Form-removal-free steel bar truss floor support plate

Abstract

The utility model discloses a formwork-removal-free steel bar truss floor support plate which comprises a bottom formwork, a plurality of self-tapping screws are fixedly connected to the top wall of the bottom formwork, binding wires are fixedly connected to the upper portions of the outer walls of the self-tapping screws, and lower chord steel bars are fixedly connected to the top ends of the interiors of the binding wires. The left sides and the right sides of the bottom ends of the multiple lower chord steel bars are connected with support horizontal steel bars in a clamped mode, iron wire nets and glass fiber nets are arranged between the multiple support horizontal steel bars and the adjacent bottom die, and binding wires penetrate through the iron wire nets and the glass fiber nets. According to the floor support plate, the steel bar truss structure formed at the top of the horizontal steel bar of the support is fixed with the self-tapping screws and the bottom die through the binding wires, and the iron gauze and the glass fiber net are poured and fixed through the concrete, so that when the floor support plate bears pressure, the force can be uniformly dispersed to a larger area, and the transverse bearing capacity and the stability of the floor support plate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of floor decking, in particular to a formwork-free steel bar truss floor decking. Background Art

[0002] The floor decking is made of galvanized steel plates that are cold-bent by roller rolling. Its cross-section is V-shaped, U-shaped, trapezoidal or similar waveforms. The floor decking can be used as a formwork during the construction phase to bear the weight of the concrete and the construction load. After the concrete is poured, the floor decking is combined with the concrete without the need to remove the formwork, saving the time and cost of formwork disassembly and installation.

[0003] Floor decking is mainly used in high-rise and super high-rise buildings. It has high strength and rigidity and can withstand loads in various construction stages, including the flow pressure during concrete pouring and the weight of construction workers and equipment, ensuring the stability of the structure during construction. In high-rise and super high-rise buildings, it ensures the stability of the building under wind loads and earthquakes. At the same time, it has a fast construction speed and can meet the requirements of rapid construction of high-rise buildings.

[0004] Existing steel truss floor decks consist solely of a base formwork, upper chord reinforcement, web members, and lower chord reinforcement, lacking additional horizontal support. This can lead to relatively weak lateral stability. When subjected to large horizontal forces, these decks are prone to deformation or displacement, compromising the overall safety of the structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model aims to provide a formwork-free steel truss floor deck. This solves the problem that existing steel truss floor decks lack additional horizontal support and are relatively weak in lateral stability. When subjected to large horizontal forces, they are prone to deformation or displacement, affecting the overall safety of the structure. The specific technical solution is as follows:

[0006] A formwork-free steel truss floor deck comprises a bottom formwork, a top wall of the bottom formwork being fixedly connected to a plurality of self-tapping screws, the upper portions of the outer walls of the self-tapping screws being fixedly connected to tie wires, the inner top ends of the tie wires being fixedly connected to lower chord steel bars, the left and right sides of the bottom ends of the lower chord steel bars being engaged with support horizontal steel bars, a wire mesh and a fiberglass mesh being arranged between the support horizontal steel bars and the bottom formwork, the tie wires penetrating the wire mesh and the fiberglass mesh;

[0007] The bottom of the support horizontal steel bar is attached to the top wall of the wire mesh, the middle part of the support horizontal steel bar is fixedly connected to the support vertical steel bar, the top ends of the support vertical steel bars are fixedly connected to the upper chord steel bars, the front and rear sides of the upper chord steel bars are provided with web steel bars, the front side concave part of the web steel bars is attached to the lower chord steel bars, and the plurality of upper chord steel bars and the web steel bars are fixed by a fixing mechanism;

[0008] Concrete is poured on the top of the bottom form.

[0009] As a preferred embodiment: the fixing mechanism includes a back cover, a hinge is fixedly connected to the middle part of the bottom end of the back cover, and the top front end of the hinge is fixedly connected to the front cover, and the adjacent sides of the back cover and the front cover are provided with upper chord engaging grooves, and the inner walls of the two upper chord engaging grooves are provided with web engaging grooves, and the two holes of the front cover are fixedly connected with limiting nuts, and the inner walls of the two limiting nuts are threadedly connected with limiting screws, and the rear ends of the two limiting screws are fixedly connected with fixing bolts, and the two fixing bolts are threadedly connected to the two holes on the front side of the back cover.

[0010] As a preferred embodiment: a plurality of extension plates are equidistantly fixedly connected to the front and rear sides of the bottom mold, the top walls of the plurality of extension plates are fixedly connected to pillars, and the top ends of the plurality of pillars are fixedly connected to the top plates.

[0011] As a preferred embodiment: the plurality of top plates all use a conical structure, and the height of the concrete on the top of the bottom form is higher than the top ends of the plurality of top plates.

[0012] As a preferred embodiment: the front ends of the two limiting screws are fixedly connected with regular hexagonal heads, and the inner walls of the regular hexagonal heads are provided with regular hexagonal grooves.

[0013] As a preferred embodiment: the rear sides of the two regular hexagonal slots are fixedly connected with magnetic sheets, and the magnetic sheets can be magnetically fitted with the top of an existing hand drill.

[0014] As a preferred embodiment: the outer walls of the rear cover and the front cover are both designed to be smooth and symmetrical in shape.

[0015] As a preferred embodiment: a plurality of the front extension plates and a plurality of the rear extension plates are arranged in a staggered manner, and the bottom molds can be fixedly connected side by side through concrete pouring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the steel truss structure formed on the top of the horizontal steel bars of the support is fixed to the self-tapping screws and the bottom formwork by tying wire, and the wire mesh and glass fiber mesh arranged between the horizontal steel bars of the support and the bottom formwork are fixed by pouring concrete, so that when under pressure, the force can be evenly distributed to a larger area, thereby improving the lateral bearing capacity and stability of the floor deck.

[0018] 2. In the present invention, the upper chord reinforcement and the web reinforcement are respectively engaged in the upper chord engagement groove and the web engagement groove by the rear cover and the front cover, and the rear cover and the front cover are fixed by fixing bolts and limit screws, which generate a strong clamping force, so that the upper chord reinforcement and the web reinforcement are firmly fixed in the fixing mechanism, making installation and disassembly relatively convenient, and facilitating adjustment and maintenance when necessary.

[0019] 3. Since the steel truss structure is fixed to the bottom formwork by self-tapping screws, there is no need to wait until the concrete is poured before welding the steel truss. The welded steel truss can be fixed on the bottom membrane in advance, and then the concrete can be poured directly. The poured concrete will further position the steel truss on the bottom formwork, and there is no need to remove the formwork. The operation process is simple and saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the formwork-free steel truss floor deck proposed in the present invention;

[0021] Figure 2 This is a structural diagram of the horizontal steel bars of the formwork-free steel truss floor deck support proposed by the present invention;

[0022] Figure 3 This is a structural diagram of the formwork-free steel truss floor deck fixing mechanism proposed in the present invention;

[0023] Figure 4 This is a cross-sectional view of the formwork-free steel truss floor deck fixing mechanism proposed in the present invention;

[0024] Figure 5 This is a schematic structural diagram of the formwork-free steel truss floor decking wire tie proposed in the present invention.

[0025] In the figure, 1. bottom mold; 2. fixing mechanism; 201. back cover; 202. front cover; 203. hinge; 204. upper chord engaging groove; 205. web engaging groove; 206. limit nut; 207. fixing bolt; 208. limit screw; 3. self-tapping screw; 4. tie wire; 5. fiberglass mesh; 6. wire mesh; 7. horizontal reinforcement of support; 8. lower chord reinforcement; 9. vertical reinforcement of support; 10. upper chord reinforcement; 11. web reinforcement; 12. extension plate; 13. pillar; 14. top plate; 15. regular hexagonal head; 16. regular hexagonal slot; 17. magnetic sheet. DETAILED DESCRIPTION

[0026] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0027] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0028] Example 1

[0029] Reference Figure 1 、 Figure 2 and Figure 5 The utility model provides an embodiment: a steel truss floor decking plate without demoulding, including a bottom formwork 1, a top wall of the bottom formwork 1 is fixedly connected with a plurality of self-tapping screws 3, the upper part of the outer wall of the plurality of self-tapping screws 3 is fixedly connected with a tying wire 4, the inner top of the plurality of tying wires 4 is fixedly connected with a lower chord steel bar 8, the left and right sides of the bottom ends of the plurality of lower chord steel bars 8 are both engaged and connected with support horizontal steel bars 7, a wire mesh 6 and a glass fiber mesh 5 are arranged between the adjacent portions of the plurality of support horizontal steel bars 7 and the bottom formwork 1, and a plurality of tying wires 4 pass through the wire mesh 6 and the glass fiber mesh 5. The bottoms of the multiple support horizontal steel bars 7 are fitted to the top wall of the wire mesh 6. The middle parts of the multiple support horizontal steel bars 7 are fixedly connected to the support vertical steel bars 9. The tops of the multiple support vertical steel bars 9 are fixedly connected to the upper chord steel bars 10. The front and rear sides of the multiple upper chord steel bars 10 are provided with web steel bars 11. The front recesses of the multiple web steel bars 11 are fitted with the multiple lower chord steel bars 8. The multiple upper chord steel bars 10 and the web steel bars 11 are fixed by a fixing mechanism 2. The top of the bottom form 1 is poured with concrete.

[0030] Specifically, the bottom formwork 1 serves as the basic support part of the entire structure. Self-tapping screws 3 are driven into the bottom formwork 1, and the ties 4 are stably connected to the self-tapping screws 3. The ties 4 are used to fix the lower chord reinforcement 8 to ensure that the position of the lower chord reinforcement 8 is accurate. The support horizontal reinforcement 7 is engaged with the left and right sides of the bottom end of the lower chord reinforcement 8 to provide additional support and stability for the lower chord reinforcement 8. The wire mesh 6 and fiberglass mesh 5 arranged between the support horizontal reinforcement 7 and the bottom formwork 1 can, on the one hand, enhance the overall strength of the structure, and on the other hand, prevent problems such as leakage of concrete during pouring. The ties 4 pass through the wire mesh 6 and fiberglass mesh 5 to further strengthen the connectivity of the entire structure. The support vertical reinforcement 9 connects the support horizontal reinforcement 7 and the upper chord reinforcement 10 to form a three-dimensional support structure. The upper chord reinforcement 10 and the web reinforcement 11 are connected through The fixing mechanism 2 is fixed, and the front side depression of the web reinforcement 11 fits with the lower chord reinforcement 8 to form a steel truss structure. This truss structure has high strength and rigidity and can withstand the weight and external load after concrete pouring. When concrete is poured on the top of the bottom formwork 1, the steel truss structure is wrapped in concrete. During the solidification process, the concrete is tightly combined with the reinforcement to form an integral floor structure. The lower chord reinforcement 8, upper chord reinforcement 10, web reinforcement 11, support horizontal reinforcement 7 and support vertical reinforcement 9 jointly bear the deadweight and live load of the floor. The bottom formwork 1 acts as a template during the concrete pouring and solidification process to ensure the accurate shape and size of the floor, so that when under pressure, the force can be evenly distributed to a larger area, thereby improving the lateral bearing capacity and stability of the floor deck.

[0031] Reference Figure 2 、 Figure 3 and Figure 4 The fixing mechanism 2 includes a rear cover 201, a hinge 203 is fixedly connected to the middle of the bottom end of the rear cover 201, and the top front end of the hinge 203 is fixedly connected to the front cover 202. The adjacent sides of the rear cover 201 and the front cover 202 are each provided with an upper chord engaging groove 204, and the inner walls of the two upper chord engaging grooves 204 are each provided with a web engaging groove 205. The two holes in the front cover 202 are both fixedly connected with a limiting nut 206, and the inner walls of the two limiting nuts 206 are both threadedly connected with a limiting screw 208. The rear ends of the two limiting screws 208 are both fixedly connected with a fixing bolt 207, and the two fixing bolts 207 are threadedly connected to the two holes on the front side of the rear cover 201;

[0032] Specifically, in the fixing mechanism 2, the rear cover 201 and the front cover 202 are connected by a hinge 203, so that the front cover 202 can open and close relative to the rear cover 201, and the upper chord meshing groove 204 and the web meshing groove 205 are used to accommodate the upper chord steel bars 10 and the web meshing groove 205 respectively. When the upper chord steel bars 10 and the web meshing groove 205 need to be fixed, the front cover 202 is opened, and the upper chord steel bars 10 and the web meshing groove 205 are placed in the corresponding upper chord meshing groove 204 and the web meshing groove 205, and the front cover 202 is closed. At this time, the upper chord steel bars 10 and the web meshing groove 11 are stably stuck in the meshing groove, and the limiting screw 208 is screwed into it through the limiting nut 206 on the front cover 202, and the rear end of the limiting screw 208 is fixed. The fixing bolt 207 is threadedly connected to the hole on the front side of the rear cover 201. As the limiting screw 208 is screwed in, the fixing bolt 207 gradually approaches the rear cover 201 and is finally tightly screwed into the hole of the rear cover 201. In this process, the fixing bolt 207 and the limiting screw 208 work together to generate a strong clamping force, which tightly fixes the rear cover 201 and the front cover 202 together, so that the upper chord steel bars 10 and the web steel bars 11 are firmly fixed in the fixing mechanism 2 and cannot move or loosen, thereby realizing the fixation of the upper chord steel bars 10 and the web steel bars 11, so that the steel truss floor deck can better withstand various loads. At the same time, installation and disassembly are relatively convenient, which is convenient for adjustment and maintenance when needed.

[0033] Reference Figure 1 and Figure 3 , multiple extension plates 12 are equidistantly fixedly connected to the front and rear sides of the bottom mold 1, the top walls of the multiple extension plates 12 are fixedly connected to pillars 13, and the top ends of the multiple pillars 13 are fixedly connected to top plates 14; the multiple top plates 14 all use a conical structure, and the height of the concrete on the top of the bottom mold 1 is higher than the top ends of the multiple top plates 14; the front ends of the two limit screws 208 are fixedly connected to regular hexagonal heads 15, and the inner wall of the regular hexagonal heads 15 is provided with regular hexagonal grooves 16;

[0034] Specifically, the extension plate 12 is fixed to the front and rear sides of the bottom form 1, providing an installation foundation for the pillar 13. The structural system composed of the top plate 14 on top of the extension plate 12 can play a certain supporting and restricting role in the concrete pouring process, thereby enhancing the stability and integrity of the overall structure of the floor deck. The top plate 14 adopts a conical structure, and the concrete height at the top of the bottom form 1 is higher than the top of the top plate 14, so that when pouring concrete, the top plate 14 can be used as a reference mark to help construction workers determine the pouring height of the concrete and ensure that the thickness of the concrete layer is uniform. The regular hexagonal head 15 and the regular hexagonal groove 16 at the front end of the limiting screw 208 facilitate construction workers to use tools for operation.

[0035] Reference Figure 1 and Figure 3, the rear sides of the two regular hexagonal slots 16 are fixedly connected with magnetic sheets 17, which can be magnetically attached to the top of an existing hand drill; the outer walls of the rear cover 201 and the front cover 202 are both smooth and symmetrical in shape; the multiple front extension plates 12 and the multiple rear extension plates 12 are staggered, and the bottom mold 1 can be fixedly connected side by side through concrete pouring;

[0036] Specifically, by arranging a magnetic sheet 17 on the rear side of the regular hexagonal groove 16, it can be magnetically fitted with the top of an existing electric drill, making it faster and more labor-saving for construction workers to install and remove the fixing mechanism 2, thereby improving construction efficiency. The outer walls of the rear cover 201 and the front cover 202 are both designed to be smooth, which not only reduces the risk of scratches to construction workers during construction and improves construction safety, but also the symmetrical design makes the overall appearance of the floor deck more beautiful. Multiple front extension plates 12 and multiple rear extension plates 12 are staggered, so that the bottom mold 1 can be fixedly connected side by side through concrete pouring, which facilitates the splicing and expansion of the floor deck in large-scale construction and improves construction efficiency and flexibility.

[0037] Working principle: The bottom formwork 1 serves as the basic support part of the entire structure. Self-tapping screws 3 are driven into the bottom formwork 1, and the ties 4 are stably connected to the self-tapping screws 3. The ties 4 are used to fix the lower chord reinforcement 8 to ensure that the position of the lower chord reinforcement 8 is accurate. The support horizontal reinforcement 7 is engaged with the left and right sides of the bottom end of the lower chord reinforcement 8 to provide additional support and stability for the lower chord reinforcement 8. The wire mesh 6 and fiberglass mesh 5 arranged between the support horizontal reinforcement 7 and the bottom formwork 1 can, on the one hand, enhance the overall strength of the structure, and on the other hand, prevent problems such as leakage of concrete during pouring. The ties 4 pass through the wire mesh 6 and fiberglass mesh 5 to further strengthen the connectivity of the entire structure. The support vertical reinforcement 9 connects the support horizontal reinforcement 7 and the upper chord reinforcement 10 to form a vertical The supporting structure of the body, the upper chord steel bars 10 and the web steel bars 11 are fixed by the fixing mechanism 2, and the front side recess of the web steel bars 11 fits with the lower chord steel bars 8 to form a steel truss structure. This truss structure has high strength and rigidity and can withstand the weight and external load after concrete pouring. When concrete is poured on the top of the bottom form 1, the steel truss structure is wrapped in concrete. During the solidification process, the concrete is tightly combined with the steel bars to form an integral floor structure. The lower chord steel bars 8, the upper chord steel bars 10, the web steel bars 11, the support horizontal steel bars 7 and the support vertical steel bars 9 jointly bear the deadweight and live load of the floor. The bottom form 1 acts as a template during the concrete pouring and solidification process to ensure the accurate shape and size of the floor.

[0038] Moreover, in the fixing mechanism 2, the rear cover 201 and the front cover 202 are connected by a hinge 203, so that the front cover 202 can open and close relative to the rear cover 201, and the upper chord meshing groove 204 and the web meshing groove 205 are used to accommodate the upper chord steel bars 10 and the web steel bars 11 respectively. When the upper chord steel bars 10 and the web steel bars 11 need to be fixed, the front cover 202 is opened, the upper chord steel bars 10 and the web steel bars 11 are placed in the corresponding upper chord meshing groove 204 and the web steel bars meshing groove 205, and the front cover 202 is closed. At this time, the upper chord steel bars 10 and the web steel bars 11 are stably stuck in the meshing groove, and the limiting nut 206 on the front cover 202 is used to fix the upper chord steel bars 10 and the web steel bars 11. , screw the limiting screw 208 into it, and the fixing bolt 207 at the rear end of the limiting screw 208 is threadedly connected with the hole on the front side of the rear cover 201. As the limiting screw 208 is screwed in, the fixing bolt 207 gradually approaches the rear cover 201 and is finally tightly screwed into the hole in the rear cover 201. In this process, the fixing bolt 207 and the limiting screw 208 work together to generate a strong clamping force, which tightly fixes the rear cover 201 and the front cover 202 together, so that the upper chord steel bar 10 and the web steel bar 11 are firmly fixed in the fixing mechanism 2 and cannot move or loosen, thereby achieving the fixation of the upper chord steel bar 10 and the web steel bar 11.

[0039] In the description of the present invention, it should be understood that the terms "middle", "length", "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention without creative work should be included in the scope of protection of the present invention.

Claims

1. A steel truss floor decking plate without formwork removal, comprising a bottom formwork (1), characterized in that: The top wall of the bottom mold (1) is fixedly connected with a plurality of self-tapping screws (3), the upper outer walls of the self-tapping screws (3) are fixedly connected with tying wires (4), the inner tops of the tying wires (4) are fixedly connected with lower chord steel bars (8), the left and right sides of the bottom ends of the lower chord steel bars (8) are engaged with support horizontal steel bars (7), a wire mesh (6) and a glass fiber mesh (5) are provided between the support horizontal steel bars (7) and the bottom mold (1), and the tying wires (4) pass through the wire mesh (6) and the glass fiber mesh (5); The bottom of the support horizontal steel bar (7) is attached to the top wall of the wire mesh (6), the middle of the support horizontal steel bar (7) is fixedly connected to the support vertical steel bar (9), the top of the support vertical steel bar (9) is fixedly connected to the upper chord steel bar (10), the front and rear sides of the upper chord steel bar (10) are provided with web steel bars (11), the front side concave part of the web steel bar (11) is attached to the lower chord steel bar (8), and the plurality of upper chord steel bars (10) and the web steel bars (11) are fixed by a fixing mechanism (2); Concrete is poured on the top of the bottom form (1).

2. The formwork-free steel truss floor deck according to claim 1 is characterized in that: The fixing mechanism (2) comprises a rear cover (201), a hinge (203) is fixedly connected to the middle of the bottom end of the rear cover (201), a front end of the top of the hinge (203) is fixedly connected to the front cover (202), an upper chord engagement groove (204) is provided on adjacent sides of the rear cover (201) and the front cover (202), an inner wall of each of the two upper chord engagement grooves (204) is provided with a web engagement groove (205), two holes of the front cover (202) are fixedly connected to limiting nuts (206), the inner walls of the two limiting nuts (206) are threadedly connected to limiting screws (208), the rear ends of the two limiting screws (208) are fixedly connected to fixing bolts (207), and the two fixing bolts (207) are threadedly connected to the two holes on the front side of the rear cover (201).

3. The formwork-free steel truss floor deck according to claim 1 is characterized in that: A plurality of extension plates (12) are fixedly connected to the front and rear sides of the bottom mold (1) at equal distances, the top walls of the plurality of extension plates (12) are fixedly connected to pillars (13), and the top ends of the plurality of pillars (13) are fixedly connected to top plates (14).

4. The formwork-free steel truss floor deck according to claim 3 is characterized in that: The plurality of top plates (14) all use a conical structure, and the height of the concrete on the top of the bottom form (1) is higher than the top ends of the plurality of top plates (14).

5. The formwork-free steel truss floor deck according to claim 2 is characterized in that: The front ends of the two limiting screws (208) are fixedly connected to a regular hexagonal head (15), and the inner wall of the regular hexagonal head (15) is provided with a regular hexagonal groove (16).

6. The formwork-free steel truss floor deck according to claim 5, characterized in that: The rear sides of the two regular hexagonal slots (16) are both fixedly connected with magnetic sheets (17), and the magnetic sheets (17) can be magnetically fitted with the top end of an existing hand drill.

7. The formwork-free steel truss floor deck according to claim 2, characterized in that: The outer walls of the rear cover (201) and the front cover (202) are both designed to be smooth and symmetrical in shape.

8. The formwork-free steel truss floor deck according to claim 3 is characterized in that: The plurality of front extension plates (12) and the plurality of rear extension plates (12) are arranged in a staggered manner, and the bottom formwork (1) can be fixedly connected in a front-to-back arrangement by pouring concrete.

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