A cross-shaped steel floor slab component

Abstract

The present invention relates to a steel floor slab member in the shape of a Chinese character "mi", comprising: a bottom plate; a plurality of positioning plates arranged in parallel and spaced apart on the bottom plate, the positioning plates being uniformly provided with a plurality of installation grooves along their length directions, and the installation grooves at the same position on all the positioning plates being located on the same straight line, a reinforcing tooth being provided above the positioning plates; a stiffening member vertically passing through the positioning plates and slidably fitted with the installation grooves, which is formed by a plurality of thin plates uniformly distributed in a ring shape and forms a structure in the shape of a Chinese character "mi". Compared with the prior art, by arranging structures such as the stiffening member in the shape of a Chinese character "mi", the present invention can greatly improve the flexural bearing capacity of the floor slab, and there is no need for a large number of traditional stud welding or steel bar binding. Through the cooperation of the positioning plates, the installation can be completed only by simple plugging and a small amount of welding, and the process is simple, etc.

Description

Technical Field

[0001] The invention belongs to the technical field of floor slab components and relates to a M-shaped steel floor slab component. Background Art

[0002] Steel-concrete composite structures have been widely used in the field of civil engineering due to their good stress-bearing performance, convenient construction and high material utilization. Among them, steel-concrete composite floors achieve coordinated stress by pouring concrete on steel plates or corrugated steel plates, and have the advantages of superior mechanical properties and flexible space utilization.

[0003] However, welded studs or other connectors are often used to enhance the combination effect between the steel plate and the concrete. For example, Chinese patent application CN113107130A provides a prefabricated steel-concrete composite floor, including: a concrete base plate, a web reinforcement pre-embedded in the concrete base plate, a grouting steel pipe fixed on the top of the web reinforcement, water and electricity pipelines, and a partition; wherein the partition is fixed on the grouting steel pipe, an open space is formed between the partition and the concrete base plate, and the water and electricity pipelines are laid in the open space.

[0004] However, the above-mentioned prior art generally has the following problems: (1) The construction of welding studs is cumbersome, the welding workload is large and the quality requirements are high, which can easily lead to stress concentration and welding defects. If the number of studs is insufficient or the welding quality is poor, it is difficult to obtain the ideal combination effect; (2) The steel bar binding process is time-consuming and labor-intensive and prone to deviation, affecting the overall stress performance of the floor slab; (3) When the initial strength of concrete is low, the floor slab is insufficient in stiffness, especially when large spans or thin plates are constructed, temporary supports need to be set up, which increases costs and difficulty. Summary of the invention

[0005] The purpose of the present invention is to provide a M-shaped steel floor component to solve the problems of cumbersome welding stud construction, inconvenient steel bar binding, and insufficient early rigidity of the floor during the construction of existing steel-concrete composite floors.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A M-shaped steel floor component, comprising:

[0008] Base plate;

[0009] A plurality of positioning plates are arranged on the bottom plate in parallel and at intervals, the positioning plates are evenly provided with a plurality of mounting grooves along the length direction thereof, and the mounting grooves at the same position on all positioning plates are located on the same straight line, and the positioning plates are also provided with reinforcing teeth;

[0010] The reinforcing member vertically passes through the positioning plate and is installed in sliding cooperation with the installation groove. The reinforcing member is composed of a plurality of thin plates evenly distributed in a ring shape to form a cross-shaped structure.

[0011] Further, a plurality of through holes are evenly provided on the thin plate, and the adjacent thin plates are fixedly welded together.

[0012] Further, a tooth groove that slidably matches the thin plate on the stiffening member is further provided along the circumferential direction of the mounting groove.

[0013] Further, a first clamping block and a second clamping block are respectively provided at both ends of the stiffening member, and the first clamping block and the second clamping block can be clamped and connected to each other, so that the stiffening member can be spliced along the length direction.

[0014] Furthermore, a clamping groove into which the second clamping block can be inserted is provided in the middle area of the end face of the first clamping block, an assembly groove communicating with the clamping groove is further machined on the side surface of the clamping groove, a limiting block that can extend outwards is provided in the assembly groove through a spring, and a limiting groove into which the limiting block can extend is further provided on the side wall of the second clamping block.

[0015] More preferably, an inclined surface is provided at the end of the limiting block extending outwards, and the inclined surface is located on the surface of the limiting block facing the second clamping block.

[0016] Further, the stiffening member is composed of eight thin plates.

[0017] Further, the positioning plate reinforcing teeth are in a trapezoidal structure and are located directly above the mounting groove.

[0018] Further, the bottom plate is a flat steel plate structure, a unidirectional profiled steel plate structure or a bidirectional profiled steel plate structure.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) By arranging the cross-shaped stiffening member in the present invention, due to its own openings and its connection with the positioning plate, the overall cooperative effect between the bottom plate and the concrete is strengthened, the flexural bearing capacity of the floor slab can be greatly improved, and since the cross-shaped stiffening member is similar to a stud, it has the effect of enhancing the cooperative work between the steel plate and the concrete, so that the operation is simpler compared with the traditional use of a large number of stud weldings or steel bar bindings. Through the cooperation of spot welding and the positioning plate, the installation can be completed only by simple plugging and a small amount of welding, and the process is simple.

[0021] (2) Through the arrangement of the through holes in the present invention, a dowel effect is formed after the concrete is poured. Further, the reinforcing teeth provided cooperate to increase the strength of the positioning plate at the mounting groove, and a stronger meshing is formed with the concrete during the concrete pouring, so as to enhance the overall stiffness and stability of the floor slab, and the temporary support at the bottom of the bottom plate can be reduced or eliminated, further reducing the construction cost and the on-site safety risk.

[0022] (3) When the stiffening member of the present invention needs to pass through more than two positioning plates, one stiffening member can be passed through two positioning plates first, and the end faces of the two stiffening members can be engaged and connected, which makes the installation simpler. When the floor slab size is large, the cross-shaped stiffening member can be produced in sections and connected by simple spot welding, which not only ensures the convenience of transportation and installation but also meets the overall stress requirements.

[0023] (4) The present invention can flexibly adjust the layout according to the stress requirements of the floor slab and the form of the lower steel plate, so as to achieve the best design under different spans and load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic plan view of the steel plate structure of the cross-shaped steel floor slab member;

[0025] Figure 2 It is a schematic view of the end face structure of the stiffening member of the cross-shaped steel floor slab member;

[0026] Figure 3 It is a schematic view of the position of the stiffening member and the positioning plate of the cross-shaped steel floor slab member;

[0027] Figure 4 It is a schematic view of the internal structure of the first clamping block of the cross-shaped steel floor slab member;

[0028] Figure 5 It is a schematic view of the unidirectional profiled steel sheet structure of the cross-shaped steel floor slab member;

[0029] Figure 6 It is a schematic view of the bidirectional profiled steel sheet structure of the cross-shaped steel floor slab member;

[0030] Explanation of the marks in the figure:

[0031] 1 - positioning plate; 2 - stiffening member; 3 - bottom plate; 4 - installation groove; 5 - thin plate; 6 - strengthening teeth; 7 - through hole; 8 - tooth groove; 911 - first clamping block; 912 - second clamping block; 913 - clamping groove; 914 - assembly groove; 915 - spring; 916 - limiting block; 917 - limiting groove. DETAILED DESCRIPTION OF THE INVENTION

[0032] The present invention will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manner and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the following embodiments or examples, if there is no special description of functional components or structures, it means that they are all conventional components or conventional structures adopted by those skilled in the art to achieve the corresponding functions.

[0036] To solve the problems of cumbersome construction of welded studs, inconvenient steel bar binding, and insufficient early stiffness of the floor slab during the construction of the existing steel-concrete composite floor slab, the present invention provides a cross-shaped steel floor slab member. Please refer to Figure 1 and so on as shown, including:

[0037] Bottom plate 3;

[0038] A plurality of positioning plates 1 arranged in parallel at intervals on the bottom plate 3. The positioning plates 1 are uniformly provided with a plurality of mounting grooves 4 along their length directions, and the mounting grooves 4 at the same position on all the positioning plates 1 are located on the same straight line;

[0039] A stiffening member 2 vertically passing through the positioning plate 1 and slidably fitted with the mounting groove 4. It is formed by a plurality of thin plates 5 uniformly distributed in a ring shape and forms a cross-shaped structure.

[0040] In some specific embodiments, a plurality of through holes 7 are evenly provided on the thin plate 5, and the adjacent thin plates 5 can be fixedly connected into one body by welding or the like. Preferably, the shape of the through hole 7 can be circular or oblong to form a dowel effect after concrete pouring. The length of the through hole 7 can be flexibly determined according to the floor slab thickness. For a circular through hole, its diameter is usually about 1 / 6 of the floor slab thickness, while for an oblong through hole (such as an oblong shape), its maximum length is 1 / 3 - 1 / 2 of the floor slab thickness. In addition, in the present invention, the material of the thin plate 5 can be Q235 steel plate or Q345 steel plate, and other steel plates can also be selected according to the requirements of the use occasion.

[0041] In some specific embodiments, a tooth groove 8 that slidably matches the thin plate 5 on the stiffening member 2 is further provided along the circumferential direction of the installation groove 4. By providing the tooth groove 8, the stiffening plate can be limited in cooperation with the thin plate 5, which can not only increase the friction force with the positioning plate 1, but also prevent rotation.

[0042] In some specific embodiments, a first clamping block 911 and a second clamping block 912 are respectively provided at both ends of the stiffening member 2, and the first clamping block 911 and the second clamping block 912 can be clamped and connected to each other, so that the stiffening member 2 can be spliced along the length direction. In this way, when it is necessary to pass the stiffening member 2 through more than two positioning plates 1, one stiffening member 2 can be first passed through two positioning plates 1, and the end faces of the two stiffening members 2 can be clamped and connected, and the installation is simpler.

[0043] In a more specific embodiment, a clamping groove 913 for inserting the second clamping block 912 is provided in the middle area of the end face of the first clamping block 911. An assembly groove 914 communicating with the clamping groove 913 is also machined on the side of the clamping groove 913. A limiting block 916 that can extend outwards is further provided in the assembly groove 914 through a spring 915. A limiting groove 917 for the limiting block 916 to extend into is also provided on the side wall of the second clamping block 912. In this way, during specific work, when the first clamping block 911 and the second clamping block 912 are clamped, the second clamping block 912 extends into the clamping groove 913 and squeezes the limiting block 916 to contract into the assembly groove 914. When the limiting groove 917 corresponds to the limiting block 916, the limiting block 916 extends into the limiting groove 917 under the push of the spring 915 for limiting, ensuring the firmness of the two stiffening members 2 after installation and preventing slipping. In addition, it should be noted that a limiting member, such as a limiting protrusion, can also be provided on the assembly groove 914 to restrict the length of the limiting block 916 extending outwards and ensure that the spring 915 in the assembly groove 914 is always in a compressed state.

[0044] In a more preferred embodiment, one end of the limiting block 916 extending outwards is provided with an inclined surface, and the inclined surface is located on the surface of the limiting block 916 facing the second clamping block 912. By providing the inclined surface, it is convenient for the second clamping block 912 to squeeze the limiting block 916 into the assembly groove 914. Subsequently, under the reset action of the spring 915, the limiting block 916 extends out and cooperates with the limiting groove 917.

[0045] In some specific embodiments, the stiffening member 2 is composed of eight thin plates 5.

[0046] In some specific embodiments, the top of the positioning plate 1 is further provided with reinforcing teeth 6. The reinforcing teeth 6 are in a trapezoidal structure and are located directly above the installation groove 4. By providing the reinforcing teeth 6, the strength of the positioning plate 1 at the installation groove 4 can be increased, and a stronger meshing can be formed with the concrete during concrete pouring.

[0047] In some specific embodiments, the bottom plate 3 is a flat steel plate structure, a one-way profiled steel plate structure or a two-way profiled steel plate structure.

[0048] Each of the above embodiments can be implemented alone, or can be combined in any two or more combinations.

[0049] The above embodiments will be described in more detail below in conjunction with specific examples.

[0050] Example 1

[0051] Please refer to Figures 1 to 6 As shown, this embodiment provides a technical solution: a cross-shaped steel floor slab member, including a positioning plate 1, a stiffening member 2 and a bottom plate 3. A plurality of positioning plates 1 are provided and are spaced apart and arranged above the bottom plate 3. A plurality of installation grooves 4 are evenly provided on the positioning plate 1. The installation grooves 4 at the same position on the plurality of positioning plates 1 are on the same straight line. The stiffening member 2 is composed of eight thin plates 5. The thin plates 5 are evenly distributed in a ring shape to form a cross shape. The stiffening member 2 is slidably installed with the installation groove 4. Reinforcing teeth 6 are provided above the positioning plate 1.

[0052] As Figures 1 - 6 shown, a plurality of through holes 7 are evenly provided on the thin plate 5. The adjacent thin plates 5 are welded. The material of the thin plate 5 is Q235 steel plate or Q345 steel plate. The through holes 7 on the thin plate 5 are distributed in a circular or oblong shape to form a dowel effect after concrete pouring.

[0053] As Figures 1 - 6 shown, a plurality of tooth grooves 8 slidably adapted to the thin plate 5 are provided at intervals on the installation groove 4. By providing the tooth grooves 8, it is used to limit the stiffening member 2, which can not only increase the friction with the positioning plate 1, but also prevent rotation.

[0054] As Figures 1 - 6As shown, first clamping blocks 911 and second clamping blocks 912 are respectively arranged at both ends of the stiffening member 2. The first clamping blocks 911 and the second clamping blocks 912 are arranged in a mutually clamped manner. By arranging the first clamping blocks 911 and the second clamping blocks 912 at both ends of the stiffening member 2, it is convenient to perform clamping and positioning on the end faces of two adjacent stiffening members 2. When it is necessary to pass the stiffening member 2 through more than two positioning plates 1, one stiffening member 2 can be passed through two positioning plates 1 first, and the end faces of the two stiffening members 2 can be clamped and connected, making the installation simpler.

[0055] As Figures 1 - 6 shown, a clamping groove 913 is arranged on the end face of the first clamping block 911. Assembly grooves 914 communicating with the clamping groove 913 are symmetrically arranged inside the first clamping block 911 at the position of the clamping groove 913. A limiting block 916 is arranged in the assembly groove 914 through a spring 915. A limiting groove 917 adapted to the limiting block 916 is arranged on the side wall of the second clamping block 912. When the first clamping block 911 and the second clamping block 912 are clamped, the second clamping block 912 extends into the clamping groove 913 to squeeze the limiting block 916 to contract into the assembly groove 914. When the limiting groove 917 corresponds to the limiting block 916, the limiting block 916 extends into the limiting groove 917 under the push of the spring 915 for limiting, ensuring the firmness of the two stiffening members 2 after installation and preventing slipping.

[0056] As Figures 1 - 6 shown, an inclined surface is arranged at the outer end of the extended limiting block 916. The inclined surface is located on the side of the limiting block 916 facing the outside. By arranging the inclined surface, it is convenient for the second clamping block 912 to squeeze the limiting block 916 into the assembly groove 914.

[0057] As Figures 1 - 6 shown, a plurality of strengthening teeth 6 are arranged directly above the installation groove 4. The strengthening teeth 6 are arranged in a trapezoidal structure. By arranging the strengthening teeth 6, the strength of the positioning plate 1 at the installation groove 4 can be increased, and a stronger meshing can be formed with the concrete when pouring the concrete.

[0058] In addition, in this embodiment, the bottom plate 3 can be a flat steel plate structure, a unidirectional profiled steel plate structure or a bidirectional profiled steel plate structure, as shown in Figure 1 , Figure 5 and Figure 6 shown

[0059] The working principle of the cross-shaped steel floor slab member in this embodiment is as follows:

[0060] During use, the stiffening member 2 is passed through a plurality of mounting grooves 4 and snap-fitted between a plurality of positioning plates 1. When the number of positioning plates 1 is large, one stiffening member 2 can be first passed through two positioning plates 1, and the end faces of adjacent stiffening members 2 are snap-connected, which makes the installation more convenient. After installation, the bottom of the stiffening member 2 is spot-welded to the bottom plate 3 to ensure the stability of the stiffening member 2. Subsequently, the component is assembled on the floor slab and takes shape after pouring concrete to form a composite floor slab. When pouring concrete, the concrete flows into a plurality of through holes 7 on the thin plate 5, which can form a dowel effect. The cross-shaped structure formed by the stiffening member 2 forms a more reliable bond with the concrete, reaching a more stable state.

[0061] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present invention as disclosed should be within the protection scope of the present invention.

Claims

1. A M-shaped steel floor member, characterized in that: include: Base plate; A plurality of positioning plates are arranged on the bottom plate in parallel and at intervals, the positioning plates are evenly provided with a plurality of mounting grooves along the length direction thereof, and the mounting grooves at the same position on all positioning plates are located on the same straight line, and the positioning plates are also provided with reinforcing teeth; The reinforcing member vertically passes through the positioning plate and is installed in sliding cooperation with the installation groove. The reinforcing member is composed of a plurality of thin plates evenly distributed in a ring shape to form a cross-shaped structure.

2. The M-shaped steel floor member according to claim 1, characterized in that: The thin plates are also evenly provided with a plurality of through holes, and adjacent thin plates are fixed by welding.

3. The M-shaped steel floor member according to claim 1, characterized in that: The installation groove is also provided with tooth grooves along the circumferential direction for sliding matching with the thin plate on the stiffener.

4. The M-shaped steel floor member according to claim 1, characterized in that: The two ends of the stiffener are respectively provided with a first clamping block and a second clamping block, and the first clamping block and the second clamping block can be mutually engaged and connected, so that the stiffener can be spliced ​​along the length direction.

5. The M-shaped steel floor member according to claim 4, characterized in that: A slot for inserting the second card block is provided in the middle area of ​​the end face of the first card block, and an assembly slot connected to the slot is also processed on the side of the card slot. A limit block that can extend outward is provided in the assembly slot through a spring, and a limit slot for extending the limit block is also provided on the side wall of the second card block.

6. The M-shaped steel floor member according to claim 5, characterized in that: An outwardly extending end of the limiting block is provided with an inclined surface, and the inclined surface is located on a side of the limiting block facing the second clamping block.

7. The M-shaped steel floor member according to claim 1, characterized in that: The stiffener is composed of eight thin plates.

8. The M-shaped steel floor member according to claim 1, characterized in that: The reinforcing teeth are in a trapezoidal structure and are located directly above the mounting groove.

9. The M-shaped steel floor member according to claim 1, characterized in that: The bottom plate is a flat steel plate structure, a one-way corrugated steel plate structure or a two-way corrugated steel plate structure.

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