Fabricated formwork-removal-free steel bar truss floor support plate
The assembled formwork-free steel truss floor deck with enhanced connections and reinforced ribs addresses the inefficiencies and structural weaknesses of traditional formwork systems, providing a stable and robust construction solution.
Patent Information
- Application Number
- CN202420946574.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-06
AI Technical Summary
Existing formwork systems for constructing building floors are time-consuming, labor-intensive, and result in uneven surfaces and structural weaknesses due to point connections and hollows, which affect construction efficiency and structural integrity.
An assembled formwork-free steel truss floor deck with a triangular pattern of main bars, a hoisting bottom plate, and a connecting assembly that includes fixed blocks, clamping blocks, and arc-shaped grab bars, ensuring stable connections and reinforced ribs to prevent hollowing and structural damage.
The solution provides a stable, gap-free connection that enhances structural strength and stability, preventing cracking and damage from thermal expansion, ensuring a smooth and robust construction process.
Smart Images
Figure CN222206917U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of assembled building floor decking plates, and in particular to an assembled formwork-free steel bar truss floor decking plate. Background Art
[0002] During the main construction of the building, beams, slabs, columns, etc. need to be cast and formed to facilitate subsequent construction.
[0003] In the related art, when pouring floor slabs, a support method of steel pipes and formworks is often used. The two are first installed and fixed, and then a steel cage is placed on the top surface of the formwork, and finally the concrete is poured. After the concrete is solidified and formed in the later stage, the steel pipes and formworks need to be removed, which is time-consuming and manpower-consuming, and is not conducive to improving the efficiency of construction. Moreover, after the formworks are removed, the bottom end surface of the floor slab is easily uneven due to the extrusion of the formworks or irregular installation in the early stage, which is not conducive to improving the smoothness of the bottom end surface of the floor slab. In addition, due to the high hardness of the concrete material of the floor slab, it is not conducive to the subsequent ceiling decoration construction.
[0004] In order to solve the above problems, a patent document with the publication number of "CN220768564U" discloses an assembled formwork-free steel truss floor deck, including: a steel truss, a connecting steel pipe and a hoisting bottom plate. The connecting steel pipe is triangular in shape, and the sharp corner of the top is fixedly connected to the bottom ends of the two bottom bars, and the connecting steel pipe extends along the width direction of the steel truss. In this application, the steel truss, the connecting steel pipe and the hoisting bottom plate can form an integrated fixed hoisting structure, and the steel truss and the connecting steel pipe can be wrapped after the steel truss is fixed to the main structure of the building and concrete is poured. The hoisting bottom plate will form a barrier to the concrete on the lower side of the steel truss, and bear the downward load applied by the concrete, which is conducive to directly fixing the hoisting bottom plate to the lower side of the concrete after the concrete solidifies, so as to facilitate direct hoisting construction through the hoisting bottom plate, without the need for formwork and demolding construction, which can effectively improve the efficiency of building construction and reduce costs.
[0005] In the above-mentioned prior art, when a triangular connecting steel pipe is used to connect the steel truss and the lifting base plate, the contact at the connection is a point (or line) connection (that is, the contact surface between the upper end of the connecting steel pipe and the lower end of the steel truss is a point or line), and the contact area is small, which makes the connection easily damaged by external forces and loses its function. At the same time, after the subsequent pouring of concrete, hollows are easily formed inside the triangular connecting steel pipe, resulting in poor structural strength at this location. After long-term use, its structure may be damaged by thermal expansion and contraction, causing cracking and the like. The actual use effect is not good. Therefore, there is a need for an assembled steel truss floor deck that does not require demolding. Utility Model Content
[0006] The purpose of the present application is to provide an assembled formwork-free steel truss floor deck to solve the problems raised in the above-mentioned background technology.
[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an assembled formwork-free steel truss floor deck, comprising main bars and a hoisting bottom plate, wherein three main bars are arranged and distributed in a triangular pattern, wherein one main bar is located at the top and is fixedly connected to two main bars at the bottom through connecting bars;
[0008] The main reinforcement and the lifting bottom plate are detachably fixed by the connecting assembly, and the connecting assembly is clamped on the main reinforcement below, and there is no gap or hole after the connecting assembly clamps the main reinforcement;
[0009] A transverse reinforcing rib is also fixed between the two main ribs at the bottom. A plurality of transverse reinforcing ribs are provided and are distributed in an equidistant array along the axial direction of the main ribs.
[0010] Preferably, the connecting assembly includes a fixed block and a clamping block, the lower end of the fixed block is fixed to the upper end of the lifting base plate, the upper end of the fixed block is provided with a semicircular notch adapted to the main reinforcement, the clamping block is detachably fixed to the fixed block through a connecting piece, and the clamping block is also provided with a semicircular notch adapted to the main reinforcement. After the fixed block is connected to the clamping block, the fixing hoop is arranged on the main reinforcement.
[0011] Preferably, the fixing block is in the shape of an elongated strip and its extension direction is consistent with the axial direction of the main rib. A plurality of clamping blocks are provided and are distributed in an array equidistantly along the axial direction of the main rib. The plurality of clamping blocks are staggered with the plurality of transverse reinforcing ribs.
[0012] Preferably, the connecting member is a bolt, the lower end of the bolt movably passes through the block and is threadedly connected to the fixed block, and each block is provided with two bolts respectively located on the left and right sides of the main rib.
[0013] Preferably, a plurality of arc-shaped grabbing ribs distributed in an array equidistantly along the axis of the main ribs are fixed to the sides of the two main ribs at the bottom that are away from each other, and the arc-shaped grabbing ribs extend to the side away from the main ribs and are in a “╮” shape.
[0014] Preferably, lifting bars are fixed on both sides of the upper main bar, the lifting bars are arranged obliquely and the lower ends are respectively fixed to the upper ends of the two arc-shaped grasping bars on both sides.
[0015] In summary, the technical effects and advantages of the utility model are:
[0016] 1. In the utility model, by setting the connection components, there are no gaps or holes after the main reinforcement is connected to the lifting bottom plate, so that hollowing is avoided during the subsequent pouring of concrete, so that the overall structural strength is consistent, and cracking or other damage caused by thermal expansion and contraction after long-term use can be avoided. At the same time, the connection components are clamped on the main reinforcement below to form a stable connection relationship, so that the main reinforcement is more stable after being connected to the lifting bottom plate, so that the assembled formwork-free steel truss floor deck is not easily disintegrated by external forces during use;
[0017] And by adding transverse reinforcement ribs, the stability of the connection between the two main reinforcements below is guaranteed, ensuring that the overall structural strength is not affected, thus achieving good use effect.
[0018] 2. In the present invention, by setting the arc-shaped grab bars, an outward-expanding grab structure can be formed on the outside of the two main bars below, so that after pouring the concrete, the concrete and the arc-shaped grab bars form a stable bite, so that the arc-shaped grab bars can provide corresponding stress for the main bars, thereby improving the connection stability between the concrete and the main bars, and facilitating the formation of a more solid connection structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 Schematic diagram of the three-dimensional structure in this embodiment;
[0021] Figure 2 It is a schematic diagram of the structure of the main reinforcement and connecting reinforcement, transverse reinforcement, arc-shaped grasping reinforcement and lifting reinforcement in this embodiment;
[0022] Figure 3 It is a side view of the main reinforcement and connecting reinforcement, transverse reinforcement, arc-shaped grasping reinforcement and lifting reinforcement in this embodiment;
[0023] Figure 4 Schematic diagram of the connection component structure in this embodiment.
[0024] In the figure: 1. main reinforcement; 11. connecting reinforcement; 12. transverse reinforcement; 13. arc-shaped grabbing reinforcement; 14. pulling reinforcement; 2. lifting base plate; 3. connecting assembly; 31. fixing block; 32. clamping block; 33. bolt. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Example: Reference Figure 1-4 The assembled formwork-free steel truss floor deck shown includes a main reinforcement 1 and a hoisting bottom plate 2. Three main reinforcements 1 are provided and distributed in a triangle. One main reinforcement 1 is located at the top and is fixedly connected to two main reinforcements 1 at the bottom through a connecting reinforcement 11.
[0027] The main reinforcement 1 and the hoisting bottom plate 2 are detachably fixed by the connecting component 3, and the connecting component 3 is clamped on the main reinforcement 1 below. There is no gap or hole after the connecting component 3 clamps the main reinforcement 1;
[0028] A transverse reinforcing rib 12 is also fixed between the two lower main ribs 1 . A plurality of transverse reinforcing ribs 12 are provided and are distributed in an equidistant array along the axial direction of the main ribs 1 .
[0029] Based on the above structure, by setting the connection component 3, there is no gap or hole after the main reinforcement 1 is connected to the lifting bottom plate 2, so that hollowing is avoided during the subsequent pouring of concrete, so that the overall structural strength is consistent, and cracking or other damage caused by thermal expansion and contraction after long-term use can be avoided. At the same time, the connection component 3 is clamped on the main reinforcement 1 below to form a stable connection relationship, so that the main reinforcement 1 is more stable after being connected to the lifting bottom plate 2, so that the assembled formwork-free steel truss floor deck is not easily disintegrated by external forces during use;
[0030] Furthermore, by adding transverse reinforcing ribs 12, the connection stability between the two main ribs 1 below is ensured, the overall structural strength is not affected, and a good use effect is achieved.
[0031] Furthermore, the connecting assembly 3 includes a fixed block 31 and a clamping block 32. The lower end of the fixed block 31 is fixed to the upper end of the lifting base plate 2. The upper end of the fixed block 31 is provided with a semicircular notch adapted to the main reinforcement 1. The clamping block 32 is detachably fixed to the fixed block 31 by a bolt 33. The lower end of the bolt 33 movably passes through the clamping block 32 and is threadedly connected to the fixed block 31. The clamping block 32 is also provided with a semicircular notch adapted to the main reinforcement 1. After the fixed block 31 is connected to the clamping block 32, the fixing hoop is provided on the main reinforcement 1.
[0032] By setting the fixing block 31 and the clamping block 32, it is only necessary to place the main rib 1 below in the semicircular notch of the fixing block 31, then clamp the clamping block 32 on top of the main rib 1, and fix the clamping block 32 to the fixing block 31 through the bolt 33 to increase the contact area of the connection, thereby forming a stable connection relationship.
[0033] Furthermore, the fixing block 31 is in the shape of an elongated strip and its extension direction is consistent with the axial direction of the main reinforcement 1. A plurality of clamping blocks 32 are provided and are distributed in an array equidistantly along the axial direction of the main reinforcement 1. The plurality of clamping blocks 32 are staggered with the plurality of transverse reinforcing ribs 12. Two bolts 33 are provided on each clamping block 32 and are respectively located on the left and right sides of the main reinforcement 1. After providing a plurality of clamping blocks 32, the connection area between the main reinforcement 1 and the lifting base plate 2 can be further increased, thereby further enhancing the stability of the connection.
[0034] Furthermore, a plurality of arc-shaped grabbing ribs 13 are fixed to the sides of the two main ribs 1 at a distance from each other, and are arranged in an equidistant array along the axial direction of the main ribs 1. The arc-shaped grabbing ribs 13 extend to the side away from the main ribs 1 and are in a “╮” shape.
[0035] By setting the arc-shaped grab bars 13, an outward-expanding grab structure can be formed on the outside of the two main bars 1 below, so that after pouring concrete, the concrete and the arc-shaped grab bars 13 form a stable bite, so that the arc-shaped grab bars 13 can provide corresponding stress for the main bars 1, thereby improving the connection stability between the concrete and the main bars 1, and facilitating the formation of a more solid connection structure.
[0036] Furthermore, tensioning bars 14 are fixed on both sides of the upper main reinforcement 1. The tensioning bars 14 are arranged at an angle and the lower ends are respectively fixed to the upper ends of the two arc-shaped grabbing bars 13 on both sides. Through the arrangement of the tensioning bars 14, an upward stress can be provided to the arc-shaped grabbing bars 13, thereby enhancing the grabbing effect of the arc-shaped grabbing bars 13, further improving the connection stability between the concrete and the main reinforcement 1, thereby improving the stability of the assembled formwork-free steel truss floor deck after installation.
[0037] Working principle of the utility model: in daily use, the main reinforcement 1, the lifting base plate 2 and the connecting assembly 3 are used to form an assembled integrated fixed lifting structure, and there is no gap or hole after the main reinforcement 1 is connected to the lifting base plate 2. Specifically, it is only necessary to place the main reinforcement 1 below in the semicircular notch of the fixing block 31, and then clamp the clamping block 32 on the main reinforcement 1, and fix the clamping block 32 with the fixing block 31 through the bolt 33 to form a stable connection relationship, so that hollowing can be avoided during the subsequent pouring of concrete, so that the overall structural strength is consistent, and cracking or other damage caused by thermal expansion and contraction after long-term use can be avoided. At the same time, the connecting assembly 3 is clamped on the main reinforcement 1 below to form a stable connection relationship, so that the main reinforcement 1 is more stable after being connected to the lifting base plate 2, so that the assembled non-dismantling steel bar truss floor deck is not easily affected by external forces and disintegrated during use;
[0038] Furthermore, by adding transverse reinforcing ribs 12, the connection stability between the two main ribs 1 below is ensured, the overall structural strength is not affected, and a good use effect is achieved.
[0039] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. An assembled formwork-free steel truss floor deck, comprising a main reinforcement (1) and a hoisting bottom plate (2), wherein three main reinforcements (1) are provided and distributed in a triangular pattern, wherein one of the main reinforcements (1) is located at the top and is fixedly connected to two main reinforcements (1) at the bottom through a connecting reinforcement (11), characterized in that: The main reinforcement (1) and the hoisting bottom plate (2) are detachably fixed via a connecting assembly (3), the connecting assembly (3) is clamped on the main reinforcement (1) below, and there is no gap or hole after the connecting assembly (3) clamps the main reinforcement (1); A transverse reinforcing rib (12) is also fixed between the two lower main ribs (1), and a plurality of the transverse reinforcing ribs (12) are arranged and distributed in an axially equidistant array along the main ribs (1).
2. The assembled formwork-free steel truss floor deck according to claim 1 is characterized in that: The connection assembly (3) comprises a fixing block (31) and a clamping block (32); the lower end of the fixing block (31) is fixed to the upper end of the hoisting base plate (2); the upper end of the fixing block (31) is provided with a semicircular notch adapted to the main reinforcement (1); the clamping block (32) is detachably fixed to the fixing block (31) via a connecting piece; the clamping block (32) is also provided with a semicircular notch adapted to the main reinforcement (1); after the fixing block (31) and the clamping block (32) are connected, a fixing hoop is provided on the main reinforcement (1).
3. The assembled formwork-free steel truss floor deck according to claim 2 is characterized in that: The fixing block (31) is in the shape of an elongated strip and its extension direction is consistent with the axial direction of the main rib (1). A plurality of the clamping blocks (32) are arranged and are distributed in an array equidistantly along the axial direction of the main rib (1). The plurality of the clamping blocks (32) are distributed in an alternating manner with the plurality of transverse reinforcing ribs (12).
4. The assembled formwork-free steel truss floor deck according to claim 3 is characterized in that: The connecting member is a bolt (33), the lower end of which movably passes through the clamping block (32) and is threadedly connected to the fixing block (31). Two bolts (33) are provided on each clamping block (32) and are respectively located on the left and right sides of the main rib (1).
5. The assembled formwork-free steel truss floor deck according to claim 1 is characterized in that: A plurality of arc-shaped grasping ribs (13) are fixed to the sides of the two main ribs (1) at a distance from each other and are arranged in an equidistant array along the axial direction of the main ribs (1). The arc-shaped grasping ribs (13) extend to the side away from the main ribs (1) and are in a "╮" shape.
6. The assembled formwork-free steel truss floor deck according to claim 5 is characterized in that: Lifting bars (14) are fixed on both sides of the main bar (1) at the top. The lifting bars (14) are arranged obliquely and the lower ends are respectively fixed to the upper ends of two arc-shaped grasping bars (13) on both sides.