TD slabs, TD slab trusses and mezzanine floors

Abstract

This utility model discloses a TD plate, a TD plate truss, and a mezzanine floor slab, relating to the field of building construction. The TD plate is generally W-shaped, with a trapezoidal arch formed by pressing a base plate at its center line. Two sides of the base plate are bent upwards to form a first support plate and a second support plate perpendicular to the horizontal plane. The top of the first support plate is bent towards the trapezoidal arch to form a first connecting platform, with continuous protrusions at the top. The top surface of the second support plate is bent away from the trapezoidal arch to form a second connecting platform, with continuous recesses at the bottom. The recesses and protrusions are fitted together. It can be directly connected to adjacent TD plates using overlapping and interlocking methods, making connection convenient and quick, eliminating stress concentration in bolted connections, and improving the bending strength of the TD plate.

Description

Technical Field

[0001] This utility model relates to the field of building floor slabs, specifically to TD slabs, TD slab trusses, and mezzanine floor slabs. Background Technology

[0002] With the development of architectural science and the improvement of people's living standards, people have higher requirements for the practicality, functionality and cost of architectural design. For buildings with high floor height, in order to expand the usable area and optimize the decoration design, it is often necessary to add a mezzanine structure, such as LOFT design, to form a duplex structure with two floors.

[0003] Existing LOFT mezzanine floor slabs generally have the following defects: First, they are too thick. The traditional steel plate + concrete structure has a thickness of ≥200mm, which reduces the utilization rate of floor height (e.g., the net height is only 1.9m under a floor height of 4.2m); Second, the connection is weak. The joints of the profiled plates rely on bolts for fastening, which is prone to uneven stiffness.

[0004] Patent CN209603373U discloses a special profiled sheet for LOFT, a mezzanine floor frame and a mezzanine floor. Although the thickness is reduced to 86mm, it still relies on bolt connection, and there is still room for improvement in the bending efficiency of the linear support structure of the trapezoidal truncated pyramid. Utility Model Content

[0005] The purpose of this utility model is to provide a TD plate, TD plate truss and mezzanine floor slab, which can be directly connected to adjacent TD plates by lap joint and interlocking method, which is convenient and quick to connect, and can eliminate stress concentration of bolt connection and improve the bending strength of TD plate.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a TD board, which is W-shaped in general and is formed by pressing a substrate at the center line to form a trapezoidal arch; the two sides of the substrate are bent upward to form a first support plate and a second support plate perpendicular to the horizontal plane, respectively.

[0008] The top of the first support plate is bent toward the trapezoidal arch to form a first connecting platform, and the top of the first connecting platform is provided with continuous protrusions;

[0009] The top surface of the second support plate is bent away from the trapezoidal arch to form a second connecting platform, and the bottom of the second connecting platform is provided with a continuous recess; the recess is adapted to the protrusion.

[0010] Furthermore, based on the aforementioned scheme, the horizontal elevation of the second connecting platform is consistent with the horizontal elevation of the top surface of the trapezoidal arch; the horizontal elevation of the second connecting platform is greater than or equal to the horizontal elevation of the first connecting platform.

[0011] Furthermore, based on the aforementioned scheme, the end of the second connecting platform away from the first connecting platform is bent toward the trapezoidal arch base plate to form a baffle.

[0012] Furthermore, based on the aforementioned scheme, the two inclined webs of the trapezoidal arch have a symmetrical stepped structure.

[0013] Furthermore, based on the aforementioned scheme, the stepped structure includes three steps, with each step having an inclination angle of 60° to the horizontal elevation of the trapezoidal arch base; the height of the trapezoidal arch is 86mm.

[0014] Furthermore, based on the aforementioned scheme, the stepped structure includes three steps, which are the first step, the second step, and the third step from the bottom plate of the trapezoidal arch to its top plate.

[0015] The first step is inclined at a 45° angle to the horizontal elevation of the trapezoidal arch base plate, with a height of 25mm.

[0016] The second step is inclined at a 55° angle to the horizontal elevation of the trapezoidal arch base plate, with a height of 30mm;

[0017] The third step is inclined at a 60° angle to the horizontal elevation of the trapezoidal arch base plate, with a height of 31mm.

[0018] Furthermore, based on the aforementioned scheme, the portion of the base plate of the trapezoidal arch near the trapezoidal arch is bent to form a continuous V-shaped groove, and the V-shaped groove is spaced apart along the length direction of the substrate.

[0019] Furthermore, based on the aforementioned scheme, the bottom of the V-groove is arc-shaped with a radius of 1.5mm; the groove depth of the V-groove is 2mm, and the opening angle of the V-groove is 70°.

[0020] A TD plate truss is formed by splicing multiple TD plates, wherein a second connecting platform of any TD plate located inside the truss overlaps with a first connecting platform of an adjacent TD plate, and its concave portion engages with the convex portion of the adjacent TD plate; wherein,

[0021] The horizontal elevation of the first connecting platform of the two TD plates located at both ends of the truss is the same as the horizontal elevation of the second connecting platform;

[0022] The first connecting platform of the plurality of TD plates located inside the truss has a lower horizontal elevation than the second connecting platform.

[0023] A mezzanine floor slab includes the aforementioned truss, with a sound-absorbing pad, a carbon fiber underfloor heating layer, and a wooden board laid sequentially above the truss, and a fireproof gypsum board ceiling installed below the truss.

[0024] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0025] This application replaces the existing beam-plate structure by pressing a W-shaped TD plate at the center of the substrate, thereby reducing the structural thickness through stress discretization. A first and second support plate, perpendicular to the horizontal plane, are formed by bending upwards on both sides of the substrate, creating upright support plates that function as both support and edge-sealing beams. A first connecting platform is formed by bending the top of the first support plate towards a trapezoidal arch, with continuous protrusions at its top. A second connecting platform is formed by bending the top of the second support plate away from the trapezoidal arch, with continuous recesses at its bottom. These recesses fit the protrusions, allowing adjacent TD plates to be directly connected by overlapping the first and second connecting platforms. The interlocking of the protrusions and recesses provides a self-locking connection under vertical loads, forming a stable connection. This avoids stress concentration in bolted connections, and the connection is convenient, quick, and highly practical. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a cross-sectional view of the TD plate according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the TD plate according to another embodiment of the present invention;

[0029] Figure 3 This is a structural cross-sectional view of the mezzanine floor slab in an embodiment of this utility model.

[0030] Icons: 1-TD board, 11-trapezoidal arch, 12-first support plate, 13-second support plate, 14-first connecting platform, 141-protrusion, 15-second connecting platform, 151-recess, 152-baffle, 16-step structure, 161-first step, 162-second step, 163-third step, 17-V-groove, 2-sound insulation pad, 3-carbon fiber underfloor heating layer, 4-wood board. Detailed Implementation

[0031] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0032] Please refer to Figures 1-2 The diagram shown is a schematic of the overall structure of the TD board.

[0033] This embodiment provides a TD board. The TD board 1 is W-shaped in general. A trapezoidal arch 11 is formed by pressing a substrate at the center line. The two sides of the substrate are bent upward to form a first support plate 12 and a second support plate 13 that are perpendicular to the horizontal plane.

[0034] The top of the first support plate 12 is bent toward the trapezoidal arch 11 to form the first connecting platform 14, and the top of the first connecting platform 14 is provided with continuous protrusions 141.

[0035] The top surface of the second support plate 13 is bent away from the trapezoidal arch 11 to form a second connecting platform 15. The bottom of the second connecting platform 15 is provided with a continuous recess 151; the recess 151 is adapted to the protrusion 141.

[0036] The following will further describe a TD board 1 according to this exemplary embodiment.

[0037] In some embodiments, the TD board 1 is W-shaped, with a trapezoidal arch 11 formed by pressing a substrate at its center line. The two sides of the substrate are bent upwards to form a first support plate 12 and a second support plate 13 perpendicular to the horizontal plane. These upright support plates on either side of the trapezoidal arch 11 provide support and act as edge-sealing beams, preventing the upper soundproofing pad 2 and the wooden floor from being overhanged. The top of the first support plate 12 bends towards the trapezoidal arch 11 to form a first connecting platform 14, with a continuous protrusion 141 at its top. The top surface of the second support plate 13 bends away from the trapezoidal arch 11 to form a second connecting platform 15, with a continuous recess 151 at its bottom. The recess 151 is adapted to the protrusion 141. The first connecting platform 14 and the second connecting platform 15 can serve as horizontal supports and also as connectors between adjacent TD plates 1. During connection, the second connecting platform 15 of the TD plate 1 directly overlaps the first connecting platform 14 of the adjacent TD plate 1, and the vertical support plates of the adjacent TD plates 1 fit together, thus allowing the TD plates 1 to be quickly spliced. After overlapping, they can be connected by the interlocking of continuous protrusions 141 and concave portions 151, and self-locking under vertical load, thereby firmly connecting the TD plates 1. The connection is convenient and quick, which can greatly save time.

[0038] In a preferred embodiment, the horizontal elevation of the second connecting platform 15 is consistent with the horizontal elevation of the top surface of the trapezoidal arch 11; the horizontal elevation of the second connecting platform 15 is greater than or equal to the horizontal elevation of the first connecting platform 14. That is, the height of one side of the connecting platform is level with the height of the trapezoidal arch 11, and the height of the other side of the connecting platform is lower than or level with the trapezoidal arch 11. Specifically, when splicing multiple TD boards 1, the heights of the connecting platforms that are spliced ​​together need to be different to achieve overlap. The height of the connecting platform of the outermost TD board 1 needs to be consistent with the height of the trapezoidal arch 11 to facilitate the horizontal laying of the sound-absorbing pad 2 and the wooden board 4 on its top, making its laying stable and avoiding unevenness at both ends.

[0039] In a preferred embodiment, the end of the second connecting platform 15 furthest from the first connecting platform 14 is bent toward the bottom plate of the trapezoidal arch 11 to form a baffle 152. The baffle 152 can limit the movement of the two adjacent TD plates 1 after splicing, further preventing their horizontal misalignment.

[0040] As a preferred embodiment, the two inclined webs of the trapezoidal arch 11 have a symmetrical stepped structure 16. By setting the single trapezoidal arch 11 as a stepped arch structure, the three-stage arch increases the neutral axis offset Δz, which can improve the mid-span bending stiffness.

[0041] Furthermore, the aforementioned stepped structure 16 may include three steps, each step having an inclination angle of 60° with the horizontal elevation of the bottom plate of the trapezoidal arch 11; the height of the trapezoidal arch 11 is 86mm.

[0042] Furthermore, the aforementioned stepped structure 16 may also include three steps, namely, a first step 161, a second step 162, and a third step 163, from the bottom plate of the trapezoidal arch 11 to its top plate; the first step 161 is inclined at a 45° angle to the horizontal elevation of the bottom plate of the trapezoidal arch 11, with a height of 25 mm; the second step 162 is inclined at a 55° angle to the horizontal elevation of the bottom plate of the trapezoidal arch 11, with a height of 30 mm; and the third step 163 is inclined at a 60° angle to the horizontal elevation of the bottom plate of the trapezoidal arch 11, with a height of 31 mm.

[0043] That is, the inclination angles of the three-tiered stepped structure 16 can be set to be the same or different, but the total height is the same. The first tier 161, with different inclination angles, slopes upwards at 45° from the bottom and has a height of 25mm to disperse stress and prevent local buckling. The second tier 162, serving as a middle transition section, slopes upwards at 55° and has a height of 30mm to bear the main shear force. The third tier 163, serving as a load-bearing section, slopes upwards at 60° and has a height of 31mm to provide horizontal load-bearing capacity and optimize compressive stress. The three-tiered stepped structure achieves graded stress transfer through a gradient of inclination angles, resulting in improved load-bearing capacity compared to a stepped structure 16 with equal inclination angles.

[0044] It should be noted that adjacent steps are connected by a gradually curvatured arc to eliminate stress concentration (not shown in the figure).

[0045] In a preferred embodiment, the portion of the base plate of the trapezoidal arch 11 near the trapezoidal arch 11 is bent to form a continuous V-shaped groove 17, and the V-shaped grooves 17 are spaced apart along the length of the substrate. The V-shaped grooves 17 are precisely positioned at the extreme bending moment points, which can cooperate with the trapezoidal arch 11 of the stepped structure 16 to further improve the bending stiffness.

[0046] In a preferred embodiment, the bottom of the V-groove 17 is arc-shaped with a radius of 1.5 mm to prevent cold bending cracks. The groove depth of the V-groove 17 is 2 mm to increase the cross-sectional height. The opening angle of the V-groove 17 is 70° to balance stress diffusion and material strength.

[0047] Reference Figure 2 This application also provides a TD plate truss, formed by splicing multiple TD plates 1 as described above. The second connecting platform 15 of any TD plate 1 located inside the truss overlaps the first connecting platform 14 of an adjacent TD plate 1, and its concave portion 151 engages with the convex portion 141 of the adjacent TD plate 1. The horizontal elevation of the first connecting platform 14 of the two TD plates 1 located at both ends of the truss is consistent with the horizontal elevation of the second connecting platform 15. The horizontal elevation of the first connecting platform 14 of the multiple TD plates 1 located inside the truss is lower than the horizontal elevation of the second connecting platform 15. This allows multiple TD plates 1 to be spliced ​​together, and the height of the TD plate 1 located at the end is consistent with the height of the trapezoidal arch 11, ensuring the horizontal stability of the wooden planks 4 laid on them.

[0048] Reference Figure 3 This application embodiment also provides a mezzanine floor slab, including the above-mentioned truss, with a sound-absorbing pad 2, a carbon fiber underfloor heating layer 3 and a wooden board 4 laid sequentially on top of the truss, and a fireproof gypsum board ceiling installed below the truss.

[0049] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0050] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A TD board, characterized in that, The TD board is W-shaped in general, and a trapezoidal arch is formed by pressing the substrate at the center line; the two sides of the substrate are bent upward to form a first support plate and a second support plate perpendicular to the horizontal plane, respectively. The top of the first support plate is bent toward the trapezoidal arch to form a first connecting platform, and the top of the first connecting platform is provided with continuous protrusions; The top surface of the second support plate is bent away from the trapezoidal arch to form a second connecting platform, and the bottom of the second connecting platform is provided with a continuous recess; the recess is adapted to the protrusion.

2. The TD board according to claim 1, characterized in that, The horizontal elevation of the second connecting platform is consistent with the horizontal elevation of the top surface of the trapezoidal arch; the horizontal elevation of the second connecting platform is greater than or equal to the horizontal elevation of the first connecting platform.

3. The TD board according to claim 2, characterized in that, The end of the second connecting platform away from the first connecting platform is bent toward the trapezoidal arch base plate to form a baffle.

4. The TD board according to claim 1, characterized in that, The trapezoidal arch has symmetrical stepped structures on both sides of its inclined webs.

5. The TD board according to claim 4, characterized in that, The stepped structure includes three steps, with each step having an inclination angle of 60° to the horizontal elevation of the trapezoidal arch base; the height of the trapezoidal arch is 86mm.

6. The TD board according to claim 4, characterized in that, The stepped structure includes three steps, which are the first step, the second step, and the third step from the bottom plate of the trapezoidal arch to its top plate. The first step is inclined at a 45° angle to the horizontal elevation of the trapezoidal arch base plate, with a height of 25mm. The second step is inclined at a 55° angle to the horizontal elevation of the trapezoidal arch base plate, with a height of 30mm; The third step is inclined at a 60° angle to the horizontal elevation of the trapezoidal arch base plate, with a height of 31mm.

7. The TD board according to claim 1 or 6, characterized in that, The base plate of the trapezoidal arch is bent at the portion near the trapezoidal arch to form a continuous V-shaped groove, and the V-shaped groove is spaced apart along the length of the substrate.

8. The TD board according to claim 7, characterized in that, The bottom of the V-groove is arc-shaped with a radius of 1.5 mm; the groove depth is 2 mm; and the opening angle of the V-groove is 70°.

9. A TD plate truss, characterized in that, Formed by splicing multiple TD plates as described in any one of claims 1-8, wherein the second connecting platform of any TD plate located inside the truss overlaps the first connecting platform of an adjacent TD plate, and its concave portion engages with the convex portion of the adjacent TD plate; wherein, The horizontal elevation of the first connecting platform of the two TD plates located at both ends of the truss is the same as the horizontal elevation of the second connecting platform; The first connecting platform of the multiple TD plates located inside the truss has a lower horizontal elevation than the second connecting platform.

10. A mezzanine floor slab, characterized in that, The system includes the truss as described in claim 9, wherein a sound-absorbing pad, a carbon fiber underfloor heating layer, and a wooden board are laid sequentially on top of the truss, and a fireproof gypsum board ceiling is installed below the truss.

Images