Novel dense rib cavity composite structure floor slab

Abstract

The utility model provides a novel dense rib cavity composite structure floor, which is used in the technical field of assembly type buildings and comprises a plurality of floor combination units, a reinforcing mesh and cast-in-place concrete, and the adjacent floor combination units are in lap joint in the length direction. The floor combination unit comprises a profiled steel sheet, a cavity component, an anti-floating connecting rod and a vertical connecting rod, and the cavity component is fixed to the profiled steel sheet through the anti-floating connecting rod. The vertical connecting rods are higher than the cavity components, the reinforcing mesh is connected to the vertical connecting rods through buckles in the horizontal direction, and the floor combination units are connected into a whole through the reinforcing mesh. The floor slab combination units are prefabricated and assembled in a factory, and the industrialization degree of floor slab construction is remarkably improved; the floor combination units are connected in a lap joint mode and reinforced through fasteners, the construction speed is high, stress is reasonable, positioning is convenient, the integrity of the floor is better, the weight is lighter, the safety and durability of a building structure are enhanced, construction is convenient and fast, labor and material cost is saved, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fabricated building, especially relates to a novel dense rib cavity combined structure floor. BACKGROUND

[0002] The dense rib cavity floor is a novel floor form, which is composed of a concrete dense rib beam and upper and lower plates, and a cavity is arranged between the upper and lower plates and the dense rib. The dense rib cavity floor can realize a large-span configuration with a small floor thickness and self weight, and can be widely applied to large-bay commercial buildings, exhibition buildings and other buildings. The dense rib cavity floor is well applied in buildings with high requirements for heat preservation and sound insulation, such as teaching buildings, conference rooms and libraries, because the cavity is arranged in the dense rib cavity floor.

[0003] The construction procedure of the cast-in-place dense rib cavity floor is complex, and a large amount of on-site manual work is required, and the industrialization degree of construction is low. China vigorously promotes building industrialization, and fabricated buildings are widely applied because of the high standardization and industrialization degree. In recent years, the prefabricated concrete cavity floor and the dense rib floor with profiled steel plate pouring concrete as a combined bottom mold have appeared. The prefabricated concrete cavity floor requires a large amount of steel bar binding work on site, and the cast-in-place concrete and the prefabricated concrete are prone to form vertical joints, which weakens the integrity of the component. The dense rib floor with profiled steel plate pouring concrete as a combined bottom mold has a heavy combined bottom mold, and also has vertical joints, cannot fully exert the advantages of steel structures and composite structures, and has a high cost. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a novel dense rib cavity combined structure floor, which greatly reduces the steel bar processing and binding work on the construction site, and improves the construction efficiency.

[0005] The utility model adopts the technical scheme: a novel dense rib cavity combined structure floor, comprising a plurality of floor combined units and a steel mesh, adjacent floor combined units are connected in the length direction by lapping; the floor combined unit is provided with a cavity component and a vertical connecting rod, the vertical connecting rod is higher than the cavity component, the steel mesh is connected to the vertical connecting rod in the horizontal direction through buckling, and a plurality of floor combined units are connected.

[0006] Further, the utility model further comprises cast-in-place concrete, the cast-in-place concrete is filled in a plurality of floor combined units, and covers the steel mesh.

[0007] Further, the floor combined unit further comprises a profiled steel plate, the cavity components are uniformly arranged along the length direction of the profiled steel plate, and the vertical connecting rod is arranged at the edge of the profiled steel plate and surrounds the cavity components.

[0008] Further, the cavity component and the profiled steel sheet are provided with an anti-floating connecting rod, and the anti-floating connecting rod is connected with the cavity component.

[0009] Further, the anti-floating connecting rod is provided with a connecting disc at the upper end, and the cavity component is provided with a clamping groove at the bottom, and the connecting disc can be inserted into the clamping groove and fixed in the clamping groove through horizontal movement.

[0010] Further, the vertical connecting rod is provided with the buckle at the top, and the buckle comprises a U-shaped groove with an opening facing upward and a limiting pin matched with the U-shaped groove, and the reinforcing steel bars of the reinforcing mesh are arranged in the U-shaped groove and clamped through the limiting pin.

[0011] Further, the long edges of the profiled steel sheet on both sides are provided with corresponding lap holes, and adjacent profiled steel sheets are connected through lap joints by means of fasteners.

[0012] Further, the short edge of the profiled steel sheet on one side is provided with a staggered table, and the staggered table is provided with a connecting hole for connecting with another profiled steel sheet.

[0013] Further, the staggered table is formed by stamping and protrudes upward by the thickness of the profiled steel sheet.

[0014] Further, the anti-floating connecting rod and / or the vertical connecting rod are arranged in the rib groove of the profiled steel sheet.

[0015] The utility model has the advantages and positive effects that:

[0016] The utility model discloses a profiled steel sheet, a vertical connecting rod and a reinforcing mesh are connected to form a whole, which replaces a reinforcing cage formed by longitudinal reinforcement and stirrup, simplifies construction steps, and the floor slab combination unit is prefabricated and assembled in a factory, which significantly improves the industrialization degree of floor slab construction, greatly reduces steel processing, binding and transportation work on the construction site, and improves construction efficiency.

[0017] The floor slab combination units are connected through lap joints and connected through fasteners, the profiled steel sheet has high rigidity, does not need to be supported by a bottom mold during construction, has high construction speed, reasonable stress, is convenient to position, has better integrity and lighter weight, enhances the safety and durability of the building structure, is convenient to construct, saves labor and material costs, and improves construction efficiency.

[0018] The cavity component is connected with the anti-floating connecting rod through the clamping groove, and the installation is quick, convenient and reliable, and the cavity component floating problem during concrete pouring is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic diagram of one specific embodiment of the utility model.

[0020] Figure 2 is a floor slab combination unit structure schematic diagram of one specific embodiment of the utility model;

[0021] Figure 3 is a floor slab combination unit explosion map of one specific embodiment of the utility model;

[0022] Figure 4 is a profiled steel sheet structure schematic diagram of one specific embodiment of the utility model;

[0023] Figure 5 is a vertical connecting rod structure schematic diagram of one specific embodiment of the utility model;

[0024] Figure 6 is the anti-floating connecting rod connection schematic diagram of one specific embodiment of the utility model;

[0025] Figure 7 is the partial enlarged view of one specific embodiment of the utility model Figure 6 .

[0026] In the drawing:

[0027] 1, profiled steel sheet 11, staggered table 12, lap joint hole

[0028] 2, cavity component 21, shell 22, clamping groove

[0029] 3, vertical connecting rod 31, rod body 32, U-shaped groove

[0030] 33, limit pin 4, anti-floating connecting rod 5, fastener

[0031] 6, steel mesh Specific embodiments

[0032] The embodiments of the utility model are described below in combination with the drawings.

[0033] As Figure 1 indicated, the utility model provides a new type of ribbed cavity combination structure floor slab, the floor slab is fabricated component, through prefabricating in factory, then transporting to construction site to assemble, reduces the on-site welding operation and steel bar binding operation, reduces the labor intensity of worker, improves construction efficiency, light in weight, and good overallity in detail.

[0034] As Figure 1 , Figure 2 and Figure 3As shown, the utility model provides a novel dense rib cavity combined structure floor slab, including a plurality of floor slab combination unit and steel mesh 6, wherein the length direction of adjacent floor slab combination unit lap joint connection;Floor slab combination unit is equipped with cavity component 2 and vertical link 3, vertical link 3 is higher than cavity component 2, steel mesh 6 is connected in vertical link 3 through buckle, and several floor slab combination unit is connected in an organic whole.

[0035] The above-mentioned floor slab combination unit is prefabricated in the factory, and after being transported to the site, several floor slab combination units are spliced and connected according to the size of the floor slab, and then the steel mesh 6 is installed on the upper part of the floor slab combination unit, that is, the construction of the basic structure of the entire dense rib cavity combined structure floor slab is completed, the installation process is simple, efficient, the overall structure is stable and connected, has good rigidity, and provides a basis for the subsequent pouring of concrete.

[0036] The above-mentioned cavity component 2 is a hollow structure, which is arranged in the floor slab combination unit according to the predetermined interval, so that the floor slab after pouring concrete forms a cavity structure;Preferably, the cavity component 2 is made of low-density inorganic material to reduce its weight and thus the overall weight of the floor slab.

[0037] The above-mentioned steel mesh 6 is arranged in the horizontal direction as a whole, including a plurality of longitudinally and transversely connected longitudinal steel bars and transverse steel bars, the steel mesh 6 connects several floor slab combination units in an organic whole, further improving the integrity of the floor slab;Preferably, the overall area of the steel mesh 6 is not less than the area of the above-mentioned several floor slab combination units spliced together, the interval of the longitudinal steel bars and the transverse steel bars is matched with the vertical link 3 on the floor slab combination unit, so that each longitudinal steel bar and each transverse steel bar is fixed by at least two vertical links 3, so that each part of the steel mesh 6 is stably fixed at a set height above the floor slab combination unit, avoiding the deviation or sinking of part of the steel bars during concrete pouring, forming a weak part of the floor slab.

[0038] Further, the novel dense rib cavity combined structure floor slab provided by the present application further comprises cast-in-place concrete, after the on-site assembly of the floor slab combination unit and the steel mesh 6 is completed, the concrete is poured, at this time, the floor slab combination unit serves as a formwork for concrete pouring, without the need for separately arranging a formwork and a formwork support system, saving a large amount of labor and materials and improving the overall construction efficiency;The cast-in-place concrete is filled in the above-mentioned several floor slab combination units and covers the steel mesh 6, finally forming an integral dense rib floor slab.

[0039] As shown in Figure 2 , Figure 3 , Figure 4 As shown, the above-mentioned floor slab combination unit further comprises a profiled steel sheet 1, the cavity components 2 are uniformly arranged along the length direction of the profiled steel sheet 1, and the vertical links 3 are arranged at the edges of the profiled steel sheet 1 and surround the cavity components 2.

[0040] Specifically, the profiled steel sheet 1 is a formed steel sheet with a preset length and width, which is formed by cold bending of a thin steel sheet through rolling, and has a wave-shaped cross section along the width direction of the sheet. The cavity member 2 is made according to the width of the profiled steel sheet 1, so that it can be arranged at the middle of the width direction of the profiled steel sheet 1 and has enough space for mounting the vertical link 3.

[0041] The vertical link 3 is evenly welded to the edge of the profiled steel sheet 1 and arranged around the cavity member 2 for at least one round. After the adjacent two floor slab assembly units are connected, at least two rows of vertical links 3 are arranged between the adjacent two rows of cavity members 2. It can be understood that the cast-in-place concrete is poured at this position and connected with the two rows of vertical links 3 to form a dense ribbed beam. Therefore, the vertical link 3 has three main functions. First, it is used to support the reinforcement mesh 6, so that the reinforcement mesh 6 can be stably fixed at a preset height on the upper part of the floor slab assembly unit. Second, it is used as vertical reinforcement of the dense ribbed beam, which can replace the stirrup to enhance the shear performance of the ribbed beam. Third, by welding the vertical link 3 to the profiled steel sheet 1, it can provide a pin function to transfer shear force and tension, avoid longitudinal shear failure of the cast-in-place concrete and the profiled steel sheet 1, and enhance the integrity of the component.

[0042] Preferably, the vertical links 3 can also be arranged between the cavity members 2 on the same floor slab assembly unit to form a dense ribbed beam and improve the integrity and rigidity of the floor slab.

[0043] As shown in Figure 5 , the top of the vertical link 3 is provided with a buckle. Preferably, the vertical link 3 is integrally formed and includes a rod body 21, a U-shaped groove 32 with an opening facing upward, and a limiting pin 33 matched with the U-shaped groove 32. The U-shaped groove 32 and the limiting pin 33 form the buckle. The reinforcement of the reinforcement mesh 6 is arranged in the U-shaped groove 32 and clamped by the limiting pin 33. Specifically, the side wall of the U-shaped groove 32 is provided with a screw hole, and the limiting pin 33 can be threadedly connected to the screw hole. After the reinforcement of the reinforcement mesh 6 is arranged in the U-shaped groove 32, the limiting pin 33 is installed in the screw hole to close the U-shaped groove 32. The operation is very simple, and the installation efficiency of the reinforcement mesh 6 is improved. It can be understood that the bottom end of the vertical link 3 is welded to the profiled steel sheet 1. When the vertical link 3 is installed, the installation position and the angle of the buckle correspond to the horizontal reinforcement and the vertical reinforcement of the reinforcement mesh 6, respectively. The U-shaped groove 32 of the vertical link 3 faces different directions, so that the horizontal reinforcement and the vertical reinforcement can be accurately arranged in the U-shaped groove 32 of the different vertical links 3.

[0044] As shown in Figure 2 , Figure 6As shown in the drawings, the cavity member 2 and the profiled steel sheet 1 are provided with anti-floating connecting rods 4, which are clamped with the cavity member 2 to fix the cavity member 2 and prevent it from floating during concrete pouring. Specifically, the anti-floating connecting rods 4 are arranged at the bottom of the cavity member 2, with the bottom end welded to the profiled steel sheet 1 and the top end clamped with the cavity member 2. In the present application, the number of anti-floating connecting rods 4 can be set as needed, preferably two or more, and arranged uniformly relative to the cavity member 2 to balance the stress of each part of the cavity member 2. At the same time, the anti-floating connecting rods 4 can also transmit the shear force and tensile force of the concrete to the profiled steel sheet 1.

[0045] Further, the upper end of the anti-floating connecting rod 4 is provided with a connecting disc, and the bottom of the cavity member 2 is provided with a clamping groove 22, and the connecting disc can extend into the clamping groove 22 and be fixed in the clamping groove 22 by horizontal movement.

[0046] Specifically, as shown in the drawings, Figure 6 , Figure 7 The anti-floating connecting rod 4 includes a rod body 31 and a connecting disc arranged at the upper end of the rod body 31, and the radius of the connecting disc is greater than that of the rod body 31. The cavity member 2 is integrally formed and includes a shell 21 and a plurality of clamping grooves 22 arranged at the bottom of the shell 21. The clamping groove 22 has a large opening and a small opening, and the large opening is matched with the connecting disc so that the connecting disc can extend into the clamping groove 22. The small opening is matched with the rod body 31, and the connecting disc will not move out of the clamping groove 22 through the small opening when it is located at the part of the clamping groove 22 corresponding to the small opening. When the plurality of anti-floating connecting rods 4 are welded to the profiled steel sheet 1, the relative positions of the anti-floating connecting rods 4 are the same as the relative positions of the clamping grooves 22 at the bottom of the cavity member 2. During installation, the cavity member 2 is first placed above the anti-floating connecting rods 4, the large opening of the clamping groove 22 is aligned with the connecting disc, the cavity member 2 is placed, and then the cavity member 2 is moved towards the small opening so that the connecting disc moves to the part of the clamping groove 22 corresponding to the small opening. Preferably, the depth of the clamping groove 22 corresponds to the thickness of the connecting disc, and the width of the clamping groove 22 corresponds to the diameter of the connecting disc, so that the connecting disc can be stably fixed in the clamping groove 22 and is not easy to move during the concrete pouring process.

[0047] Further, as shown in the drawings, Figure 3 The profiled steel sheet 1 in the present application includes two opposite long sides and two opposite short sides, and the long sides on both sides are provided with corresponding lap holes 12. Adjacent profiled steel sheets 1 are connected by fasteners 5 passing through the lap holes 12. In a specific embodiment, the edges of the profiled steel sheet 1 on both sides in the length direction are horizontally arranged as wave-shaped sections protruding upward, and the length direction of the horizontal plate is provided with a plurality of lap holes 12. During connection, the horizontal plates of two profiled steel sheets 1 are aligned in the length direction and then lapped, and the two profiled steel sheets 1 are fixed and connected by the fasteners 5 passing through the lap holes 12, so as to realize stable connection between the floor assembly units.

[0048] AsFigure 3 As shown, the short side of the profiled steel sheet 1 is provided with a staggered platform 11, and the staggered platform 11 is provided with a connecting hole for connecting with another profiled steel sheet 1.

[0049] Specifically, the short side of the profiled steel sheet 1 refers to one of the two ends in the width direction of the profiled steel sheet 1. Preferably, the length of the profiled steel sheet 1 in the present application is consistent with the span of the floor slab, so that the two ends in the width direction are respectively arranged on the building bearing structure, generally on the beam. By arranging the staggered platform 11 on the short side of the profiled steel sheet 1, the two profiled steel sheets 1 can be more closely and stably connected together, improving the integrity and stability of the structure, avoiding the loosening or misalignment problems that may exist in the traditional connection mode of the profiled steel sheet 1, and being conducive to the connection of the floor slab between adjacent spans to form a whole. Preferably, the corresponding position of the other short side of the profiled steel sheet 1 is provided with the same connecting hole. Through factory standardized production, the short side of one profiled steel sheet 1 provided with the connecting hole is overlapped with the short side of another profiled steel sheet 1 provided with the staggered platform 11 when in use, so that the connecting holes of the two profiled steel sheets 1 are penetrated, and then the fastener 5 is used to pass through the connecting holes to stably connect the two profiled steel sheets 1, realizing the connection between the floor slab combination units of adjacent spans, so that the floor slab formed after the concrete pouring has good integrity and will not produce vertical joints, enhancing the safety and durability of the building structure, while facilitating the on-site construction operation and improving the construction efficiency.

[0050] The staggered platform 11 is formed by stamping and protrudes upward by the thickness of the profiled steel sheet 1. Through the stamping forming process, the upward protruding profiled steel sheet 1 can form a stepped structure. The present application designs the protruding height of the staggered platform 11 to be the same as the thickness of the profiled steel sheet 1, so that after the two profiled steel sheets 1 are overlapped and connected, the bottom surfaces of the two profiled steel sheets 1 are at the same height, enabling them to smoothly transition without obvious height difference, while also facilitating installation and positioning, enhancing the flatness of the floor slab bottom surface to avoid unnecessary repair in the later stage.

[0051] Preferably, the anti-floating link 4 and / or the vertical link 3 are arranged in the rib groove of the profiled steel sheet 1. By arranging the anti-floating link 4 in the rib groove of the profiled steel sheet 1, the length of the anti-floating link 4 can be increased under the condition that the design height of the cavity member 2 is certain, so as to better transfer shear force and tension, improving the strength of the floor slab. Similarly, by arranging the vertical link 3 in the rib groove of the profiled steel sheet 1, the length of the vertical link 3 can be increased under the condition that the design height of the steel mesh 6 is certain. Meanwhile, the anti-floating link 4 and the vertical link 3 each have the same length, facilitating standardized processing and manufacturing, and also facilitating workers to assemble in the factory.

[0052] In one specific embodiment, the fastener 5 described above adopts a bolt, and the anti-floating link 4 adopts a dowel, which are common materials on construction sites.

[0053] The working process of the present example is as follows: the profiled steel sheet 1 is manufactured in a factory, the vertical connecting rod 3 and the anti-floating connecting rod 4 are welded to the profiled steel sheet 1 at the set positions, according to the size of the floor, a plurality of profiled steel sheets 1 are connected to form a whole by using fasteners 5, the cavity component 2 is prevented at the set position on the profiled steel sheet 1, the cavity component 2 is reliably connected with the anti-floating connecting rod 4, then the plurality of floor assembly units are transported integrally to the construction site and installed at the set positions of the floor, the steel bar net 6 is placed in the buckle of the vertical connecting rod 3, and the steel bar net 6 is fixed to the vertical connecting rod 3 through the limiting pin 33; the concrete is poured and cured, and the construction of the dense-ribbed cavity composite structure floor is completed.

[0054] The present application adopts the profiled steel sheet, the vertical connecting rod and the steel bar net to form a whole, which jointly replaces the steel reinforcement cage formed by the longitudinal reinforcement and the stirrup, simplifies the construction steps; the floor assembly unit is prefabricated and assembled in a factory, which significantly improves the industrialization degree of the floor construction, greatly reduces the steel reinforcement processing, binding, transportation and other work at the construction site, and improves the construction efficiency;

[0055] The floor assembly units are connected by overlapping and connected by using fasteners, the stiffness of the profiled steel sheet is high, the bottom mold does not need to be erected during construction, the construction speed is fast, the force is reasonable, the positioning is convenient, the integrity of the floor is better, the weight is lighter, the safety and durability of the building structure are enhanced, the construction is convenient, the labor and material costs are saved, and the construction efficiency is improved.

[0056] The cavity component is connected with the anti-floating connecting rod through the clamping groove, the installation is fast, convenient and reliable, and the problem of the cavity component floating up during the pouring of the concrete is solved.

[0057] The embodiments of the present application are described in detail above, but the content described is only the preferred embodiments of the present application, and cannot be considered as limiting the implementation range of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. A novel multi-ribbed cavity composite floor slab characterized in that: The floor assembly unit comprises a cavity member and a vertical connecting rod, the vertical connecting rod is higher than the cavity member, the reinforcing mesh is connected to the vertical connecting rod in horizontal direction by a buckle, and several floor assembly units are connected together.

2. A novel multi-ribbed cavity composite floor slab as claimed in claim 1, wherein: The cast-in-place concrete is filled in several floor assembly units and covers the reinforcing mesh.

3. A novel multi-ribbed cavity composite floor slab as claimed in claim 2, wherein: The floor assembly unit further comprises a profiled steel sheet, the cavity member is uniformly arranged along the length direction of the profiled steel sheet, and the vertical connecting rod is arranged at the edge of the profiled steel sheet and surrounds the cavity member.

4. A novel multi-ribbed cavity composite floor slab as claimed in claim 3, wherein: An anti-floating connecting rod is arranged between the cavity member and the profiled steel sheet, and the anti-floating connecting rod is buckled with the cavity member.

5. The novel multi-ribbed cavity composite floor slab as claimed in claim 4, wherein: The upper end of the anti-floating connecting rod is provided with a connecting disc, the bottom of the cavity member is provided with a clamping groove, the connecting disc can be inserted into the clamping groove and fixed in the clamping groove by horizontal movement.

6. A novel composite floor slab of the type defined by any one of claims 3-5, characterised in that: The top of the vertical connecting rod is provided with the buckle, the buckle comprises a U-shaped groove with an opening facing upward and a limiting pin matched with the U-shaped groove, the reinforcing steel of the reinforcing mesh is arranged in the U-shaped groove and clamped by the limiting pin.

7. A novel composite floor slab of multi-ribbed hollow core construction as claimed in any one of claims 3 to 5, wherein: The long edges of the profiled steel sheet on both sides are provided with corresponding overlapping holes, and adjacent profiled steel sheets are connected by overlapping through fasteners.

8. A novel multi-ribbed cavity composite floor slab as claimed in claim 7, wherein: The short edge of the profiled steel sheet on one side is provided with a staggered table, the staggered table is provided with a connecting hole for connecting with another profiled steel sheet.

9. The novel multi-ribbed cavity composite floor slab as claimed in claim 8, wherein: The staggered table is formed by stamping and protrudes upward by the thickness of the profiled steel sheet.

10. A novel multi-ribbed cavity composite floor slab as claimed in claim 4 or 5, wherein: The anti-floating connecting rod and / or the vertical connecting rod are arranged in the rib groove of the profiled steel sheet.

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