Floor support plate made of metal combined frame with ribs on side parts

Abstract

According to the floor support plate manufactured by the metal combined frame with the ribs on the side parts, the continuously bent bottoms of the web ribs in the combined frame adopt flat section steel bars, so that the floor support plate is simple to manufacture, less in material consumption and more stable in connection with the bottom plate, the combined frame and the bottom plate directly transfer force and jointly bear force, the material properties of the combined frame and the bottom plate are exerted, and the rigidity of the whole structure is higher. The upper chord is of a steel pipe or profile steel or other metal rod piece structures, the strength of the structure can be improved, the steel consumption can be reduced, economical efficiency is better, and the strength, rigidity and overall bearing capacity are higher. The side ribs are arranged on the outer sides of the web ribs and act together with the upper chord, so that the structural construction requirement of the steel bars in the floor support plate can be met, and the floor support plate can be combined with bottom plates for use and can also be used for the floor support plate with the requirement of a protective layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of superimposed frame and superimposed board, in particular to a floor support plate made of metal combined frame with side reinforcement. BACKGROUND

[0002] The existing truss is composed of upper chord, lower chord and web, wherein the upper chord is steel bar, the lower part of the web has transverse bending, and the web is mainly used for making superimposed board or floor support plate; the transverse bending at the bottom of the web makes the truss more troublesome to make, low in efficiency, increases the use of materials, and the connection between the bottom plate and the web is located at the horizontal section of the transverse bending, the elasticity at the bending position makes the rigidity of the overall structure worse, and the bottom plate can only be used as formwork and cannot bear the downward tension of the structure. When the span of the floor support plate is large or the load is large, the steel bar as the upper chord needs to be thickened, which increases the steel consumption of the structure to a certain extent, and the floor support plate is poor in economy, small in strength, rigidity and overall load-bearing capacity. In addition, in the combined truss described in the Chinese public patent with the patent number "201820932969.6", the lower chord is located at the lowermost position of the truss, which cannot meet the structural requirements of the steel bar in the floor support plate and cannot be used for the floor support plate with protective layer requirements. SUMMARY

[0003] The utility model aims at providing a floor support plate made of metal combined frame with side reinforcement, which is different from the structure of the traditional truss, the bottom of the web adopts horizontal section steel bar, and side reinforcement is arranged outside the web, the combined frame directly transmits force to the bottom plate and bears force together with the bottom plate, the material properties of the bottom plate are utilized, and the problems in the prior art are solved.

[0004] The utility model discloses a technical scheme that solves its technical problem is: the metal combined frame of side part with muscle, including upper chord, the both sides of upper chord length direction are connected with web, each web is made by one steel bar continuous bending, and the bottom position of web continuous bending is all flat section steel bar, and the length direction of flat section steel bar is parallel with upper chord, and the lateral muscle is connected with the outside of web, and the lateral muscle is parallel with upper chord. Upper chord is steel pipe, profile steel or other metal rod structure. Upper chord is round steel pipe, long round pipe or polygonal steel pipe, and the steel pipe can be filled with hard filler. Upper chord is H-shaped steel, channel steel or angle steel. The recess of profile steel can be filled with hard filler. The hard filler in the recess of profile steel is concrete or mortar, or the steel bar is placed in concrete and mortar. Upper chord is the combination structure of steel bar and steel bar, the combination structure of steel bar and steel pipe, the combination structure of steel bar and profile steel, the combination structure of steel pipe and steel pipe. The upper position of web continuous bending is all arc section muscle. The upper position of web continuous bending is all flat section steel bar. The lateral muscle is located in the lower position of the outside of web. The lateral muscle is located in the outside of web, and the height position of the lateral muscle from the bottom of the bottom flat section steel bar of web is not less than 5mm and not more than 20mm. The both ends of web length direction are all vertical muscle. The floor support plate made of the metal combined frame of side part with muscle includes the bottom plate, and no less than one row of metal combined frame of side part with muscle is connected on the bottom plate, and the flat section steel bar in each metal combined frame of side part with muscle is fixed on the bottom plate. The bottom plate is metal plate. The bottom plate is non-metal plate, and the non-metal plate is connected with the metal combined frame through the connecting piece. The both ends of flat section steel bar length direction are fixed and welded on the bottom plate through the welding spot. The bottom of flat section steel bar is welded and fixed on the bottom plate. A plurality of first convex ribs are arranged on the bottom plate, the first convex rib is bent into n type on the bottom plate, and is formed by extruding each other in the horizontal direction, and the bottom of flat section steel bar is welded and fixed on the first convex rib. A plurality of second convex ribs are arranged on the bottom plate, the second convex rib is bent into M type on the bottom plate, and is formed by extruding each other in the horizontal direction, and the bottom of flat section steel bar is welded and fixed on the second convex rib. A plurality of third convex ribs are arranged on the bottom plate, the third convex rib is bent into T type on the bottom plate, and is formed by extruding in the vertical direction, and flat section steel bar is welded and fixed on the third convex rib. The top of third convex rib is bent into arc shape towards the bottom plate. One side of the bottom plate is provided with first connecting hook, and the other side of the bottom plate is provided with second connecting hook matched with first connecting hook, and the second connecting hook is arranged in rotational symmetry with first connecting hook. The floor support plate can be spliced and used, and the metal bottom plates of adjacent floor support plates are connected through nesting, curling, bending into edge or edge curling. The bottom of bottom plate is provided with decorative layer. The side of bottom plate length direction is provided with edge.At least one set of reinforcing mechanisms is arranged between the two sides of the length direction of the side reinforced metal combined frame and the bottom plate, the reinforcing mechanism comprises vertical arranged vertical ribs and horizontal arranged horizontal ribs, the upper end of the vertical rib is welded and fixed with the upper chord, the lower end of the vertical rib is welded and fixed with the bottom plate, the two ends of the horizontal rib are welded and fixed with the two side ribs respectively, and the vertical rib and the horizontal rib are vertically welded and connected.

[0005] The positive effect of the floor support plate manufactured by the side reinforced metal combined frame is that: the bottom of the continuous bending web rib in the combined frame adopts flat section steel, which is simple to manufacture, saves materials, and is more stable in connection with the bottom plate, the combined frame and the bottom plate directly transmit force and jointly bear stress, the material properties of the combined frame and the bottom plate are utilized, and the overall structure is more rigid. The upper chord adopts a steel pipe, a profile steel or other metal rod structure, which can not only improve the strength of the structure, but also save the amount of steel, and is more economical and has stronger strength, rigidity and overall carrying capacity. The outer side of the web rib is provided with a side rib, which jointly acts with the upper chord, can meet the structural requirements of the steel in the floor support plate, can be combined with the bottom plate, and can be used for the floor support plate with a protective layer. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 is a three-dimensional structure schematic view of the side reinforced metal combined frame;

[0007] Figure 2 is a front view of the side reinforced metal combined frame;

[0008] Figure 3 is Figure 2 the left view;

[0009] Figure 4 is Figure 2 the top view;

[0010] Figure 5 is a structure schematic view of the upper chord being a profile steel;

[0011] Figure 6 is a structure schematic view of the upper part position of the web rib being a flat section steel;

[0012] Figure 7 is a structure schematic view of the upper chord being an elliptical section steel pipe;

[0013] Figure 8 is a three-dimensional structure schematic view of the floor support plate manufactured by the side reinforced metal combined frame;

[0014] Figure 9 is a structure schematic view of the upper chord of the combined frame in the floor support plate being a profile steel;

[0015] Figure 10 is a structural diagram of the upper part of the continuous bending of the web of the combined frame in the floor support plate being a flat section steel bar;

[0016] Figure 11 is a structural diagram of the upper chord of the combined frame in the floor support plate being an elliptical steel pipe;

[0017] Figure 12 is a structural diagram of the two ends of the flat section steel bar in the length direction being fixedly connected to the bottom plate through welding points;

[0018] Figure 13 is a structural diagram of the flat section steel bar being fixedly connected to the bottom plate through welding at the bottom;

[0019] Figure 14 is a structural diagram of the first convex rib being arranged on the bottom plate;

[0020] Figure 15 is a structural diagram of the second convex rib being arranged on the bottom plate;

[0021] Figure 16 is a structural diagram of the connecting hooks being arranged on both sides of the bottom plate;

[0022] Figure 17 is a structural diagram of the crimping being arranged on the bottom plate;

[0023] Figure 18 is a structural diagram of another structure crimping being arranged on the bottom plate;

[0024] Figure 19 is a structural diagram of the decorative layer being arranged on the bottom of the bottom plate;

[0025] Figure 20 is a structural diagram of the upper chord of the metal combined frame being a round pipe;

[0026] Figure 21 is a structural diagram of the upper chord being a combination structure of steel bars and steel bars;

[0027] Figure 22 is a structural diagram of the upper chord being a combination structure of steel bars and steel pipes;

[0028] Figure 23 is a structural diagram of the upper chord being a combination structure of steel bars and sectional steels;

[0029] Figure 24 is a structural diagram of the upper chord being a combination structure of steel pipes and steel pipes;

[0030] Figure 25 is a structural diagram of the end part of the web in the length direction being arranged with vertical bars;

[0031] Figure 26Fig. 1 is a structural diagram of a metal assembly frame with two sets of reinforcing mechanisms arranged between the two ends and the bottom plate in the length direction of the metal assembly frame;

[0032] Figure 27 Fig. 2 is a structural diagram of a metal assembly frame with a sharp head arranged at the lower part of the web and welded to the bottom plate;

[0033] Figure 28 Fig. 3 is a structural diagram of a metal assembly frame with a sharp head arranged at the lower part of the web and welded to the upper rib of the bottom plate;

[0034] Figure 29 Fig. 4 is a structural diagram of a metal assembly frame with a third rib arranged on the bottom plate;

[0035] Figure 30 Fig. 5 is a structural diagram of a metal assembly frame with a connecting rod arranged between the upper chords of adjacent side parts with ribs;

[0036] Figure 31 Fig. 6 is a structural diagram of a metal assembly frame with a channel steel as the upper chord installed at the top of the web;

[0037] Figure 32 Fig. 7 is a structural diagram of a metal assembly frame with an angle steel as the upper chord installed between the webs;

[0038] Figure 33 Fig. 8 is a structural diagram of a metal assembly frame with an angle steel as the upper chord installed at the top of the web;

[0039] Figure 34 Fig. 9 is a structural diagram of a metal assembly frame with a third type of rolled edge arranged on the bottom plate;

[0040] Figure 35 Fig. 10 is a structural diagram of a metal assembly frame with a fourth type of rolled edge arranged on the bottom plate;

[0041] Figure 36 Fig. 11 is a structural diagram of a metal assembly frame with a third rib arranged on the bottom plate, with the top bent into an arc shape;

[0042] Figure 37 Fig. 12 is a structural diagram of a metal assembly frame with a ladder-shaped cross-section steel pipe as the upper chord and located between the two side webs;

[0043] Figure 38 Fig. 13 is a structural diagram of a metal assembly frame with a ladder-shaped cross-section steel pipe as the upper chord and located at the top of the two side webs;

[0044] Figure 39 Fig. 14 is a structural diagram of a metal assembly frame with a rectangular cross-section steel pipe as the upper chord and located between the two side webs;

[0045] Figure 40 Fig. 15 is a structural diagram of a metal assembly frame with a rectangular cross-section steel pipe as the upper chord and located at the top of the two side webs;

[0046] Figure 41 Fig. 16 is a structural diagram of a metal assembly frame with a long circular cross-section steel pipe as the upper chord and located at the top of the two side webs;

[0047] Figure 42 yes Figure 41 Side view of the middle structure;

[0048] Figure 43 This is a schematic diagram of a structure in which a set of reinforcing mechanisms are installed between the two ends of the metal frame along its length and the base plate.

[0049] Figure 44 This is a side view of 30 structures. Detailed Implementation

[0050] The present invention describes a metal frame with side ribs, such as... Figures 1-4 As shown, it includes an upper chord 1, with web reinforcement 2 connected to both sides along its length. Each web reinforcement 2 is made by continuously bending a single steel bar. The bottom of the continuous bend of the web reinforcement 2 is a flat section of steel bar 3, which is parallel to the length of the upper chord 1. Side reinforcement 4 is connected to the outside of the web reinforcement 2, and the side reinforcement 4 is parallel to the upper chord 1. The upper chord 1 can be located between the two web reinforcement 2 or at the top of the two web reinforcement 2.

[0051] Among them, the flat section steel bar 3 is simple to manufacture, uses less material, has a more stable connection with the bottom plate, and the overall structure is more rigid.

[0052] Furthermore, the upper chord 1 is a steel pipe, structural steel, or other metal rod structure, such as... Figure 5 As shown, the steel section can be H-beams, channel steel, angle steel, or other structures. The upper chord 1 can be a round steel pipe, an oblong pipe, or a polygonal steel pipe. The steel pipe can be filled with a rigid filler 6, which can be existing cement mortar or concrete, and can improve the strength of the upper chord 1 to a certain extent. In addition, the end face structure of the steel pipe can also be an elliptical, rectangular, trapezoidal, or other polygonal cross-section. Using steel pipes, steel sections, or other metal rod structures for the upper chord 1 not only improves the strength of the structure but also saves steel consumption, resulting in better economy and stronger strength, stiffness, and overall load-bearing capacity.

[0053] Furthermore, the groove of the steel section can be filled with a rigid filler 6, which is concrete or mortar, or steel bars are placed in the concrete or mortar.

[0054] Furthermore, such as Figures 21-24 As shown, the upper chord 1 can also be a metal rod structure consisting of a combination of reinforcing bars, a combination of reinforcing bars and steel pipes, a combination of reinforcing bars and structural steel, or a combination of steel pipes and steel pipes. The upper chord 1 is freely combined and welded together from steel pipes, reinforcing bars, structural steel, and other metal rod structures, which effectively improves the overall strength of the upper chord 1, saving steel consumption while ensuring the performance of the overall metal frame.

[0055] Furthermore, the upper part of the continuous bending of the abdominal rib 2 is all arc-shaped ribs 5, and the arc-shaped ribs 5 are fixedly welded to both sides of the upper chord 1.

[0056] Furthermore, the upper part of the continuously bent web reinforcement 2 consists of flat steel bars 3, which are fixedly welded to both sides of the upper chord 1. The fact that both the upper and lower parts of the continuously bent web reinforcement 2 consist of flat steel bars 3 facilitates uniform bending processing, and that the upper and lower ends of the web reinforcement 2 do not need to be distinguished during installation with the upper chord 1, thus improving the processing and manufacturing efficiency of the assembled frame. The fixed connection between the web reinforcement 2 and the upper chord 1 can be achieved through contact welding, apex welding, or multi-point welding, as long as it achieves a fixed connection between the web reinforcement 2 and both sides of the upper chord 1.

[0057] Furthermore, the side reinforcement 4 is located at the lower part of the outer side of the web reinforcement 2, and the distance between the side reinforcement 4 and the bottom of the bottom flat section reinforcement 3 of the web reinforcement 2 is not less than 5mm and not more than 20mm.

[0058] Furthermore, such as Figure 25 As shown, both ends of the longitudinal reinforcement 2 are vertical ribs. The vertical ribs effectively improve the tensile, bending, and shear resistance of the ends of the metal frame along its length.

[0059] The floor decking made of a metal frame with side reinforcement described in this utility model, such as... Figure 8 As shown, the system includes a base plate 7, on which at least one row of side-reinforced metal frames are connected. The flat steel bars 3 in each side-reinforced metal frame are fixed to the base plate 7. The base plate 7 can be a metal plate or a non-metal plate. When the base plate 7 is a metal plate, the metal frames can be directly welded and fixed to it. When the base plate 7 is a non-metal plate, it is connected to the metal frames via connectors.

[0060] Furthermore, such as Figures 9-11 As shown, analogous to a metal frame with side reinforcement, the frame in the floor deck made of a metal frame with side reinforcement includes an upper chord 1, which is a steel pipe, structural steel, or other metal rod structure. The upper part of the continuously bent web reinforcement 2 consists of arc-shaped reinforcement 5. Alternatively, the upper part of the continuously bent web reinforcement 2 can also consist of flat reinforcement 3. Side reinforcement 4 is connected to the outer side of the web reinforcement 2, and the height of the side reinforcement 4 from the flat reinforcement 3 is 5-20mm.

[0061] The side reinforcement 4 set on the outside of the web reinforcement 2 works together with the top chord 1 to meet the spacing requirements of the steel reinforcement structure in the floor deck. It can be used not only in combination with decorative panel base plates, but also in floor decks with protective layer requirements.

[0062] The fixing connection method between the horizontal steel bar 3 and the bottom plate 7 can be as follows: Figure 12As shown, the two ends of the flat section steel bar 3 in the length direction are fixedly welded on the bottom plate 7 through welding points. Alternatively, as shown in Figure 13 As shown, the bottom of the flat section steel bar 3 is fixedly welded on the bottom plate 7.

[0063] Further, in order to improve the connection strength between the flat section steel bar 3 and the bottom plate 7, as shown in Figure 14 As shown, the bottom plate 7 is provided with a plurality of first convex ribs 8, the first convex ribs 8 are bent into n-shaped and are formed by extruding each other in the transverse direction, and the flat section steel bar 3 is fixedly welded on the first convex ribs 8. The forming of the first convex ribs 8 can be that the extruding machine or the punching machine is used to form the convex ribs on the bottom plate 7.

[0064] Further, as shown in Figure 15 As shown, the bottom plate 7 is provided with a plurality of second convex ribs 9, the second convex ribs 9 are bent into M-shaped and are formed by extruding each other in the transverse direction, and the flat section steel bar 3 is fixedly welded between two adjacent convex ribs of the second convex ribs 9. The forming of the second convex ribs 9 can be that the extruding machine or the punching machine is used to extrude the two adjacent convex ribs of the bottom plate 7 to be close to each other, so as to eliminate the internal cavity and obtain the convex rib structure with higher strength, so as to facilitate the welding of the flat section steel bar 3 on the upper side of the convex rib.

[0065] Further, as shown in Figure 29 As shown, the bottom plate 7 is provided with a plurality of third convex ribs 16, the third convex ribs 16 are bent into T-shaped and are formed by extruding in the vertical direction, and the flat section steel bar 3 is fixedly welded on the third convex ribs 16. The third convex ribs 16 can be formed by using the extruding machine or the punching machine. The third convex ribs 16 are composed of three layers of bottom plates, which can effectively avoid the welding of the convex rib through the flat section steel bar 3 during the welding connection process, so as to improve the strength and stability of the whole device.

[0066] Further, as shown in Figure 36 As shown, the top of the third convex rib 16 is bent into arc-shaped towards the bottom plate 7, wherein the top is arranged in arc-shaped, so as to facilitate the placement of the flat section steel bar 3 and form the positioning, which is beneficial to the subsequent welding and fixing operation.

[0067] Further, in order to facilitate the combination and splicing between the floor support plates, as shown in Figure 16 As shown, one side of the bottom plate 7 is provided with a first connecting hook 10, and the other side of the bottom plate 7 is provided with a second connecting hook 11 matched with the first connecting hook 10, and the second connecting hook 11 is arranged in rotational symmetry with the first connecting hook 10. Alternatively, as shown in Figure 17 and Figure 18As shown, the floor support plate can be used in splicing, and the metal bottom plate (7) of adjacent floor support plates is connected by nesting, curling, bending to form a folded edge or a curled edge (12), wherein the mutually matched curled edges 12 can be curled by 90 degrees, 180 degrees or 360 degrees, the adjacent metal plates are matched and connected, and the matched curled edges 12 can be pre-connected and fixed at the opening position by rivets or welding spots.

[0068] Further, as shown in the drawings, Figure 19 The bottom plate 7 is provided with a decorative layer 13, which is suitable for floor support plates with protective layer requirements and can also be used as a decorative plate.

[0069] Further, in order to improve the strength of the length direction end of the metal combined frame, as shown in the drawings, Figure 26 The side of the bottom plate 7 in the length direction is provided with a folded edge, which can not only strengthen the rigidity of the bottom plate 7, but also be used for bending or curling to connect the floor support plates together when the floor support plates are spliced.

[0070] Further, at least one set of reinforcing mechanisms is arranged between the length direction sides of the side-reinforced metal combined frame and the bottom plate 7, the reinforcing mechanism comprises a vertical vertical rib 14 and a horizontal horizontal rib 15, wherein the upper end of the vertical rib 14 is welded and fixed with the upper chord 1, the lower end of the vertical rib 14 is welded and fixed with the bottom plate 7, the two ends of the horizontal rib 15 are respectively welded and fixed with the two side ribs 4, and the vertical rib 14 and the horizontal rib 15 are vertically welded and connected. The above structure can increase the overall strength and the tensile and shear resistance when the cross beam is arranged at the bottom of the metal combined frame.

[0071] Further, as shown in the drawings, Figure 27 And 28 The bottom of the continuously bent web rib 2 can also be arranged in a sharp shape, and when the bottom plate 7 is a metal plate, the sharp end of the bottom of the web rib 2 can be directly welded and fixed on the bottom plate 7 or the convex rib of the bottom plate 7.

[0072] Further, as shown in the drawings, Figure 30 At least one connecting rod 17 is connected and fixed between the upper chords 1 of the side-reinforced metal combined frames at adjacent positions on the bottom plate 7, and the connecting rod 17 is arranged horizontally relative to the bottom plate 7. The arrangement of the connecting rod 17 can increase the stability of the adjacent side-reinforced metal combined frames on the bottom plate 7, and can also provide the overall manufacturing floor support plate with compression resistance.

[0073] The technical scheme of the utility model is not limited to the scope of the embodiments described in the utility model. The technical content not described in detail in the utility model is known technology.

Claims

1. A floor deck made of a combination of side metal ribs, characterized in that: The roof truss comprises a top chord (1) and a bottom plate (7), the length direction of the top chord (1) is connected with web bars (2) on both sides, each web bar (2) is made of a continuous bending of a steel bar, the bottom part of the continuous bending of the web bar (2) is a flat section steel bar (3), the flat section steel bar (3) is parallel to the length direction of the top chord (1), a side bar (4) is connected to the outside of the web bar (2), and the side bar (4) is parallel to the top chord (1); The bottom plate (7) is a metal plate, and at least one row of side steel bar combined racks are connected to the bottom plate (7), and the flat section steel bars (3) in each side steel bar combined rack are fixed on the bottom plate (7); At least one set of reinforcing mechanisms is arranged between the length direction of the side steel bar combined rack and the bottom plate (7), the reinforcing mechanism comprises vertically arranged vertical bars (14) and horizontally arranged horizontal bars (15), the upper end of the vertical bar (14) is welded and fixed with the top chord (1), the lower end of the vertical bar (14) is welded and fixed with the bottom plate (7), the two ends of the horizontal bar (15) are respectively welded and fixed with the side bars (4) on both sides, and the vertical bar (14) and the horizontal bar (15) are vertically welded and connected.

2. The floor deck of claim 1, wherein: The top chord (1) is a steel pipe, a profile steel or other metal rod structure.

3. The floor deck of claim 2 wherein: The top chord (1) is a round steel pipe, an oblong pipe or a polygonal steel pipe, and the steel pipe can be filled with a hard filler (6).

4. The floor deck of claim 2, wherein: The top chord (1) is an H-shaped steel, a channel steel or an angle steel.

5. The floor deck of claim 2, wherein: The groove of the profile steel can be filled with a hard filler (6).

6. The floor deck of claim 5 wherein: The hard filler (6) in the groove of the profile steel is concrete or mortar, or a steel bar is arranged in the concrete or mortar.

7. The floor deck of claim 2 wherein: The top chord (1) is a metal rod structure of a combination of a steel bar and a steel bar, a combination of a steel bar and a steel pipe, a combination of a steel bar and a profile steel, or a combination of a steel pipe and a steel pipe.

8. The floor deck of claim 1 wherein: The upper part of the continuous bending of the web bar (2) is an arc section bar (5).

9. The floor deck of claim 1 wherein: The upper part of the continuous bending of the web bar (2) is a flat section steel bar (3).

10. The floor deck of claim 1, wherein: The side bar (4) is located at the lower part of the outside of the web bar (2).

11. The floor deck of claim 1 wherein: The side bar (4) is located at the lower part of the outside of the web bar (2), and the height position of the bottom part of the side bar (4) from the bottom part of the flat section steel bar (3) of the web bar (2) is not less than 5 mm and not more than 20 mm.

12. The floor deck of claim 1, wherein: The two ends of the length direction of the web bar (2) are vertical bars.

13. The floor deck of claim 1 wherein: The two ends of the length direction of the flat section steel bar (3) are fixed and welded on the bottom plate (7) through welding points.

14. The floor deck of claim 1, wherein: The bottom part of the flat section steel bar (3) is welded and fixed on the bottom plate (7).

15. The floor deck of claim 1, wherein: The bottom plate (7) is provided with a plurality of first convex ribs (8), the first convex ribs (8) are n-shaped by bending the bottom plate (7), and are formed by being pressed in the transverse direction, and the bottom part of the flat section steel bar (3) is welded and fixed on the first convex ribs (8).

16. The floor deck of claim 1, wherein: The bottom plate (7) is provided with a plurality of second convex ribs (9), the second convex ribs (9) are M-shaped by bending the bottom plate (7), and are formed by being pressed in the transverse direction, and the bottom part of the flat section steel bar (3) is welded and fixed on the second convex ribs (9).

17. The floor deck of claim 1, wherein: The bottom plate (7) is provided with a plurality of third convex ribs (16), the third convex ribs (16) are T-shaped by bending the bottom plate (7), and are formed by being pressed in the vertical direction, and the flat section steel bar (3) is welded and fixed on the third convex ribs (16).

18. The floor deck of claim 17, wherein: The top of the third convex rib (16) is bent into an arc shape towards the bottom plate (7).

19. The floor deck of claim 1, wherein: One side of the bottom plate (7) is provided with a first connecting hook (10), and the other side of the bottom plate (7) is provided with a second connecting hook (11) matched with the first connecting hook (10), and the second connecting hook (11) is arranged in rotational symmetry with the first connecting hook (10).

20. The floor deck of claim 1, wherein: The floor support plate can be used in splicing, and the metal bottom plates (7) of adjacent floor support plates are connected through nesting, curling, and bending to form a folded edge or a curled edge (12).

21. The floor deck of claim 1, wherein: The bottom of the bottom plate (7) is provided with a decorative layer (13).

22. The floor deck of claim 1, wherein: The side of the bottom plate (7) in the length direction is provided with a folded edge.

23. The floor deck of claim 1, wherein: Not less than one connecting rod (17) is fixed and connected between the top chords (1) of the metal combined frames with ribs on the side of the adjacent positions on the bottom plate (7), and the connecting rod (17) is arranged horizontally relative to the bottom plate (7).

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