Novel steel bar truss floor support plate

Abstract

The utility model discloses a novel steel bar truss floor support plate, which relates to the technical field of floor support plate processing, and comprises a steel bar truss, a carrying piece for carrying the steel bar truss, a rotary fastener for fastening the steel bar truss and the carrying piece, and a concrete layer for wrapping the steel bar truss and the carrying piece, wherein the rotating fastener comprises a U-shaped seat used for being buckled on a lower chord steel bar, the two ends of the U-shaped seat are bent outwards to form blocking parts, and the two blocking parts penetrate through assembling holes in the carrier and are connected with the carrier in a buckled mode. Through the arrangement of the rotary fasteners, the lower chord steel bar of the steel bar truss can be connected with the carrying piece through the rotary fasteners, the specifications of the rotary fasteners are uniform, the fastening acting force applied by the rotary fasteners to all positions of the lower chord steel bar of the steel bar truss and the carrying piece is almost the same, after fastening is completed, the stress of all the fastening positions is balanced, and the fastening effect is good. And the quality problems of cracks or bumps and the like of the floor support plate manufactured by subsequently pouring concrete are solved.

Description

Technical Field

[0001] This utility model relates to the field of floor decking processing technology, specifically to a novel steel truss floor decking. Background Technology

[0002] The steel truss in the prior art can be made of Figures 1-3 To represent, where, Figure 1 This is a top view schematic diagram of the steel truss structure. Figure 2 This is a front view structural diagram of a steel truss. Figure 3 This is a side view of the steel truss structure. Specifically, the steel truss is composed of two web steel bars 101 in the middle, a single upper chord steel bar 102 at the top, and two lower chord steel bars 103 welded together.

[0003] Steel truss floor decks are important horizontal load-bearing components in engineering construction structures. Due to their advantages such as light weight, ease of hoisting, fast construction speed, and significant savings in labor costs and shorter construction periods, they are widely used in engineering practice. Currently, the fabrication of steel truss floor decks is generally as follows: 1) First, the steel truss is placed on a support frame, and then workers use wire to tie the two lower chord steel bars of the steel truss to the support frame; 2) Next, the tied portion is placed in a mold and concrete is poured; 3) After the concrete has solidified, the entire structure consisting of the steel truss, the support frame, and the concrete used to cover the tied portion constitutes the steel truss floor deck.

[0004] However, in the above-mentioned manufacturing process, the connection between the steel truss and the support frame is achieved by workers using wire to tighten it. Due to differences in the tying techniques, number of turns, tension, and angle of the wire by workers with different experience, the connection force at each tightening point of the steel truss and the support frame is easily different. In other words, after the steel truss and the support frame are connected, the stress at each point is different. Consequently, when pouring concrete later, it is easy to cause quality problems such as bulging or cracks in the steel truss floor slab.

[0005] To address these issues, we propose a novel steel truss floor deck. Utility Model Content

[0006] The purpose of this utility model is to solve the problems in the prior art by proposing a new type of steel truss floor deck. During the manufacturing process of this floor deck, the steel truss and the load are quickly fastened together by swivel fasteners. Since the swivel fasteners set at various locations are of the same specification, the force at each fastening point is balanced, ensuring that the floor deck made by subsequent concrete pouring will not have quality problems.

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A novel steel truss floor deck includes a steel truss, a support for the steel truss, a swivel coupler for fastening the steel truss and the support, and a concrete layer for covering the steel truss and the support. The swivel coupler includes a U-shaped seat for fastening onto the lower chord steel bar. Both ends of the U-shaped seat are bent outward to form blocking portions, and both blocking portions pass through the assembly holes on the support and form a snap-fit ​​connection with them.

[0009] As a further embodiment of this utility model: the carrier includes a steel plate mesh with a plurality of assembly holes opened along its length direction, the shape of the assembly holes is set to rectangular, and the distance between the outer ends of the two blocking parts is between the distance between the two wide sides and the distance between the two long sides of the assembly hole, and the U-shaped seat can rotate on the assembly hole until the two blocking parts are misaligned with the assembly hole.

[0010] As a further embodiment of this utility model: the carrier also includes a steel strip fixedly disposed at the bottom of the steel mesh, and a plurality of limiting holes are provided on the steel strip along its length direction, and the plurality of limiting holes are respectively provided in correspondence with a plurality of assembly holes, so that the two blocking parts pass through the assembly holes and limiting holes from top to bottom in sequence and form a snap-fit ​​connection with the limiting holes.

[0011] As a further embodiment of this utility model: the shape of the limiting hole is set to be circular, the sidewall of the limiting hole is recessed inward to form two sets of clearance grooves for the passage of the blocking part, and the two sets of clearance grooves are arranged radially along the limiting hole. The U-shaped seat can rotate on the assembly hole and the limiting hole until the two blocking parts are misaligned with the two sets of clearance grooves.

[0012] As a further embodiment of this utility model, the carrier also includes a locking block, which can be movably disposed on any one of the clearance slots to achieve the blocking of that group of clearance slots.

[0013] As a further embodiment of this utility model: the card block is configured as an I-shaped part, which consists of two parallel horizontal parts and a vertical part for connecting the two horizontal parts, and the vertical part can be inserted into one of the clearance slots.

[0014] As a further embodiment of this utility model: a rectangular through hole is provided on the steel strip along its length direction.

[0015] As a further embodiment of this utility model: the groove size of the U-shaped seat is larger than the diameter of the lower chord steel bar on the steel truss, so that the U-shaped seat can rotate when it is fastened to the lower chord steel bar.

[0016] As a further embodiment of this utility model: the two blocking parts are arranged symmetrically about the U-shaped seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By using swivel couplers, the lower chord steel bars of the steel truss can be connected to the load. Since the specifications of the swivel couplers are uniform, the fastening force applied by multiple swivel couplers to each part is almost equal. After the fastening is completed, the force at each fastening point is balanced, and the floor deck made by subsequent concrete pouring will not have quality problems such as cracks or bulges.

[0019] 2. By setting the swivel fastener as a U-shaped seat and two blocking parts, the two blocking parts can pass through the rectangular assembly hole. Then, the two blocking parts are driven to rotate until they are misaligned with the rectangular assembly hole, thus achieving a locking connection between the steel truss and the load. The locking effect is good.

[0020] 3. By adding steel strips to the base of the steel mesh, the two blocking parts will abut against the bottom of the steel strips when locking the base. The steel strips will bear the force of the abutment, ensuring that the steel mesh will not deform and extending the service life of the base.

[0021] 4. By setting the locking block, after the U-shaped seat and the two sets of clearance slots are staggered, the locking block can be moved to any one of the clearance slots to block that set of clearance slots. Even if the U-shaped seat is rotated in the opposite direction to reset, since one of the clearance slots is blocked, the two blocking parts will still be in contact with the bottom of the steel strip. This ensures that the swivel fastener will tightly and securely connect the steel truss and the load, avoiding the risk of the steel truss and the load becoming loose during subsequent handling or movement. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a top view diagram of a steel truss structure in the prior art;

[0024] Figure 2 This is a front view schematic diagram of a steel truss structure in the prior art;

[0025] Figure 3 This is a side view diagram of a steel truss structure in the prior art;

[0026] Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0027] Figure 5This is a top view of the structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure for removing the concrete layer according to this utility model;

[0029] Figure 7 yes Figure 6 Enlarged structural diagram at point A in the middle;

[0030] Figure 8 This is a top view schematic diagram of the steel strip structure in this utility model;

[0031] Figure 9 This is a top view schematic diagram of the steel mesh structure in this utility model;

[0032] Figure 10 This is a schematic diagram of the assembly structure of the steel mesh and three sets of steel strips in this utility model;

[0033] Figure 11 yes Figure 10 A schematic diagram of the layout structure of the assembly holes and limiting holes in the current state;

[0034] Figure 12 This is a top view of the U-shaped seat fastened to the limiting hole in this utility model;

[0035] Figure 13 This is a front view schematic diagram of the card block structure in this utility model;

[0036] Figure 14 This is a schematic diagram of the assembly structure of the U-shaped seat in this utility model, in which the lower chord steel bar is fastened to the limiting hole.

[0037] In the diagram: 1. Steel truss; 101. Web reinforcement; 102. Top chord reinforcement; 103. Bottom chord reinforcement; 2. Rectangular through hole; 3. Concrete layer; 4. U-shaped seat; 5. Blocking part; 6. Assembly hole; 7. Steel mesh; 8. Steel strip; 9. Limiting hole; 10. Locking block; 1011. Horizontal part; 1012. Vertical part; 11. Clearance groove. Detailed Implementation

[0038] 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 scope of protection of the present utility model.

[0039] like Figures 4-14As shown, a novel steel truss floor deck includes a steel truss 1, a support for the steel truss 1, a swivel coupler for connecting the steel truss 1 and the support, and a concrete layer 3 for covering the steel truss 1 and the support. The swivel coupler for connecting the steel truss 1 and the support is configured as follows: the swivel coupler includes a U-shaped seat 4 for fastening onto the lower chord steel bar 103. Both ends of the U-shaped seat 4 are bent outward to form blocking parts 5. The two blocking parts 5 are arranged symmetrically about the U-shaped seat 4, and both blocking parts 5 pass through the assembly hole 6 on the support and form a snap-fit ​​connection with it. After the snap-fit ​​connection is set, the connecting parts of the steel truss 1 and the support are placed together in the corresponding mold, and then concrete is poured. After the concrete solidifies, the whole consisting of the steel truss 1, the support, and the concrete layer 3 for covering the connection between the two is the steel truss floor deck.

[0040] This utility model utilizes swivel fasteners to snap-fit ​​the lower chord steel bar 103 on the steel truss 1 to the carrier. The multiple swivel fasteners are of the same specification, so that during the snap-fit ​​connection process, the lower chord steel bar 103 and the carrier are connected with uniform force at multiple points. After the connection is completed, the force is balanced at all points, which ensures the quality of the floor deck slab made by subsequent concrete pouring.

[0041] like Figures 6-7 and Figure 9 As shown, the carrier component includes a steel mesh 7 with multiple mounting holes 6 along its length. The mounting holes 6 are rectangular, and the distance between the outer ends of the two blocking parts 5 is between the distance between the two wide sides and the distance between the two long sides of the mounting hole 6. Based on this rectangular mounting hole 6 design, the U-shaped seat 4 can rotate on the mounting hole 6 until the two blocking parts 5 are misaligned with the mounting hole 6. Specifically, the U-shaped seat 4 is fitted onto the lower chord steel bar 103 and driven to move downward until the two blocking parts 5 on the U-shaped seat 4 penetrate the rectangular mounting hole 6. Then, the U-shaped seat 4 is driven to rotate, so that the two blocking parts 5 on the U-shaped seat 4 are misaligned with the rectangular mounting hole 6. That is, the two blocking parts 5 are blocked by the bottom of the steel mesh 7 and cannot move upward. By sequentially performing the above operation on multiple U-shaped seats 4, the connection between the steel truss 1 and the steel mesh 7 can be completed.

[0042] like Figures 7-8As shown above, when the two blocking parts 5 and the mounting holes 6 are misaligned, the two blocking parts 5 abut against the bottom of the steel mesh 7. Since the steel mesh 7 has multiple mesh holes evenly distributed on it, the overall load-bearing capacity of the steel mesh 7 is poor. This abutment can easily cause deformation of the part of the steel mesh 7 that abuts against the blocking parts 5. To solve the above problems, the carrier in this utility model also includes a steel strip 8 fixedly set at the bottom of the steel mesh 7. The steel strip 8 has multiple limiting holes 9 along its length direction, and the multiple limiting holes 9 are respectively set one-to-one with the multiple mounting holes 6, so that the two blocking parts 5 pass through the mounting holes 6 and the limiting holes 9 from top to bottom and form a snap-fit ​​connection with the limiting holes 9. Based on this design of the steel strip 8, the blocking parts 5 will abut against the bottom of the steel strip 8, and the steel strip 8 will bear the force of the abutment of the blocking parts 5, ensuring that the steel mesh 7 will not deform.

[0043] like Figures 11-12 As shown, based on the setting of the limiting hole 9, the shape of the limiting hole 9 is preferably set to circular. The layout structure diagram of the limiting hole 9 and the assembly hole 6 can be obtained from... Figure 11 To illustrate, the sidewall of the limiting hole 9 is recessed inward to form two sets of clearance grooves 11 for the passage of the blocking part 5. The two sets of clearance grooves 11 are arranged radially along the limiting hole 9. The U-shaped seat 4 can rotate on the assembly hole 6 and the limiting hole 9 until the two blocking parts 5 are misaligned with the two sets of clearance grooves 11. Specifically, the U-shaped seat 4 is fitted onto the lower chord steel bar 103 and driven to move downward until the U-shaped seat 4 passes through the assembly hole 6 and the limiting hole 9 in sequence, and the two blocking parts 5 pass through the assembly hole 6 and the two clearance grooves 11 in sequence. Then, the U-shaped seat 4 is driven to rotate until the two blocking parts 5 on the U-shaped seat 4 are misaligned with the two clearance grooves 11, that is, the two blocking parts 5 will be blocked by the bottom of the steel strip 8 and cannot move upward. By performing the above operation on multiple U-shaped seats in sequence, the connection between the steel truss 1 and the steel mesh 7 can be realized.

[0044] like Figure 12 As shown, furthermore, in order to prevent the U-shaped seat 4 from resetting after being misaligned with the two sets of clearance slots 11, the carrier can also include a locking block 10. After the U-shaped seat 4 and the two sets of clearance slots 11 are misaligned, the locking block 10 can be movably set on any one set of clearance slots 11 to block that set of clearance slots 11. Thus, even if the U-shaped seat 4 is rotated in the opposite direction to reset, since one of the clearance slots 11 is blocked, the two blocking parts 5 will still be in contact with the bottom of the steel strip 8. This ensures that the rotating fastener will tightly and securely connect the steel truss 1 and the carrier, avoiding the risk of the steel truss 1 and the carrier becoming loose during subsequent handling or movement.

[0045] It should be noted that when the connection between the steel truss 1 and the carrier is achieved by rotation, it is necessary to ensure that the slot size of the U-shaped seat 4 is larger than the diameter of the lower chord steel bar 103 on the steel truss 1, so that the U-shaped seat 4 can rotate when it is fastened to the lower chord steel bar 103.

[0046] like Figure 13 As shown, preferably, the card block 10 is set as an I-shaped block, which consists of two parallel horizontal parts 1011 and a vertical part 1012 for connecting the two horizontal parts 1011. After the U-shaped seat 4 and the two sets of clearance slots 11 are misaligned, the vertical part 1012 can be inserted into one of the clearance slots 11, thereby blocking the clearance slot 11, so that the two blocking parts 5 cannot be reset and moved out.

[0047] As described above, the carrier consists of steel mesh 7 and steel strips 8. Figure 10 As shown in the figure, a single steel mesh 7 and three steel strips 8 constitute a set of carriers. In actual use, the number of steel mesh 7 and steel strips 8 can be freely adapted and are not limited here. Figure 8 As shown, after the carrier and the steel truss 1 are connected and placed in the corresponding mold, during the process of pouring concrete at the connection between the two, in order to allow the concrete on the steel mesh 7 to vibrate to the bottom of the mold and form a concrete layer 3 covering the connection between the steel truss 1 and the carrier after subsequent solidification, a rectangular through hole 2 can be opened on the steel strip 8 along its length direction. During the concrete pouring process, with vibration, the liquid concrete on the steel mesh 7 can be vibrated to the rectangular through hole 2, and then pass through the rectangular through hole 2 to the bottom of the mold. That is, the concrete will wrap the connection between the carrier and the steel truss 1, and form a concrete layer 3 after solidification.

[0048] It should be noted that the steel mesh 7 used in this embodiment is a perforated metal mesh surface formed by a precision punching and shearing machine in one punching and stretching process. It has the characteristics of uniform mesh, flatness and strong tensile strength. The preferred size of the mesh 7 is 20mm×40mm.

[0049] Preferably, the concrete used is fine aggregate concrete with PVA fiber, the particle size of the coarse aggregate is in the range of 5 mm to 10 mm, the length of the PVA fiber is between 6 mm and 12 mm, and the volume fraction of the fiber internal reference is 0.06 to 0.1%.

[0050] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A novel steel truss floor deck, characterized in that, It includes a steel truss (1), a carrier for supporting the steel truss (1), a swivel fastener for fastening the steel truss (1) and the carrier, and a concrete layer (3) for covering the steel truss (1) and the carrier, wherein: the swivel fastener includes a U-shaped seat (4) for fastening onto the lower chord steel bar (103), both ends of the U-shaped seat (4) are bent outward to form a blocking part (5), and both blocking parts (5) pass through the assembly hole (6) on the carrier and form a snap-fit ​​connection with it.

2. The novel steel truss floor decking according to claim 1, characterized in that, The carrier includes a steel mesh (7) with a plurality of assembly holes (6) along its length. The shape of the assembly holes (6) is set to rectangular, and the distance between the outer ends of the two blocking parts (5) is between the distance between the two wide sides and the distance between the two long sides of the assembly hole (6). The U-shaped seat (4) can rotate on the assembly hole (6) until the two blocking parts (5) are misaligned with the assembly hole (6).

3. The novel steel truss floor decking according to claim 2, characterized in that, The carrier also includes a steel strip (8) fixedly installed at the bottom of the steel mesh (7). The steel strip (8) has multiple limiting holes (9) along its length direction, and the multiple limiting holes (9) are respectively arranged in correspondence with multiple assembly holes (6) so that the two blocking parts (5) pass through the assembly hole (6) and the limiting hole (9) from top to bottom and form a snap-fit ​​connection with the limiting hole (9).

4. A novel steel truss floor decking according to claim 3, characterized in that, The limiting hole (9) is circular in shape, and the sidewall of the limiting hole (9) is recessed inward to form two sets of clearance grooves (11) for the passage of the blocking part (5). The two sets of clearance grooves (11) are arranged radially along the limiting hole (9). The U-shaped seat (4) can rotate on the assembly hole (6) and the limiting hole (9) until the two blocking parts (5) are misaligned with the two sets of clearance grooves (11).

5. A novel steel truss floor decking according to claim 4, characterized in that, The carrier also includes a locking block (10), which can be movably disposed on any one of the clearance slots (11) to block the clearance slot (11).

6. A novel steel truss floor decking according to claim 5, characterized in that, The card block (10) is configured as an I-shaped part, which consists of two parallel horizontal parts (1011) and a vertical part (1012) for connecting the two horizontal parts (1011). The vertical part (1012) can be inserted into one of the clearance slots (11).

7. A novel steel truss floor decking according to any one of claims 3-6, characterized in that, The steel strip (8) has a rectangular through hole (2) along its length.

8. A novel steel truss floor decking according to any one of claims 1-6, characterized in that, The slot size of the U-shaped seat (4) is larger than the diameter of the lower chord steel bar (103) on the steel truss (1) so that the U-shaped seat (4) can rotate when it is fastened to the lower chord steel bar (103).

9. A novel steel truss floor decking according to any one of claims 1-6, characterized in that, The two blocking parts (5) are arranged symmetrically about the U-shaped seat (4).

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