CN217602256U - Assembly type L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure - Google Patents
Assembly type L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure Download PDFInfo
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- CN217602256U CN217602256U CN202220603126.8U CN202220603126U CN217602256U CN 217602256 U CN217602256 U CN 217602256U CN 202220603126 U CN202220603126 U CN 202220603126U CN 217602256 U CN217602256 U CN 217602256U
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Abstract
The utility model discloses an assembled L shape composite wall panel self-tapping nail glomeration and post-cast strip built-up connection structure belongs to assembled concrete building structure engineering technical field. The method comprises the following steps: the self-tapping nail set block comprises force transmission steel plates welded on single-row steel bar nets of inner and outer leaf concrete sheets of the linear-shaped upper and lower L-shaped composite wallboards, and an embedded steel-structure concrete thin wallboard block with the thickness of the concrete sheet at the outline of a force transmission steel plate area after the connection steel plates are connected by self-tapping nails; the post-cast strip is a reinforced concrete thin wallboard strip formed by lapping a reinforcing mesh reserved for prefabricating the L-shaped upper and lower composite wallboard concrete sheets on the post-cast strip and pouring fine stone concrete; the L-shaped constructional columns are concrete hidden columns positioned at the inner corners of the composite wall panels. The combined connecting structure is an integration of a self-tapping nail cluster, a cast-in-place strip and an L-shaped hidden column connecting structure, and has the remarkable advantages of strong earthquake-resistant bidirectional shear force, bending moment and torque capacity and high-efficiency cooperative stress.
Description
Technical Field
The utility model relates to an assembled L shape composite wall panel self-tapping nail glomeration and post-cast strip built-up connection structure belongs to assembled concrete building structure engineering technical field.
Background
The research and development of the technology of the house with ultra-low energy consumption are very concerned in accordance with the engineering boundary at home and abroad. However, the construction technology, especially the assembly type construction technology, of the low-multi-layer ultralow-energy-consumption house in villages and towns is quite lack at present.
The technical bottleneck problem is as follows: (1) The L-shaped wall body of the assembly type composite wall structure at the corner of a building is complex to assemble, corner structural columns are required to be arranged under the action of bending, shearing and twisting of the L-shaped wall body at the corner, and the technical problem caused by the requirement of the geometric shape and stress of the L-shaped composite wall panel cannot be solved by the one-piece composite wall body assembling method. (2) The traditional shear wall reinforcement structure has large distribution space and large diameter of reinforcing steel bars, and if a 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 for assembling the inner and outer leaf single-row reinforcing mesh concrete thin plate sandwich polystyrene board wall board is not more than 180mm is difficult to meet; (3) The traditional technology for connecting the steel bars by the shear wall sleeve is not suitable for assembling the single-row steel mesh concrete sheet sandwich polystyrene board wall boards with the inner leaf and the outer leaf at all, and the thickness of the inner She Baoqiang board and the outer 5363 board is only 40mm-60mm; (4) The traditional steel plate bolt connection technology of the shear wall is not suitable for assembling the single-row reinforcing mesh concrete thin plate sandwich polystyrene board wall boards with the inner leaf and the outer leaf, because the polystyrene board is clamped between the inner part 5363 and the outer part She Qiangban and the polystyrene board does not allow holes to be punched and bolts to be penetrated in consideration of the heat bridge problem, the inner leaf concrete thin wall board and the outer leaf concrete thin wall board are difficult to assemble respectively by adopting the traditional steel plate bolt connection technology; (5) The price of the self-tapping screw is much lower than that of the 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 She Shanpai steel mesh concrete sheet sandwich polystyrene board wall board belongs to the assembly of reinforced concrete wall boards, and simultaneously requires friction force and snap-in force, and it is obvious that the assembly of the inner and outer leaf concrete thin wall boards of the composite wall board and the force transmission requirements thereof cannot be met by the current technology of directly connecting the light steel keel by the tapping screw; (6) In the traditional assembly of the cast-in-place strip of the shear wall, because the cast-in-place quantity of concrete is large and the concrete expansion force 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 construction method is not suitable for the concrete post-pouring strip construction of the concrete sheet sandwich polyphenyl plate wallboard with the inner leaf and the outer leaf single-row reinforcing mesh concrete sheets
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an assembled L shape composite wall panel self-tapping nail cluster and post-cast strip built-up connection structure is provided, overcome cast-in-place volume in the conventional art big, the expense is big and the relatively poor problem of flexibility ratio.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a self-tapping screw cluster block and post-pouring strip combined connection structure of an assembled L-shaped composite wallboard comprises an L-shaped upper composite wallboard, an L-shaped lower composite wallboard, an outer leaf concrete slab, an inner leaf concrete slab, a heat insulation board, an inner leaf concrete slab reinforcing mesh, an outer leaf concrete slab reinforcing mesh, a tie bar, a connecting plate reinforcing bar, a bending reinforcing bar, an upper force transmission linear steel plate, a lower force transmission linear steel plate, an upper force transmission L-shaped steel plate, a lower force transmission L-shaped steel plate, a linear connecting steel plate, an L-shaped connecting steel plate, a self-tapping screw, a post-pouring strip, a linear groove, an L-shaped hidden column reinforcing cage, an L-shaped hidden column and a wood block;
the inner leaf concrete plate reinforcing mesh, the outer leaf concrete plate reinforcing mesh and the heat insulation plate are connected through the tie bars, and the outer leaf concrete plate and the inner leaf concrete plate of the composite wallboard are poured to form an L-shaped upper composite wallboard and an L-shaped lower composite wallboard;
the upper force transmission linear steel plate and the lower force transmission linear steel plate are welded with the inner leaf reinforcing mesh and outer leaf reinforcing mesh vertical distribution reinforcing steel bars of the composite wallboard and are welded with the connecting plate reinforcing steel bars and the bent reinforcing steel bars, so that the self-tapping screw can penetrate through the wood block of the linear force transmission steel plate to be bonded with the upper force transmission linear steel plate and the lower force transmission linear steel plate through glass cement or structural cement; the upper force transmission linear steel plate and the lower force transmission linear steel plate are connected through a linear connecting steel plate by a self-tapping screw to form a built-in steel structure of the linear self-tapping screw block concrete thin wall plate;
the upper force transmission L-shaped steel plate and the lower force transmission L-shaped steel plate are welded with a corner reinforcing mesh of the outer leaf reinforcing mesh of the wallboard, and the L-shaped steel plates are welded with the connecting plate reinforcing steel bars and the bent steel bars, so that the self-tapping screws can penetrate through the wood blocks of the L-shaped force transmission steel plates and can be bonded with the upper force transmission L-shaped steel plate and the lower force transmission L-shaped steel plate through glass cement or structural cement conveniently; the upper force transmission L-shaped steel plate and the lower force transmission L-shaped steel plate are connected with the upper force transmission L-shaped steel plate and the lower force transmission L-shaped steel plate through the L-shaped connecting steel plates by self-tapping screws, and the L-shaped connecting steel plates are connected by the self-tapping screws to form an embedded steel structure of the L-shaped self-tapping screw block concrete thin wall plate;
the post-cast strip is arranged in the middle of the post-cast concrete connecting structure of the leaf concrete thin plates in the assembled upper and lower composite walls;
the concrete thin wall plate is provided with an L-shaped groove in the surface layer of the L-shaped upper force transmission steel plate and the L-shaped lower force transmission steel plate area, wherein the L-shaped groove is used for placing an L-shaped connecting steel plate; the concrete thin wallboard is provided with a linear groove for placing a linear connecting steel plate in the surface layer of the upper force transmission steel plate and the lower force transmission steel plate area; and after the L-shaped embedded column reinforcement cage is placed in the position of the reserved L-shaped embedded column, pouring fine stone concrete to form the L-shaped embedded column.
Preferably, the heat insulation board is made of a polystyrene extruded sheet or a polystyrene foam plastic sheet or a phenolic foam composite board, the surface of the heat insulation board is provided with a dovetail groove, and the inner and outer She Hun concrete sheets are fully meshed with the heat insulation board through the dovetail groove.
Preferably, the tie bars are reinforcing bars with hooks of 135 degrees on one side, one ends of the tie bars with the hooks are tied and bound or welded with the horizontal and vertical reinforcing bar nodes of the inner leaf reinforcing mesh, and the other ends penetrate through the composite wallboard heat-insulating board and are welded with the outer leaf reinforcing mesh nodes.
Preferably, the connecting plate reinforcing steel bars are horizontally distributed steel bars of a composite wallboard inner leaf concrete sheet steel bar mesh and outer leaf concrete sheet steel bar mesh, and are welded with the linear upper force transmission flat steel plate, the linear lower force transmission flat steel plate, the L-shaped upper force transmission steel plate and the L-shaped lower force transmission steel plate.
Preferably, the diameter of the bent steel bar is equal to that of the steel mesh steel bar, and the elbows at the two ends of the bent steel bar are respectively welded on the adjacent force transmission steel plates.
Preferably, the L-shaped upper force transmission steel plate and the L-shaped lower force transmission steel plate are prefabricated at the bottom of the upper wallboard and the top of the lower wallboard in a factory respectively.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
(1) Five technical problems are solved by the self-tapping nail cluster: 1) The L-shaped double-limb wall panels at the corners of the composite wall panel have the problems of complex assembly structure and poor shearing resistance and torsion resistance of the corners of the composite shear wall structure; 2) The difficult problem of thin and dense steel bar net integrated connection of the inner leaf concrete thin plate and the outer leaf concrete thin plate of the L-shaped composite wallboard; 3) The problem that temporary buttresses with the height of post-cast strips need to be reserved in the process of assembling the upper composite wallboard and the lower composite wallboard; 4) 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 connecting construction blind area; 5) The composite wallboard adopts the thermal bridge problem that steel plate screw rod penetrating connection exists.
(2) The post-cast strip solves three technical problems: firstly, the defect that the cast-in-place quantity of the cast-in-place strip is large after the traditional shear wall steel bar is lapped is overcome, the lap joint size of the dense steel bar mesh and the thin concrete wall plate of the inner leaf and the outer leaf of the composite wall plate is small, the diameter of the high-strength steel bar adopted by the steel bar mesh steel bar is only 4mm, the lap joint anchoring length is only 120mm, the specification requirement of 30d (d is the diameter of the steel bar) can be met, the section size of the cast-in-place strip of the concrete of the inner leaf and the outer leaf of the composite wall plate is only 40mm multiplied by 120mm, and the concrete pouring quantity is small; the thickness of the traditional shear wall is generally not less than 160mm, the anchoring length of a steel bar with the diameter of 12mm can meet the standard requirement of 30d (d is the diameter of the steel bar), the cross section size of a post-cast strip is 160mm multiplied by 360mm, the post-cast strip is 6 times of the sum of the cross section areas of cast-in-place strips of the inner leaf concrete wall plate and the outer leaf concrete wall plate of the composite wall, and the concrete pouring amount is large. Secondly, the thin concrete wallboards with the inner leaves and the outer leaves are adopted to adopt the thin and dense reinforcing mesh, thereby solving the technical problems that the traditional shear wall has thick distributed reinforcing steel bar diameter, large reinforcing steel bar interval, high reinforcing steel bar sleeve connection cost and is not suitable for thin wallboard connection. Thirdly, the cast-in-place connecting seam of the upper and lower composite wallboard concrete sheets is compact and continuous in force transmission, and the problems of high-efficiency stress and rainwater leakage prevention are solved.
(3) Advantages of the L-shaped construction post: the integrity of the fabricated low-rise building is effectively improved, the bearing, shearing, bending and torsion resistance of the corners of the building is enhanced, and the earthquake collapse resistance of the structure is obviously enhanced.
(4) Advantages of the modular connection configuration: the connecting structure of the joint of the self-tapping nail cluster block and the steel-concrete combination joint at the corner part L-shaped self-tapping nail cluster block at the end part of the two wall limbs and the inner leaf concrete thin plate of the L-shaped composite wallboard close to the L-shaped hidden column is organically combined with the L-shaped hidden column and the connecting structure of the post-cast concrete strip concrete joint of the two wall limbs, so that the combined connecting structure for resisting earthquake bidirectional shearing force, torque and bending moment in a synergistic manner is formed, and the advantages of self-tapping nail cluster block connection, post-cast strip connection and structural column connection combination are achieved. In the construction stage, the problem that a temporary buttress with the height of a post-cast strip is required to be reserved in the assembly process of the upper and lower composite wallboards is solved by the self-tapping nail block steel structure; in the use stage, the advantage integration that post-cast strip passed power in succession, self-tapping nail glomeration concentrated power of biography, corner portion power of reinforceing of constructional column is passed has the obvious advantage of high-efficient atress in coordination.
Drawings
FIG. 1 is a schematic view of the overall structure;
FIG. 2 is a schematic view of an assembled L-shaped composite wall construction;
FIG. 3 is a schematic view of assembled L-shaped composite wall rebar and steel members;
FIG. 4 is a schematic view of a wall panel connection node configuration;
FIG. 5 is a schematic view of an L-shaped stud construction;
FIG. 6 is a schematic view of a one-shape self-tapping nail-lumped steel structure;
FIG. 7 is a schematic view of an L-shaped self-tapping nail and a steel block;
FIG. 8 is a schematic diagram of a wall body mid-span self-tapping nail cluster node forming process;
FIG. 9 is a schematic view of a wall corner self-tapping nail cluster node formation process;
FIG. 10 is a schematic view of an L-shaped composite shear wall panel manufacturing process;
in the figure: 1. an L-shaped upper composite wallboard; 2. an L-shaped lower composite wallboard; 3. an inner leaf concrete slab; 4. an outer leaf concrete slab; 5. a thermal insulation board; 6. the inner leaf concrete slab reinforcing mesh; 7. outer leaf concrete slab reinforcing mesh; 8. tying the reinforcing steel bars; 9. reinforcing steel bars of the connecting plate; 10. bending the reinforcing steel bar; 11. an upper force transmission linear steel plate; 12. a lower force transmission I-shaped steel plate; 13. an upper force transfer L-shaped steel plate; 14. a lower force transfer L-shaped steel plate; 15. a first connecting steel plate; 16. an L-shaped connecting steel plate; 17. self-tapping screw; 18. post-pouring strips; 19. a groove; 20. an L-shaped groove; 21. an L-shaped hidden column reinforcement cage; 22. an L-shaped hidden column; 23. and (4) wood blocks.
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. 1-10, the assembled L-shaped composite wallboard self-tapping screw block and post-cast strip combined connection structure is a spatial stress connection area formed by combining a linear self-tapping screw block, an L-shaped self-tapping screw block, a post-cast concrete strip and an L-shaped concrete embedded column, and has the functions of resisting earthquake bending moment, shearing force and torque.
The self-tapping screw assembly is a built-in steel concrete thin wall plate block which is formed by connecting self-tapping screw groups and a connecting steel plate in a shape, wherein the self-tapping screw groups are arranged at the end parts of inner and outer leaf single-row reinforcing mesh concrete thin plates of two wall limbs of an upper L-shaped composite wall plate and a lower L-shaped composite wall plate, and the positions of the inner leaf single-row reinforcing mesh concrete thin plates of a corner part, which are close to L-shaped hidden columns. Forming a self-tapping nail cluster: the middle reinforcing mesh of the upper wallboard and the lower wallboard is welded with an upper force transmission steel plate and a lower force transmission steel plate, a straight connecting steel plate with a self-tapping screw penetrating hole for connecting the upper force transmission steel plate and the lower force transmission steel plate is manufactured, a plurality of self-tapping screws penetrate through the straight connecting steel plate and then are self-tapping connected with the upper force transmission steel plate and the lower force transmission steel plate, the part of the force transmission steel plate recessed into the wallboard is leveled by adopting mortar, and a concrete thin wallboard block with hidden steel structure and the thickness of an outline concrete thin plate in an upper force transmission steel plate area and a lower force transmission steel plate area is called as a straight self-tapping screw block.
The L-shaped self-tapping nail cluster block is an L-shaped concrete thin wall plate block with built-in steel structure, which is formed by connecting a self-tapping nail group and an L-shaped connecting steel plate thereof at the corner part where two outer wall limb single-row reinforcing mesh concrete thin plates of an upper L-shaped composite wall plate and a lower L-shaped composite wall plate are crossed. Forming an L-shaped self-tapping nail cluster: the method comprises the steps of welding L-shaped upper and lower force transmission steel plates through outer leaf reinforcing meshes at corners of upper and lower composite wallboards, manufacturing L-shaped connecting steel plates with self-tapping screw penetrating holes, enabling a plurality of self-tapping screws to freely penetrate through the L-shaped connecting steel plates and then be in self-tapping connection with the L-shaped upper and lower force transmission steel plates, troweling the L-shaped force transmission steel plates into L-shaped grooves of the wallboards by mortar, and enabling L-shaped concrete thin wallboard blocks with the thickness of outline concrete sheets in L-shaped upper and lower force transmission steel plate areas and with built-in steel structures to be called L-shaped self-tapping screw blocks.
The post-cast concrete strip is a concrete thin wallboard strip formed by overlapping and pouring fine stone concrete in a post-cast flat strip area through a reinforcing mesh reserved on inner and outer leaf concrete sheets of two wall limbs of an upper L-shaped composite wallboard and a lower L-shaped composite wallboard.
The L-shaped hidden column is composed of an L-shaped reinforcement cage prefabricated in a factory and arranged at the corner of the L-shaped composite wallboard, and a reinforced concrete constructional column formed by cast-in-place fine aggregate concrete, wherein the cast-in-place L-shaped constructional column is parallel and level to the surface of an inner leaf concrete plate of the composite wallboard and is connected into a whole in a parallel and integrated mode, and the integrity of the wall body at the corner of the assembled composite wallboard structure is effectively improved.
The combined connection structure is a combined structure of two-way shearing force, torque and bending moment of cooperative earthquake resistance, which is formed by a connection structure of a steel-concrete combined joint of a straight self-tapping screw block and an L-shaped self-tapping screw block at the corner part, which are respectively arranged at the end parts of two wall limbs of an L-shaped composite wallboard and at the position of an inner leaf concrete thin plate close to an L-shaped hidden column, and a connection structure of a post-cast concrete strip joint of the L-shaped hidden column and the two wall limbs.
Two limb tip of L shape composite wall panel and be close to the built-in steel structure of each shape self-tapping nail colleting concrete thin wall panel of L shape hidden column position: the upper force transmission one-shaped steel plate 11 and the lower force transmission one-shaped steel plate 12 are welded with the inner leaf reinforcing mesh and outer leaf reinforcing mesh vertical distribution reinforcing steel bars of the composite wall board and are welded with the connecting plate reinforcing steel bars 9 and the bending reinforcing steel bars 10, and the self-tapping screw can penetrate through the wood block 23 of the one-shaped force transmission steel plate and can be bonded with the upper force transmission one-shaped steel plate and the lower force transmission one-shaped steel plate through glass cement or structural cement. The upper force transmission linear steel plate 11 and the lower force transmission linear steel plate 12 are connected through a linear connecting steel plate 15 by a self-tapping screw 17 to form the built-in steel structure of the linear self-tapping screw block concrete thin wall plate.
Built-in steel structure of compound wallboard bight L shape self-tapping nail lumped concrete thin wallboard: the upper force transmission L-shaped steel plate 13 and the lower force transmission L-shaped steel plate 14 are welded with the corner reinforcing mesh of the outer leaf reinforcing mesh of the wallboard, the L-shaped steel plates are welded with the connecting plate reinforcing steel bars 9 and the bending steel bars 10, and the self-tapping screw can penetrate through the wood blocks 23 of the L-shaped force transmission steel plates and can be bonded with the upper force transmission L-shaped steel plate and the lower force transmission L-shaped steel plate through glass cement or structural cement conveniently. The upper force transmission L-shaped steel plate 13 and the lower force transmission L-shaped steel plate 14 are connected through the L-shaped connecting steel plate 16 by the self-tapping screw 17 to form the built-in steel structure of the L-shaped self-tapping screw block-assembled concrete thin wall plate.
The first self-tapping screw cluster block, the L-shaped self-tapping screw cluster block, the post-cast strip and the L constructional column are connected in a combined mode: the groove 19 for placing the self-tapping nail cluster I-shaped connecting steel plate and the groove 20 for the L-shaped connecting steel plate of the concave wallboard are leveled by mortar, the post-cast strip 18 is poured with fine aggregate concrete and is maintained, the L-shaped hidden column steel reinforcement cage is placed, the light steel formwork is protected, and the hidden column fine aggregate concrete is poured, so that the combined connecting structure of the self-tapping nail cluster and the post-cast strip of the L-shaped composite wallboard is formed.
Outer leaf concrete plate 3 and inner leaf concrete plate 4: the prefabricated L-shaped sandwich heat-insulating concrete composite wallboard comprises an outdoor concrete slab and an indoor concrete slab. The concrete slab is cast by using 5 mm-10 mm fine stone concrete, and the strength grade of the concrete is C30-C40. The concrete inner leaf and the concrete outer leaf are connected through a tie bar 8.
And (3) heat insulation plate 5: polystyrene extruded sheets XPS, polystyrene foam plastic sheets EPS or phenolic foam composite sheets PUR and the like can be adopted. The related performance of the adopted heat insulation board can meet the national standard requirement. The surface of the heat insulation plate 5 is provided with a dovetail groove, and inner and outer blade concrete can be fully meshed with the heat insulation plate through the dovetail groove, so that the shear resistance and the stripping resistance of a connecting interface are enhanced.
Inner leaf concrete plate reinforcing mesh 6, outer leaf concrete plate reinforcing mesh 7: the reinforcing mesh is configured for the inner leaf concrete thin plate and the outer leaf concrete thin plate of the assembled L-shaped composite wallboard, the L-shaped reinforcing mesh is composed of horizontally distributed reinforcing steel bars and vertically distributed reinforcing steel bars, and the reinforcing mesh can be prepared in a binding or welding mode.
And (3) tying the steel bars by 8: it is a drawknot steel bar with a hook bent at 135 degrees on one side. One end of the tie bar 8 with a hook is tied and bound or welded with the horizontal and vertical bar joints of the inner leaf bar mesh, and the other end penetrates through the composite wallboard heat-insulation board 5 and is welded with the outer leaf bar mesh joints.
Connecting plate reinforcing bar 9: the steel bar is horizontally distributed steel bars of a steel bar net of a concrete sheet at the inner leaf and the outer leaf of a composite wallboard, and is welded with a straight upper force transmission flat steel plate 11, a straight lower force transmission flat steel plate 12, an L-shaped upper force transmission steel plate 13 and an L-shaped lower force transmission steel plate 14.
And (3) bending the steel bar 10: the steel bar is characterized in that a straight upper force transmission steel plate 11, a straight lower force transmission steel plate 12, an L-shaped upper force transmission steel plate 13 and an L-shaped lower force transmission steel plate 14 are additionally arranged at the middle part of the height, a bending steel bar 10 and a steel bar mesh steel bar have the same diameter, the two ends of the bending steel bar are bent by 20mm, and elbows at the two ends are respectively welded on the adjacent force transmission steel plates.
A first upper force transmission flat steel plate 11 and a second lower force transmission flat steel plate 12: when the vertical steel bars of the reinforcing mesh are distributed at a spacing of 100mm, the linear upper force transmission steel plate 11 and the linear lower force transmission steel plate 12 are steel plates with a length of 220mm, a width of 40mm and a thickness of not less than 3mm. The upper force transmission flat steel plate 11 and the lower force transmission flat steel plate 12 are prefabricated at the bottom of the upper wallboard and the top of the lower wallboard respectively in a factory. The concrete thin wallboard is characterized in that grooves for placing the linear connecting steel plates 15 are reserved on the surface layers of the upper force transmission steel plate 11 and the lower force transmission steel plate 12, the linear connecting steel plates 15 are placed in the reserved grooves, and self-tapping screws 17 are adopted to connect the linear connecting steel plates with the upper force transmission flat steel plate 11 and the lower force transmission flat steel plate 12 in a self-tapping mode.
The L-shaped upper force transfer steel plate 13 and the lower force transfer steel plate 14 are equal-limb L-shaped steel plates, and when the vertical steel bar distribution interval of the reinforcing mesh is 100mm, the length of each limb is 220mm, the width of each limb is 40mm, and the thickness of each limb is not less than 3mm. An L-shaped upper force transmission steel plate 13 and a lower force transmission steel plate 14 are prefabricated at the bottom of the upper wall plate and the top of the lower wall plate respectively in a factory. The concrete thin wall board is characterized in that grooves 20 into which the L-shaped connecting steel plates 16 can be placed are reserved on the surface layers of the L-shaped upper force transmission steel plates 13 and the L-shaped lower force transmission steel plates 14, the L-shaped connecting steel plates 16 are placed into the reserved grooves 20, and self-tapping screws are adopted to connect the L-shaped connecting steel plates with the upper force transmission steel plates 13 and the lower force transmission steel plates 14 in a self-tapping mode.
One-shaped connecting steel plate 15: adopting a rectangular steel plate with the length of 150mm, the width of 80mm and the thickness of not less than 3mm; the upper end of the first-shaped connecting steel plate 15 is connected with a self-tapping screw after 40mm of lap joint with the first-shaped upper force transmission steel plate 11, and the lower end of the first-shaped connecting steel plate 15 is connected with a factory welding or field self-tapping screw after 40mm of lap joint with the first-shaped force transmission steel plate 12. The position that a shape connecting steel plate 15 passed self-tapping screw needs to punch, and after the self-tapping screw drilled into biography power steel sheet, connecting steel plate and biography power steel sheet had extrusion force, the frictional force between the steel sheet and the occlusal force dual biography power advantage of steel sheet and self-tapping screw.
L-shaped connecting steel plate 16: a right-angle equal-limb L-shaped steel plate is adopted, the limb length is 150mm, the limb width is 80mm, and the thickness is not less than 3mm; the upper end of the L-shaped connecting steel plate 16 is connected with the L-shaped upper force transmission steel plate 13 by self-tapping nails after being lapped by 40mm, and the lower end of the L-shaped connecting steel plate 16 is lapped with the L-shaped lower force transmission steel plate 14 by 40mm and is connected with the self-tapping nails in a factory or on-site; the L-shaped connecting steel plate 16 needs to be punched when penetrating through the self-tapping screw, and after the self-tapping screw drills into the force transmission steel plate, the connecting steel plate and the force transmission steel plate have the advantages of extrusion force, friction force between angle steel and double force transmission of meshing force of the steel plate and the self-tapping screw.
Self-tapping screw 17: the ST 6.3 type hexagonal tail drill self-tapping screw can be selected, the total length of the self-tapping screw is 20mm, the through length of the thread is long, and the distance between the self-tapping screws is generally 25mm-50mm.
Post-cast strip 18: the strip is a strip of an assembled upper and lower composite wall body inner and outer leaf concrete thin plate post-cast concrete connecting structure, and the height of the strip is 120 mm-180 mm. The reinforcing meshes of the inner and outer leaf concrete sheets of the upper and lower composite wallboards at the position of the post-cast strip 18 are lapped at the position, and the concrete horizontal strip is formed after the fine aggregate concrete is poured.
The high-performance mortar for filling and leveling the straight groove 19 is high-strength mortar with the strength not lower than M15.
The high-performance mortar for filling the L-shaped groove 20 is high-strength mortar with the strength not lower than M15.
L-shaped structural embedded column steel bar 21: the L-shaped reinforcement cage is arranged between an inner leaf concrete plate 4 and an insulation board 5 at the inner corner of a composite wallboard, and after the self-tapping nail block steel structures of an upper composite wallboard and a lower composite wallboard are connected on site, the prefabricated reinforcement cage 21 can be arranged in the reserved L-shaped hidden column position.
Constructing the hidden column 22: the concrete constructional column is formed by placing the prefabricated reinforcement cage 21 into a reserved L-shaped hidden column position and then pouring fine stone concrete.
The wood block 23: the self-tapping screw is adhered to a wood block on the back of an upper force transmission steel plate and a lower force transmission steel plate in a straight shape and an L shape by adhesives such as glass cement, the thickness of the wood block is 10mm, and the self-tapping screw is convenient to drill into the force transmission steel plates.
The method of the connection structure is as follows: (1) Firstly, determining the arrangement of a building structure according to the building design and related planning, and determining the arrangement position and specific size of the assembled L-shaped sandwich thermal insulation concrete composite shear wall plate. And (4) carrying out stress checking calculation on the wall according to the designed wall section size and the material strength, and after the wall is designed, designing the wall connection node structure. And drawing a detailed structural drawing according to the design scheme of the L-shaped composite wallboard and the assembly connection node thereof, and carrying out manufacturing, transportation and field assembly on the prefabricated composite wallboard.
(2) The construction process of the assembled L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connecting structure is as follows: 1) Prefabricating an L-shaped upper concrete thin plate sandwich polystyrene wallboard with a linear shape and L-shaped upper and lower force transmission steel plates; 2) Coating glass cement on self-tapping nail-gathering buttress blocks of inner and outer leaf concrete thin plates of the L-shaped upper and lower composite wallboards, and placing the upper composite wallboard on the lower composite wallboard; 3) Respectively embedding the one-shaped and L-shaped connecting steel plates into corresponding grooves, and adopting self-tapping screws to freely penetrate through holes in the force transmission steel plates and then self-tapping to connect the one-shaped and L-shaped upper and lower force transmission steel plates; 4) Leveling the groove of the connecting steel plate by using high-performance mortar; 5) Pouring and maintaining the post-cast strip by using fine stone concrete; 6) Placing the L-shaped embedded column reinforcement cage into the L-shaped embedded column position of the composite wall body, pouring L-shaped embedded column fine aggregate concrete and maintaining; 7) Painting waterproof paint to decorate wall board.
Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (5)
1. The assembled L-shaped composite wallboard self-tapping screw cluster block and post-cast strip combined connection structure is characterized by comprising an L-shaped upper composite wallboard (1), an L-shaped lower composite wallboard (2), an outer leaf concrete slab (4), an inner leaf concrete slab (3), a heat insulation board (5), an inner leaf concrete slab mesh (6), an outer leaf concrete slab mesh (7), tie bars (8), connecting plate reinforcing steel bars (9), bent reinforcing steel bars (10), an upper force transmission linear steel plate (11), a lower force transmission linear steel plate (12), an upper force transmission L-shaped steel plate (13), a lower force transmission L-shaped steel plate (14), a linear connecting steel plate (15), an L-shaped connecting steel plate (16), a self-tapping screw (17), a post-cast strip (18), a linear groove (19), an L-shaped groove (20), an L-shaped hidden column reinforcement cage (21), an L-shaped hidden column (22) and a wood block (23);
the inner leaf concrete plate reinforcing mesh (6), the outer leaf concrete plate reinforcing mesh (7) and the heat insulation plate (5) are connected through the tie bars (8), and the composite wallboard outer leaf concrete plate (4) and the wallboard inner leaf concrete plate (3) are poured to form an L-shaped upper composite wallboard (1) and an L-shaped lower composite wallboard (2);
the upper force transmission linear steel plate (11) and the lower force transmission linear steel plate (12) are welded with the inner leaf reinforcing mesh vertical distribution reinforcing steel bar and the outer leaf reinforcing mesh vertical distribution reinforcing steel bar of the composite wallboard, and are welded with the connecting plate reinforcing steel bar (9) and the bent reinforcing steel bar (10), so that the self-tapping screw can penetrate through the wood block (23) of the linear force transmission steel plate to be bonded with the upper force transmission linear steel plate and the lower force transmission linear steel plate through glass cement or structural cement; the upper force transmission linear steel plate (11) and the lower force transmission linear steel plate (12) are connected through a linear connecting steel plate (15) by a self-tapping screw (17) to form a built-in steel structure of the linear self-tapping screw block concrete thin wall plate;
the upper force transmission L-shaped steel plate (13) and the lower force transmission L-shaped steel plate (14) are welded with the reinforcing meshes at the corners of the reinforcing meshes of the outer leaf reinforcing meshes of the wall board, and the L-shaped steel plates are welded with the reinforcing reinforcements (9) of the connecting plate and the bent reinforcements (10), so that the self-tapping screw can penetrate through the wood block (23) of the L-shaped force transmission steel plate to be bonded with the upper force transmission L-shaped steel plate and the lower force transmission L-shaped steel plate through glass cement or structural cement; the upper force transmission L-shaped steel plate (13) and the lower force transmission L-shaped steel plate (14) are connected with the upper force transmission L-shaped steel plate (13) and the lower force transmission L-shaped steel plate (14) through the L-shaped connecting steel plate (16) by adopting self-tapping screws (17) through the L-shaped connecting steel plate (16) to form built-in steel structure of the L-shaped self-tapping screw block concrete thin wall plate;
the post-cast strip (18) is arranged in the middle of the post-cast concrete connecting structure of the leaf concrete sheets in the assembled upper and lower composite walls;
the concrete thin wallboard is provided with an L-shaped groove (20) which is reserved on the surface layer of the upper force transmission L-shaped steel plate (13) and the lower force transmission L-shaped steel plate (14) area and into which an L-shaped connecting steel plate (16) can be placed; the concrete thin wallboard is provided with a linear groove (19) for placing a linear connecting steel plate (15) in a surface layer in the area of an upper force transmission linear steel plate (11) and a lower force transmission linear steel plate (12); the L-shaped embedded column reinforcement cage (21) is placed in the position of the reserved L-shaped embedded column (22), and then the L-shaped embedded column (22) formed by fine aggregate concrete is poured;
the heat insulation board (5) is made of a polystyrene extruded sheet or a polystyrene foam plastic sheet or a phenolic foam composite board, the surface of the heat insulation board (5) is provided with a dovetail groove, and the inner and outer She Hun concrete sheets are fully meshed with the heat insulation board (5) through the dovetail groove.
2. The assembled L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure as claimed in claim 1, wherein the tie bars (8) are steel bars with 135 ° hooks on one side, one end of the tie bars (8) with hooks is tied, bound or welded with the horizontal and vertical steel bar nodes of the inner leaf steel bar net, and the other end penetrates through the composite wallboard insulation board (5) to be welded with the outer leaf steel bar net nodes.
3. The assembled L-shaped composite wall panel self-tapping nail cluster and post-cast strip combination connection structure of claim 1, wherein the web reinforcement (9) is a horizontally distributed reinforcement of a composite wall panel inner and outer leaf concrete slab mesh reinforcement, and is welded to the upper force-transmitting L-shaped steel plate (11), the lower force-transmitting L-shaped steel plate (12), the upper force-transmitting L-shaped steel plate (13), and the lower force-transmitting L-shaped steel plate (14).
4. The assembled L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure of claim 1, wherein the diameter of the bent steel bar (10) is equal to that of the mesh steel bar, and the elbows at the two ends of the bent steel bar (10) are respectively welded on the adjacent force transmission steel plates.
5. The assembled L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure of claim 1, wherein the upper force transmission one-shaped steel plate (11) and the lower force transmission one-shaped steel plate (12) are prefabricated at the bottom of the upper wallboard and the top of the lower wallboard respectively, and the upper force transmission L-shaped steel plate (13) and the lower force transmission L-shaped steel plate (14) are prefabricated at the bottom of the upper wallboard and the top of the lower wallboard respectively in a factory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220603126.8U CN217602256U (en) | 2022-03-19 | 2022-03-19 | Assembly type L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220603126.8U CN217602256U (en) | 2022-03-19 | 2022-03-19 | Assembly type L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure |
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| CN217602256U true CN217602256U (en) | 2022-10-18 |
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| CN202220603126.8U Active CN217602256U (en) | 2022-03-19 | 2022-03-19 | Assembly type L-shaped composite wallboard self-tapping nail cluster and post-cast strip combined connection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592741A (en) * | 2022-03-19 | 2022-06-07 | 北京工业大学 | Assembly type L-shaped composite wallboard self-tapping nail cluster block and post-cast strip combined connection structure and method |
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2022
- 2022-03-19 CN CN202220603126.8U patent/CN217602256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592741A (en) * | 2022-03-19 | 2022-06-07 | 北京工业大学 | Assembly type L-shaped composite wallboard self-tapping nail cluster block and post-cast strip combined connection structure and method |
| CN114592741B (en) * | 2022-03-19 | 2024-03-22 | 北京工业大学 | Assembled L-shaped composite wallboard self-tapping screw assembly and post-pouring strip combined connection structure and manufacturing method |
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Inventor after: Dong Hongying Inventor after: Qin Yu Inventor after: Cao Wanlin Inventor after: Yang Zhaoyuan Inventor before: Cao Wanlin Inventor before: Yang Zhaoyuan Inventor before: Dong Hongying Inventor before: Qin Yu |