Hollow floor filling body anti-floating device
By designing a hollow floor cover filling body anti-floating device and connecting the tie rod assembly to the fill body and the steel mesh frame, the problem of floating on the fill body is solved, the stability and quality of the floor cover is improved, and the advantages of environmental protection and energy saving are provided.
Patent Information
- Application Number
- CN202421821133.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During the construction of hollow floor buildings, the filler is prone to float and deviate due to the buoyancy of the concrete slurry, resulting in super high elevation and quality problems of the floor buildings.
A hollow floor cover filling body anti-floating device is designed, including upper and lower steel mesh frames, filler bodies, floor formwork and tie rod components. The tie rod assembly is connected to the filler through a central hole and locked with the upper steel mesh frame and the bottom formwork to form an integral structure to resist floating.
Effectively prevent the filling body from floating, ensure the stability and quality of the elevation of the floor, reduce the consumption of steel bars and iron wire, and has the advantages of environmental protection and energy saving.
Smart Images
Figure CN222909182U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hollow floor construction, and particularly relates to an anti-floating device for a hollow floor filler body. Background Technique
[0002] With the continuous progress of building technology and the higher requirements of people for building functions, structural performance and economy, the cast-in-place concrete hollow floor technology has been widely applied due to its unique advantages. This technology forms a hollow structure by filling lightweight materials (such as EPS, lightweight concrete, etc.) inside the floor slab, which not only reduces the self-weight of the floor slab, but also increases the net clear height of the structure, enhances the effects of heat preservation, heat insulation, sound insulation and noise reduction. At the same time, due to the reduction of the amount of concrete and steel bars used, the construction speed has also been significantly improved.
[0003] However, during the construction of the hollow floor, the key technical problem is the anti-floating problem of the filler body. When the concrete is poured, due to the buoyancy effect of the concrete slurry, the filler body is prone to float and shift. The floating of the filler body will cause the elevation of the local floor slab to be too high, and then quality problems of the hollow floor will occur.
[0004] Based on the above problems, the utility model proposes an anti-floating device for a hollow floor filler body. Content of the Utility Model
[0005] The purpose of the utility model is to provide an anti-floating device for a hollow floor filler body. To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] An anti-floating device for a hollow floor filler body includes an upper layer steel bar grid, a lower layer steel bar grid, a plurality of filler bodies, a floor bottom formwork and a plurality of tie rod assemblies;
[0007] The upper layer steel bar grid and the lower layer steel bar grid are arranged at intervals up and down relatively; the floor bottom formwork is arranged below the lower layer steel bar grid, a plurality of the filler bodies are arranged in a rectangular array between the upper layer steel bar grid and the lower layer steel bar grid, and each of the filler bodies is internally provided with the tie rod assemblies extending out of both ends thereof. One end of each tie rod assembly is connected to the upper layer steel bar grid, and the other end thereof extends out of the lower end surface of the floor bottom formwork and is sleeved with a locking member to block the lower end surface of the floor bottom formwork.
[0008] Furthermore, a rib beam is arranged between every two adjacent filler bodies, one end of the rib beam is connected to the upper layer steel bar grid, and the other end thereof is connected to the lower layer steel bar grid; a central hole penetrating through both ends thereof is axially arranged on the filler body.
[0009] Furthermore, each of the tie rod assemblies includes an anti-floating tie rod and a reusable rod. The hooked portion of the anti-floating tie rod is connected to the upper layer steel bar grid. The bottom end of the anti-floating tie rod penetrates through the central hole and is connected to the floor bottom formwork. The reusable rod penetrates through the floor bottom formwork and is threadedly connected to the bottom end of the anti-floating tie rod. The reusable rod is connected to the floor bottom formwork through the locking member.
[0010] Furthermore, two main keels are arranged on both sides of each of the reusable rods. A pair of the main keels are longitudinally arranged at the bottom of the floor bottom formwork.
[0011] Furthermore, a fixing clip sleeved on the reusable rod is arranged at the lower end of a pair of the main keels, and the locking member is sleeved on the reusable rod at the lower end of the fixing clip.
[0012] Furthermore, secondary keels are also arranged between the main keels and the floor bottom formwork, and the main keels are in contact with and support the secondary keels.
[0013] Furthermore, the bottom end of each of the anti-floating tie rods is connected to the floor bottom formwork through a tapered plug, and each of the reusable rods passes through the floor bottom formwork and is threadedly connected to the tapered plug.
[0014] Furthermore, a positioning ring is arranged at the connection between the tapered plug and the anti-floating tie rod.
[0015] Furthermore, the locking member includes a first nut and a second nut. The first nut is threadedly connected to the reusable rod, and the second nut is arranged below the first nut and is threadedly connected to the reusable rod.
[0016] Furthermore, limiting cushion strips are arranged at the top and bottom of the filling body, and the filling body is in contact with the upper layer steel bar grid and the lower layer steel bar grid respectively through the limiting cushion strips.
[0017] Due to the above technical solutions adopted by the present utility model, it has the following advantages:
[0018] Compared with the existing technology, for an anti-floating device of a hollow floor slab filling body of the present utility model, by arranging the filling body with a central hole and the tie rod assembly, the tie rod assembly can effectively connect the filling body with the upper layer steel bar grid and the floor bottom formwork together to form an integral structure, enhancing the anti-floating effect of the filling body and improving the stability of the floor slab. The anti-floating device of the present utility model can keep the filling body in a stable position during the concrete pouring process, avoiding quality problems of the floor slab elevation caused by the floating of the filling body, thereby improving the overall quality of the floor slab. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of an anti-floating device of a hollow floor slab filling body of the present utility model.
[0020] Figure 2 It is a schematic structural diagram of a locking member of an anti - floating device for a hollow floor filling body of the present utility model.
[0021] Figure 3 It is a schematic structural diagram of a tie rod assembly of an anti - floating device for a hollow floor filling body of the present utility model.
[0022] Figure 4 It is a top view of an anti - floating device for a hollow floor filling body of the present utility model.
[0023] The reference numerals are as follows: 1 - upper layer steel bar grid, 2 - lower layer steel bar grid, 3 - filling body, 301 - central hole, 4 - floor bottom formwork, 5 - tie rod assembly, 501 - anti - floating tie rod, 502 - turnover rod, 6 - locking member, 601 - first nut, 602 - second nut, 7 - rib beam, 8 - main keel, 9 - fixed clamp, 10 - secondary keel, 11 - positioning ring, 12 - conical plug, 13 - limit cushion strip. Detailed implementation manners
[0024] The following will combine the drawings to detail the preferred embodiments of the present utility model, so as to more clearly understand the purpose, features and advantages of the present utility model. It should be understood that the embodiments shown in the drawings are not a limitation on the scope of the present utility model, but only to illustrate the essential spirit of the technical solution of the present utility model.
[0025] As Figure 1 shown. The present utility model provides an anti - floating device for a hollow floor filling body, including an upper layer steel bar grid 1, a lower layer steel bar grid 2, a plurality of filling bodies 3, a floor bottom formwork 4 and a plurality of tie rod assemblies 5; the upper layer steel bar grid 1 and the lower layer steel bar grid 2 are arranged at intervals up and down; the floor bottom formwork 4 is arranged below the lower layer steel bar grid 2, a plurality of filling bodies 3 are arranged in a rectangular array between the upper layer steel bar grid 1 and the lower layer steel bar grid 2, and a tie rod assembly 5 extending out of both ends thereof is arranged in each filling body 3; one end of each tie rod assembly 5 is connected to the upper layer steel bar grid 1, and the other end extends out of the lower end surface of the floor bottom formwork 4 and is sleeved with a locking member 6 to stop the lower end surface of the floor bottom formwork 4.
[0026] In this embodiment, compared with the traditional anti - floating method, the anti - floating device of the present utility model adopts a reusable tie rod assembly, reducing the consumption of steel bars and iron wires, saving waste, and being beneficial to environmental protection and energy conservation. The anti - floating device is applicable to various types of hollow floor filling bodies and has strong versatility and adaptability.
[0027] Specifically, a rib beam 7 is arranged between every two adjacent filling bodies 3, one end of the rib beam 7 is connected to the upper layer steel bar grid 1, and the other end is connected to the lower layer steel bar grid 2; a central hole 301 penetrating through both ends thereof is axially arranged in the filling body 3.
[0028] As shown Figures 2-3 in the figure. Specifically, each tie rod assembly 5 includes an anti-floating tie rod 501 and a turnover rod 502. The hook part of the anti-floating tie rod 501 is connected to the upper layer steel bar grid 1, the bottom end of the anti-floating tie rod 501 penetrates through the central hole 301 and is connected to the floor bottom formwork 4, the turnover rod 502 penetrates through the floor bottom formwork 4 and is threadedly connected to the bottom end of the anti-floating tie rod 501, and the turnover rod 502 is connected to the floor bottom formwork 4 through a locking member 6.
[0029] In this embodiment, the combined setting of the anti-floating tie rod and the turnover rod can effectively maintain the position of the filling body, prevent it from floating, and prevent the problem of the floor slab elevation caused by the floating of the filling body, ensuring the overall quality and safety of the floor slab; at the same time, this design also has a certain degree of flexibility, and can adapt to different on-site conditions by adjusting the turnover rod, improving the adaptability and convenience of construction.
[0030] As a preference, the vertical projection height of the anti-floating tie rod 501 is preferably 780 mm, and there are thread threads at 40 mm from the bottom end;
[0031] As a preference, the vertical projection height of the turnover rod 502 is preferably 270 mm, and there are thread threads at 150 mm from the bottom end;
[0032] Specifically, main keels 8 are arranged on both sides of each turnover rod 502, and a pair of main keels 8 are longitudinally arranged at the bottom of the floor bottom formwork 4; fixing clamps 9 sleeved on the turnover rod are arranged at the lower ends of the two main keels 8, and a locking member 6 is sleeved on the turnover rod at the lower end of the fixing clamp 9; the fixing clamps 9 are fixedly arranged on both sides of the turnover rod 502; secondary keels 10 are also arranged between the main keels 8 and the floor bottom formwork 4, and the main keels 8 support the secondary keels 10.
[0033] As a preference, the main keel 8 is preferably a double steel pipe as the main keel, the main keel presses against the secondary keel and closely adheres to the turnover rod, and transmits the tension generated by the fixing clamp through the turnover rod to the secondary keel;
[0034] As a preference, the fixing clamp 9 is preferably a U-shaped clamp, and the U-shaped clamp fixes the turnover rod and the double steel pipe, and transmits the tension generated after the turnover rod and the nut are tightened to the double steel pipe;
[0035] As a preference, the secondary keel 10 is preferably a square timber, the double steel pipe as the main keel presses against the square timber and closely adheres to the turnover rod, and transmits the tension generated by the U-shaped clamp through the turnover rod to the square timber as the secondary keel;
[0036] Specifically, the bottom end of each anti-floating tie rod 501 is connected to the floor bottom formwork 4 through a conical plug 12, and each turnover rod 502 passes through the floor bottom formwork 4 and is threadedly connected to the conical plug 12; a positioning ring 14 is arranged at the connection between the conical plug 12 and the anti-floating tie rod 501.
[0037] As a preference, the outer diameter of the positioning ring is preferably 25 mm and the thickness is preferably 2 mm;
[0038] As a preference, the upper base of the conical plug is preferably 20 mm, the lower base is preferably 30 mm, and the height is preferably 30 mm;
[0039] In this embodiment, the positioning ring is to ensure that the conical plug does not displace due to the tensile force of the wire head inside the conical plug; the conical plug is to support the upper surface of the floor formwork, so as to ensure that the overall thickness of the entire hollow floor meets the design requirements, and at the same time isolate the concrete to ensure that the turnover rod can be disassembled smoothly.
[0040] Specifically, the locking member 6 includes a first nut 601 and a second nut 602. The first nut 601 is threadedly connected to the turnover rod 502, and the second nut 602 is arranged below the first nut 601 and is threadedly connected to the turnover rod 502.
[0041] As a preference, the first nut 601 is preferably a nut with a model number of M12;
[0042] As a preference, the second nut 602 is preferably an anti-slip nut with a model number of M12;
[0043] In this embodiment, after the first nut and the turnover rod tighten the mountain-shaped clip during the fastening process, the tensile force can be effectively transmitted, and only then can it be ensured that the anti-floating tie rod tightens the outer-side steel bars of the hollow floor slab surface; the second nut is to prevent the nut from loosening during the vibration of the hollow floor concrete, resulting in the drift of the filler.
[0044] Specifically, limiting cushion strips 13 are arranged at both the top and the bottom of the filler 3, and the filler 3 abuts against the upper steel bar grid 1 and the lower steel bar grid 2 through the limiting cushion strips 13 respectively. The limiting cushion strips are to ensure the accurate installation height of the filler of the hollow floor, so as to ensure that the effective thickness of the concrete structural slabs on the upper and lower layers of the filler meets the design requirements.
[0045] The above-described design scheme can ensure that the gravity of the steel bars plus the concrete on the floor formwork is greater than the buoyancy generated by the concrete on the filler, so as to ensure that the filler does not drift.
[0046] As Figures 1-4 shown. A kind of anti-floating device for the filler of a hollow floor provided by the present utility model has the following specific construction process:
[0047] First, build a long-span slow-bonded prestressed hollow floor formwork. After the formwork is completed and passes the acceptance inspection, install the bottom formwork; after the formwork elevation and dimensions are checked to meet the design requirements, draw the rib beam positioning lines on the formwork surface; use a formwork strip with a width of 50 mm and a thickness of 13 mm to make an isosceles right triangle with an outer dimension of 650 mm × 650 mm. Take the midpoints on the inner and outer sides of the hypotenuse respectively, connect the lines, and then take the midpoint of the connecting line, mark the midpoint, and then drill holes at the marked points with a drill bit. In this way, the anti-floating tie rod positioning scale is made. Use this scale to mark the anti-floating points of the filling body one by one in the same direction, drill holes at the marked points and clean the formwork surface.
[0048] Next, install the rib beams of the hollow floor and the lower layer of steel bar grids (avoiding the anti-floating points), then install the prestressed tendons, spiral bars, and bearing plates. After passing the acceptance inspection, install the bottom limit cushion strips, filling bodies, top limit cushion strips, and the upper layer of steel bar grids; after the upper layer of steel bar grids is tied, construct the anti-floating tie rod assembly of the filling body; tighten the thread head inside the turnover rod and the conical plug. While the turnover rod passes through the formwork bolt hole through the slurry leakage hole (central hole), the anti-floating tie rod hooks the outer steel bars on the surface of the hollow floor slab, and the conical plug automatically clings to the surface bolt hole of the formwork. Install double steel pipes, U-shaped clamps, the first nut, and the second nut vertically in sequence along the longitudinal direction of the square timber.
[0049] In the present utility model, the combination of the positioning ring and the conical plug not only plays a role in controlling the overall thickness of the hollow floor, but also has a force transmission effect of pushing up and pulling down (relative to the formwork surface), and can be better applied to the construction of hollow floors with different thicknesses.
[0050] In the present utility model, the turnover rod is convenient to install and disassemble, can be used repeatedly for multiple turnovers, improves the adaptability and convenience of construction, and forms an overall anti-floating device for the filling body of the hollow floor through combination with the anti-floating tie rod.
Claims
1. A hollow floor filling body anti-floating device, characterized in that: It comprises an upper steel mesh frame (1), a lower steel mesh frame (2), a plurality of filling bodies (3), a floor formwork (4) and a plurality of tie rod assemblies (5); the upper steel mesh frame (1) and the lower steel mesh frame (2) are arranged with a relative spacing up and down; the floor formwork (4) is arranged below the lower steel mesh frame (2); a plurality of the filling bodies (3) are arranged in a rectangular array between the upper steel mesh frame (1) and the lower steel mesh frame (2); each of the filling bodies (3) is provided with a tie rod assembly (5) extending from its two ends; one end of each tie rod assembly (5) is connected to the upper steel mesh frame (1), and the other end thereof extends from the lower end surface of the floor formwork (4) and is sleeved with a locking member (6) to stop the lower end surface of the floor formwork (4).
2. The anti-floating device for hollow floor filling body according to claim 1, characterized in that: A rib beam (7) is provided between each two adjacent filling bodies (3); one end of the rib beam (7) is connected to the upper steel mesh frame (1), and the other end is connected to the lower steel mesh frame (2); and a central hole (301) is provided axially through both ends of the filling body (3).
3. The anti-floating device for hollow floor filling body according to claim 2, characterized in that: Each of the tie rod assemblies (5) comprises an anti-floating tie rod (501) and a circumferential rod (502); the hook portion of the anti-floating tie rod (501) is connected to the upper steel mesh frame (1); the bottom end of the anti-floating tie rod (501) passes through the center hole (301) and is connected to the floor formwork (4); the circumferential rod (502) passes through the floor formwork (4) and is threadedly connected to the bottom end of the anti-floating tie rod (501); the circumferential rod (502) is connected to the floor formwork (4) via the locking member (6).
4. The anti-floating device for hollow floor filling body according to claim 3 is characterized by: Main keels (8) are arranged on both sides of each of the turnover rods (502), and a pair of the main keels (8) are longitudinally arranged at the bottom of the floor formwork (4).
5. The anti-floating device for hollow floor filling body according to claim 4, characterized in that: A pair of main keels (8) are provided at their lower ends with fixing clips (9) sleeved on the circumferential rod, and the locking piece (6) is sleeved on the circumferential rod at the lower end of the fixing clips (9).
6. The anti-floating device for hollow floor filling body according to claim 4, characterized in that: A secondary keel (10) is also provided between the main keel (8) and the floor formwork (4), and the main keel (8) supports the secondary keel (10).
7. The anti-floating device for hollow floor filling body according to claim 3 is characterized by: The bottom end of each anti-floating tie rod (501) is connected to the floor formwork (4) via a conical plug (12), and each turnover rod (502) passes through the floor formwork (4) and is threadedly connected to the conical plug (12).
8. The anti-floating device for hollow floor filling body according to claim 7, characterized in that: A positioning ring (11) is provided at the connection between the conical plug (12) and the anti-floating tie rod (501).
9. The anti-floating device for hollow floor filling body according to claim 4, characterized in that: The locking member (6) comprises a first nut (601) and a second nut (602), wherein the first nut (601) is threadedly connected to the revolving rod (502), and the second nut (602) is arranged below the first nut (601) and is threadedly connected to the revolving rod (502).
10. The anti-floating device for hollow floor filling body according to claim 5, characterized in that: The top and bottom of the filling body (3) are both provided with limiting pads (13), and the limiting pads (13) are respectively in contact with the upper steel mesh frame (1) and the lower steel mesh frame (2).