Disassembly-free high-strength fine aggregate concrete steel bar truss floor support plate
The design of fine aggregate concrete reinforced truss floor decks solved the problems of low bending strength of the base slab and difficulty in pipeline layout, achieving a stable connection and simplifying the construction process.
Patent Information
- Application Number
- CN202520541342.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-26
AI Technical Summary
The existing steel truss floor deck has low bending strength, making it impossible to pre-embed conduits, which makes it difficult to lay pipelines later. It also causes grout leakage at the joints, poor adhesion between the cast-in-place concrete and the floor deck, and the two ends of the floor deck cannot be fixed.
The base slab is made of fine aggregate concrete with an internal steel wire mesh reinforcement layer, pre-embedded conduits, and lap joints at the ends of the base slab. A connecting layer is provided on the upper surface of the main body, and fixing holes are reserved at both ends to improve bending strength and solve the problems of pipeline layout and grout leakage at joints.
It improved the bending strength of the base plate, simplified the pipeline layout, avoided grout leakage at the joints and adhesion of the cast-in-place concrete, and achieved a stable fixation to the frame beam.
Smart Images
Figure CN223964065U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of prefabricated building materials technology, and in particular relates to a non-removable high-strength fine stone concrete steel truss floor deck. Background Technology
[0002] Steel truss floor decking is a composite load-bearing slab in which steel trusses and a base slab are connected as a whole by resistance spot welding or other methods. Compared with traditional cast-in-place concrete floor slabs, it eliminates cumbersome construction procedures such as formwork erection, formwork removal, and steel bar binding, which greatly improves the construction speed of floor slabs. Especially for high-rise buildings, it provides a certain guarantee for the overall project progress.
[0003] In the existing technology, the bottom plate of the steel truss floor deck is made of relatively thin (usually 0.4mm to 0.8mm) galvanized steel plate or cold-rolled steel plate. The bottom plate has low bending strength and cannot be pre-embedded with conduits for protecting electrical wires. The later installation of pipelines requires the opening of cable trays in the concrete layer poured on the bottom plate, which makes the later pipeline installation difficult. In addition, the existing steel truss floor decks using steel plates as the bottom plate have problems such as grout leakage at the joints, poor adhesion between the cast-in-place concrete and the upper surface of the bottom plate, and the inability to fix the two ends of the floor deck to the frame beam. Utility Model Content
[0004] In order to at least solve one of the aforementioned technical problems of existing steel truss floor decks, the purpose of this utility model is to provide a non-removable high-strength fine aggregate concrete steel truss floor deck to provide the bending strength of the base plate and solve the problem of difficulty in subsequent pipeline layout.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] A non-removable high-strength fine-aggregate concrete reinforced concrete truss floor deck includes a rectangular base plate and a plurality of evenly spaced reinforced concrete trusses on the base plate.
[0007] The base plate includes a main body made of fine stone concrete and a steel wire mesh reinforcement layer embedded in the main body, and the lower end of the steel truss is embedded in the main body.
[0008] The base plate is provided with a pre-embedded conduit, and the lower part of the pre-embedded conduit is embedded in the motherboard body.
[0009] Preferably, the embedded conduit is parallel to the steel truss, and elastic sealing sleeves are provided at both ends of the embedded conduit.
[0010] Preferably, the elastic sealing sleeve is fitted onto the end of the pre-embedded conduit.
[0011] Preferably, one end of the elastic sealing sleeve is inserted into the end of the pre-embedded conduit.
[0012] Preferably, the inner wall of the end of the elastic sealing sleeve that is inserted into the end of the pre-embedded conduit is provided with an outwardly inclined guide portion.
[0013] Preferably, the outer end face of the elastic sealing sleeve protrudes slightly beyond the corresponding end face of the base plate.
[0014] Preferably, the bottom plate has an overlapping portion at one end, and the overlapping portions at two opposite ends match each other.
[0015] Preferably, the upper surface of the main body is provided with a connecting layer, which is composed of a number of fine stones evenly distributed on the upper surface of the main body.
[0016] Preferably, the bottom plate has pre-drilled holes at both ends for fixing screws to pass through in order to fix the steel truss floor deck to the frame beam.
[0017] Preferably, the thickness of the motherboard body is 15-25 mm.
[0018] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:
[0019] This utility model uses fine aggregate concrete to cast the main body of the base slab and sets a steel wire mesh reinforcement layer inside the main body, which effectively improves the bending strength of the base slab of the steel truss floor deck. At the same time, while ensuring that the weight is not too large, the thickness of the base slab cast with fine aggregate concrete can be much larger than that of the base slab made of steel plate. Therefore, it is possible to set pre-embedded conduits on the surface of the base slab, avoiding the trouble of opening wire grooves in the concrete layer poured above the base slab later, thus effectively solving the problem of difficult pipeline layout in the later stage.
[0020] In addition, this utility model effectively solves the problem of grout leakage at the joint between two adjacent steel truss floor slabs by setting an overlapping part at the end of the base plate. It also effectively solves the problem of poor adhesion between the cast-in-place concrete above the steel truss floor slab and the upper surface of the base plate by setting a connecting layer composed of several fine stones evenly distributed on the upper surface of the main body. Furthermore, it effectively solves the problem that the ends of the floor slab cannot be fixed on the frame beam by reserving fixing holes at both ends of the base plate for fixing screws to pass through.
[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale. Obviously, the drawings described below are merely some embodiments of this utility model; those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0023] Figure 1 This is a cross-sectional view along the width of a high-strength fine-aggregate concrete steel truss floor slab that can be dismantled without dismantling, according to one embodiment of this utility model.
[0024] Figure 2 This is a bottom view of a non-dismantling high-strength fine aggregate concrete steel truss floor deck in one embodiment of this utility model;
[0025] Figure 3 This is a partial axial sectional view of the pre-embedded conduit in a high-strength fine-aggregate concrete steel truss floor deck that does not require dismantling, according to one embodiment of this utility model.
[0026] Figure 4 This is a partial axial sectional view of the pre-embedded conduit in a high-strength fine-aggregate concrete steel truss floor slab that does not require disassembly, according to another embodiment of this utility model. Detailed Implementation
[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0028] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art and should not be interpreted in an idealized or overly formal sense unless specifically defined.
[0029] In this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.
[0030] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] like Figure 1-4 As shown, this utility model embodiment provides a non-removable high-strength fine stone concrete steel truss floor deck, including a rectangular base plate 1 and a plurality of steel trusses 2 evenly spaced on the base plate 1.
[0032] Specifically, the base plate 1 includes a main body 101 made of fine stone concrete and a steel wire mesh reinforcement layer 102 embedded in the main body 101. The lower end of the steel truss 2 is embedded in the main body 101. A pre-embedded conduit 3 is provided on the base plate 1, and the lower part of the pre-embedded conduit 3 is embedded in the main body 101.
[0033] This embodiment of the utility model uses fine aggregate concrete to pour the main body 101 of the base slab 1, and sets a steel wire mesh reinforcement layer 102 inside the main body 101. This effectively improves the bending strength of the base slab 1 of the steel truss floor deck. At the same time, while ensuring that the weight is not too large, since the thickness of the base slab 1 poured with fine aggregate concrete can be much larger than that of the base slab 1 made of steel plate, the pre-embedded conduit 3 can be set on the surface of the base slab 1. This avoids the trouble of opening the wire groove in the concrete layer poured above the base slab 1 later, thus effectively solving the problem of difficult pipeline layout in the later stage.
[0034] Specifically, in this embodiment, the pre-embedded conduit 3 is a PVC pipe, the steel wire mesh reinforcement layer 102 is a hot-dip galvanized steel wire mesh with a diameter of about 1 mm and a hole spacing of about 50 mm, and the fine stone concrete is concrete with a strength of C30 to C60 and a maximum stone particle size of no more than 15 mm.
[0035] It should be noted that the specific structure of the steel truss 2 on the base plate 1 can adopt the existing steel truss 2 structure. The difference is that the steel truss 2 in the existing steel truss floor deck is connected to the base plate 1 made of steel plate by welding. In this embodiment, the steel truss 2 in the steel truss floor deck is connected to the base plate 1 by embedding its lower end in the main body 101 made of fine stone concrete.
[0036] In one embodiment, the embedded conduit 3 is parallel to the steel truss 2, and elastic sealing sleeves 4 are provided at both ends of the embedded conduit 3. By setting the embedded conduit 3 parallel to the steel truss 2, interference from the steel truss 2 with the embedded conduit is avoided, thus preventing the arrangement of the embedded conduit from being affected. By providing elastic sealing sleeves 4 at both ends of the embedded conduit 3, when two adjacent steel truss floor slabs are spliced, the embedded conduits on the two base slabs 1 abut against each other through their respective elastic sealing sleeves 4, thereby sealing the splice of the embedded conduits on the two base slabs 1 and preventing mortar from seeping into the interior of the embedded conduit from the splice when concrete is poured later.
[0037] In one embodiment, such as Figure 4 As shown, the elastic sealing sleeve 4 is fitted onto the end of the pre-embedded conduit 3. This arrangement avoids the inner end of the elastic sealing sleeve 4 from obstructing the subsequent threading of wires into the pre-embedded conduit.
[0038] In another embodiment, such as Figure 3 As shown, one end of the elastic sealing sleeve 4 is inserted into the end of the pre-embedded conduit. This arrangement effectively reduces the maximum diameter of the whole after the elastic sealing sleeve 4 and the pre-embedded conduit are connected, thereby ensuring that the pre-embedded conduit is buried deeper in the main body 101 when the thickness of the base plate 1 is constant, thus improving the firmness of the connection between the pre-embedded conduit and the base plate 1.
[0039] Based on the previous embodiment, in one embodiment, the inner wall of the end of the elastic sealing sleeve 4 that is inserted into the pre-embedded conduit is provided with an outwardly inclined guide portion 401. This arrangement facilitates the guidance of the wire during the subsequent wire threading process in the pre-embedded conduit, and avoids the inner end of the elastic sealing sleeve 4 obstructing the wire threading.
[0040] In one embodiment, the outer end face of the elastic sealing sleeve 4 protrudes slightly beyond the corresponding end face of the upper surface of the base plate 1. In this way, when two steel truss floor slabs are spliced, the elastic sealing sleeves 4 on the embedded conduits on the two base plates 1 can fit more tightly, better ensuring the sealing of the splice of the embedded conduits.
[0041] In one embodiment, the ends of the base plate 1 are provided with overlapping portions 103, and the overlapping portions 103 at opposite ends match each other. Thus, when two adjacent steel truss floor slabs are spliced, they are joined through the matching overlapping portions 103 on their base plates 1, effectively solving the problem of grout leakage at the joint between adjacent steel truss floor slabs. Specifically, as... Figure 1 As shown, the overlapping portions 103 at the two opposite ends of the base plate 1 can be mutually matching groove and protrusion structures, respectively.
[0042] In one embodiment, a connecting layer 104 is provided on the upper surface of the main body 101. The connecting layer 104 is composed of several fine stones evenly distributed on the upper surface of the main body 101. This can effectively solve the problem of poor adhesion between the cast-in-place concrete above the steel truss floor deck and the upper surface of the bottom plate 1 of the steel truss floor deck.
[0043] In one embodiment, the base plate 1 has pre-drilled fixing holes 105 at both ends for fixing screws to pass through and fix the steel truss floor deck to the frame beam. In this way, when the steel truss floor deck is installed, the steel truss floor deck can be fixed to the frame beam by fixing screws passing through the fixing holes 105, effectively solving the problem that the two ends of the floor deck cannot be fixed to the frame beam.
[0044] In one embodiment, the thickness of the motherboard body 101 is 15-25 mm. In this embodiment, the thickness of the motherboard body 101 is preferably 20 mm.
[0045] In one embodiment, the lower surface of the main body 101 is provided with a fiber mesh layer 106, which can improve the adhesion between the bottom surface of the base plate 1 and the decoration materials during the subsequent decoration process.
[0046] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model 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 or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A non-removable high-strength fine-aggregate concrete reinforced concrete truss floor deck, comprising a rectangular base plate and a plurality of uniformly spaced reinforced concrete trusses arranged on the base plate, characterized in that, The base plate includes a main body made of fine stone concrete and a steel wire mesh reinforcement layer embedded in the main body, and the lower end of the steel truss is embedded in the main body. The base plate is provided with a pre-embedded conduit, and the lower part of the pre-embedded conduit is embedded in the motherboard body.
2. The high-strength fine-aggregate concrete reinforced truss floor slab that does not require dismantling, as described in claim 1, is characterized in that... The embedded conduit is parallel to the steel truss, and elastic sealing sleeves are provided at both ends of the embedded conduit.
3. The non-removable high-strength fine-aggregate concrete reinforced truss floor decking according to claim 2, characterized in that, The elastic sealing sleeve is fitted onto the end of the pre-embedded conduit.
4. The high-strength fine-aggregate concrete reinforced truss floor slab that does not require dismantling, as described in claim 2, is characterized in that... One end of the elastic sealing sleeve is inserted into the end of the pre-embedded conduit.
5. The high-strength fine-aggregate concrete reinforced truss floor slab that does not require dismantling, as described in claim 4, is characterized in that... The inner wall of the end of the elastic sealing sleeve that is inserted into the end of the pre-embedded conduit is provided with an outwardly inclined guide portion.
6. The non-removable high-strength fine-aggregate concrete reinforced truss floor slab according to any one of claims 2-5, characterized in that, The outer end face of the elastic sealing sleeve protrudes slightly from the corresponding end face of the base plate.
7. The non-removable high-strength fine-aggregate concrete reinforced truss floor slab according to any one of claims 1-5, characterized in that, The bottom plate has overlapping portions at its ends, and the overlapping portions at opposite ends match each other.
8. The non-removable high-strength fine-aggregate concrete reinforced truss floor slab according to any one of claims 1-5, characterized in that, The upper surface of the main body is provided with a connecting layer, which is composed of several fine stones evenly distributed on the upper surface of the main body.
9. The non-removable high-strength fine-aggregate concrete reinforced truss floor slab according to any one of claims 1-5, characterized in that, The bottom plate has pre-drilled holes at both ends for fixing screws to pass through in order to fix the steel truss floor deck to the frame beam.
10. The non-removable high-strength fine-aggregate concrete reinforced truss floor slab according to any one of claims 1-5, characterized in that, The thickness of the mainboard body is 15-25mm.