Pre-buried integrally formed cement fiber truss floor support plate

Abstract

The utility model discloses a pre -buried integral moulding cement fiber truss floor support plate, including bottom plate and truss, bottom plate is high -strength cement fiber board, truss includes upper chord, the lower chord located upper chord both sides and the web bar muscle connected in upper chord and lower chord, and truss is supported in bottom plate through the web bar muscle of both sides, and is fixed through connecting piece, connecting piece includes bolt cylinder and bolt peg of the screw thread connection of matched set, bolt cylinder is pre -buried in bottom plate, and its top head, truss places in bottom plate back, bolt cylinder is clamped in the bottom inside of web bar muscle in truss, and after bolt peg screws into bolt cylinder, the convex ring part of the bottom of the nut part of bolt peg presses down tightly web bar muscle and fixes truss. This fixed mode, convenient fixed installation of truss, and with the clamping of bolt cylinder, the positioning fixed of whole truss is carried out, prevents running, and simultaneously after pouring good upper panel, forms the pull rod effect through bolt peg, and the whole structure is more stable.

Description

Technical Field

[0001] This utility model relates to the field of steel truss floor decking, specifically to a pre-embedded, integrally formed cement fiber truss floor decking. Background Technology

[0002] Truss floor decking is a common type of floor decking used in building structures. It typically consists of a steel truss structure reinforced with steel bars and concrete. It utilizes the mechanical advantages of trusses, combining steel trusses and concrete to provide efficient and stable structural support. Truss floor decking is widely used in modern architecture, especially in multi-story buildings such as industrial buildings, large shopping malls, and residential buildings.

[0003] Truss floor decking typically comprises a base slab and a truss section fixedly installed on top of the base slab. After the truss is installed, concrete is poured on top to form the upper panel. Currently, the assembly method usually involves installing embedded parts in the base slab and then welding the truss to the embedded parts. Therefore, this application provides an alternative method. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a pre-embedded integrated molded cement fiber truss floor deck to solve the problems in the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An embedded, integrally formed cement fiber truss floor deck includes a base plate and a truss. The base plate is a high-strength cement fiber board. The truss includes an upper chord, lower chords on both sides of the upper chord, and web members connecting the upper and lower chords. The truss is supported on the base plate by the web members on both sides and fixed by connectors. The connectors include a bolt sleeve and a bolt nail that can be threaded together. The bottom of the nut portion of the bolt nail is formed with a raised ring. The bolt sleeve is embedded in the base plate, and its top protrudes. After the truss is placed on the base plate, the bolt sleeve is engaged with the bottom inner side of the web members in the truss. After the bolt nail is screwed into the bolt sleeve, the raised ring portion at the bottom of the nut portion of the bolt nail presses down on the web members to fix the truss.

[0006] By adopting the above technical solution, this fixing method achieves several advantages. First, by utilizing the separate structure of the bolt sleeve and bolt nail, a prefabricated fixing method is formed, facilitating the actual fixing and installation of the truss. Second, during truss installation, the bolt sleeve's positioning allows for initial positioning of the entire truss, preventing movement and facilitating subsequent fixing work. Third, after the upper cement fiber concrete panel is poured and formed, the bolts between the base plate and the upper panel act as a tie rod, further enhancing the connection strength between the two and ensuring the overall structural stability of the entire floor deck.

[0007] Optionally, let A be the diameter of the threaded portion of the bolt and B be the diameter of the nut portion of the bolt, then 2A <B<6A。

[0008] By adopting the above technical solution, this bolt with a large nut structure has a larger pre-embedded contact area between the bolt nut and the panel after the upper panel is cast, which can further improve the bolt's tie rod effect.

[0009] Optionally, an expansion panel is welded to the bottom of the bolt cylinder, and the bolt cylinder and the expansion panel form a "⊥" shaped structure.

[0010] By adopting the above technical solution, this "⊥" shaped structure, after the bolts are connected, forms an I-shaped structure with the expansion panel, bolt cylinder, and bolts in the entire connector. This I-shaped structural component can further ensure the tension effect between the bottom plate and the upper cast panel, thereby further improving the structural strength of the entire floor deck.

[0011] Optionally, the top surface of the base plate is formed with grooves.

[0012] By adopting the above technical solution, the adhesion between the base plate and the upper panel can be enhanced by forming grooves on the top surface of the base plate.

[0013] Optionally, the truss is also fixed with longitudinal connecting steel bars, which are horizontally connected in series between the trusses and welded to the upper chord bars in the truss.

[0014] By adopting the above technical solution, longitudinal connecting steel bars are used to connect the trusses on the entire floor deck, so as to connect the linear structure into a surface structure, which further improves the support strength of the internal trusses of the entire floor deck.

[0015] Optionally, the left and right sides of the base plate are respectively formed with a male corner snap plate in the shape of "「" and a female corner snap plate in the shape of "」", and the male corner snap plate and the female corner snap plate can be interlocked when the floor deck is spliced.

[0016] By adopting the above technical solution, the floor decking is connected by interlocking the male and female corner plates during splicing, and then the joint is filled with asphalt after interlocking. This connection method is simple to construct. Furthermore, the staggered overlapping interlocking of the male and female corner plates prevents concrete from easily leaking downwards from this point when the upper panel is poured.

[0017] Optionally, a wire mesh is pre-embedded in the base plate.

[0018] By adopting the above technical solution and using pre-embedded steel wire mesh, the overall structural strength of the base plate can be improved.

[0019] Compared with existing technologies, the beneficial effects of this utility model are as follows: 1. Firstly, the separate structure of the bolt sleeve and bolts creates a prefabricated fixing method, facilitating the actual fixing and installation of the truss. Secondly, during truss installation, the bolt sleeves provide initial positioning of the entire truss, preventing movement and facilitating subsequent fixing. Thirdly, after the upper cement fiber concrete panel is poured and formed, the bolts act as tie rods between the base plate and the upper panel, further enhancing the connection strength and ensuring the overall structural stability of the entire floor deck. 2. The large nut structure of the bolts allows for a larger contact area between the bolt nuts and the pre-embedded panels after the upper panel is cast, which further enhances the tie rod effect of the bolts. 3. After the bolts are connected, the expansion panel, bolt sleeve, and bolts in the entire connector form an I-shaped structure. This I-shaped structure can further ensure the tension effect between the bottom plate and the upper cast panel, thereby further improving the structural strength of the entire floor deck. Attached Figure Description

[0020] Figure 1 This is a front view structural diagram of the pre-embedded integrated molded cement fiber truss floor decking of this application; Figure 2 This is a side view structural diagram of the pre-embedded integrated molded cement fiber truss floor decking of this application; Figure 3 for Figure 1 Enlarged view of section A in the middle; In the diagram: 1. Base plate; 11. Groove; 12. Male corner snap plate; 13. Female corner snap plate; 2. Truss; 21. Top chord reinforcement; 22. Bottom chord reinforcement; 23. Web reinforcement; 3. Connector; 31. Bolt sleeve; 32. Bolt; 33. Raised ring; 34. Expanded panel; 4. Longitudinal connecting reinforcement. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 3 As shown, the pre-embedded integrated cement fiber truss floor deck provided by this utility model includes a base plate 1 and a truss 2 fixedly installed on the base plate 1. The base plate 1 is a high-strength cement fiber board with a steel wire mesh pre-embedded inside, and is integrally cast, serving as a formwork that does not require dismantling. The truss 2 includes an upper chord 21, lower chord 22 located on both sides of the upper chord 21, and web members 23 connecting the upper chord 21 and the lower chord 22. The truss 2 is supported on the base plate 1 by the web members 23 on both sides and fixed by connectors 3.

[0023] Specifically, the connector 3 includes a bolt sleeve 31 and a bolt 32 that can be threaded together, and the bottom of the nut portion of the bolt 32 is formed with a raised ring portion 33. The bolt sleeve 31 is pre-embedded in the top portion of the base plate 1, with its top protruding. After the truss 2 is placed on the base plate 1, the bolt sleeve 31 is engaged with the bottom inner side of the web member 23 in the truss 2. After the bolt 32 is screwed into the bolt sleeve 31, the raised ring portion 33 at the bottom of the nut portion of the bolt 32 presses downward against the web member 23 to fix the truss 2. In other embodiments, the connection between the web member 23 and the bolt sleeve 31, and the connection between the bolt 32 and the bolt sleeve 31, can be welded again to strengthen the connection between the truss 2 and the base plate 1.

[0024] This fixing method has several advantages. First, by utilizing the separate structure of the bolt sleeve 31 and the bolt nail 32, a prefabricated fixing method is formed, facilitating the actual fixing and installation of the truss 2. Second, during the installation of the truss 2, the bolt sleeve 31 can be used to initially position the entire truss 2, preventing it from shifting and facilitating subsequent fixing work. Third, after the upper layer of cement fiber concrete panel is poured and formed, the bolt nail 32 forms a tie rod between the base plate 1 and the upper poured panel, further improving the connection strength between the two and thus ensuring the overall structural stability of the entire floor deck.

[0025] In this embodiment, if the diameter of the screw part of the bolt 32 is set as A, and the diameter of the nut part of the bolt 32 is set as B, then 2A<B<6A, preferably B=4A. With the large nut structure of the bolt 32, after the upper panel is poured, the预埋 contact area between the nut of the bolt 32 and the panel is relatively large, which can further improve the pulling effect of the bolt 32.

[0026] In this embodiment, an expanding plate 34 is welded and fixed to the bottom of the bolt cylinder 31, an "⊥"-shaped structure is formed between the bolt cylinder 31 and the expanding plate 34, and the expanding plate 34 is welded and fixed to the steel mesh inside the bottom plate 1. With this "⊥"-shaped structure, after the bolt 32 is connected, the expanding plate 34, the bolt cylinder 31 and the bolt 32 in the entire connecting member 3 form an I-shaped structure. This I-shaped structural member can further ensure the opposite-pulling effect between the bottom plate 1 and the upper poured panel, so as to further improve the structural strength of the entire floor bearing plate.

[0027] In this embodiment, concave-convex grooves 11 are formed on the top surface of the bottom plate 1, which can enhance the adhesion between the bottom plate and the upper panel. Longitudinal connecting steel bars 4 are also fixed on the trusses 2, and the longitudinal connecting steel bars 4 are horizontally connected in series between the trusses 2 and welded and fixed to the upper chord bars 21 in the trusses 2. The connection between the trusses 2 on the entire floor bearing plate is connected in series through the longitudinal connecting steel bars 4, so that the linear structure is connected into a planar structure, which further improves the supporting strength of the trusses 2 inside the entire floor bearing plate.

[0028] In this embodiment, a male corner snapping part 12 shaped as "「" and a female corner snapping part 13 shaped as "」" are respectively formed on the left and right sides of the bottom plate 1. When the floor bearing plates are spliced, connection is completed by mutually snapping the male corner snapping part 12 and the female corner snapping part 13, and after snapping, asphalt is used for joint filling at this position. This connection method is simple in construction. Meanwhile, after the male corner snapping part 12 and the female corner snapping part 13 are snapped together, a staggered overlapping snapping is formed, with this structure, when the upper panel is subsequently poured, the poured concrete is not easy to leak downward from this position.

[0029] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A pre-embedded, integrally molded cement fiber truss floor deck, characterized in that: The system includes a base plate (1) and a truss (2); the base plate (1) is a high-strength cement fiberboard; the truss (2) includes an upper chord (21), lower chords (22) located on both sides of the upper chord (21), and web members (23) connecting the upper chord (21) and the lower chord (22). The truss (2) is supported on the base plate (1) by the web members (23) on both sides and is fixed by connectors (3); the connectors (3) include bolt sleeves (31) and bolts that can be threadedly connected. The bolt (32) has a convex ring (33) formed at the bottom of the nut portion of the bolt (32), and the bolt cylinder (31) is embedded in the base plate (1) with its top protruding; after the truss (2) is placed on the base plate (1), the bolt cylinder (31) is locked inside the bottom of the web reinforcement (23) in the truss (2), and after the bolt (32) is screwed into the bolt cylinder (31), the convex ring (33) at the bottom of the nut portion of the bolt (32) presses down on the web reinforcement (23) to fix the truss (2).

2. The pre-embedded integrated molded cement fiber truss floor decking according to claim 1, characterized in that: Let the diameter of the threaded part of the bolt (32) be A, and the diameter of the nut part of the bolt (32) be B, then 2A <B<6A。 3. The embedded integrated molded cement fiber truss floor decking according to claim 1, characterized in that: The bottom of the bolt cylinder (31) is welded and fixed with an expansion panel (34), and the bolt cylinder (31) and the expansion panel (34) form a "⊥" shaped structure.

4. The pre-embedded integrated molded cement fiber truss floor decking according to claim 1, characterized in that: The top surface of the base plate (1) is formed with grooves (11).

5. The pre-embedded integrated molded cement fiber truss floor decking according to claim 1, characterized in that: The truss (2) is also fixed with longitudinal connecting steel bars (4), which are horizontally connected in series between the trusses (2) and welded to the upper chord bar (21) in the truss (2).

6. The pre-embedded integrated molded cement fiber truss floor decking according to claim 1, characterized in that: The bottom plate (1) has a male corner buckle plate (12) in the shape of "「" and a female corner buckle plate (13) in the shape of "」" on its left and right sides respectively. When the floor decking is spliced, the male corner buckle plate (12) and the female corner buckle plate (13) can be interlocked with each other.

7. The pre-embedded integrated molded cement fiber truss floor decking according to claim 1, characterized in that: The base plate (1) is pre-embedded with wire mesh.

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