Floor support plate
By designing a floor bearing plate including steel bar truss, a base plate with high flexural strength and a fiber mesh cloth, the problem of complex and non-reusable formwork removal during the construction of traditional floor bearing plates is solved, and efficient construction and house improvement are achieved Deliver quality results.
Patent Information
- Application Number
- CN202520030538.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2035-01-07
AI Technical Summary
During the construction of traditional steel bar truss floor bearing plates, the formwork is complex and cannot be reused, which affects the quality of house delivery and the construction speed does not match the development of steel structure buildings.
Design a floor bearing plate including multiple steel bar trusses, a base plate with high flexural strength and compressive strength, and a fiber mesh cloth. The steel bar trusses are connected by welding, and the base plate and fiber mesh cloth are pre-embedded, post-pouring or pressed. Set up to avoid removing the base mold and directly plastering and decoration.
It realizes efficient production, transportation and installation of floor bearing plates, improves the quality of house delivery, saves process and construction period, avoids hole problems after formwork removal, and ensures the flatness and aesthetics of the base plate.
Smart Images
Figure CN222435650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of floor slabs, in particular to a floor decking plate. Background Art
[0002] With the continuous increase in the height of buildings, steel structures are being widely used in high-rise buildings with their advantages of light weight and high strength. With the continuous development of steel structure building construction, the construction method of cast-in-place floor slabs in traditional projects has been difficult to keep up with the construction speed of steel structures in the main building, thus affecting the overall construction progress of the project. The construction of cast-in-place floor slabs requires the construction of auxiliary facilities such as formwork and scaffolding, and the amount of steel bar binding work on the project site is huge, resulting in an overall disconnection in the construction process.
[0003] In the related art, in the scheme of using ordinary steel truss floor decking, the bottom plate is a corrugated steel plate, and the bottom of the plate needs to be fireproofed. Since the bottom formwork cannot be disassembled after the concrete solidifies, the bottom surface is inconsistent with traditional concrete, and plastering cannot be carried out directly. The process is complicated and requires ceiling construction; in the scheme of assembling detachable steel truss floor decking, the process of dismantling the bottom formwork is very complicated, and the bottom formwork will inevitably be damaged during the dismantling process and cannot be reused. The reuse rate of the formwork is low, and voids will be formed after the bottom formwork connector is removed, affecting the subsequent quality of house delivery.
[0004] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.
[0005] It should be noted that this section is intended to provide background or context for the technical solutions of the utility model stated in the claims. The description herein is not admitted to be prior art by inclusion in this section. Utility Model Content
[0006] The purpose of the utility model is to provide a floor decking plate, thereby solving one or more problems caused by the limitations and defects of the relevant technology at least to a certain extent.
[0007] The utility model provides a floor decking plate, comprising:
[0008] A plurality of steel bar trusses, each of which comprises: an upper chord steel bar, two lower chord steel bars and two web bars; the two web bars are at least partially wavy and are respectively arranged on both sides of the upper chord steel bar, the web bars comprise a wavy portion at the upper end and a bent portion at the lower end, the wavy portions and the bent portions are both multiple and alternately arranged; the upper chord steel bar is fixedly arranged between the top ends of the two web bars, and the lower chord steel bar is arranged on the wavy portion close to the bent portion;
[0009] A bottom plate, a plurality of the steel bar trusses are arranged in parallel on the bottom plate, both ends of the steel bar trusses extend out of the edge of the bottom plate by a preset length, and the bending portion is arranged in the bottom plate by pre-embedding, post-casting or pressing; the thickness of the bottom plate is 6 mm to 30 mm, the 28-day flexural strength of the bottom plate is not less than 12 MPa, and the 28-day compressive strength is not less than 75 MPa;
[0010] A fiber mesh cloth is arranged inside the bottom plate and below the bending portion.
[0011] In the utility model, connecting steel bars are transversely penetrated in the plurality of the steel bar trusses, and the connecting steel bars are used to connect the plurality of the steel bar trusses into one.
[0012] In the utility model, the fiber mesh cloth and the lower surface of the bottom plate have a spacing of 2-5 mm.
[0013] In the utility model, the fiber mesh cloth is any one of glass fiber mesh cloth, basalt fiber mesh cloth and carbon fiber mesh cloth.
[0014] In the utility model, the connection mode between the upper chord steel bar, the two lower chord steel bars and the two web bars is welding.
[0015] In the utility model, the width of the bottom plate is 600mm~2400mm, and the length is 1000mm~12000mm.
[0016] In the utility model, the diameters of the upper chord steel bars and the lower chord steel bars of the steel truss are 6mm-14mm, the diameter of the web bars is 4-7mm, the height of the steel truss is 70-270mm, and the width of the steel truss is 70-90mm.
[0017] In the utility model, the angle between the bending portion and the horizontal plane is 0-45°.
[0018] In the utility model, the preset length is 3 to 10 cm.
[0019] The technical solution provided by the utility model may have the following beneficial effects:
[0020] In the utility model, by selecting a base plate with high flexural strength and compressive strength, the plate has high rigidity and is not easy to deform. The bottom surface is flat after the plate is formed, and the delivery quality is good. Compared with the assembled detachable steel truss floor decking, the bottom formwork does not need to be removed, the base plate has good flatness, and holes in the connecting parts are avoided after the formwork is removed, and secondary repairs are avoided, thus saving processes, shortening the construction period, and having beautiful appearance. At the same time, the thickness of the base plate is small, and the thickness of the base plate will not be increased. When used for splicing, not only is the position of the splicing seam easy to handle, but the bending moment can be transmitted, achieving the purpose of bidirectional plate force when the plate seams are closely spliced, but also avoiding the increase of self-weight and the increase of construction cost. By setting the fiber mesh cloth, the floor decking has higher strength and flexibility, and avoids cracking caused by surface tension shrinkage and external force. The floor decking of the present application improves the production, transportation, and hoisting efficiency while improving the quality of house delivery. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings herein are incorporated into the specification and constitute a part of the specification, represent embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 A schematic diagram showing the three-dimensional structure of a floor deck in an exemplary embodiment of the present utility model is shown;
[0023] Figure 2 A schematic structural diagram of a steel bar truss in an exemplary embodiment of the present utility model is shown;
[0024] Figure 3 A schematic diagram showing a top view of the structure of a floor deck in an exemplary embodiment of the present utility model is shown;
[0025] Figure 4 Show Figure 3 1-1 schematic diagram of the cross-sectional structure;
[0026] Figure 5 A schematic structural diagram of a fiber mesh cloth in an exemplary embodiment of the utility model is shown.
[0027] Reference numerals:
[0028] 100, steel truss; 101, upper chord steel bar; 102, lower chord steel bar; 103, web reinforcement; 1031, wave part; 1032, bending part; 200, bottom plate; 300, fiber mesh cloth. DETAILED DESCRIPTION
[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present invention will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0030] In addition, the accompanying drawings are only schematic illustrations of embodiments of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.
[0031] In this example implementation, a floor deck is provided. Figure 1~Figure 5 As shown, the floor deck comprises: a plurality of steel bar trusses 100 , a bottom plate 200 and a fiber mesh cloth 300 .
[0032] Specifically, please refer to Figure 2 Each of the steel trusses 100 includes an upper chord steel bar 101 , two lower chord steel bars 102 and two web bars 103 .
[0033] Please refer to Figure 2 The two web reinforcements 103 are at least partially wavy and are respectively arranged on both sides of the upper chord steel bar 101. The web reinforcement 103 includes a wavy portion 1031 at the upper end and a bent portion 1032 at the lower end. The wavy portion 1031 and the bent portion 1032 are both multiple and alternately arranged. The wavy portion 1031 and the bent portion 1032 can be obtained by bending the same steel bar.
[0034] The upper chord steel bar 101 is fixedly arranged between the top ends of the two web bars 103, and the lower chord steel bar 102 is arranged on the wave portion 1031 close to the bending portion 1032. In addition, a reinforcing rib parallel to the lower chord steel bar 102 may be arranged in the middle of the wave portion 1031 of the web bar 103 to further improve the strength of the steel truss 100.
[0035] Please refer to Figure 3, a plurality of the steel bar trusses 100 are arranged in parallel on the bottom plate 200, and the two ends of the steel bar trusses 100 extend out of the edge of the bottom plate 200 by a preset length, which can be 3 to 10 cm, such as 5 cm, 8 cm, etc. The bending portion 1032 is arranged in the bottom plate 200 by pre-embedding, post-casting or pressing. The thickness of the bottom plate 200 is 6 mm to 30 mm, and the 28-day flexural strength of the bottom plate is not less than 12 MPa, and the 28-day compressive strength is not less than 75 MPa.
[0036] Please refer to Figure 4 The fiber mesh cloth 300 is arranged inside the bottom plate 200 and below the bending portion 1032 .
[0037] In this embodiment, by selecting a base plate 200 with high flexural strength and compressive strength, the plate has high rigidity and is not easy to deform. The bottom surface is flat after the plate is formed, and the delivery quality is good. Compared with the assembled detachable floor decking, the bottom formwork does not need to be removed, and the base plate 200 has good flatness, which avoids leaving holes in the connectors after the template is removed, avoids secondary repairs, saves processes, shortens construction period, and has beautiful appearance. At the same time, the thickness of the base plate 200 is relatively small, and the thickness of the base plate 200 will not be increased. When used for splicing, not only is the position of the splicing seam easy to handle, but the bending moment can be transmitted, achieving the purpose of bidirectional plate force when the plate seams are closely spliced, but also avoiding the increase of self-weight and the increase of construction cost. By setting the fiber mesh cloth 300, the floor decking has higher strength and flexibility, and avoids cracking caused by surface tension shrinkage and external force. The floor decking of the present application improves the production, transportation, and hoisting efficiency while improving the quality of house delivery.
[0038] When manufacturing the floor deck, the fiber mesh cloth 300 can be buried 2 to 5 mm from the bottom surface of the bottom plate 200, and the bent portion 1032 of the steel truss 100 can be buried 3 to 10 mm from the bottom surface of the bottom plate 200, so as to form a steel truss floor deck with a prefabricated bottom plate 200 made of high-performance composite materials as the bottom mold and no need to remove the bottom mold. The floor deck can be directly plastered and decorated on the bottom of the board after pouring, so as to achieve the purpose of not removing the bottom mold.
[0039] Optionally, in some embodiments, a plurality of the steel trusses 100 are transversely penetrated with connecting steel bars (not shown in the figure), and the connecting steel bars can be welded to the lower chord steel bars 102, and the connecting steel bars are used to connect the plurality of the steel trusses 100 into one. Usually, a plurality of steel trusses 100, such as 4 or 5, are arranged on a base plate 200, and the plurality of steel trusses 100 are welded together with connecting steel bars to form a whole, so that the plurality of steel trusses 100 can be moved at a time and installed as a whole on the base plate 200, which saves installation time and is conducive to the arrangement of the plurality of steel trusses 100, so that the bearing capacity of each part of the base plate 200 is consistent.
[0040] Optionally, in some embodiments, please refer to Figure 4 The fiber mesh cloth 300 and the lower surface of the bottom plate 200 have a spacing of 2 to 5 mm, for example, 3 mm, 4 mm, etc., but it is not limited thereto. When making the floor deck, the fiber mesh cloth 300 can also be laid first, and then the high-performance composite bottom plate 200 can be cast.
[0041] Optionally, in some embodiments, the fiber mesh cloth 300 is any one of a glass fiber mesh cloth 300, a basalt fiber mesh cloth 300 and a carbon fiber mesh cloth 300. The fiber mesh cloth 300 can be an alkali-resistant mesh cloth with a mesh center distance of (5-30) mm×(5-30) mm and a line density of 2000tex-4000tex. Among them, the glass fiber mesh cloth 300 can be a customized yellow glass fiber mesh cloth, which is made of an alkali-free glass fiber mesh cloth 300 as a base material and then coated with a modified acrylic copolymer glue liquid. It has high strength, high elastic modulus, and high flexibility, and is used to enhance the overall flexibility of the floor deck material and avoid cracking caused by surface tension shrinkage and external force of the material.
[0042] The connection method between the steel bar truss 100 of the present application can be welding, which replaces the conventional binding technology, saves manpower, and improves production efficiency and structural strength.
[0043] In the present invention, optionally, the thickness of the bottom plate 200 is 6 mm to 30 mm, such as 10 mm, 20 mm, etc.; the width is 600 mm to 2400 mm, such as 800 mm, 1400 mm, 2000 mm, etc.; the length is 1000 mm to 12000 mm, such as 2000 mm, 3000 mm, 8000 mm, 10000 mm, etc. The above size setting parameters of the bottom plate 200 can meet the building's requirements for the strength of the floor deck while reducing the thickness of the bottom plate 200.
[0044] In the present invention, optionally, the diameters of the upper chord steel bars 101 and the lower chord steel bars 102 of the steel truss 100 are 6 mm to 14 mm, the diameter of the web bars 103 is 4 to 7 mm, the height of the steel truss 100 is 70 to 270 mm, for example, 100 mm, 200 mm, etc., and the width of the steel truss 100 is 70 to 90 mm.
[0045] In the present invention, the angle between the bending portion 1032 and the horizontal plane is optionally 0-45°, for example, 10°, 20°, etc. The bending portion 1032 is used to connect the steel truss 100 and the bottom plate 200, so that the connection strength between the two is higher, and the engineering quality can be guaranteed.
[0046] It should be noted that, in the above embodiment, the base plate 200 is made of high-performance composite material. The high-performance composite material includes the following components in weight percentage: 20% to 35% cement, 5% to 15% mineral admixture, 50% to 65% sand, 0.05% to 0.20% defoamer, 0.10% to 0.25% polycarboxylic acid high-efficiency water reducing agent, 1.0% to 3.0% composite expansion agent, 0.05% to 0.20% early strength agent; in addition, the total volume content of steel fiber, polypropylene fiber, polyethylene fiber and other fibers is 0.20% to 0.70%.
[0047] The specific components of the high-performance composite material are as follows: cement is 42.5 grade Portland cement;
[0048] Mineral admixtures include S95 mineral powder, secondary fly ash (loss on ignition ≤ 8.0%), etc., which can enhance the hydration of the cementitious system, improve the strength, density and impermeability of the floor deck, and improve the segregation and water seepage performance of the material;
[0049] The sand is made of quartz sand or machine-made sand, with a continuous grading within the three particle size ranges of 1.18mm, 1.18mm-2.36mm and 2.36mm-4.75mm. The maximum particle size of the sand is less than or equal to 4.75mm, and the bulk density is 2.5g / cm 3 ~3.9g / cm 3 , water absorption rate does not exceed 4%;
[0050] The defoamer uses an organic silicon defoamer, which can be used to eliminate bubbles generated during the mixing process, improve the pore structure of the hardened body of the floor deck material, and improve the slurry performance;
[0051] The water reducing agent adopts polycarboxylic acid high-efficiency water reducing agent, and the water reducing rate is not less than 35%, which can disperse cement and other cementitious materials and improve the fluidity of the mixture;
[0052] The composite expansion agent is made of ettringite and lime system materials, which provides early and late expansion performance for the floor decking, preventing or reducing cracks caused by material shrinkage;
[0053] Early strength agents include chemical admixtures such as lithium sulfate, calcium formate and triethanolamine, which can be used alone or in combination.
[0054] In a test example, the performance test results of the base plate 200 of the present application are shown in Table 1.
[0055] Table 1 Bottom plate parameter test results
[0056]
[0057] In summary, this application has the following beneficial effects:
[0058] 1. The prefabricated base plate 200 is made of high-performance composite materials. The high strength, high durability, high ductility and crack control ability of the high-performance composite materials are used to reduce the thickness of the prefabricated base plate 200. The prefabricated components are light in weight, easy to produce, transport and install, and reduce construction costs.
[0059] 2. The bottom plate 200 of the utility model is relatively thin, which increases the space for passing professional pipelines under the steel truss 100, making it easier to construct on site.
[0060] 3. When the utility model is used, plastering decoration can be directly carried out on the bottom of the base plate 200, which simplifies the construction process, saves construction time and improves efficiency; there are no fire prevention and anti-corrosion problems, the base plate 200 has good flatness, no welding points on the surface, and beautiful delivery.
[0061] 4. Due to the excellent mechanical properties of high-performance composite materials, the utility model can increase the span of the prefabricated base plate 200 with a relatively thin plate thickness, realize a large-span prefabricated base plate 200, reduce the joints in the room, improve the quality of project delivery, reduce the number of demoulding, hoisting and installation, and facilitate construction.
[0062] 5. The utility model utilizes the excellent tensile strength and crack control ability of high-performance composite materials, and can avoid the cracking problem of the prefabricated base plate 200 during the production, transportation and installation construction process by simply changing the material of the base plate 200, without applying prestress.
[0063] 6. The utility model adopts high-performance composite materials as the prefabricated bottom plate 200, which has good crack resistance and high yield rate. It is not easy to produce cracks during the production process, which is convenient for house delivery.
[0064] 7. The thickness of the bottom plate 200 of the utility model is relatively thin, and the thickness of the floor decking plate formed by post-casting is smaller than that of the traditional solution, thereby increasing the clear height of the house.
[0065] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like that may appear in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the utility model.
[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0067] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0068] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.
[0070] Those skilled in the art will readily come to other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.
Claims
1. A floor deck, characterized in that: include: A plurality of steel bar trusses, each of which comprises: an upper chord steel bar, two lower chord steel bars and two web bars; the two web bars are at least partially wavy and are respectively arranged on both sides of the upper chord steel bar, the web bars comprise a wavy portion at the upper end and a bent portion at the lower end, the wavy portions and the bent portions are both multiple and alternately arranged; the upper chord steel bar is fixedly arranged between the top ends of the two web bars, and the lower chord steel bar is arranged on the wavy portion close to the bent portion; A bottom plate, a plurality of the steel bar trusses are arranged in parallel on the bottom plate, both ends of the steel bar trusses extend out of the edge of the bottom plate by a preset length, and the bending portion is arranged in the bottom plate by pre-embedding, post-casting or pressing; the thickness of the bottom plate is 6 mm to 30 mm, the 28-day flexural strength of the bottom plate is not less than 12 MPa, and the 28-day compressive strength is not less than 75 MPa; A fiber mesh cloth is arranged inside the bottom plate and below the bending portion.
2. The floor decking according to claim 1, characterized in that: Connecting steel bars are transversely inserted into the plurality of the steel bar trusses, and the connecting steel bars are used to connect the plurality of the steel bar trusses into one.
3. The floor decking according to claim 1, characterized in that: The fiber mesh cloth has a spacing of 2-5 mm from the lower surface of the bottom plate.
4. The floor decking according to claim 1, characterized in that: The fiber mesh cloth is any one of glass fiber mesh cloth, basalt fiber mesh cloth and carbon fiber mesh cloth.
5. The floor decking according to claim 1, characterized in that: The connection method between the upper chord steel bars, the two lower chord steel bars and the two web bars is welding.
6. The floor deck according to any one of claims 1 to 5, characterized in that: The base plate has a width of 600 mm to 2400 mm and a length of 1000 mm to 12000 mm.
7. The floor deck according to any one of claims 1 to 5, characterized in that: The diameters of the upper chord steel bars and the lower chord steel bars of the steel truss are 6-14 mm, the diameter of the web bars is 4-7 mm, the height of the steel truss is 70-270 mm, and the width of the steel truss is 70-90 mm.
8. The floor decking according to any one of claims 1 to 5, characterized in that: The angle between the bending portion and the horizontal plane is 0-45°.
9. The floor deck according to any one of claims 1 to 5, characterized in that: The preset length is 3 to 10 cm.