick in the outline concrete thin plate area of the upper force transmission steel plate area and the lower force transmission steel plate area, and is a steel-concrete composite thin wallboard block. The formation of the straight self-tapping nail cluster structure for connecting the upper and lower composite wall outer leaf concrete sheets: the middle reinforcing steel meshes of the outer leaf concrete thin wallboards of the prefabricated upper and lower composite wallboards are provided with welded upper and lower force transmission steel plates, connecting steel plates with self-tapping screw holes are embedded into the grooves and tightly attached to the upper and lower force transmission steel plates, the self-tapping screws freely penetrate through the holes of the connecting steel plates and then are connected with the upper and lower force transmission steel plates in a self-tapping mode, the grooves embedded into the connecting steel plates are leveled by mortar, and an inner hidden steel structure concrete thin wallboard block with the thickness of the outline concrete thin plates of the upper and lower force transmission steel plate areas is formed.
(2) The T-shaped self-tapping nail cluster structure that the lower inner leaf concrete sheet inverted L-shaped ring beam is connected with the upper inner leaf concrete sheet and the floor slab: the built-in steel-structure concrete T-shaped block is a steel-concrete combined block, wherein the built-in steel-structure concrete T-shaped block is formed by welding a lower inner leaf concrete thin plate inverted L-shaped ring beam longitudinal bar with a force transmission steel plate and a T-shaped steel plate with self-tapping screw holes, wherein the T-shaped steel plate is used as a connecting steel plate, an upper flange of the T-shaped steel plate is connected with a self-tapping screw of a linear force transmission steel plate on an upper inner leaf concrete thin plate, and a horizontal web of the T-shaped steel plate is connected with a self-tapping screw of a linear force transmission steel plate of a floor slab. The lower inner leaf concrete sheet inverted L-shaped ring beam and the upper inner leaf concrete sheet and the formation of the T-shaped self-tapping nail cluster structure connected with the floor slab: the prefabricated composite wall slab has inverted L-shaped ring beam in the lower inner leaf concrete sheet, T-shaped steel plate with self-tapping screw hole and also used as force transferring steel plate and connecting steel plate welded to the longitudinal ribs outside the prefabricated composite wall slab, assembled floor slab and upper composite wall slab, with the upper flange of the T-shaped steel plate connected to the self-tapping screw of the force transferring steel plate on the upper inner leaf concrete sheet, horizontal web of the T-shaped steel plate connected to the self-tapping screw of the force transferring steel plate, and the notch embedded into the T-shaped steel plate is leveled with mortar to form T-shaped block with built-in T-shaped steel structure peripheral outline of 40 mm.
(3) Lower inner leaf concrete sheet metal falls the shape of L collar tie beam and the floor is connected falls the shape of L self-tapping nail glomeration structure: the horizontal plate is connected with self-tapping nails of the force transmission steel plate of the floor slab, so as to form an internal steel structure concrete inverted L-shaped block with the peripheral outline of 40mm, which is a steel-concrete combined block. The lower inner leaf concrete sheet metal is turned over the formation of the L shape self-tapping nail glomeration structure of falling that L shape collar tie beam and floor are connected: the prefabricated composite wall slab has inverted L-shaped ring beam in the lower inner leaf concrete sheet, inverted L-shaped steel plate with self-tapping screw hole and serving as force transferring steel plate and connecting steel plate welded to the longitudinal ribs outside the prefabricated composite wall slab, assembled floor slab, horizontal slab of inverted L-shaped steel plate connected to the self-tapping screw of the force transferring steel plate, and mortar leveled to form inverted L-shaped block with embedded inverted L-shaped steel structure and peripheral outline of 40 mm.
The post-cast strip comprises a post-cast strip between an upper outer leaf concrete plate and a lower outer leaf concrete plate and a post-cast strip between an inner leaf concrete plate and a floor.
(1) The post-cast strip between the upper outer leaf concrete plate and the lower outer leaf concrete plate is a concrete thin wallboard strip formed by overlapping the steel bars reserved between the upper composite wallboard outer leaf concrete thin wallboard and the lower composite wallboard outer leaf concrete thin wallboard in a post-cast strip area and pouring fine stone concrete.
(2) The post-cast strip between the inner leaf concrete slab and the floor slab is a concrete strip formed by pouring fine stone concrete in the lapping and intersection area of the vertically distributed reinforcing steel bars of the thin wall slab, the lapping reinforcing steel bars of the floor slab and the vertically distributed reinforcing steel bars of the upper inner leaf concrete thin wall slab on the inverted L-shaped ring beam of the lower inner leaf concrete thin plate.
The combined connection structure is a combination of a linear self-tapping nail cluster structure formed by connecting upper and lower composite wall outer leaf concrete sheets, a T-shaped self-tapping nail cluster structure formed by connecting a lower inner leaf concrete sheet inverted L-shaped ring beam with an upper inner leaf concrete sheet and a floor slab, an inverted L-shaped self-tapping nail cluster structure formed by connecting a lower inner leaf concrete sheet inverted L-shaped ring beam with a floor slab, and a cooperative stress structure formed by connecting a post-cast concrete strip concrete node.
The connection relationship of the parts in the connection structure is as follows:
go up composite wall panel 1 and 2 structures of lower composite wall panel: the inner leaf reinforcing mesh 7, the outer leaf reinforcing mesh 6 and the tie bars 8 are connected in a welding or binding mode to form the reinforcing mesh of the composite wallboard, and the concrete outer leaf plate 3, the concrete inner leaf plate 4, the sandwich insulation plate 5 and the reinforcing mesh of the composite wallboard form the concrete composite wallboard together.
The lower inner leaf concrete sheet inverted L-shaped ring beam structure comprises: the reinforcement structure of the inverted L-shaped ring beam is formed by an inverted L-shaped ring beam 15, an inverted L-shaped ring beam reinforcement cage 14, vertical reinforcements of an inner leaf reinforcement mesh 7 protruding from the upper portion of the rectangular ring beam, and a reinforcement mesh with the height of 300mm of the inner leaf reinforcement mesh 7 at the lower portion of the rectangular ring beam, and the inverted L-shaped ring beam is composed of the rectangular concrete ring beam and an inner leaf concrete slab with the height of 300mm below the rectangular ring beam.
The built-in steel structure of the self-tapping nail cluster block of the outer leaf concrete sheets of the upper and lower composite wallboards: the upper blade force transmission plate 9 and the lower blade force transmission plate 10 are respectively welded with the upper and lower blade reinforcing meshes 6, a wood block 13 convenient for self tapping of the self tapping screw is bonded with the back surfaces of the upper force transmission plate and the lower force transmission plate by structural adhesives, and the upper force transmission plate 9 and the lower blade force transmission plate 10 are connected through the outer blade connecting steel plate 11 by the self tapping screw 12 to form the built-in steel structure of the self tapping screw block-integrated concrete thin wall plate.
The built-in steel structure of T shape self-tapping nail collets that lower inner leaf concrete sheet bar shape circle roof beam of falling L and last inner leaf concrete sheet bar and floor are connected: the T-shaped steel plate with self-tapping nail holes and used as a force transmission steel plate and a connecting steel plate is welded on the longitudinal ribs on the outer side of the inverted L-shaped ring beam of the lower inner leaf concrete thin plate, the upper flange of the T-shaped steel plate is connected with the self-tapping nails of the one-shaped force transmission steel plate on the upper inner leaf concrete thin plate, and the horizontal web plate of the T-shaped steel plate is connected with the self-tapping nails of the one-shaped force transmission steel plate of the floor slab, so that the built-in steel structure of the T-shaped self-tapping nail block concrete with the peripheral outline of the T-shaped connecting steel plate of 40mm is formed.
The built-in steel structure that the self-tapping nail collets between lower inner leaf concrete thin wallboard and floor are connected: the inner longitudinal ribs of the reinforcing cage 14 of the inverted L-shaped ring beam are welded with inverted L-shaped force transmission steel plates and connecting steel plates 25, the inverted L-shaped force transmission steel plates and connecting steel plates are connected with the one-shaped floor force transmission steel plates 19 self-tapping nails, and the formed inverted L-shaped self-tapping nail block concrete built-in steel structure with the outline of the inverted L-shaped connecting steel plates of 40mm is formed.
Upper composite wallboard 1 and lower composite wallboard 2: the composite wallboard is a structure, enclosure and heat preservation integrated composite wallboard formed by a single-row reinforcing mesh concrete thin plate consisting of an inner leaf reinforcing mesh 7, an outer leaf reinforcing mesh 6, a concrete inner leaf plate 4 and a concrete outer leaf plate 3, a heat preservation plate 5 is sandwiched between the thin plates and connected through tie bars 8, an inverted L-shaped ring beam 15 is arranged at the upper part of a lower inner leaf concrete plate, and the inverted L-shaped ring beam reinforcement structure comprises an inverted L-shaped ring beam reinforcement cage 14 and a single-row reinforcing mesh with the height of 300mm of the lower inner leaf concrete plate.
Concrete outer leaf 3 and concrete inner leaf 4: the concrete slabs are characterized in that single-row reinforcing mesh is arranged on two sides of an upper composite wallboard 1 and a lower composite wallboard 2, and the concrete slabs are poured by coarse aggregate and fine stone concrete with the particle size of 5-10 mm.
Sandwich insulation board 5: polystyrene extruded sheets XPS, polystyrene foam plastic sheets EPS or phenolic foam composite sheets PUR and the like can be adopted.
Inner leaf reinforcing mesh 7, outer leaf reinforcing mesh 6, tie bar 8: 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 distribution reinforcing steel bars and vertical distribution reinforcing steel bars; the tie bars 8 are the connecting construction bars of the single-row reinforcing mesh of the inner and outer leaf concrete slabs.
Outer leaf upper force transfer plate 9, outer leaf lower force transfer plate 10, outer leaf connecting steel plate 11: and the upper outer blade force transfer plate 9 and the lower outer blade force transfer plate 10 are welded at the upper and lower assembly positions of the outer blade reinforcing mesh 6, the outer blade connecting steel plate 11 is embedded into the outer blade connecting plate groove 22 of the wallboard, and the self-tapping screw 12 freely penetrates through the outer blade connecting steel plate and then is connected with the upper and lower outer blade force transfer plates.
The self-tapping screw 12 can be an ST 6.3 type hexagonal tail drill self-tapping screw, the total length of the self-tapping screw is 20mm, the through length of a thread is long, and the distance between the self-tapping screws is generally 25mm-50 mm.
The wood block 13 is adhered to the self-tapping screw on the back of the force transmission plate by using an adhesive such as glass cement and the like so as to facilitate the self-tapping screw to drill through the force transmission steel plate and penetrate into the wood block, and the thickness of the wood block is 12 mm.
inverted-L-shaped ring beam reinforcement cage 14, inverted-L-shaped ring beam 15: the steel bar is prefabricated on the upper part of the lower concrete inner leaf plate 4, and the vertically distributed steel bars of the inner leaf single-row steel bar mesh 7 upwards penetrate through a ring beam steel bar cage at the height equal to that of a post-cast concrete strip 27. The inverted-L-shaped ring beam 15 is composed of a steel reinforcement cage concrete with a rectangular cross section and an inner leaf concrete slab with the height of 300mm below the rectangular cross section.
T shape passes power steel sheet 16, inner leaf and passes power steel sheet 17, floor and passes power steel sheet 19: the T-shaped force transmission steel plate 16 is a steel plate which is welded on the longitudinal bar outside the inverted L-shaped ring beam steel reinforcement cage 14 and is used for force transmission and connection, the upper part of the flange of the T-shaped force transmission steel plate is connected with a self-tapping nail of an inner leaf force transmission steel plate 17 arranged in an upper inner leaf concrete plate, and the horizontal web plate of the T-shaped force transmission steel plate is connected with a self-tapping nail of a force transmission steel plate 19 arranged in a floor slab.
Welding seams 18 between the upper wall inner leaf force transmission steel plate and the inner leaf steel bar net: the upper wall inner leaf force transmission steel plate is a welding gap which is about 2mm and is not tightly attached when the upper wall inner leaf force transmission steel plate is welded with an inner leaf reinforcing mesh, and the T-shaped force transmission steel plate is just externally attached to the upper wall inner leaf force transmission steel plate by adjusting the cover gap.
Concrete floor reinforcing mesh 20, concrete floor 21: the concrete floor reinforcing mesh 20 is a reinforcing structure of a concrete floor 21 and is determined according to the stress requirement and the requirement of a connection structure of the composite wall plate and the inverted L-shaped ring beam.
Wallboard outer leaf connecting plate recess 22, wallboard inner leaf recess 23, floor slab connecting plate recess 24: the steel plate is respectively used for embedding a straight connecting steel plate into an upper outer leaf concrete plate and a lower outer leaf concrete plate, embedding a flange at the upper part of a T-shaped connecting steel plate into an upper inner leaf concrete plate and embedding a horizontal web of the T-shaped connecting steel plate into an end floor.
Inverted L-shaped force transmitting steel plate 25: the steel plate is used as a force transmission and connection steel plate, an inverted L-shaped vertical steel plate is welded with longitudinal bars outside an inverted L-shaped ring beam steel reinforcement cage 14, and an inverted L-shaped horizontal steel plate is connected with a floor slab force transmission steel plate 19 self-tapping nails welded on a floor slab steel reinforcement mesh 20.
The wall panel outer leaf post-cast strip 26 of the upper and lower composite wall panel outer leaf concrete slab: the concrete strip is formed by pouring fine stone concrete in the lapping area of the reinforcing meshes of the upper and lower outer leaf concrete plates left after the upper and lower composite wallboards are assembled.
The post-cast strip 27 for connecting the upper and lower inner leaf concrete sheets and the floor slab on the inverted L-shaped ring beam: the concrete strip is formed by pouring fine stone concrete in the intersection and lap joint area of vertical steel bars of steel bar meshes of upper and lower inner leaf concrete slabs on an inverted L-shaped ring beam left after the upper and lower composite wallboards are assembled and the floor steel bars.
The overall method is as follows: firstly, determining the arrangement positions and specific sizes of the assembled sandwich heat-insulating concrete composite shear wall panel and the floor slab according to the building design and the structural arrangement. The method comprises the steps of designing the thickness and the reinforcing bars of the wall body and the floor slab section according to a load value, designing the section and the reinforcing bars of an inverted L-shaped ring beam, carrying out stress checking calculation on the wall body according to the designed size of the wall body section and the material strength, and designing the wall body and the floor slab connection node structure and the connection structure of the wall board and the floor slab after the design of the wall body and the floor slab is completed. Drawing a detailed structural drawing according to the design scheme of the composite wallboard, the floor slab and the assembly connection node of the composite wallboard and the floor slab, and carrying out the manufacturing, transportation and on-site assembly construction of the prefabricated composite wallboard and the floor slab.
The construction process of the assembled composite wallboard and floor slab self-tapping nail cluster block and post-cast strip combined connection is as follows: 1) prefabricating an upper concrete thin plate sandwich polyphenyl wallboard with an upper force transmission steel plate and a lower force transmission steel plate, and a reinforced concrete floor slab with a force transmission steel plate at the end part; after the upper composite wallboard, the lower composite wallboard and the floor slab are in place according to the assembling position, the self-tapping screws freely penetrate through the holes of the connecting steel plates to self-tap and connect the force transmission steel plates on the inner leaf concrete plates and the outer leaf concrete plates of the composite wallboard and the force transmission steel plates at the end parts of the floor slab. 2) And (4) troweling the grooves on the wall plate and the end part of the floor slab by using high-performance mortar. 3) And pouring fine stone concrete into the post-pouring strips of the outer leaf plates of the upper and lower composite wallboards and the post-pouring strips of the intersection of the inner leaf plates of the upper and lower composite wallboards and the floor slab. 4) Painting waterproof paint for outer wall.
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 able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
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