Fabricated fiber reinforced steel bar truss composite plate

Abstract

The utility model provides an assembly type fiber reinforced steel bar truss composition board, which belongs to the technical field of assembly type buildings and comprises a reinforced anti-cracking layer used for placing a steel bar truss and an elastic piece used for fixing and supporting a base angle, and the elastic piece is arranged above the reinforced anti-cracking layer. The steel bar truss is fixedly connected to the upper portion of the reinforced anti-cracking layer through an elastic piece, then concrete is poured to form a bottom plate, and the steel bar truss is firmly fixed in the bottom plate; the elastic piece is only used for pressing and holding the supporting bottom corners of the steel bar truss, the overall occupied area is small, the situation that too much space is occupied, and the effective area for concrete pouring is reduced is avoided, and the height of a formed bottom plate is conveniently controlled in the pouring process at the lower chord steel bars at the overall bottom of the connecting piece. The connecting piece is U-shaped elastic metal, is easy to purchase and manufacture, and is low in cost in practical application.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled buildings, and in particular relates to an assembled fiber-reinforced steel bar truss composite plate. Background Art

[0002] Steel truss floor deck is a kind of building product in which the stress-bearing steel bars in the floor slab are welded into steel trusses in the factory, and the steel trusses are fixedly connected to the bottom formwork to form an integrated bottom formwork and stress-bearing steel bars.

[0003] In the prior art, the connection between steel bars is mostly fixed by connecting parts. For example, the connecting parts for installing steel truss floor decking plates with the authorization announcement number CN209163485U include a ∏-shaped body, a clamping groove, a vertical wall, a fastener, a gasket, a reinforcing rib, a vertical hole and a tightening hole. When in use, the operator needs to insert the fastener through the connection hole reserved in the bottom mold, and then insert the fastener into the inside of the tightening hole. When the gasket of the fastener sleeve is in close contact with the bottom mold, the connection and fixation of the steel truss is completed. Although this structure can realize the fixing of the steel truss above the bottom membrane, it still has certain problems: (1) The fixing part and the ∏-shaped body need to meet a certain height, and the concrete must be higher than the lower line steel bar after pouring, so the height of the bottom plate after forming cannot be controlled, which easily leads to problems such as the bottom plate being too thick; (2) During the installation process of the fixing part and the ∏-shaped body, they need to be aligned one by one, and the entire installation process is relatively inconvenient. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, an assembled fiber-reinforced steel bar truss composite plate is provided.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The utility model proposes an assembled fiber reinforced steel truss composite plate, comprising at least two groups of steel trusses, wherein the steel trusses are formed by connecting an upper chord steel bar, two lower chord steel bars and two side web bars to form a triangular structure, wherein the bottom of the web bar protrudes downward from the lower chord steel bar to form a support bottom angle, and the support bottom angle is located below the lower chord steel bar, and further comprises:

[0007] A reinforced anti-cracking layer, wherein the steel bar truss is placed above the reinforced anti-cracking layer;

[0008] An elastic member for pressing and fixing the bottom corner of the support, wherein the elastic member is arranged above the enhanced anti-cracking layer;

[0009] The bottom plate, the lower part of the steel bar truss and the elastic member are all buried in the bottom plate.

[0010] Preferably, the elastic members are arranged in a row corresponding to the support bottom angles, and the elastic members include an elastic metal fixed above the enhanced anti-cracking layer, and the ends of the elastic metal are tilted downward to press the support bottom angles.

[0011] Preferably, the elastic metal is a U-shaped structure, and the top of the elastic metal is located inside the supporting bottom angle.

[0012] Preferably, the bottommost surface of the support bottom angle is placed above the enhanced anti-cracking layer; and the support bottom angle is tilted upward as a whole.

[0013] Preferably, the elastic metal end is connected to a limit block, and the limit block is located inside the support bottom angle.

[0014] Preferably, a pad is commonly connected between the elastic member and the reinforced anti-cracking layer, and the pad is relatively parallel to the steel bar truss.

[0015] Preferably, two adjacent groups of steel bar trusses are staggered front to back, and the elastic members opposite to each other between the two steel bar trusses are staggered front to back.

[0016] Preferably, a lifting rod is commonly connected above the ends of the elastic members in the same row.

[0017] Preferably, the reinforced anti-cracking layer is a carbon fiber mesh, a plastic fiber cloth or a glass fiber mesh.

[0018] Preferably, the base plate is formed by pouring concrete; the base plate, the lower part of the steel truss, the elastic member and the reinforced anti-cracking layer are all formed by pouring concrete and then fixed.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model is provided with a reinforced anti-cracking layer for placing steel trusses, and an elastic member for pressing and fixing the bottom angle of the steel truss support is provided between each group of steel trusses. When the elastic member fixes the steel trusses, the concrete can be poured to form the bottom plate, thereby achieving the fixation of the bottom plate and the steel trusses. In actual use, the elastic member is only pressed above the bottom angle of the support, and the overall occupied area is small, which is lower than the lower chord steel bar as a whole. During the pouring process, it is easy to control the height of the bottom plate forming, and avoid the problem of the bottom plate being too thick after pouring.

[0021] 2. The elastic part of the utility model is a U-shaped elastic metal, which is relatively common in the market, easy to purchase and manufacture, and has a low overall cost. The elastic metal occupies a small area in the base plate, avoiding the connection parts occupying too much space and reducing the effective area available for concrete pouring, which affects the integrity and safety of the structure.

[0022] 3. The utility model provides pads between the steel trusses, and the pads are located above the reinforced anti-cracking layer. On the one hand, the pads are used to padded the elastic parts so that they can be further bent to more firmly support the bottom angle of the steel anti-cracking layer. On the other hand, the pads can further enhance the stability of the steel anti-cracking layer to form a frame structure, which can provide the bottom plate with better bearing capacity and reduce deformation caused by uneven force.

[0023] 4. In the utility model, a lifting rod is commonly connected above the ends of the elastic members in the same row, and the elastic members in the row can be lifted at one time by the lifting rod, which further facilitates the installation and positioning of the steel bar truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the utility model with a lifting rod.

[0027] Figure 3 yes Figure 2 Half section view of the .

[0028] Figure 4 It is a three-dimensional structural schematic diagram of the bottom plate and the steel bar truss in the utility model.

[0029] Figure 5 yes Figure 4 The main view in .

[0030] Description of reference numerals:

[0031] 1. Strengthen the anti-cracking layer; 2. Steel truss; 21. Upper chord steel bar; 22. Lower chord steel bar; 23. Web reinforcement; 24. Support bottom angle; 3. Elastic part; 31. Elastic metal; 32. Limiting block; 33. Lifting rod; 4. Pad block; 5. Bottom plate; 6. Accommodating cavity; 7. Splicing part. DETAILED DESCRIPTION

[0032] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present utility model, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centrally arranged component at the same time.

[0034] In addition, terms such as "long", "short", "inside", and "outside" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the components or elements referred to must have this specific orientation or operate in a specific orientation structure, and should not be understood as a limitation of the present invention.

[0035] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0036] like Figure 1-5 As shown, this embodiment proposes an assembled fiber-reinforced steel bar truss composite plate, which includes:

[0037] At least two groups of steel trusses 2 are included. The steel trusses 2 are connected by spot welding to form a triangular structure with an upper chord steel bar 21, two lower chord steel bars 22 and web bars 23 on both sides. The bottom of the web bars 23 protrudes downward from the lower chord steel bars 22 to form a support bottom angle 24. The support bottom angle 24 is a U-shaped structure in this embodiment, and the support bottom angle 24 is located below the lower chord steel bars 22. Specifically, the upper chord steel bars 21 are made of steel bars with a diameter of 8 to 14 mm; the lower chord steel bars 22 are made of steel bars with a diameter of 6 to 14 mm; and the web bars 23 are made of steel bars with a diameter of 4.5 to 9 mm.

[0038] It also includes a reinforcement anti-cracking layer 1, and the above-mentioned steel bar truss 2 is placed above the reinforcement anti-cracking layer 1; in this embodiment, the reinforcement anti-cracking layer 1 is a carbon fiber mesh, plastic fiber cloth or glass fiber mesh. The reinforcement anti-cracking layer 1 is arranged in the bottom plate 5, which can further improve the anti-cracking ability of the bottom plate 5 and the ability to withstand construction loads.

[0039] It also includes a bottom plate 5, in which the lower part of the steel truss 2 and the elastic member 3 are all buried; specifically, the bottom plate 5 is formed by pouring concrete of no less than C40 or ultra-high performance concrete, and the thickness of the bottom plate 5 is 25 to 35 mm. The bottom plate 5, the lower part of the steel truss 2, the elastic member 3 and the reinforced anti-cracking layer 1 are all fixed after being formed by concrete pouring.

[0040] In this embodiment, the elastic members 3 are arranged in a row corresponding to the support bottom angles 24, and one elastic member 3 is corresponding to pressing one support bottom angle 24; specifically, the elastic member 3 includes an elastic metal 31 fixed on the top of the reinforced anti-cracking layer 1, and the end of the elastic metal 31 is tilted downward to press the support bottom angle 24. The elastic metal 31 is a U-shaped structure, and the top of the elastic metal 31 is located inside the support bottom angle 24; in the initial state, the state of the elastic metal 31 is a state where the end is tilted downward. Since the elastic metal 31 has elastic deformation recovery ability, the elastic metal 31 is artificially lifted upward. After the steel truss 2 is placed on the reinforced anti-cracking layer 1, the restriction on the elastic metal 31 is released, and the elastic metal 31 is deformed and restored to the initial state. At this time, the end of the elastic metal 31 is pressed and held in the upper middle of the support bottom angle 24, and the positioning of the steel truss 2 is achieved through multiple groups of elastic members 3.

[0041] Furthermore, a pad 4 is commonly connected between the elastic member 3 and the enhanced anti-cracking layer 1. The pad 4 is relatively parallel to the steel truss 2. On the one hand, the pad 4 is used to lift the elastic member 3 so that it can be further bent. On the other hand, it increases the stability of the enhanced anti-cracking layer 1 to form a frame structure, which can provide the base plate 5 with better ability to withstand and reduce deformation caused by uneven force; further, the pad 4 is a hollow steel pipe structure with a through hole on the top of the pad 4 to facilitate the concrete to enter the pad 4 and be fixed into shape.

[0042] The two adjacent groups of steel trusses 2 are staggered front and back, and accordingly, the adjacent supporting bottom angles 24 are also staggered, and the elastic members 3 opposite to each other between the two steel trusses 2 are further staggered front and back. The two groups of opposite elastic members 3 are arranged above the pad 4, and a certain amount of space can be saved by the staggered arrangement.

[0043] Furthermore, a limiting block 32 is connected to the end of the elastic metal 31, and the limiting block 32 is located inside the supporting bottom angle 24; when the elastic metal 31 is pressed above the supporting bottom angle 24, the limiting block 32 is located inside the supporting bottom angle 24. Since the supporting bottom angle 24 is tilted upward, more space is left for placing the limiting block 32. The steel truss 2 is further limited by the force of the limiting block 32 to prevent it from loosening.

[0044] A lifting rod 33 is commonly connected above the ends of the elastic members 3 in the same row, and the elastic members 3 in the row can be lifted at one time by the lifting rod 33, which further facilitates the placement of the steel bar truss 2.

[0045] As another embodiment, the bottom edge of the side of the bottom plate 5 has a chamfer to form an inward-retracted accommodating cavity 6; the shape of the chamfer includes but is not limited to an R-shaped chamfer and an oblique chamfer. In this embodiment, the chamfer is an R-shaped chamfer. The side of the bottom plate 5 has a splicing portion 7 and an accommodating cavity 6. The splicing portion 7 is a planar structure. When two adjacent bottom plates 5 are spliced, the adjacent splicing portions 7 are closely spliced ​​to form a splicing seam; the adjacent accommodating cavities 6 are aligned to form a grouting and leveling area, which is convenient for subsequent leveling.

[0046] The close-jointed joint treatment is convenient for construction. During the construction process, the concrete slurry can fill the gaps in the joints. After a period of concrete pouring, most of the concrete shrinkage has been completed. At this time, modified polymer cement mortar is used for smoothing. The joints treated in this way will have no cracks in the later stage, which greatly improves the overall strength and quality.

[0047] In actual use, two rows of elastic members 3 are lifted in advance by means of the lifting rod 33, and then the steel truss 2 is placed between the two groups of opposite elastic members 3, and then the lower elastic member 3, and the elastic member 3 presses and fixes the group of steel trusses 2, and the above steps are repeated until an appropriate Hangjin truss is installed above the reinforced anti-cracking layer 1; the steel truss 2 and the reinforced anti-cracking layer 1 are placed inside the mold, and concrete is poured into the mold. The concrete is buried in the lower steel bar and formed to form a bottom plate 5.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An assembled fiber reinforced steel truss composite plate, comprising at least two groups of steel trusses (2), wherein the steel trusses (2) are connected by an upper chord steel bar (21), two lower chord steel bars (22) and web bars (23) on both sides to form a triangular structure, wherein the bottom of the web bars (23) protrudes downward from the lower chord steel bars (22) to form a support bottom angle (24), and the support bottom angle (24) is located below the lower chord steel bars (22), characterized in that: Also includes: A reinforced anti-cracking layer (1), wherein the steel bar truss (2) is placed above the reinforced anti-cracking layer (1); An elastic member (3) for pressing and fixing the support bottom angle (24), wherein the elastic member (3) is arranged above the reinforced anti-cracking layer (1); The bottom plate (5), the lower part of the steel bar truss (2) and the elastic member (3) are all buried in the bottom plate (5).

2. The assembled fiber reinforced steel bar truss composite plate according to claim 1 is characterized in that: The elastic members (3) are arranged in a row corresponding to the support bottom angles (24), and the elastic members (3) include an elastic metal (31) fixed above the enhanced anti-cracking layer (1), and the ends of the elastic metal (31) are tilted downward to press the support bottom angles (24).

3. The assembled fiber reinforced steel bar truss composite plate according to claim 2 is characterized in that: The elastic metal (31) is a U-shaped structure, and the top of the elastic metal (31) is located inside the supporting bottom angle (24).

4. The assembled fiber reinforced steel bar truss composite plate according to claim 2, characterized in that: The bottom surface of the support bottom angle (24) is placed above the enhanced anti-cracking layer (1); the support bottom angle (24) is in an upwardly inclined state as a whole.

5. The assembled fiber reinforced steel bar truss composite plate according to claim 2 is characterized in that: The end of the elastic metal (31) is connected to a limit block (32), and the limit block (32) is located inside the support bottom angle (24).

6. The assembled fiber reinforced steel bar truss composite plate according to claim 2, characterized in that: A cushion block (4) is commonly connected between the elastic member (3) and the reinforced anti-cracking layer (1), and the cushion block (4) is relatively parallel to the steel bar truss (2).

7. The assembled fiber reinforced steel bar truss composite plate according to claim 1, characterized in that: Two adjacent groups of steel bar trusses (2) are staggered in front and back, and the elastic members (3) opposite to each other between the two steel bar trusses (2) are staggered in front and back.

8. The assembled fiber reinforced steel bar truss composite plate according to claim 2, characterized in that: A lifting rod (33) is commonly connected above the ends of the elastic members (3) in the same row.

9. The assembled fiber reinforced steel bar truss composite plate according to claim 1, characterized in that: The reinforced anti-cracking layer (1) is a carbon fiber mesh, a plastic fiber cloth or a glass fiber mesh.

10. The assembled fiber reinforced steel bar truss composite plate according to claim 1, characterized in that: The bottom plate (5) is formed by pouring concrete; the bottom plate (5), the lower part of the steel truss (2), the elastic member (3) and the reinforced anti-cracking layer (1) are all formed by pouring concrete and then fixed.

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