Floor support plate

Abstract

According to the floor support plate, the continuously-bent bottom of a web bar in a combined frame is not transversely bent, manufacturing is easy, material consumption is low, connection with a bottom plate is more stable, force is directly transmitted between the combined frame and a metal bottom plate, the combined frame and the metal bottom plate are jointly stressed, the material properties of the combined frame and the metal bottom plate are brought into play, 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. Side ribs can be arranged on the side faces of the web ribs according to engineering requirements and act together with the bottom plate. The structural construction requirement of the steel bars in the floor support plate can be met, and the steel bars can not only be combined with metal bottom plates, but also be used for the floor support plate with the requirement of a protective layer. Compared with a traditional truss floor support plate, the steel consumption can be reduced by 8-15%, and the rigidity can be improved by about 10%.

Description

Technical Field

[0001] The invention relates to the technical field of floor slabs, in particular to a floor decking plate. Background Art

[0002] The existing trusses are composed of an upper chord, a lower chord and a web, wherein the upper chord is a steel bar, and the lower part of the web has a horizontal bend, which is mainly used for welding with the bottom plate. The horizontal bend at the bottom of the web makes the production of the truss more troublesome, with low efficiency, increased material consumption, and the connection with the bottom plate is located in the horizontal section of the horizontal bend. The elasticity of the bend will make the rigidity of the overall structure worse, and the bottom plate can only be used as a template and cannot bear the lower tension of the structure. When the span of the floor deck is large or the load is large, the steel bar as the upper chord needs to be thickened, which increases the amount of steel used in the structure to a certain extent, which is not only economical, but also has low strength, rigidity and overall bearing capacity. In addition, in the combined truss described in the Chinese public patent with patent number "201820932969.6", the lower chord is at the lowest position of the truss, which cannot meet the structural requirements of the steel bars in the floor deck, and cannot be used for floor decks with protective layer requirements. Summary of the invention

[0003] The purpose of the present invention is to provide a floor decking plate, which is different from the structure of a traditional truss. The bottom of its web reinforcement is directly welded to the convex ribs of the metal bottom plate, the combined frame directly transmits force to the metal bottom plate and is combined with the side reinforcement to bear force, thereby giving full play to the tensile resistance of the metal bottom plate and solving the problems in the prior art.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a floor deck, including a metal bottom plate, connected to the metal bottom plate with at least one row of metal assembly frames, each metal assembly frame includes an upper chord, and both sides or the bottom of the upper chord are connected with web reinforcement, each web reinforcement is made by continuously bending a steel bar, and the lower part of the web reinforcement does not turn outward, and a plurality of convex ribs are arranged on the metal bottom plate, each convex rib is arranged parallel to the upper chord, and the bottom of the continuous bending of the web reinforcement is welded and fixed on the convex rib. The bottom of the continuous bending of the web reinforcement is a flat section of steel bar that is straight and does not turn outward, the flat section steel bar is parallel to the length direction of the upper chord, and the flat section steel bar is welded and fixed on the convex rib. Side reinforcement is connected to the inner side of the web reinforcement, and the side reinforcement is parallel to the upper chord. Two or three rows of metal assembly frames are connected to the metal bottom plate. The upper chord is a steel pipe, a steel section or other metal rod structure. Four or six convex ribs are arranged on the metal bottom plate, and the web reinforcement is welded to the convex rib. The spacing between the metal composite frames on the metal base plate is not less than 250mm, that is, the spacing between the center lines of the two upper chords is greater than 250mm. The width of the metal base plate is 500mm to 900mm. The angle between the web reinforcement and the metal base plate is 60° to 90°. At least one or one section of steel bar is attached to the upper part or both sides of the upper chord. The distance between the two side reinforcements of the metal composite frame is in the range of 80mm to 130mm. The distance between the two closest side reinforcements on adjacent metal composite frames is 170mm to 200mm. The upper chord is a long round tube. The upper chord is a round steel tube or other polygonal steel tube. The upper chord is a steel tube with a trapezoidal cross section, and the web reinforcement is connected to both sides of the length direction of the upper chord, and the web reinforcement is arranged parallel to the inclined surfaces on both sides of the trapezoidal steel tube. The steel tube is filled with hard fillers. The upper chord is an H-shaped steel, a channel steel or an angle steel. The groove of the steel section is filled with hard fillers. The hard filler in the groove of the steel section is concrete or mortar, or steel bars are placed in the concrete or mortar. The upper chord is a metal rod structure of a combination of steel bars and steel bars, a combination of steel bars and steel pipes, a combination of steel bars and steel sections, and a combination of steel pipes and steel pipes. The upper part of the continuous bending of the web reinforcement is an arc segment reinforcement. The upper part of the continuous bending of the web reinforcement is a flat segment reinforcement. The side reinforcement is located at the lower part of the inner side of the web reinforcement. The distance between the side reinforcement and the upper top surface of the metal bottom plate is not less than 10mm and not more than 30mm. Both ends of the web reinforcement in the length direction are vertical reinforcements. There are at least one outer hoop reinforcement at both ends of the metal assembly frame, and the outer hoop reinforcement is connected to the upper chord, side reinforcement, and metal bottom plate of the metal assembly frame. The outer hoop reinforcement is a steel bar or a steel belt. There are at least one trapezoidal reinforcement at both ends of the metal assembly frame, and the trapezoidal reinforcement is connected to the lower part of the upper chord and the metal bottom plate of the metal assembly frame. The trapezoidal reinforcement is a steel bar or a steel belt. The two ends of the metal assembly frame have at least one pair of oblique rods, which are respectively connected to the lower part of the upper chord of the metal assembly frame, the metal bottom plate or the convex ribs. A connecting rod is arranged between the oblique rods.At least one set of reinforcement mechanism is arranged between the two sides of the floor deck in the length direction and the metal bottom plate, and the reinforcement mechanism includes vertically arranged vertical ribs and horizontally arranged transverse ribs, wherein the upper end of the vertical ribs is welded and fixed to the upper chord, the lower end of the vertical ribs is welded and fixed to the metal bottom plate, the two ends of the transverse ribs are welded and fixed to the side ribs on both sides respectively, and the vertical ribs and the transverse ribs are vertically welded and connected. At least one structure of an outer hoop reinforcement, a trapezoidal reinforcement, a pair of diagonal rods, and vertical ribs is installed at the middle position of the metal assembly frame. The two ends of the flat section steel bar in the length direction are fixedly welded to the convex ribs by spot welding. The two ends of the flat section steel bar in the length direction are inflection points, and the flat section between the two inflection points is welded to the convex ribs of the metal bottom plate by pressure resistance welding. The metal bottom plate is provided with a plurality of first convex ribs, the first convex ribs are formed by bending the metal bottom plate into an M shape, and the middle position where the M-shaped convex rib is bent downward is an arc plate, and the bottom of the flat section steel bar is welded and fixed to the first convex rib. The metal bottom plate is provided with a plurality of second ribs, which are formed by bending the metal bottom plate into an M shape, and the middle position of the M-shaped rib is an arc plate, and the two ends of the M-shaped rib are flat plates, and the bottom of the flat steel bar is welded and fixed to the second rib. The metal bottom plate is provided with a plurality of third ribs, which are formed by bending the metal bottom plate into a T shape and extruding in the vertical direction, and the flat steel bar is welded and fixed to the third rib. The top of the third rib is bent into an arc shape toward the metal bottom plate. The third rib is inclined toward the top of the web rib welded thereon. A first connecting hook is provided on one side of the metal bottom plate, and a second connecting hook matching the first connecting hook is provided on the other side of the metal bottom plate, and the second connecting hook is connected to the first connecting hook. A folding edge is provided on the side of the metal bottom plate in the length direction. The floor decking can be spliced ​​for use, and the metal metal bottom plates of adjacent floor decking plates are connected by nesting, curling, and bending to form a folding edge or a curling edge. At least one connecting rod is fixedly connected between the upper chords of the floor decking plates at adjacent positions on the metal bottom plate, and the connecting rod is arranged horizontally relative to the metal bottom plate. A decorative layer is provided at the bottom of the metal bottom plate. The ratio of the height of the upper chord to the width of the upper chord is in the range of 1:3-1:2, the ratio of the width of the upper chord to the distance between the two side ribs in the metal assembly frame is in the range of 1:3.5-1:1.5, and the ratio of the wall thickness of the steel pipe used as the upper chord to the diameter of the web rib is in the range of 1:8-1:4.A method for manufacturing a floor deck includes the following steps: ① loading raw materials for manufacturing the upper chord and the web reinforcement of the metal composite frame: the metal rods of the upper chord are loaded into a material bin for unloading, and two round coils of raw materials for the web reinforcement are loaded into the material bin for straightening and unloading; ② forming the metal composite frame: the metal rods of the upper chord loaded into the material bin are unloaded to a designated work station by power or gravity, and the raw materials of the web reinforcement are continuously bent and formed from the material bin for straightening and unloading and positioned with the upper chord, and the length matches the upper chord, and the web reinforcement is welded on the upper chord; ③ forming the metal bottom plate: the steel plate coil is The material is rotated out of the rack, flattened, rolled to form ribs and folded edges, and calibrated and positioned; ④ Assembly of the metal assembly frame and the metal base plate: the metal assembly frame is suspended downward from the positioned metal base plate, and the lower part of the web is guided and positioned on the upper part of the ribs. A welding machine is used to weld the bottom of the web ribs to the top surface of the ribs on the metal base plate; ⑤ Installation of accessories: The reinforcements at the ends of the metal assembly frame and other positions are installed in place and welded and fixed; ⑥ Offline stacking: The finished floor decking is removed from the production line and stacked and arranged in sequence. The upper chord is a steel pipe. When the metal assembly frame is formed, the upper part of the web ribs is welded to the side of the upper chord of the steel pipe. The welding point can be point welding or linear welding. In step ①, two round coils of the raw materials of the side ribs are loaded into the silo for straightening and discharging. When the metal assembly frame is made in step ②, the side ribs are welded to the inside of the web ribs. When the metal assembly frame and the metal base plate are assembled in step ④, the welding torch head of the arc welding is used to weld the web ribs to the metal base plate, and the bottom of the web ribs and the top surface of the convex ribs are welded together through no less than one welding point. When the metal assembly frame and the metal base plate are assembled in step ④, resistance welding is used, and the resistance welding electrode is directed downward from the outside of the side ribs to press and melt the bottom of the web ribs and the top surface of the convex ribs together. After step ⑤, the finished floor decking needs to be flipped over to face the bottom up, and the decorative panel needs to be fixed on the bottom surface of the floor decking, and then flipped back to the original position for subsequent offline stacking.

[0005] The positive effects of the present invention are as follows: the floor deck described in the present invention has a bottom where the web reinforcement in the combined frame is continuously bent without transverse bending, is simple to manufacture, uses less materials, and has a more stable connection with the bottom plate. The combined frame directly transmits force to the metal bottom plate and bears force together with the metal bottom plate, giving full play to the material properties of the combined frame and the metal bottom plate, and the rigidity of the overall structure is stronger. The upper chord adopts a steel pipe, steel section or other metal rod structure, which can not only improve the strength of the structure, but also save steel, with better economy and stronger strength, rigidity and overall bearing capacity. Side reinforcement can be provided on the side of the web reinforcement according to engineering needs, and it works together with the bottom plate. It can meet the structural construction requirements of the steel bars in the floor deck, and can not only be used in combination with a metal bottom plate of the metal bottom plate type, but also can be used for floor decks with protective layer requirements. Compared with traditional truss floor decks, the present invention can reduce the amount of steel used by 8-15%, and the rigidity can be increased by about 10%. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural diagram of the floor deck; Figure 2 It is a structural diagram of the existing truss; Figure 3 It is the main view of the floor decking; Figure 4 yes Figure 3 Left view of Figure 5 Schematic diagram of the upper chord using H-shaped steel in the metal modular frame; Figure 6 It is a schematic diagram of a metal composite frame in which the upper end of the web reinforcement is continuously bent and the upper end is a flat section of reinforcement; Figure 7 It is a schematic diagram of the structure in which the upper chord of the metal composite frame adopts an elliptical steel tube; Figure 8 is a schematic diagram of a structure in which a first convex rib is arranged on a metal bottom plate; Fig. 9 It is a schematic diagram of a structure in which a second convex rib is arranged on a metal bottom plate; Fig.10 It is a schematic diagram of the structure in which the third rib is arranged on the metal bottom plate; Fig.11 is a partial enlarged view of the first rib; Fig.12 is a partial enlarged view of the second convex rib; Fig.13 is a partial enlarged view of the third rib; Fig.14 is a second structural embodiment of the third convex rib; Fig.15 is a third structural embodiment of the third convex rib; Fig.16 It is a schematic diagram of a structure in which connecting hooks are arranged on both sides of a metal bottom plate; Fig.17 It is a schematic diagram of a structure in which a curling edge is arranged on a metal bottom plate; Fig.18 It is a schematic diagram of setting another structural curling edge on the metal base plate; Fig.19 It is a schematic diagram of setting the third structural curling edge on the metal base plate; Fig. 20 It is a schematic diagram of setting the fourth structural curling edge on the metal base plate; Fig.21 It is a structural schematic diagram of a decorative layer provided at the bottom of a metal base plate; Fig. 22 It is a schematic diagram of the structure in which the upper chord of a metal composite frame is a round tube; Fig.23 It is a structural schematic diagram of vertical reinforcements arranged at the ends of the web reinforcement in the length direction; Fig.24It is a structural schematic diagram of two sets of reinforcement mechanisms arranged between the two ends of the metal assembly frame in the length direction and the metal bottom plate; Fig.25 It is a structural schematic diagram of a group of reinforcing mechanisms arranged between the two ends of the metal assembly frame in the length direction and the metal bottom plate; Fig.26 It is a schematic diagram of a structure in which an arc-shaped bend is arranged at the lower part of the web reinforcement and is welded to the convex rib on the metal bottom plate; Fig. 27 It is a schematic diagram of a structure in which another structural form of third ribs is arranged on a metal bottom plate; Fig.28 It is a structural schematic diagram of a connection rod provided between the upper chords of adjacent floor decking plates; Fig.29 This is a schematic diagram of the structure where the channel steel is installed on top of the web reinforcement as the upper chord; Fig.30 This is a schematic diagram of the structure where the angle steel is installed between the web reinforcements as the upper chord; Fig.31 This is a schematic diagram of the structure where the angle steel is installed on top of the web reinforcement as the upper chord; Fig.32 It is a structural diagram in which the upper chord is made of a trapezoidal cross-section steel tube and is located between the web reinforcements on both sides; Fig.33 It is a structural diagram of the upper chord using a trapezoidal cross-section steel tube and located on top of the web reinforcement on both sides; Fig.34 It is a schematic diagram of the structure in which the upper chord is made of a rectangular cross-section steel tube and is located between the web reinforcements on both sides; Fig.35 It is a schematic diagram of the structure in which the upper chord is made of rectangular cross-section steel pipe and is located on top of the web reinforcement on both sides; Fig.36 It is a schematic diagram of the structure in which the upper chord is made of an oblong cross-section steel tube and is located on top of the web reinforcement on both sides; Fig.37 yes Fig.36 Side view of the middle structure; Fig.38 It is a schematic diagram of welding the web reinforcement and the metal base plate together by using resistance welding; Fig.39 It is a schematic diagram of welding the web reinforcement and the metal base plate together using arc welding; Fig.40 It is a schematic diagram of the additional reinforcement in the upper part of the upper chord; Fig.41 This is a schematic diagram of additional reinforcement on both sides of the upper chord; Fig.42 It is a schematic diagram of an outer sleeve reinforcement member provided at the end of a metal assembly frame; Fig.43 It is a schematic diagram of a trapezoidal reinforcement member provided at the end of a metal assembly frame; Fig.44 It is a schematic diagram of the oblique rods and connecting rods arranged at the ends of the metal assembly frame; Fig.45 yes Fig.44 Side view of the middle structure; Fig.46 It is a schematic diagram of a trapezoidal reinforcement member arranged in the middle of a metal assembly frame; Fig.47 It is the preferred embodiment of the present invention. DETAILED DESCRIPTION

[0007] A floor decking plate according to the present invention, such as Figure 1 As shown in --47, it includes a metal base plate 7, on which are connected at least one row of metal assembly frames, each of which includes an upper chord 1, and web reinforcement 2 is connected on both sides or the bottom in the length direction of the upper chord 1, each web reinforcement 2 is made by continuously bending a steel bar, and a plurality of convex ribs are provided on the metal base plate 7, each of which is arranged parallel to the upper chord 1, and the bottom of the continuous bending of the web reinforcement 2 is a straight section of a flat steel bar 3 that is not turned outward, and the flat steel bar 3 is parallel to the length direction of the upper chord 1, and the flat steel bar 3 is welded and fixed on the convex rib.

[0008] The bottom position of the continuous bending of the web reinforcement 2 can be optionally set to a flat section steel bar 3, and the flat section steel bar 3 is parallel to the length direction of the upper chord 1. The side reinforcement 4 is connected to the inner side 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 web reinforcements 2 on both sides.

[0009] The flat steel bar 3 is simple to manufacture and uses less material. It also strengthens the connection between the bottom of the web rib 2 and the rib, making the connection with the bottom plate more direct and firm, and the rigidity of the overall structure is stronger. The side rib 4 is combined with the metal bottom plate 7 and the convex rib to form a bottom tensile zone with a higher bearing capacity. The metal bottom plate 7 can be connected to two or three rows of metal assembly frames.

[0010] The metal composite frame, the metal bottom plate 7 and the convex ribs on the metal bottom plate 7 form a combined horizontal structure. The upper chord 1 is compressed, the metal bottom plate 7 and the side ribs 4 are tensile, and the upper chord 1 and the metal bottom plate 7 are connected by the web ribs 2. The component can bear the load independently. When used as a floor deck, steel bars and support steel bars can be arranged at the upper and lower parts, and then concrete is poured to form a floor. Before pouring concrete or during construction, the floor deck bears the construction load, and the floor structure is formed after the concrete solidifies and reaches the design strength.

[0011] Furthermore, the upper chord 1 may be a steel pipe, a steel section or other metal rod structure, such as Figure 5As shown, the steel section can be an H-shaped steel, or other structures such as channel steel and angle steel. The upper chord 1 can be a round steel pipe, a long round pipe or a polygonal steel pipe. The steel pipe can be filled with a hard filler, wherein the hard filler can be an existing cement mortar or concrete, which 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 a polygonal cross-section such as an ellipse, rectangle, trapezoid, etc. The upper chord 1 adopts a steel pipe, steel section or other metal rod structure, which can not only improve the strength of the structure, but also save the amount of steel, with better economy and stronger strength, stiffness and overall bearing capacity.

[0012] Furthermore, four or six convex ribs may be provided on the metal bottom plate 7, and the web ribs 2 may be welded to the convex ribs.

[0013] The new wide-body structure of the metal composite frame can increase the bearing capacity of the metal bottom plate 7 compared with the traditional trusses and effectively reduce the number of trusses.

[0014] Since the upper chord 1 of the floor deck of the present invention is made of steel pipe or steel section, the steel consumption is reduced and the outer contour of the rod is increased, so that the slenderness ratio of the upper chord 1 is greatly reduced, and the anti-instability and pressure bearing capacity of the upper chord 1 are improved. The lower part of the floor deck is directly tensile by the side ribs 4 and the bottom metal plate, thereby enhancing the tensile resistance of the floor deck. Therefore, the present invention increases the spacing of the trusses and improves the rigidity compared with the traditional floor deck. The traditional floor deck needs to place three trusses within a width of about 600mm. The present invention can exceed the force bearing performance of the traditional truss floor deck by placing two trusses, thereby saving materials.

[0015] Furthermore, the spacing between the metal composite frames on the metal bottom plate 7 can be no less than 250 mm, that is, the centerline spacing between the two upper chords 1 is greater than 250 mm. The bearing capacity of the metal composite frame is improved, and the tensile bearing capacity of the metal bottom plate 7 is exerted, and the spacing between the trusses can be increased. The spacing of the traditional floor deck trusses is within 200 mm, and the spacing of the present invention is greater than 250 mm, which can surpass the stress-bearing performance of the traditional trusses.

[0016] Furthermore, the width of the metal bottom plate 7 can be 500 mm to 900 mm. The metal bottom plate 7 of the above width can be used to store two or three metal assembly racks in reverse, so as to ensure the construction efficiency and control the weight within the operable range of the workers, so as to facilitate the storage of the floor decking in one front and one back.

[0017] Furthermore, the angle between the web reinforcement 2 and the metal bottom plate 7 can be 60° to 90°. The larger the angle, the better the force transmission effect, but the smaller the area of ​​the metal bottom plate 7 connected thereto, the more trusses are required on the metal bottom plate 7. After the upper chord 1 adopts steel pipes, the angle between the web reinforcement 2 and the metal bottom plate 7 can be increased compared with traditional steel bars, thereby improving the bearing capacity, and the area of ​​the metal bottom plate 7 connected thereto is not reduced.

[0018] The use of the wider structure can make the overall structure more stable, disperse the force to various positions of the floor deck, and effectively improve the rigidity and force performance of the floor deck. At the same time, the strength of the overall structure is not damaged, and the height of the structure can be reduced, that is, the thickness of the floor can be reduced while maintaining the strength, thereby saving materials.

[0019] Furthermore, at least one or one section of steel bar may be added to the upper part or both sides of the upper chord 1. When applied to the span beam, it can resist the negative bending moment of the span beam under short-term or long-term working conditions.

[0020] Furthermore, the distance between two side ribs 4 of the metal assembly frame may be in the range of 80 mm to 130 mm. The distance between two side ribs 4 closest to each other on adjacent metal assembly frames is in the range of 170 mm to 200 mm.

[0021] Furthermore, the upper chord 1 can be a steel tube with a trapezoidal cross section, and the web ribs 2 are connected to both sides of the length direction of the upper chord 1, and the web ribs 2 are arranged parallel to the inclined surfaces on both sides of the trapezoidal steel tube. The two oblique sides of the trapezoidal steel tube are parallel to the corresponding web ribs 2 on both sides, so that the angle of the web ribs 2 is not easy to deviate, the welding is sufficient, and the strength is high.

[0022] Furthermore, the upper chord 1 may be an H-shaped steel, a channel steel or an angle steel, and the groove of the steel may be filled with a hard filler, the hard filler in the groove of the steel is concrete or mortar, or steel bars are placed in the concrete or mortar.

[0023] Furthermore, the upper chord 1 can also be a metal rod structure of a combination of steel bars and steel bars, a combination of steel bars and steel pipes, a combination of steel bars and steel sections, or a combination of steel pipes and steel pipes. The upper chord 1 is welded together by a combination of other metal rod structures such as steel pipes, steel bars, and steel sections, which can effectively improve the strength of the entire upper chord 1, save steel usage, and ensure the performance of the entire metal composite frame.

[0024] Furthermore, the upper positions of the continuously bent web ribs 2 can all be arc-segment ribs 5 , and the arc-segment ribs 5 are fixedly welded on both sides of the upper chord 1 .

[0025] Furthermore, the upper part of the continuously bent web 2 can be flat steel bars 3, and the flat steel bars 3 are fixedly welded on both sides of the upper chord 1. The upper and lower parts of the continuously bent web 2 are flat steel bars 3, which is convenient for unified bending processing, and the web 2 does not need to distinguish between the upper and lower ends when it is installed with the upper chord 1, which is conducive to improving the processing and manufacturing efficiency of the combined frame. The fixed connection method between the web 2 and the upper chord 1 can be contact welding, vertex welding or multi-spot welding, as long as the web 2 can be fixedly connected on both sides of the upper chord 1.

[0026] Furthermore, the side ribs 4 may be located at the lower inner side of the web ribs 2 , and the distance between the side ribs 4 and the upper top surface of the metal bottom plate 7 is not less than 10 mm and not more than 30 mm, so as to meet the protective layer thickness requirement of the side ribs 4 .

[0027] Furthermore, if Fig.23 As shown, both ends of the web ribs 2 in the length direction can be vertical ribs. The arrangement of the vertical ribs can effectively improve the tensile bending and shearing resistance of the ends of the metal assembly frame in the length direction.

[0028] Furthermore, at both ends of the metal assembly frame, there may be at least one outer hoop reinforcement member, which is connected to the upper chord 1, the side ribs 4, and the metal bottom plate 7 of the metal assembly frame, and the outer hoop reinforcement member is a steel bar or a steel belt. The outer hoop reinforcement member strengthens the connection between the metal assembly frame and the end of the metal bottom plate 7 to form a bottom tensioning structure, which can improve the tensile bearing capacity of the metal bottom plate 7.

[0029] Furthermore, at both ends of the metal assembly frame, there may be at least one trapezoidal reinforcement member, which is connected to the lower part of the upper chord 1 of the metal assembly frame and the metal bottom plate 7, and the trapezoidal reinforcement member is a steel bar or a steel belt. The trapezoidal reinforcement member strengthens the connection between the metal assembly frame and the end of the metal bottom plate 7 to form a bottom tensioning structure, which can improve the tensile bearing capacity of the metal bottom plate 7 and also enhance the shear resistance.

[0030] Furthermore, at both ends of the metal assembly frame, there may be at least one pair of oblique rods 18 , which are respectively connected to the lower part of the upper chord 1 of the metal assembly frame, the metal bottom plate 7 or the convex ribs, and connecting rods 19 are provided between the oblique rods 18 .

[0031] Furthermore, at least one set of reinforcing mechanisms can be arranged between the two sides of the floor deck in the length direction and the metal bottom plate 7, and the reinforcing mechanisms include vertically arranged vertical ribs 14 and horizontally arranged transverse ribs 15, wherein the upper end of the vertical ribs 14 is welded and fixed to the upper chord 1, the lower end of the vertical ribs 14 is welded and fixed to the metal bottom plate 7, and the two ends of the transverse ribs 15 are respectively welded and fixed to the side ribs 4 on both sides, and the vertical ribs 14 and the transverse ribs 15 are vertically welded and connected. The arrangement of the above structure can increase the overall strength and tensile and shear resistance when a crossbeam is arranged at the bottom of the metal composite frame.

[0032] Furthermore, at least one structure selected from the group consisting of an outer hoop reinforcement, a trapezoidal reinforcement, a pair of diagonal rods 18, and vertical ribs 14 can be installed at least at one location in the middle of the metal assembly frame. This structure is used when the floor deck crosses the beam and is arranged at the corresponding position on the beam so that the floor deck can bear the negative bending moment and shear force of this working condition. After the floor deck is provided with reinforcements at the ends and the middle, the bottom plate and the metal assembly frame can form a structure similar to a string structure, giving full play to the tensile strength of the bottom plate and increasing the bearing capacity.

[0033] The fixed connection between the flat steel bar 3 and the metal bottom plate 7 can be that both ends of the flat steel bar 3 in the length direction are spot welded to form welding points and fixedly welded to the convex rib. Alternatively, the bottom of the flat steel bar 3 is fixed to the convex rib by resistance welding to form a linear weld. The two ends of the flat steel bar 3 in the length direction are inflection points, and the flat section between the two inflection points is welded to the convex rib of the metal bottom plate 7 by pressure resistance welding.

[0034] Furthermore, in order to improve the connection strength between the flat steel bar 3 and the metal bottom plate 7, as Figure 8 As shown, the metal bottom plate 7 may be provided with a plurality of first convex ribs 8, the first convex ribs 8 are formed by bending the metal bottom plate 7 into an M shape, and the middle position of the M-shaped convex ribs bent downward is an arc plate, and the flat steel bar 3 is welded and fixed on the first convex ribs 8. The first convex ribs 8 may be formed by extrusion or stamping to form convex ribs on the metal bottom plate 7. The metal bottom plate 7 and the convex ribs forming process may also be completed by using a complete set of cold-bending forming production lines.

[0035] Furthermore, if Fig. 9 As shown, the metal bottom plate 7 may be provided with a plurality of second convex ribs 9, which are formed by bending the metal bottom plate 7 into an M shape, and the middle position of the M-shaped convex ribs bent downward is an arc plate, and both ends of the M-shaped convex ribs bent upward are flat plates, and the flat steel bars 3 are welded and fixed between two adjacent convex ribs of the second convex ribs 9. The second convex ribs 9 may be formed by extrusion or stamping, so that the metal bottom plate 7 forms a convex rib structure, so as to facilitate the welding and fixing of the flat steel bars 3 on the upper side of the convex ribs. The metal bottom plate 7 and the convex ribs forming process may also be completed by using a complete set of cold-bending forming production lines.

[0036] Furthermore, if Fig.10 As shown, the metal bottom plate 7 may be provided with a plurality of third convex ribs 16, which are formed by bending the metal bottom plate 7 into a T-shape and extruding in the vertical direction, and the flat steel bar 3 is welded and fixed on the third convex rib 16. The third convex rib 16 may be extruded or stamped. The third convex rib 16 is composed of three layers of metal bottom plates, which can effectively avoid welding through the convex ribs during the welding connection with the flat steel bar 3, thereby improving the strength and stability of the overall device. The metal bottom plate 7 and the convex rib forming process can also be completed using a complete set of cold bending forming production lines.

[0037] Furthermore, if Fig.14 As shown, the top of the third convex rib 16 can be bent into an arc shape toward the metal bottom plate 7, wherein the top is arranged in an arc shape, which is convenient for placing the flat steel bar 3 and forming a positioning, and is conducive to the subsequent welding and fixing operation. The metal bottom plate 7 and the convex rib forming process can also be completed using a complete set of cold bending forming production lines.

[0038] Furthermore, the third convex rib 16 is inclined toward the top of the web rib welded thereon. The pressure bearing direction of the inclined convex rib is consistent with the force transmission direction of the web bar, which can further improve the stability and overall rigidity between the web bar and the bottom plate.

[0039] The convex ribs of the above structure are formed by stacking three layers of steel plates, which is equivalent to a layer of bottom reinforcement, further strengthening the tensile strength, working in conjunction with the side reinforcement 4 and the metal bottom plate 7, increasing the tensile strength and direct force transmission, increasing the tensile strength of the lower part of the structure, and to a certain extent increasing the bearing capacity of the plate. In addition, it effectively avoids welding through the convex ribs during the welding connection with the flat section steel bars 3, ensuring that the anti-rust protective layer of the bottom plate under the convex ribs is not damaged by welding, and ensuring the durability of the structure.

[0040] Furthermore, in order to facilitate the combined splicing between floor decking plates, Fig.16 As shown, one side of the metal bottom plate 7 may be provided with a first connection hook 10, and the other side of the metal bottom plate 7 may be provided with a second connection hook 11 that matches the first connection hook 10, and the second connection hook 11 is connected to the first connection hook 10. Fig.17 and Fig.18 As shown, the floor decking panels can be spliced ​​and used, and the metal base plates 7 of adjacent floor decking panels are connected by nesting, curling, and bending to form folded edges or curled edges 12, wherein the curled edges 12 that match each other can be curled 90 degrees, 180 degrees, or 360 degrees, and the adjacent metal plates are plugged into each other, and the matching curled edges 12 can also be pre-connected and fixed at the opening position by rivets or welding points.

[0041] Furthermore, in order to improve the rigidity of the ends of the metal assembly frame in the length direction, the sides of the metal base plate 7 in the length direction can be provided with folded edges. The provision of folded edges can not only strengthen the rigidity of the metal base plate 7, but also can be used to bend or curl the floor decking plates together when splicing and connecting them.

[0042] Furthermore, if Fig.28 As shown, at least one connecting rod 17 can be connected and fixed between the upper chords 1 of the floor decks at adjacent positions on the metal bottom plate 7, and the connecting rod 17 is arranged horizontally relative to the metal bottom plate 7. The arrangement of the connecting rod 17 can increase the stability of the adjacent floor decks on the metal bottom plate 7, and at the same time can provide the compression resistance of the overall floor deck.

[0043] Furthermore, if Fig.21 As shown, the bottom of the metal bottom plate 7 may be provided with a decorative layer 13, which is suitable for floor decking that has a protective layer requirement and can also be used in combination as a decorative plate.

[0044] Furthermore, if Fig.26As shown, the continuously bent bottom of the web rib 2 can also be arranged in an arc shape, and the lower inflection point of the bottom of the web rib 2 can be directly welded and fixed to the metal bottom plate 7 or the convex rib of the metal bottom plate 7.

[0045] The metal composite frame is a load-bearing component. The upper chord 1 and the lower longitudinal reinforcement are connected together through the web reinforcement 2. The upper part is compressed. The lower part is tensile. There needs to be a more reasonable configuration relationship between them to achieve excellent results. The upper chord 1 of the metal composite frame is a force-concentrated part in the entire structure. Its width and height directly affect the size and economy of the bearing capacity. The steel pipe is welded to the web reinforcement 2 through the side wall. The force of the upper chord 1 is transmitted to the web through their connection. The coordination between the steel pipe wall and the steel bar is related to the force transmission performance and safety. We found an excellent configuration relationship through research experiments.

[0046] The configuration relationship can be described as follows: the ratio of the height of the upper chord 1 to the width of the upper chord 1 is preferably in the range of 1:3-1:2, the ratio of the width of the upper chord 1 to the distance between the two side ribs 4 in the metal assembly frame is preferably in the range of 1:3.5-1:1.5, and the ratio of the wall thickness of the steel pipe used as the upper chord 1 to the diameter of the web rib 2 is preferably in the range of 1:8-1:4. Fig.47 As shown, the centerline spacing of the two upper chords 1 is greater than 250 mm, the distance between the two side ribs 4 of the metal assembly frame is in the range of 80 mm to 130 mm, the distance between the two closest side ribs 4 on adjacent metal assembly frames is 170 mm to 200 mm, and the width of the metal bottom plate 7 is 500 mm to 700 mm.

[0047] A method for manufacturing a floor deck comprises the following steps: ① loading raw materials for manufacturing an upper chord 1 and a web rib 2 of a metal assembly frame: loading the metal rod of the upper chord 1 into a material bin for unloading, and loading two round coils of raw materials for the web rib 2 into a material bin for straightening and unloading; ② Forming of metal assembly frame: The metal rods of the upper chord 1 loaded into the silo are unloaded to the designated workstation by power or gravity, and the raw materials of the web ribs 2 are discharged from the silo to be straightened and continuously bent and formed and positioned on the upper chord 1. The length matches that of the upper chord 1, and the web ribs 2 are welded to the upper chord 1; ③ Forming of the metal bottom plate 7: the steel plate coil is rotated out of the material rack, flattened, rolled to form ribs and folded edges, and calibrated and positioned; ④ Assembly and forming of the metal assembly frame and the metal bottom plate 7: The metal assembly frame is suspended downward from the positioned metal bottom plate 7, the lower part of the web bar is guided and positioned on the upper part of the convex rib, and a welding machine is used to weld the bottom of the web rib 2 and the top surface of the convex rib on the metal bottom plate 7 together; ⑤Install accessories: install the reinforcements at the ends of the metal assembly frame and other positions in place and weld them in place; ⑥ Off-line stacking: The finished floor decking panels are taken off the production line and stacked in sequence.

[0048] Furthermore, the upper chord 1 may be a steel pipe. When the metal assembly frame is manufactured, the upper portion of the web ribs 2 is welded to the side of the upper chord 1 of the steel pipe. The welding position may be a point welding or a linear welding.

[0049] Furthermore, in step ①, two round coils of the raw material of the side rib 4 are loaded into the silo to be straightened and discharged, and when the metal assembly frame is manufactured in step ②, the side rib 4 can be welded to the inner side of the web rib 2. When the metal assembly frame and the metal bottom plate 7 are assembled in step ④, the web rib 2 and the metal bottom plate 7 are welded together using the welding torch head of the arc welding, and the bottom of the web rib 2 and the top surface of the convex rib are welded together through at least one welding point.

[0050] Furthermore, when the metal assembly frame and the metal bottom plate 7 are assembled in step ④, resistance welding is used, and the resistance welding electrode is directed downward from the outside of the side rib 4 to press and melt the bottom of the web rib 2 and the top surface of the convex rib together.

[0051] Furthermore, after step ⑤, the finished floor decking plate can be turned over to face the bottom upward, the decorative plate can be fixed on the bottom surface of the floor decking plate, and then turned back to its original position for subsequent offline stacking.

[0052] When the side ribs 4 are located inside the web ribs 2, resistance welding can be used because there is no obstruction, and the resistance welding electrode can be vertically pressed downward to melt and weld the bottom of the web ribs 2 and the top surface of the convex ribs together. Alternatively, the welding torch head of the arc welding can be tilted downward to weld the bottom of the web ribs 2 and the top surface of the convex ribs together through at least one welding point.

[0053] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. A floor deck, characterized in that: The invention comprises a metal bottom plate (7), on which at least one row of metal assembly frames are connected, each of which comprises an upper chord (1), and webs (2) are connected on both sides or the bottom in the length direction of the upper chord (1), each of which is made by continuously bending a steel bar, and the lower part of the webs (2) is not turned outward, and a plurality of convex ribs are arranged on the metal bottom plate (7), each of which is arranged parallel to the upper chord (1), and the bottom of the continuously bent webs (2) is welded and fixed to the convex ribs.

2. A floor decking plate according to claim 1, characterized in that: The bottom of the continuously bent web reinforcement (2) is a straight section of a flat section steel bar (3) that does not turn outward. The flat section steel bar (3) is parallel to the length direction of the upper chord (1). The flat section steel bar (3) is welded and fixed on the convex rib.

3. A floor decking plate according to claim 1, characterized in that: The inner side of the abdominal muscle (2) is connected with a side muscle (4), and the side muscle (4) is parallel to the upper chord (1).

4. A floor decking plate according to claim 1, characterized in that: Two or three rows of metal assembly frames are connected to the metal bottom plate (7).

5. A floor decking plate according to claim 1, characterized in that: The upper chord (1) is a steel pipe, steel section or other metal rod structure.

6. A floor deck according to claim 1, characterized in that: Four or six convex ribs are provided on the metal bottom plate (7), and the web ribs (2) are welded to the convex ribs.

7. A floor deck according to claim 1, characterized in that: The spacing between the metal assembly frames on the metal bottom plate (7) is not less than 250 mm, that is, the spacing between the center lines of the two upper chords (1) is greater than 250 mm.

8. A floor deck according to claim 1, characterized in that: The width of the metal bottom plate (7) is 500 mm to 900 mm.

9. A floor decking plate according to claim 1, characterized in that: The included angle between the web ribs (2) and the metal bottom plate (7) is 60° to 90°.

10. A floor decking plate according to claim 1, characterized in that: At least one steel bar or one section of steel bar is attached to the upper part or both sides of the upper chord (1).

11. A floor decking plate according to claim 3, characterized in that: The distance between the two side ribs (4) of the metal assembly frame is in the range of 80 mm to 130 mm.

12. A floor decking plate according to claim 3, characterized in that: The distance between the two closest side ribs (4) on adjacent metal assembly frames is 170 mm to 200 mm.

13. A floor decking plate according to claim 5, characterized in that: The upper chord (1) is a long round tube.

14. A floor decking plate according to claim 5, characterized in that: The upper chord (1) is a round steel tube or other polygonal steel tube.

15. A floor decking plate according to claim 5, characterized in that: The upper chord (1) is a steel tube with a trapezoidal cross section, and the web reinforcement (2) is connected to both sides of the upper chord (1) in the length direction, and the web reinforcement (2) is arranged parallel to the inclined surfaces on both sides of the trapezoidal steel tube.

16. A floor decking plate according to claim 5, characterized in that: The steel pipe is filled with hard filler.

17. A floor decking plate according to claim 5, characterized in that: The upper chord (1) is an H-shaped steel, a channel steel or an angle steel.

18. A floor decking plate according to claim 5, characterized in that: The groove of the steel section is filled with a hard filler.

19. A floor decking plate according to claim 18, characterized in that: The hard filler in the groove of the steel section is concrete or mortar, or steel bars are placed in the concrete or mortar.

20. The floor decking according to claim 1, characterized in that: The upper chord (1) is a metal rod structure of a combination of steel bars and steel bars, a combination of steel bars and steel pipes, a combination of steel bars and section steel, or a combination of steel pipes and steel pipes.

21. A floor decking plate according to claim 1, characterized in that: The upper parts of the continuously bent web ribs (2) are all arc-segment ribs (5).

22. A floor decking plate according to claim 1, characterized in that: The upper part of the continuously bent web reinforcement (2) is all flat steel bars (3).

23. A floor decking plate according to claim 3, characterized in that: The side ribs (4) are located at the lower part of the inner side of the abdominal ribs (2).

24. A floor decking plate according to claim 3, characterized in that: The distance between the side ribs (4) and the upper surface of the metal bottom plate (7) is not less than 10 mm and not more than 30 mm.

25. The floor decking plate according to claim 1, characterized in that: Both ends of the web reinforcement (2) in the length direction are vertical reinforcements.

26. A floor decking plate according to claim 3, characterized in that: There is at least one outer hoop reinforcement member at both ends of the metal assembly frame, and the outer hoop reinforcement member is connected to the upper chord (1), the side ribs (4), and the metal bottom plate (7) of the metal assembly frame. The outer hoop reinforcement member is a steel bar or a steel belt.

27. A floor decking plate according to claim 1, characterized in that: There is at least one trapezoidal reinforcement member at both ends of the metal assembly frame, the trapezoidal reinforcement member is connected to the lower part of the upper chord (1) of the metal assembly frame and the metal bottom plate (7), and the trapezoidal reinforcement member is a steel bar or a steel belt.

28. The floor decking plate according to claim 1, characterized in that: The two ends of the metal assembly frame are provided with at least one pair of oblique rods (18), and the oblique rods (18) are respectively connected to the lower part of the upper chord (1) of the metal assembly frame, the metal bottom plate (7) or the convex ribs.

29. A floor decking plate according to claim 28, characterized in that: A connecting rod (19) is provided between the oblique rods (18).

30. A floor decking plate according to claim 3, characterized in that: At least one set of reinforcing mechanisms is disposed between the metal bottom plate (7) and the two sides of the floor deck in the length direction, the reinforcing mechanisms comprising vertically arranged vertical ribs (14) and horizontally arranged transverse ribs (15), wherein the upper ends of the vertical ribs (14) are welded and fixed to the upper chord (1), the lower ends of the vertical ribs (14) are welded and fixed to the metal bottom plate (7), the two ends of the transverse ribs (15) are respectively welded and fixed to the side ribs (4) on both sides, and the vertical ribs (14) and the transverse ribs (15) are vertically welded and connected.

31. A floor deck according to any one of claims 26, 27, 28 and 30, characterized in that: At least one structure selected from the group consisting of an outer hoop reinforcement, a trapezoidal reinforcement, a pair of diagonal rods (18), and vertical ribs (14) is installed at a position in the middle of the metal assembly frame.

32. A floor decking plate according to claim 2, characterized in that: Both ends of the flat steel bar (3) in the length direction are fixedly welded to the convex rib by spot welding.

33. A floor decking plate according to claim 2, characterized in that: The two ends of the flat steel bar (3) in the length direction are inflection points, and the flat section between the two inflection points is welded to the convex rib of the metal bottom plate (7) by pressure resistance welding.

34. A floor decking plate according to claim 2, characterized in that: The metal bottom plate (7) is provided with a plurality of first convex ribs (8), wherein the first convex ribs (8) are formed by bending the metal bottom plate (7) into an M shape, and the middle position where the M-shaped convex ribs are bent downward is an arc plate, and the bottom of the flat steel bar (3) is welded and fixed to the first convex ribs (8).

35. A floor decking plate according to claim 2, characterized in that: The metal bottom plate (7) is provided with a plurality of second convex ribs (9), the second convex ribs (9) being the metal bottom plate (7) bent into an M shape, wherein the middle position of the M-shaped convex rib bent downward is an arc plate, and both ends of the M-shaped convex rib bent upward are flat plates, and the bottom of the flat section steel bar (3) is welded and fixed to the second convex rib (9).

36. A floor decking plate according to claim 2, characterized in that: The metal bottom plate (7) is provided with a plurality of third convex ribs (16), wherein the third convex ribs (16) are formed by bending the metal bottom plate (7) into a T-shape and extruding the metal bottom plate (7) in the vertical direction, and the flat steel bars (3) are welded and fixed to the third convex ribs (16).

37. A floor decking plate according to claim 36, characterized in that: The top of the third convex rib (16) is bent into an arc shape towards the metal bottom plate (7).

38. A floor decking plate according to claim 37, characterized in that: A floor decking plate according to claim 37, characterized in that: the third convex rib (16) is inclined toward the top end of the web reinforcement welded thereon.

39. A floor decking plate according to claim 1, characterized in that: A first connecting hook (10) is provided on one side of the metal bottom plate (7), and a second connecting hook (11) matching with the first connecting hook (10) is provided on the other side of the metal bottom plate (7), wherein the second connecting hook (11) is connected to the first connecting hook (10).

40. A floor decking plate according to claim 1, characterized in that: The side of the metal bottom plate (7) in the length direction is provided with a folded edge.

41. A floor decking plate according to claim 1, characterized in that: The floor decking plates can be spliced ​​for use, and the metal base plates (7) of adjacent floor decking plates are connected by nesting, curling, bending to form folded edges or rolled edges (12).

42. A floor decking plate according to claim 1, characterized in that: At least one connecting rod (17) is connected and fixed between the upper chords (1) of the floor decking plates at adjacent positions on the metal bottom plate (7), and the connecting rod (17) is arranged horizontally relative to the metal bottom plate (7).

43. A floor decking plate according to claim 1, characterized in that: A decorative layer (13) is provided at the bottom of the metal bottom plate (7).

44. A floor decking plate according to claim 1, characterized in that: The ratio of the height of the upper chord (1) to the width of the upper chord (1) is in the range of 1:3-1:

2.

45. A floor decking plate according to claim 3, characterized in that: The ratio of the width of the upper chord (1) to the distance between the two side ribs (4) in the metal assembly frame is in the range of 1:3.5-1:1.

5.

46. ​​A floor decking plate according to claim 5, characterized in that: The ratio of the wall thickness of the steel pipe used as the upper chord (1) to the diameter of the web reinforcement (2) is in the range of 1:8-1:

4.

47. A method for manufacturing a floor deck, characterized in that: The method comprises the following steps: ① loading raw materials for making the upper chord (1) and the web rib (2) of the metal assembly frame: loading the metal rod of the upper chord (1) into a material bin for unloading, and loading two round coils of raw materials for the web rib (2) into a material bin for straightening and unloading; ② Forming of the metal assembly frame: the metal rods of the upper chord (1) loaded into the silo are fed to the designated workstation by power or gravity, the raw materials of the web ribs (2) are discharged from the silo to be straightened, continuously bent and formed, and positioned with the upper chord (1), the length of which matches that of the upper chord (1), and the web ribs (2) are welded to the upper chord (1); ③ Forming of the metal base plate (7): the steel plate coil is rotated out of the material rack, flattened, rolled to form ribs and folded edges, and calibrated and positioned; ④ Assembly and forming of the metal assembly frame and the metal bottom plate (7): the metal assembly frame is suspended downward from the positioned metal bottom plate (7), the lower part of the web bar is guided and positioned on the upper part of the convex rib, and a welding machine is used to weld the bottom of the web rib (2) and the top surface of the convex rib on the metal bottom plate (7); ⑤Install accessories: install the reinforcements at the ends of the metal assembly frame and other positions in place and weld them in place; ⑥ Off-line stacking: The finished floor decking panels are taken off the production line and stacked in sequence.

48. A method for manufacturing a floor deck according to claim 47, characterized in that: The upper chord (1) is a steel pipe. When the metal assembly frame is manufactured, the upper part of the web rib (2) is welded to the side of the upper chord (1) of the steel pipe. The welding point can be point welding or linear welding.

49. A method for manufacturing a floor deck according to claim 47, characterized in that: In step ①, two round coils of raw materials for the side ribs (4) are loaded into a silo to be straightened and discharged. When the metal assembly frame is manufactured in step ②, the side ribs (4) are welded to the inner side of the web ribs (2).

50. A method for manufacturing a floor deck according to claim 47, characterized in that: When the metal assembly frame and the metal bottom plate (7) are assembled and formed in step ④, the web rib (2) and the metal bottom plate (7) are welded together using an arc welding torch head, and the bottom of the web rib (2) and the top surface of the convex rib are welded together through at least one welding point.

51. A method for manufacturing a floor deck according to claim 47, characterized in that: When the metal assembly frame and the metal bottom plate (7) are assembled and formed in step ④, resistance welding is used, and the resistance welding electrode is directed downward from the outside of the side ribs (4) to press and melt the bottom of the web ribs (2) and the top surface of the convex ribs together.

52. A method for manufacturing a floor deck according to claim 47, characterized in that: After step ⑤, the finished floor decking plate needs to be turned over to face the bottom upward, the decorative panel needs to be fixed on the bottom surface of the floor decking plate, and then turned back to its original position for subsequent offline stacking.

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