Pouring method of concrete floor

Abstract

The pouring method of the concrete floor comprises the steps that firstly, a reinforcement cage is provided and placed in a pouring pool, and lifting steel bars are not welded to the reinforcement cage any more; secondly, a plurality of supporting connecting pieces are provided, and the supporting connecting pieces are evenly arranged on the reinforcement cage; thirdly, concrete slurry is provided, and the concrete slurry is injected into the pouring pool so that the concrete slurry can submerge all the reinforcement cages; 4, when the concrete slurry reaches the preset height, pouring is stopped, and then standing is conducted to enable the concrete to be solidified and formed; and fifthly, the formed concrete floor is separated from the pouring pool. According to the pouring method of the concrete floor slab, lifting steel bars do not need to be welded, the novel supporting connecting pieces are used, the supporting connecting pieces and the steel reinforcement cage are poured together through the pouring process, and therefore the pouring process is simpler, and after pouring is completed, the quick connectors of the supporting connecting pieces are exposed, so that the construction efficiency is improved. And the concrete floor can be conveniently clamped by an external tool to lift the concrete floor.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a method for casting a precast concrete floor slab. Background Art

[0002] When pouring concrete floor (prestressed concrete thin slab composite floor), it is necessary to fix the steel cage, and the lower part of the steel cage is usually supported by a support, so that there is a pouring space between the steel cage and the pouring bottom surface, so as to ensure that the steel cage will not be exposed, thereby improving the pouring strength and reducing the possibility of oxidation of the steel cage in contact with air. At the same time, the upper part of the steel cage needs to be welded with lifting steel bars (such as the triangular combined steel bars 103 in the prior art CN117166662B, and the steel truss 3 in the prior art CN108661225B), and the lifting steel bars play a bending resistance role when lifting the concrete floor, ensuring that the lifting process will not cause bending damage to the concrete floor itself, but these lifting steel bars are all made of steel bar materials, and adopt a welding process, so a large amount of steel bar materials are used, and manual or machine welding is required, the process manufacturing cost is high, and the steel bar consumables are also used a lot, resulting in waste of manpower and material resources, which does not meet the national policy requirements of energy conservation and emission reduction.

[0003] In summary, the concrete floor slab of the prior art uses ordinary support members to support the steel cage, and the support member structure is simple. The lifting steel bars used need to be welded together with the steel cage, which is difficult to connect and fix during lifting, and wastes steel bar materials (usually accounting for about 20% of the total steel bar consumables), which does not meet the principle of energy conservation and environmental protection. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a casting method of a concrete floor slab and a concrete floor slab thereof, so as to solve the problem that before casting the concrete floor slab, it is necessary to weld and pull the steel bars on the steel cage, which leads to a long process time and serious waste.

[0005] In order to solve the above technical problems, the present invention provides a method for pouring a concrete floor slab, comprising:

[0006] Step 1: provide a steel cage, place the steel cage in a casting pool, and no longer weld lifting steel bars on the steel cage; the casting pool is rectangular in shape, and the aspect ratio is greater than 2; the shape of the steel cage is adapted to the shape of the casting pool, and the steel cage is welded in a crisscross manner with transverse steel bars and longitudinal steel bars to form a mesh;

[0007] Step 2: Provide a plurality of support connectors, which are divided into two groups of equal or similar numbers. Each group of support connectors is linearly and evenly distributed along the longitudinal direction of the steel cage, and the support connectors are evenly arranged on the steel cage, and the steel bars of the steel cage are placed in the connecting elbows of the support connectors; wherein the support connectors need to be connected to the lower one of the transverse steel bars and the longitudinal steel bars, and the support connectors are vertically upward, and the head heights of all the support connectors are consistent;

[0008] Step 3, providing concrete slurry, and injecting the concrete slurry into the casting pool, so that the concrete slurry submerges all the steel cages;

[0009] Step 4: When the concrete slurry reaches a preset height, stop pouring, and then let the concrete stand to solidify and form; wherein the preset height of the concrete slurry is lower than the head height of the supporting connector, so that the head of the supporting connector is exposed from the surface of the concrete slurry;

[0010] Step 5: Separate the formed concrete floor slab from the casting pool.

[0011] Before step 1, the method further includes evenly applying a release agent on the surface of the casting pool;

[0012] and, placing spacers in the casting pool so that the steel cage can be supported by the spacers, wherein the height of the spacers is the same as the casting height of the steel cage in the casting pool;

[0013] Correspondingly, in step two, after the support connector is connected to the steel cage, a step of removing the spacer is also included.

[0014] In step 2, when the transverse reinforcement is located below the longitudinal reinforcement, the connecting elbow of the support connector is clamped on the transverse reinforcement; when the longitudinal reinforcement is located below the transverse reinforcement, the connecting elbow of the support connector is clamped on the longitudinal reinforcement.

[0015] In step 2, the supporting connector includes a supporting portion, a connecting elbow, a column and a quick connector, wherein: the supporting portion is located at the bottom and is used to support the bottom surface of the casting pool; the connecting elbow is supported by the supporting portion, and the connecting elbow has a lateral or upward opening so that it can be clamped with the transverse steel bars or longitudinal steel bars of the steel cage; the column is connected to the upper part of the connecting elbow, the column is vertically upward, the bottom of the column is provided with an expansion portion, and the top is provided with a scale line; the quick connector is connected to the top of the column, and is used to connect with an external quick-connect device.

[0016] Step 2 also includes adjusting the quick connectors so that the directions of all quick connectors remain consistent; the external quick connector device can be connected to the quick connector in a clamping manner, a sliding groove manner, or other manners.

[0017] Step three also includes observing the scale line on the column, and stopping pouring when the concrete slurry reaches the preset height corresponding to the scale line. The preset height is 40-60 mm, and the zero point height of the preset height is the height of the bottom surface of the pouring pool.

[0018] Step four includes watering the concrete surface regularly and quantitatively to maintain the moisture of the concrete surface.

[0019] The supporting connector is formed by integral casting.

[0020] The supporting connecting member is made of an inorganic material that is resistant to stretching.

[0021] The supporting connecting piece is made of nylon, plastic, rubber or a combination thereof.

[0022] The support portion is a trapezoidal, conical or square base, and the bottom surface of the base is a plane or is configured as a concave suction cup.

[0023] The circumferential size of the expansion portion is larger than that of other parts of the column, thereby forming a pull-out resistant shape that is larger at the bottom and smaller at the top.

[0024] The pouring pool adopts a detachable structure;

[0025] Correspondingly, step five also includes opening the side panels on both sides of the casting pool, and then separating the concrete floor slab from the bottom plate of the casting pool.

[0026] The present invention also provides a concrete floor slab, which is cast and formed by the casting method of the concrete floor slab described above.

[0027] The present invention provides a method for casting a concrete floor slab, which no longer requires welding of lifting steel bars, and uses a new type of support connector. The support connector is cast together with the steel cage through a casting process, so that the casting process is simpler. After the casting is completed, the quick connector of the support connector is exposed, which is convenient for external tools to clamp and lift the concrete floor slab, thereby completely saving the material cost of the lifting steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a process flow chart of the method for casting a concrete floor slab according to an embodiment of the present invention.

[0029] Figure 2 It is a schematic structural diagram of the supporting connecting member described in an embodiment of the present invention.

[0030] Figure 3 This is a schematic structural diagram of the supporting connector according to an embodiment of the present invention being cast in a concrete layer.

[0031] Figure 4 This is a layout diagram of the steel cage and the supporting connectors thereon according to an embodiment of the present invention.

[0032] In the figure:

[0033] 10-Support connector;

[0034] 11- supporting part;

[0035] 12-Connecting elbow;

[0036] 13-column; 131-expansion portion; 132-scale line;

[0037] 14-Quick connector;

[0038] 20-concrete slurry;

[0039] 30-reinforcement cage; 31-transverse reinforcement; 32-longitudinal reinforcement;

[0040] 40-casting pool; 41-pad;

[0041] 50-Concrete floor slab. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] like Figure 1-4 As shown, the present invention provides a method for casting a concrete floor slab, which is a prefabricated floor slab formed by casting concrete, and the casting method mainly includes the following steps:

[0046] Step 1, providing a steel cage 30 and a pad 41, at least four pads 41, firstly placing the pads in a dispersed manner in the casting pool 40, and then placing the steel cage 30 in the casting pool 40 and supporting the bottom of the steel cage 30 by the pad 41, and no longer welding the lifting steel bars on the steel cage 30; the casting pool 30 is rectangular in shape, and the aspect ratio is greater than 2 (the same as the length and width of the concrete floor 50); the shape of the steel cage 30 is adapted to the shape of the casting pool 40, and the steel cage 30 is welded in a criss-cross manner with the transverse steel bars 31 and the longitudinal steel bars 32 to form a mesh;

[0047] Step 2: Provide a plurality of support connectors 10, which are divided into two groups of equal or similar numbers, and each group of support connectors 10 is linearly and evenly distributed along the longitudinal direction of the steel cage 30, and the support connectors 10 are evenly arranged on the steel cage 30, and the steel bars of the steel cage 30 are placed in the connecting elbows 12 of the support connectors, and then the pads 41 are removed, so that the steel cage 30 is supported by the support connectors 10 as a whole; wherein the support connectors 10 need to be connected to the lower one of the transverse steel bars 31 and the longitudinal steel bars 32, and the support connectors 10 are vertically upward, and the head heights of all the support connectors 10 are consistent;

[0048] Step 3, providing concrete slurry, and injecting the concrete slurry into the casting pool 40, so that the concrete slurry 20 submerges all the steel bars 30;

[0049] Step 4: When the concrete slurry 20 reaches a preset height, stop pouring, and then let the concrete stand to solidify and form; wherein the preset height of the concrete slurry 20 is lower than the head height of the supporting connector, so that the head of the supporting connector 10 is exposed from the surface of the concrete slurry 20, thereby facilitating connection using an external quick-connect device;

[0050] Step 5: Separate the formed concrete floor slab 50 from the casting pool 30. When the casting pool 30 adopts a detachable splicing structure, the side panels of the casting pool 30 can be disassembled first, and then the concrete floor slab 50 can be separated from the bottom plate (the concrete floor slab can be lifted by an external lifting tool, and an ordinary lifting device can be used, or a special lifting device of our company can be used).

[0051] Before step 1, the method also includes evenly applying a release agent on the surface of the casting pool 40 to facilitate separation of the concrete floor slab from the casting pool after it is formed.

[0052] In step 2, when the transverse reinforcement 30 is located below the longitudinal reinforcement 32, the connecting elbow 12 of the supporting connector 10 is clamped on the transverse reinforcement 31; when the longitudinal reinforcement 32 is located below the transverse reinforcement 31, the connecting elbow 12 of the supporting connector 10 is clamped on the longitudinal reinforcement 32. In this way, the lower reinforcement can bear the force and can be dispersedly supported by the upper reinforcement, so that the overall support is more solid. In the process of lifting the concrete floor slab by external lifting equipment, the force can be reasonably dispersed, avoiding local stress concentration and causing floor slab damage.

[0053] In step 2, the support connector 10 includes a support portion 11, a connecting elbow 12, a column 13 and a quick connector 14, wherein: the support portion 11 is located at the bottom and is used to support the bottom surface of the casting pool 40; the connecting elbow 12 is supported by the support portion 11, and the connecting elbow 12 has a lateral or upward opening so as to be able to clamp with the transverse steel bars 31 or the longitudinal steel bars 32 of the steel cage 30; the column 13 is connected to the upper part of the connecting elbow 12, the column 13 is vertically upward, the bottom of the column 13 is provided with an expansion portion 131, and the top is provided with a scale line 132; the quick connector 14 is connected to the top of the column for connecting with an external quick connector. The scale line helps to remind the pouring construction workers of the pouring height, so that the pouring thickness of the concrete floor slab can be kept consistent. The entire supporting connector 10 can provide support and positioning for the steel cage 30 before pouring, so that the steel cage 30 can determine the pouring height; after pouring is completed, the steel cage 30 can be lifted through the subject 13 and the connecting elbow 12, so that the concrete floor can be lifted vertically, thus saving the conventional welding process of lifting the steel bars, saving the material cost of lifting the steel bars, and ensuring that the steel cage will not be deformed or damaged due to uneven force during the lifting process.

[0054] Step 2 also includes adjusting the quick connectors 14 so that the directions of all the quick connectors 14 remain consistent; the external quick connector can be connected to the quick connector 14 in a clamping manner, a sliding groove manner, or other manners.

[0055] Step three also includes observing the scale line 132 on the column, and stopping pouring when the concrete slurry reaches the preset height corresponding to the scale line. The preset height is 40-60 mm, and the zero point height of the preset height is the height of the bottom surface of the pouring pool.

[0056] Step four includes watering the concrete surface regularly and quantitatively to maintain the moisture of the concrete surface.

[0057] The supporting connector is formed by integral casting.

[0058] The supporting connecting member is made of an inorganic material that is resistant to stretching.

[0059] The supporting connecting piece is made of nylon, plastic, rubber or a combination thereof.

[0060] The support portion is a trapezoidal, conical or square base, and the bottom surface of the base is a plane or is configured as a concave suction cup.

[0061] The circumferential size of the expansion portion is larger than that of other parts of the column, thereby forming a pull-out resistant shape that is larger at the bottom and smaller at the top.

[0062] The pouring pool adopts a detachable structure;

[0063] Correspondingly, step five also includes opening the side panels on both sides of the casting pool, and then separating the concrete floor slab from the bottom plate of the casting pool.

[0064] The present invention also provides a concrete floor slab, which is cast and formed by the casting method of the concrete floor slab described above.

[0065] The present invention provides a method for casting a concrete floor slab, which no longer requires welding of lifting steel bars, and uses a new type of support connector. The support connector is cast together with the steel cage through a casting process, so that the casting process is simpler. After the casting is completed, the quick connector of the support connector is exposed, which is convenient for external tools to clamp and lift the concrete floor slab, thereby completely saving the material cost of the lifting steel bars.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for pouring a concrete floor slab, characterized in that: include: Step 1: provide a steel cage, place the steel cage in a casting pool, and no longer weld lifting steel bars on the steel cage; the casting pool is rectangular in shape, and the aspect ratio is greater than 2; the shape of the steel cage is adapted to the shape of the casting pool, and the steel cage is welded in a crisscross manner with transverse steel bars and longitudinal steel bars to form a mesh; Step 2: provide a plurality of support connectors, which are divided into two groups of equal or similar numbers, wherein each group of support connectors is linearly and evenly distributed along the longitudinal direction of the steel cage, and the support connectors are evenly arranged on the steel cage, and the steel bars of the steel cage are placed in the connecting elbows of the support connectors; The supporting connector must be connected to the lower one of the transverse reinforcement and the longitudinal reinforcement, and the supporting connector must be vertically upward, and the heads of all supporting connectors must be at the same height; Step 3, providing concrete slurry, and injecting the concrete slurry into the casting pool, so that the concrete slurry submerges all the steel cages; Step 4: When the concrete slurry reaches a preset height, stop pouring, and then let the concrete stand to solidify and form; wherein the preset height of the concrete slurry is lower than the head height of the supporting connector, so that the head of the supporting connector is exposed from the surface of the concrete slurry; Step 5: Separate the formed concrete floor slab from the casting pool.

2. The pouring method according to claim 1, characterized in that: Before step 1, the method further includes evenly applying a release agent on the surface of the casting pool; and, placing spacers in the casting pool so that the steel cage can be supported by the spacers, wherein the height of the spacers is the same as the casting height of the steel cage in the casting pool; Correspondingly, in step two, after the support connector is connected to the steel cage, a step of removing the spacer is also included.

3. The pouring method according to claim 1, characterized in that: In step 2, when the transverse reinforcement is located below the longitudinal reinforcement, the connecting elbow of the support connector is clamped on the transverse reinforcement; when the longitudinal reinforcement is located below the transverse reinforcement, the connecting elbow of the support connector is clamped on the longitudinal reinforcement.

4. The pouring method according to claim 1, characterized in that: In step 2, the supporting connector includes a supporting portion, a connecting elbow, a column and a quick connector, wherein: the supporting portion is located at the bottom and is used to support the bottom surface of the casting pool; the connecting elbow is supported by the supporting portion, and the connecting elbow has a lateral or upward opening so that it can be clamped with the transverse steel bars or longitudinal steel bars of the steel cage; the column is connected to the upper part of the connecting elbow, the column is vertically upward, the bottom of the column is provided with an expansion portion, and the top is provided with a scale line; the quick connector is connected to the top of the column, and is used to connect with an external quick-connect device. Step 2 also includes adjusting the quick connectors so that the directions of all quick connectors remain consistent; the external quick connector device can be connected to the quick connector in a clamping manner, a sliding groove manner, or other manners.

5. The pouring method according to claim 4, characterized in that: Step three also includes observing the scale line on the column, and stopping pouring when the concrete slurry reaches the preset height corresponding to the scale line. The preset height is 40-60 mm, and the zero point height of the preset height is the height of the bottom surface of the pouring pool.

6. The pouring method according to claim 1, characterized in that: Step four includes watering the concrete surface regularly and quantitatively to maintain the moisture of the concrete surface.

7. The pouring method according to any one of claims 1 to 6, characterized in that: The supporting connector is formed by integral casting. The supporting connecting member is made of an inorganic material that is resistant to stretching. The supporting connecting piece is made of nylon, plastic, rubber or a combination thereof.

8. The pouring method according to claim 7, characterized in that: The support portion is a trapezoidal, conical or square base, and the bottom surface of the base is a plane or is configured as a concave suction cup. The circumferential size of the expansion portion is larger than that of other parts of the column, thereby forming a pull-out resistant shape that is larger at the bottom and smaller at the top.

9. The pouring method according to claim 7, characterized in that: The pouring pool adopts a detachable structure; Correspondingly, step five also includes opening the side panels on both sides of the casting pool, and then separating the concrete floor slab from the bottom plate of the casting pool.

10. A concrete floor slab cast by the casting method for a concrete floor slab according to any one of the above claims.

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