Plane steel bar truss floor support plate

Abstract

The plane steel bar truss floor support plate comprises a steel bar truss, the steel bar truss comprises an upper chord steel bar, a lower chord steel bar and a web member steel bar, the upper chord steel bar and the lower chord steel bar are arranged up and down, and the upper chord steel bar and the lower chord steel bar are connected through the web member steel bar; the web member steel bars form supporting feet on the two sides of the lower chord steel bars respectively. And the supporting legs are embedded in the concrete bottom plate. According to the technical scheme, the steel bar truss comprises the upper chord steel bar, the lower chord steel bar and the web member steel bar, the steel bar truss is simple in structure and low in machining difficulty, it is guaranteed that the plane steel bar truss floor support plate has enough structural strength, meanwhile, the production efficiency of the plane steel bar truss floor support plate is improved, and the production cost is reduced. The steel bars are saved, and waste of steel bar materials is avoided.

Description

Technical Field

[0001] This application relates to the field of building floor decking technology, and in particular to a planar steel truss floor decking. Background Technology

[0002] With the development of construction technology, prefabricated construction has gradually become the main construction method. Compared with the traditional construction industry, prefabricated buildings mainly use prefabricated components for construction, and these prefabricated components have achieved standardization and industrialization, so prefabricated buildings have higher construction efficiency.

[0003] Currently, in the field of prefabricated floor slabs, various types of precast steel truss floor decks are widely used. Among them, there is a type of steel truss floor deck that does not require removal of the bottom membrane. Because its bottom is made of concrete, after the floor slab is poured, finishing work such as applying putty can be carried out directly on the bottom of the slab. The structural strength is guaranteed and the construction efficiency is high. This type of floor deck is being used more and more widely in the construction industry.

[0004] Typically, the steel trusses on steel truss floor slabs are triangular trusses. These steel trusses use two web bars and two bottom chord bars, resulting in a large amount of steel reinforcement. This is a waste of materials for the floor slab structure and increases construction costs. A solution that satisfies the structural requirements of the floor slab while saving on steel reinforcement and reducing unnecessary waste is an urgent problem to be solved. Utility Model Content

[0005] In view of the above problems, this application is made to provide a planar reinforced truss floor deck to solve or at least partially solve the above problems.

[0006] In one embodiment of this application, a planar steel truss floor deck is provided, comprising:

[0007] A steel truss, comprising upper chord steel bars and lower chord steel bars, and web steel bars arranged vertically, wherein the upper chord steel bars and the lower chord steel bars are connected by the web steel bars; the web steel bars form supports on both sides of the lower chord steel bars respectively;

[0008] A concrete base slab, wherein the support legs are embedded in the concrete base slab.

[0009] Optionally, the length of the steel truss is equal to the length of the concrete base slab, and the length of the upper chord reinforcement is equal to or less than the length of the lower chord reinforcement.

[0010] Optionally, the length of the steel truss is greater than the length of the concrete base slab, and the steel truss forms overhangs on both sides of the concrete base slab.

[0011] Optionally, the length of the upper chord reinforcement is greater than the length of the lower chord reinforcement, and the length of the upper chord reinforcement overhanging outward relative to the concrete base slab is greater than the length of the lower chord reinforcement overhanging outward relative to the concrete base slab.

[0012] Optionally, the web reinforcement has multiple inverted V-shaped structures, with the support legs formed between adjacent inverted V-shaped structures. The upper end of the inverted V-shaped structure is connected to the upper chord reinforcement, and the lower end of the inverted V-shaped structure is connected to the lower chord reinforcement.

[0013] Optionally, the two ends of the support leg are respectively connected to the lower side of the inverted V-shaped structure on both sides, and the support leg is one of the following: arc shape, triangle, trapezoid, and square.

[0014] Optionally, the outward extension direction of the support leg is parallel to the surface of the concrete base plate.

[0015] Optionally, the upper chord reinforcement is arranged parallel to the lower chord reinforcement, and the upper chord reinforcement and the lower chord reinforcement may have the same or different diameters.

[0016] Optionally, the steel truss exposed above the concrete base slab is a sheet-like structure.

[0017] Optionally, the steel truss of the sheet-like structure exposed above the concrete base slab is arranged at a first angle to the concrete base slab;

[0018] The first included angle is equal to or less than 90 degrees.

[0019] Optionally, the concrete base slab includes a substrate and a wire mesh;

[0020] The mesh is embedded in the substrate, and the support legs are connected to the mesh.

[0021] Optionally, the concrete base slab further includes a mesh fabric, which is laid on the bottom surface of the concrete base slab.

[0022] In the technical solution provided in the embodiments of this application, the steel truss includes a top chord steel bar, a bottom chord steel bar and a web steel bar. The steel truss structure is simple and easy to process. While ensuring that the planar steel truss floor slab has sufficient structural strength, it is also conducive to improving the production efficiency of the planar steel truss floor slab, saving the amount of steel bars used, and avoiding waste of steel bar materials. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A front view of a planar steel truss floor slab provided in an embodiment of this application;

[0025] Figure 2 A sectional view of a planar steel truss floor slab provided in this application embodiment;

[0026] Figure 3 A front view of a steel truss and steel mesh provided in an embodiment of this application;

[0027] Figure 4 A left view of a steel truss and steel mesh provided for an embodiment of this application;

[0028] Figure 5 This is a structural schematic diagram of a steel truss and steel mesh provided in an embodiment of this application;

[0029] Figure 6 This is a perspective view of a steel truss and steel mesh provided in an embodiment of this application.

[0030] Explanation of the attached drawing numbers:

[0031] 1. Top chord reinforcement 2. Bottom chord reinforcement 3. Web reinforcement 3. Support 31. Concrete base slab 4. Mesh 41. Mesh fabric 42. Substrate 43. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain error range. Furthermore, in the embodiments of this application, "multiple" refers to two or more. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0033] Figure 1 This is a front view of a planar steel truss floor slab provided in an embodiment of this application. Figure 2 A sectional view of a planar reinforced concrete truss floor slab provided as an embodiment of this application. See also... Figure 1 and Figure 2 In one embodiment of this application, a planar steel truss floor deck is provided, which includes a steel truss 10 and a concrete base slab 4.

[0034] The steel truss 10 includes upper chord steel bars 1 and lower chord steel bars 2 arranged vertically, and web steel bars 3. The upper chord steel bars 1 and lower chord steel bars 2 are connected by the web steel bars 3. The web steel bars 3 form supports 31 on both sides of the lower chord steel bars 2, and the supports 31 are embedded in the concrete base slab 4. The web steel bars 3 connect the upper chord steel bars 1 and lower chord steel bars 2 into a whole, and the supports 31 can stably connect the steel truss 10 to the concrete base slab 4.

[0035] The web reinforcement 3 can be multiple or a single bar. For example, when there are multiple web reinforcement bars 3, they are bent into corresponding shapes, and then each web reinforcement bar 3 is connected to the upper chord reinforcement 1 and the lower chord reinforcement 2 respectively. When there is a single web reinforcement bar 3, it is bent into a continuous shape, and then the shape is connected to the upper chord reinforcement 1 and the lower chord reinforcement 2 respectively.

[0036] In the technical solution of this application, the steel truss 10 includes one top chord steel bar 1, one bottom chord steel bar 2, and one web steel bar 3. See also... Figure 2 As shown, viewed from the side, the top chord reinforcement 1, the bottom chord reinforcement 2, and the web reinforcement 3 can be roughly considered to be located on the same plane. Except for the support legs 31, the main shape of the steel truss 10 is a sheet-like planar structure. Compared with other steel truss structures, this planar steel truss structure is simple and easy to manufacture.

[0037] Since the steel truss 10 still has the upper chord steel bar 1 and the lower chord steel bar 2, it has sufficient structural strength. While ensuring that the planar steel truss floor slab has sufficient structural strength, it is also conducive to improving the production efficiency of the planar steel truss floor slab, saving the amount of steel bars used, and avoiding waste of steel bar materials.

[0038] See Figure 1 and Figure 2 In one embodiment provided in this application, the length of the steel truss 10 is equal to the length of the concrete base slab 4. The steel truss 10 spans from one side of the concrete base slab 4 to the other side of the concrete base slab 4. One of the upper chord steel bars 1 and the lower chord steel bars 2 has the same length as the concrete base slab 4, and the end of the steel bar is flush with the side of the concrete base slab 4.

[0039] In the technical solution provided in this application, the lengths of the upper chord steel bar 1 and the lower chord steel bar 2 can be the same or different. For example, see... Figure 1 The length of the upper chord steel bar 1 is equal to the length of the lower chord steel bar 2, and is the same as the length of the concrete base slab 4.

[0040] In another embodiment, the length of the top chord reinforcement 1 is less than the length of the bottom chord reinforcement 2. Viewed from the side of the planar steel truss floor slab, the planar steel truss floor slab has a trapezoidal structure. Of course, the length of the top chord reinforcement 1 can also be greater than the length of the bottom chord reinforcement 2.

[0041] There are several ways to install the planar steel truss floor deck to the building beams. For example, the two ends of the concrete base slab 4 can be directly supported on the building beams. Another example is to support the two ends of the steel truss 10 on the building beams to connect the entire planar steel truss floor deck to the building beams.

[0042] In one embodiment provided in this application, the length of the steel truss 10 is greater than the length of the concrete base slab 4, and the steel truss 10 forms overhangs on both sides of the concrete base slab 4. The overhangs at both ends can be erected on the building beams, thereby suspending the concrete base slab 4 on the building beams. Later, through further concrete pouring, the concrete base slab 4 and the building beams can be connected into a whole.

[0043] Furthermore, when the steel truss 10 forms overhangs at both ends of the concrete base slab 4, the lengths of the upper chord steel bar 1 and the lower chord steel bar 2 can be the same or different. For example, the length of the upper chord steel bar 1 is greater than the length of the lower chord steel bar 2, and the length of the upper chord steel bar 1 overhanging outward relative to the concrete base slab 4 is greater than the length of the lower chord steel bar 2 overhanging outward relative to the concrete base slab 4.

[0044] This structure allows for the installation of planar steel truss floor slabs in some special cases. For example, the planar steel truss floor slabs on both sides of the building beam can be connected by their respective upper chord steel bars 1, which is beneficial to the stability of the entire concrete floor slab structure.

[0045] See Figures 1 to 4 In one embodiment provided in this application, the web reinforcement 3 has multiple inverted V-shaped structures, and a support 31 is formed between adjacent inverted V-shaped structures. The upper end of the inverted V-shaped structure is connected to the upper chord reinforcement 1, and the lower end of the inverted V-shaped structure is connected to the lower chord reinforcement 2.

[0046] The web reinforcement 3 may include one or more. For example, multiple shorter web reinforcements 3 may be connected to the upper chord reinforcement 1 and the lower chord reinforcement 2 respectively. The multiple shorter web reinforcements 3 may be connected to each other to form an inverted V-shaped structure and a support 31. Alternatively, multiple shorter web reinforcements 3 may be connected end to end to form an inverted V-shaped structure and a support 31.

[0047] In practical applications, to improve the processing efficiency of the steel truss 10, the web reinforcement 3 is usually a single, complete steel bar. The web reinforcement 3 is continuously bent to form an inverted V-shaped structure and a support 31. Then, the upper chord reinforcement 1 is welded to the upper side of the web reinforcement 3, and the lower chord reinforcement 2 is welded to the lower side near the support 31, thus forming a complete steel truss 10 structure.

[0048] Furthermore, the two ends of the support leg 31 are respectively connected to the lower side of the inverted V-shaped structure on both sides. There is a support leg 31 between two adjacent inverted V-shaped structures. One end of the support leg 31 is connected to one of the inverted V-shaped structures, and the other end of the support leg 31 is connected to the other inverted V-shaped structure.

[0049] In the technical solution provided in this application, the support leg 31 is mainly used to embed in the concrete base slab 4. It has two main functions: First, when the concrete base slab 4 is not yet solidified, the support leg 31 can provide support to support the steel truss 10 on the unsolidified concrete base slab 4. Second, the support leg 31 can make the connection between the steel truss 10 and the concrete base slab 4 more secure.

[0050] The support leg 31 has various structures, and the structural shape of the support leg 31 includes, but is not limited to: arc shape, triangle shape, trapezoid shape, square shape, etc.

[0051] See Figure 2 and Figure 4 In one embodiment provided in this application, the outward extension direction of the support leg 31 is parallel to the surface of the concrete base slab 4. For example... Figure 2 As shown, when viewed along the cross-sectional direction of the planar steel truss floor slab, the portion of the steel truss 10 exposed above the concrete base slab 4 is vertical relative to the concrete base slab 4, while the extension direction of the supports 31 located on the left and right sides of the exposed portion of the steel truss 10 is parallel to the surface of the concrete base slab 4.

[0052] In another specific embodiment, the extension direction of the support leg 31 can be parallel to the surface of the concrete base plate 4, or it can be inclined relative to the surface of the concrete base plate 4, for example, inclined upward or inclined downward. When the support leg 31 is in an inclined state, the end of the support leg 31 can be exposed outside the concrete base plate 4, or it can still be embedded in the concrete base plate 4.

[0053] See Figure 1 and Figure 3In one embodiment provided in this application, the upper chord reinforcement 1 and the lower chord reinforcement 2 are arranged parallel to each other, and both the upper chord reinforcement 1 and the lower chord reinforcement 2 are parallel to the concrete base slab 4. The lower chord reinforcement 2 is located above the concrete base slab 4, and there is a certain gap between the lower chord reinforcement 2 and the concrete base slab 4. Of course, to meet practical needs, the upper chord reinforcement 1 and the lower chord reinforcement 2 can also be in a non-parallel state.

[0054] Furthermore, in order to facilitate the production and fabrication of the steel truss 10, and at the same time ensure that the steel truss 10 has sufficient structural strength, the diameter of the upper chord steel bar 1 and the lower chord steel bar 2 are the same.

[0055] Of course, in another embodiment, to meet the needs of different buildings, the diameters of the top chord reinforcement 1 and the bottom chord reinforcement 2 can be different. For example, the diameter of the top chord reinforcement 1 is smaller than the diameter of the bottom chord reinforcement 2. Or, the diameter of the top chord reinforcement 1 is larger than the diameter of the bottom chord reinforcement 2.

[0056] See Figure 2 and Figure 4 In one embodiment provided in this application, the steel truss 10 exposed above the concrete base slab 4 is a sheet structure. The upper chord steel bar 1 and the lower chord steel bar 2 can be connected to the same side of the web steel bar 3, or they can be connected to the left and right sides of the web steel bar 3 respectively. Alternatively, the upper chord steel bar 1 can be connected to the upper end of the web steel bar 3, while the lower chord steel bar 2 can be connected to one side of the web steel bar 3.

[0057] Furthermore, the sheet-like steel truss 10 exposed above the concrete base slab 4 can be perpendicular to the concrete base slab 4, or it can be inclined above the concrete base slab 4. Specifically, see... Figure 2 The sheet-like steel truss 10 exposed above the concrete base 4 is set at a first angle to the concrete base 4, and the value of the first angle is in the range of [90 degrees to 20 degrees].

[0058] After concrete is poured on the planar steel truss floor slab, the sheet-like steel truss 10 exposed above the concrete base slab 4 is set at an angle, which can effectively improve the strength of the steel truss 10 and the poured concrete, thus also contributing to the improvement of the overall building floor slab structure strength.

[0059] See Figure 1 , Figure 2 , Figure 5 and Figure 6 In one embodiment provided in this application, the concrete base slab 4 includes a substrate 43 and a mesh 41. The mesh 41 is embedded in the substrate 43, and the support legs 31 are connected to the mesh 41. The material of the mesh 41 includes, but is not limited to, metal, high-strength plastic, and fiberglass.

[0060] The support leg 31 is fastened to the mesh 41. This can prevent the steel truss 10 from shifting before the concrete has solidified, and it can also improve the connection strength between the steel truss 10 and the concrete base slab 4.

[0061] In one specific embodiment, the mesh 41 is a metal mesh 41. When pouring the concrete substrate 43, the metal mesh 41 is first welded to the support leg 31, and then the concrete substrate 43 is poured to form a complete concrete base plate 4.

[0062] Furthermore, the concrete base slab 4 also includes a mesh fabric 42, which is disposed on the bottom surface of the concrete base slab 4. After the concrete is poured, some of the concrete can penetrate into the mesh fabric 42, thereby forming a high-strength concrete structure. The mesh fabric 42 not only enhances the structural strength of the concrete base slab 4, but also prevents the bottom surface of the concrete from peeling off.

[0063] In addition, when the concrete slurry penetrates into the mesh 42, it can form a rough concrete structure on the lower surface of the concrete base 4. When applying putty or other finishing work directly on the bottom surface of the concrete base 4 later, the putty material will adhere more easily to the bottom surface of the concrete base 4.

[0064] The following is a brief introduction to the prefabrication process of the planar steel truss floor deck provided in this application through a specific embodiment.

[0065] First, the top chord steel bar 1, the bottom chord steel bar 2, and the web steel bar 3 are welded together to form a steel truss 10. Then, the metal mesh 41 that needs to be embedded in the concrete base slab 4 is welded to the support 31 of the steel truss 10. Multiple steel trusses 10 can be welded onto one metal mesh 41 at the same time, and the multiple steel trusses 10 are spaced apart in parallel on the metal mesh 41.

[0066] Before pouring the concrete base slab 4, a release agent needs to be applied to the formwork. Then, according to the dimensions of the planar steel truss floor deck slab, the side formwork is erected on the formwork. After the side formwork is erected, fiberglass mesh 42 is laid on the platform. Then, the welded steel truss 10 with wire mesh is installed on the mesh 42. Then, the concrete is mixed and poured. After the concrete is poured, it is vibrated. After the concrete is vibrated, it is roughened and then transferred to the curing kiln for curing. After the curing reaches the required strength, the formwork is demolded, thus completing the production of a planar steel truss floor deck slab.

[0067] In summary, the technical solution provided in this application includes a top chord steel bar, a bottom chord steel bar, and a web steel bar. The steel truss structure is simple and easy to process. While ensuring that the planar steel truss floor slab has sufficient structural strength, it also helps to improve the production efficiency of the planar steel truss floor slab, save the amount of steel bars used, and avoid waste of steel bar materials.

[0068] After concrete is poured onto a reinforced concrete floor slab, the concrete base slab participates in the load-bearing process during the service life, which not only enhances the structural strength of the floor slab but also increases the clear height of the floors. Since the bottom surface of the reinforced concrete floor slab is directly a concrete structure, plastering and other finishing operations can be performed directly on the bottom surface, which is beneficial for subsequent decoration and construction.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A planar reinforced steel truss floor deck, characterized in that, include: A steel truss, comprising upper chord steel bars and lower chord steel bars, and web steel bars arranged vertically, wherein the upper chord steel bars and the lower chord steel bars are connected by the web steel bars; the web steel bars form supports on both sides of the lower chord steel bars respectively; A concrete base slab, wherein the support legs are embedded in the concrete base slab; The steel truss protruding above the concrete base slab is a sheet-like structure, and the sheet-like steel truss protruding above the concrete base slab is set at a first angle to the concrete base slab; the first angle is less than 90 degrees.

2. The planar steel truss floor slab according to claim 1, characterized in that, The length of the steel truss is equal to the length of the concrete base slab, and the length of the upper chord steel bar is equal to or less than the length of the lower chord steel bar.

3. The planar steel truss floor slab according to claim 1, characterized in that, The length of the steel truss is greater than the length of the concrete base slab, and the steel truss forms overhangs on both sides of the concrete base slab.

4. The planar steel truss floor slab according to claim 3, characterized in that, The length of the upper chord reinforcement is greater than the length of the lower chord reinforcement, and the length of the upper chord reinforcement that extends outward relative to the concrete base slab is greater than the length of the lower chord reinforcement that extends outward relative to the concrete base slab.

5. The planar steel truss floor slab according to claim 1, characterized in that, The web reinforcement has multiple inverted V-shaped structures, with the support legs formed between adjacent inverted V-shaped structures. The upper end of the inverted V-shaped structure is connected to the upper chord reinforcement, and the lower end of the inverted V-shaped structure is connected to the lower chord reinforcement.

6. The planar steel truss floor slab according to claim 5, characterized in that, The two ends of the support leg are respectively connected to the lower side of the inverted V-shaped structure on both sides, and the support leg is one of the following shapes: arc, triangle, trapezoid, and square.

7. The planar steel truss floor slab according to any one of claims 1 or 5, characterized in that, The outward extension direction of the support leg is parallel to the surface of the concrete base plate.

8. The planar steel truss floor slab according to claim 1, characterized in that, The upper chord reinforcement is arranged parallel to the lower chord reinforcement, and the upper chord reinforcement and the lower chord reinforcement may have the same or different diameters.

9. The planar steel truss floor slab according to claim 1, characterized in that, The concrete base slab includes a substrate and a wire mesh. The mesh is embedded in the substrate, and the support leg is connected to the mesh.

10. The planar steel truss floor slab according to claim 9, characterized in that, The concrete base slab also includes a mesh fabric, which is laid on the bottom surface of the concrete base slab.

Images