Mold box anti-floating device of hollow floor system with special-shaped section and construction method of mold box anti-floating device

Abstract

The invention discloses a mold box anti-floating device of a special-shaped section hollow floor system and a construction method of the mold box anti-floating device, and the mold box anti-floating device comprises a pressure equalizing plate which is attached to the top surface of a special-shaped mold box; the pull rod assembly is vertically arranged and comprises a length-adjustable built-in rod and a length-adjustable external rod, the upper end of the built-in rod is connected to the pressure equalizing plate, the middle of the built-in rod penetrates through the special-shaped mold box, and the upper end of the external rod penetrates through a bottom mold of the special-shaped section hollow floor and is detachably connected to the lower end of the built-in rod; a supporting piece is installed on the built-in rod in a position-adjustable mode, and the supporting piece is supported on the bottom die. And the counter-force frame is supported on the bottom die, and the lower end of the external rod is detachably installed on the counter-force frame. The problems that according to an existing fixing mode of the hollow floor mold box, the thickness of hollow floor concrete does not conform to a design value, and potential quality hazards are caused are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a mold box anti-floating device for a hollow floor slab with a special-shaped cross-section and a construction method thereof. Background Art

[0002] The hollow floor formwork is usually fixed by adding anti-floating steel bars on the top and fixing it inside the steel cage with lateral iron wires.

[0003] The fixed formwork box is only connected to the steel mesh. When the floor slab is thick, the formwork box is large and the buoyancy is large, the steel cage may float up as a whole.

[0004] In some projects, the mold boxes are directly tied to the steel cage with steel wire only on the sides. During the pouring process, the concrete has great buoyancy, which can easily cause the binding position to break and the mold box to float.

[0005] The above situations will cause the thickness of the hollow floor concrete to be inconsistent with the design value, posing a quality risk. Summary of the invention

[0006] In order to overcome the defects of the prior art, a mold box anti-floating device for a hollow floor with a special-shaped cross-section and a construction method thereof are provided to solve the problem that the existing fixing method of the hollow floor mold box easily causes the concrete thickness of the hollow floor to be inconsistent with the design value, which poses a quality risk.

[0007] In order to achieve the above-mentioned purpose, a mold box anti-floating device for a hollow floor with a special-shaped cross-section is provided, comprising:

[0008] The pressure equalizing plate is attached to the top surface of the special-shaped mold box;

[0009] A vertically arranged tie rod assembly comprises an inner rod and an outer rod with adjustable lengths, wherein the upper end of the inner rod is connected to the equalizing plate, the middle part of the inner rod passes through the special-shaped mold box, the upper end of the outer rod passes through the bottom mold of the special-shaped hollow floor slab and is detachably connected to the lower end of the inner rod, and the inner rod is adjustable in position with a support member, which is supported by the bottom mold;

[0010] A reaction frame is supported on the bottom mold, and the lower end of the external rod is detachably mounted on the reaction frame.

[0011] Furthermore, the bottom mold is provided with a through hole, a plug is embedded between the built-in rod and the hole wall of the through hole, and the support member is supported by the plug.

[0012] Furthermore, the outer diameter of the plug gradually increases from bottom to top.

[0013] Furthermore, the external rod is a threaded rod, the support member is provided with a threaded hole, and the external rod is screwed into the threaded hole of the support member.

[0014] Furthermore, the built-in rod includes a screw rod and a threaded sleeve, the upper end of the screw rod is connected to the pressure equalizing plate, the upper end of the threaded sleeve is screwed to the lower end of the screw rod, and the upper end of the threaded rod is screwed to the lower end of the threaded sleeve.

[0015] Furthermore, the pressure equalizing plate is provided with a vertically arranged through hole, the screw rod is passed through the through hole, the upper end of the screw rod is screwed into a screw member, and the screw member is pressed against a side of the pressure equalizing plate away from the special-shaped mold box.

[0016] Furthermore, the reaction frame includes a plurality of vertical poles and cross bars, the plurality of vertical poles are arranged in a matrix, the cross bars are connected between the upper parts of adjacent vertical poles, the lower end of the external pole is detachably connected to a shoulder pole, and the two ends of the shoulder pole are supported on two oppositely arranged cross bars on the upper parts of the vertical poles.

[0017] The present invention provides a construction method of a mold box anti-floating device for a hollow floor with a special-shaped cross-section, which is characterized by comprising the following steps:

[0018] Erecting reaction frames;

[0019] Laying a bottom formwork on the reaction frame;

[0020] A special-shaped mold box is mounted on the bottom mold;

[0021] Attach the pressure equalizing plate to the top surface of the special-shaped mold box;

[0022] Adjusting the length of the built-in rod of the tie rod assembly so that the length of the built-in rod is adapted to the distance from the pressure equalizing plate to the bottom mold;

[0023] The upper end of the built-in rod is connected to the pressure equalizing plate, and the middle part of the built-in rod passes through the special-shaped mold box;

[0024] The upper end of the external rod is passed through the bottom mold of the hollow floor slab with a special-shaped cross-section and is detachably connected to the lower end of the internal rod;

[0025] Installing a support member on the built-in rod and adjusting the position of the support member on the built-in rod so that the support member is supported on the bottom mold;

[0026] The lower end of the external rod is detachably mounted on the reaction frame;

[0027] Concrete is poured on the bottom form, and the concrete is covered on the special-shaped form box with fasteners to form a hollow floor slab with a special-shaped cross-section;

[0028] Remove the reaction frame and built-in rod.

[0029] The beneficial effect of the present invention is that the anti-floating device of the mold box of the special-shaped hollow floor of the present invention fixes the special-shaped mold box to the reaction frame at the bottom. The bearing capacity of the reaction frame can meet the buoyancy of the mold box, and there is no contact with the steel cage of the hollow floor, and there is no risk of overall floating. There is no need to arrange anti-floating counterweights on the top of the hollow floor, and the reaction frame does not need to consider the additional load during the construction process, and no additional reinforcement is required. The thickness of the hollow floor concrete cast by the mold box anti-floating device of the special-shaped hollow floor of the present invention matches the design value.

[0030] The mold box of the hollow floor slab with a special-shaped cross-section of the present invention does not require anti-floating counterweights to be provided on the hollow floor slab, and can reduce the labor and machinery costs during the construction process.

[0031] The pressure balancing plate on the top of the mold box of the hollow floor slab with a special-shaped cross section ensures that the top of the special-shaped mold box is evenly stressed and cracking is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1 It is a schematic structural diagram of a mold box anti-floating device for a hollow floor with a special-shaped cross-section according to an embodiment of the present invention.

[0034] Figure 2 The figure is a schematic diagram of the exploded structure of the tie rod assembly according to an embodiment of the present invention.

[0035] Figure 3 It is a schematic diagram of the use status of the mold box anti-floating device of the special-shaped cross-section hollow floor according to an embodiment of the present invention.

[0036] Figure 4 It is a partially enlarged schematic diagram of the use state of the mold box anti-floating device of the special-shaped cross-section hollow floor according to an embodiment of the present invention.

[0037] Figure 5 It is a cross-sectional view of a hollow floor with a special-shaped cross-section according to an embodiment of the present invention.

[0038] Figure 6 The top view of the hollow floor with a special-shaped cross-section according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Reference Figures 1 to 6 As shown, the present invention provides a mold box anti-floating device for a hollow floor with a special-shaped cross-section, comprising: a pressure equalizing plate 1, a tie rod assembly 2 and a reaction frame 4.

[0042] The pressure equalizing plate 1 is attached to the top surface of the special-shaped mold box 5. The shape of the pressure equalizing plate 1 is adapted to the shape of the top surface of the special-shaped mold box. The size of the pressure equalizing plate 1 is smaller than the size of the top surface of the special-shaped mold box. The top surface of the special-shaped mold box is inclined.

[0043] The pull rod assembly 2 is arranged vertically. Specifically, the pull rod assembly includes an inner rod 21 and an outer rod 22 with adjustable lengths.

[0044] In this embodiment, the upper end of the internal rod 21 is connected to the pressure equalizing plate 1. The middle of the internal rod 21 passes through the special-shaped mold box 5. The upper end of the external rod 22 passes through the bottom mold 6 of the special-shaped hollow floor. The upper end of the external rod 22 is detachably connected to the lower end of the internal rod 21. The internal rod 21 is installed with a support member 23 in an adjustable position. The support member 23 is supported on the bottom mold 6.

[0045] The reaction frame 4 is supported on the bottom mold 6. The lower end of the external rod 22 is detachably mounted on the reaction frame 4.

[0046] As a preferred embodiment, the bottom mold 6 is provided with a through hole. A plug 24 is embedded between the built-in rod 21 and the hole wall of the through hole. The support member 23 is supported by the plug 24.

[0047] In this embodiment, the outer diameter of the plug 24 increases gradually from bottom to top. The plug is in a truncated cone shape.

[0048] In this embodiment, the external rod 22 is a threaded rod. The support member 23 is provided with a threaded hole. The external rod 22 is screwed into the threaded hole of the support member 23.

[0049] As a preferred embodiment, the built-in rod 21 includes a screw rod 211 and a threaded sleeve 212. The upper end of the screw rod is connected to the pressure equalizing plate 1, and the upper end of the threaded sleeve is screwed to the lower end of the screw rod. The upper end of the threaded rod is screwed to the lower end of the threaded sleeve.

[0050] In this embodiment, the pressure equalizing plate 1 is provided with a vertical through hole. A screw rod is passed through the through hole. The upper end of the screw rod is screwed to a screw member 213. The screw member is pressed against a side of the pressure equalizing plate 1 away from the special-shaped mold box 5.

[0051] As a preferred embodiment, the reaction frame 4 includes a plurality of vertical rods 41 and a cross bar 42. The plurality of vertical rods are arranged in a matrix. A cross bar is connected between the upper parts of two adjacent vertical rods. A cross bar is connected between the lower parts of two adjacent vertical rods. The lower end of the external rod 22 is detachably connected to a shoulder pole 221. The two ends of the shoulder pole are supported by two cross bars arranged opposite to each other on the upper parts of the vertical rods.

[0052] In this embodiment, there are two shoulder poles for feeding materials. The two shoulder poles are pressed against mountain-shaped clamps on opposite sides. The mountain-shaped clamps are provided with through holes, and the external rods can be movably inserted into the through holes of the two mountain-shaped clamps. At the same time, the end plates of the external rods are screwed with two screw parts, and the two screw parts are pressed against the opposite sides of the two mountain-shaped clamps.

[0053] The present invention provides a construction method of a mold box anti-floating device for a hollow floor with a special-shaped cross-section, comprising the following steps:

[0054] S1, erecting a reaction frame 4;

[0055] S2. Lay the bottom mold 6 on the reaction frame 4.

[0056] S3, setting up the special-shaped mold box 5 on the bottom mold 6.

[0057] S4, attach the pressure equalizing plate 1 to the top surface of the special-shaped mold box 5.

[0058] S5. Adjust the length of the built-in rod 21 of the tie rod assembly 2 so that the length of the built-in rod 21 is adapted to the distance from the pressure equalizing plate 1 to the bottom mold 6.

[0059] S6. Connect the upper end of the built-in rod 21 to the pressure equalizing plate 1 , and the middle part of the built-in rod 21 passes through the special-shaped mold box 5 .

[0060] S7, the upper end of the external rod 22 passes through the bottom form 6 of the hollow floor with a special-shaped cross-section and is detachably connected to the lower end of the internal rod 21.

[0061] S8, installing the support member 23 on the built-in rod 21 and adjusting the position of the support member 23 on the built-in rod 21 so that the support member 23 is supported on the bottom mold 6.

[0062] S9, detachably mount the lower end of the external rod 22 on the reaction frame 4.

[0063] S10, pouring concrete 7 on the bottom form 6, and the concrete 7 is covered on the special-shaped mold box 5 with a fixed part to form a hollow floor slab with a special-shaped cross-section.

[0064] S11, remove the reaction frame 4 and the built-in rod 21.

[0065] The mold box anti-floating device for a hollow floor slab with a special-shaped cross-section of the present invention is suitable for hollow floors, and when the size of the special-shaped mold box in the hollow floor slab is large, the buoyancy is large during the concrete pouring process.

[0066] The maximum size of the special-shaped mold box is about 680mm×680mm×1000mm, and the buoyancy of a single special-shaped mold box is 1156kg.

[0067] The anti-floating device for the mold box of the hollow floor with a special-shaped cross-section of the present invention fixes the special-shaped mold box to the reaction frame at the bottom. The bearing capacity of the reaction frame can meet the buoyancy of the mold box, and there is no contact with the steel cage of the hollow floor, and there is no risk of overall floating. There is no need to arrange anti-floating counterweights on the top of the hollow floor, and the reaction frame does not need to consider the additional load during the construction process, and no additional reinforcement is required.

[0068] The mold box of the hollow floor slab with a special-shaped cross-section of the present invention does not require anti-floating counterweights to be provided on the hollow floor slab, and can reduce the labor and machinery costs during the construction process.

[0069] The pressure balancing plate on the top of the mold box of the hollow floor slab with a special-shaped cross section ensures that the top of the special-shaped mold box is evenly stressed and cracking is avoided.

[0070] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. A mold box anti-floating device for a hollow floor with a special-shaped cross-section, characterized in that: include: The pressure equalizing plate is attached to the top surface of the special-shaped mold box; A vertically arranged tie rod assembly comprises an inner rod and an outer rod with adjustable lengths, wherein the upper end of the inner rod is connected to the equalizing plate, the middle part of the inner rod passes through the special-shaped mold box, the upper end of the outer rod passes through the bottom mold of the special-shaped hollow floor slab and is detachably connected to the lower end of the inner rod, and the inner rod is adjustable in position with a support member, which is supported by the bottom mold; A reaction frame is supported on the bottom mold, and the lower end of the external rod is detachably mounted on the reaction frame.

2. The mold box anti-floating device for hollow floor with special-shaped cross-section according to claim 1 is characterized in that: The bottom mold is provided with a through hole, a plug is embedded between the built-in rod and the hole wall of the through hole, and the support member is supported by the plug.

3. The mold box anti-floating device for hollow floor with special-shaped cross-section according to claim 2 is characterized in that: The outer diameter of the plug increases gradually from bottom to top.

4. The mold box anti-floating device for hollow floor with special-shaped cross-section according to claim 3 is characterized in that: The external rod is a threaded rod, the support member is provided with a threaded hole, and the external rod is screwed into the threaded hole of the support member.

5. The mold box anti-floating device for hollow floor with special-shaped cross-section according to claim 4 is characterized in that: The built-in rod includes a screw rod and a threaded sleeve, the upper end of the screw rod is connected to the pressure equalizing plate, the upper end of the threaded sleeve is screwed to the lower end of the screw rod, and the upper end of the threaded rod is screwed to the lower end of the threaded sleeve.

6. The mold box anti-floating device for hollow floor with special-shaped cross-section according to claim 5 is characterized in that: The pressure equalizing plate is provided with a vertical through hole, the screw rod is passed through the through hole, the upper end of the screw rod is screwed on a screw member, and the screw member is pressed against a side of the pressure equalizing plate away from the special-shaped mold box.

7. The mold box anti-floating device for hollow floor with special-shaped cross-section according to claim 1 is characterized in that: The reaction frame includes a plurality of vertical poles and a cross bar, wherein the plurality of vertical poles are arranged in a matrix, the cross bars are connected between the upper parts of adjacent vertical poles, the lower end of the external pole is detachably connected to a shoulder pole, and the two ends of the shoulder pole are supported on two oppositely arranged cross bars on the upper parts of the vertical poles.

8. A construction method for the mold box anti-floating device of a hollow floor with a special-shaped cross-section as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Erecting reaction frames; Laying a bottom formwork on the reaction frame; A special-shaped mold box is mounted on the bottom mold; Attach the pressure equalizing plate to the top surface of the special-shaped mold box; Adjusting the length of the built-in rod of the tie rod assembly so that the length of the built-in rod is adapted to the distance from the pressure equalizing plate to the bottom mold; The upper end of the built-in rod is connected to the pressure equalizing plate, and the middle part of the built-in rod passes through the special-shaped mold box; The upper end of the external rod is passed through the bottom mold of the hollow floor slab with a special-shaped cross-section and is detachably connected to the lower end of the internal rod; Installing a support member on the built-in rod and adjusting the position of the support member on the built-in rod so that the support member is supported on the bottom mold; The lower end of the external rod is detachably mounted on the reaction frame; Concrete is poured on the bottom form, and the concrete is covered on the special-shaped form box with fasteners to form a hollow floor slab with a special-shaped cross-section; Remove the reaction frame and built-in rod.

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