Concrete column peripheral epoxy floor anti-cracking structure

Abstract

The utility model relates to a kind of concrete stand column periphery epoxy floor anti-cracking structure, including stand column, base, floor and buffer groove;Floor is laid on base and is adhered to stand column around, floor includes leveling layer, wear layer and surface layer sequentially laid from below to above;Annular buffer groove around stand column is opened on floor, buffer groove penetrates leveling layer, and floor is divided into two regions inside and outside;Buffer layer and closure layer are sequentially filled and laid in buffer groove from below to above, and the hardness of closure layer is greater than filling layer, so that buffer zone of lower soft upper hard is formed in buffer groove.The utility model buffer groove penetrates the leveling layer of floor, forms structural section isolation, and floor is divided into two regions inside and outside, and the stress generated by the deformation of floor extrusion is absorbed by flexible buffer layer at bottom, and top high elastic closure layer plays the role of stress diffusion and surface protection, and the anti-cracking performance of floor around stand column is improved.

Description

Technical Field

[0001] This utility model relates to the field of flooring construction technology, specifically to an anti-cracking structure for epoxy flooring around concrete columns. Background Technology

[0002] In projects such as large underground parking lots, the floor structure often needs to be constructed in a ring-like manner with the columns in the main building, forming a column-slab junction area. In actual projects, since the leveling layer in the floor is mainly formed by secondary pouring of materials such as concrete, it has natural shrinkage, temperature changes, and deformation requirements, while the base of the columns, due to its high rigidity, has almost no variables.

[0003] After the floor is laid and formed, it will undergo slight shrinkage and deformation in the plane due to factors such as temperature changes and material shrinkage. Since the rigidity of the column structure is much greater than that of the floor, it cannot deform with the floor, causing the surrounding area to become a stress retention zone. Stress rebound is likely to occur at the interface. If there is no structural softening or buffer transition to release the stress, stress rebound or warping accumulation is very likely to form here, resulting in problems such as arching and cracking. Over time, radial cracks will also appear in a ring-shaped pattern extending outward from the edge of the column base. This not only affects the structural integrity and safety of the floor, but also damages the appearance of the floor and reduces the overall durability and maintenance efficiency of the floor.

[0004] Therefore, it is necessary to study a crack-resistant epoxy flooring structure around concrete columns. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a crack-resistant epoxy flooring structure around concrete columns, which can effectively solve the problem of cracking caused by the flooring rebounding due to the pressure exerted on the columns during expansion and contraction.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A crack-resistant epoxy flooring structure around a concrete column includes the column, a base, the flooring, and a buffer trough. The floor is laid on the base and wrapped around and attached to the column. The floor includes a leveling layer, a wear-resistant layer and a surface layer laid from bottom to top. The floor is provided with an annular buffer groove that surrounds the column. The buffer groove penetrates the leveling layer and divides the floor into two areas, inner and outer. The buffer groove is filled with a buffer layer and a sealing layer from bottom to top. The sealing layer is harder than the filling layer, so that a buffer zone with a soft bottom and a hard top is formed in the buffer groove.

[0007] Furthermore, a limiting layer is also filled between the buffer layer and the sealing layer. The hardness of the limiting layer is greater than that of the buffer layer but less than that of the sealing layer.

[0008] Furthermore, the surface layer covers the sealing layer, forming a continuous floor surface.

[0009] Furthermore, the cross-section of the buffer groove is a trapezoid that is wider at the top and narrower at the bottom.

[0010] Furthermore, it also includes support ribs, which are spaced apart within the buffer layer. One end of each support rib is fixed to one side wall of the buffer groove, while the other end is horizontally cantilevered in the buffer layer and spaced apart from the other side wall of the buffer groove.

[0011] Furthermore, threaded sleeves are provided inside both sides of the buffer groove, and one end of the support rib is threadedly connected to the threaded sleeve.

[0012] Furthermore, the buffer groove is circular or polygonal in shape surrounding the column.

[0013] Furthermore, an interface layer is laid between the substrate and the leveling layer.

[0014] The beneficial effects of the above technical solution are: This utility model's buffer groove penetrates the leveling layer of the floor, forming a structural cross-section isolation that divides the floor into inner and outer areas. This effectively weakens the continuity of the overall rigidity of the floor and absorbs the stress generated by the floor's compression deformation through the flexible buffer layer at the bottom. The high-elastic sealing layer at the top plays a role in stress diffusion and surface protection, dynamically releasing local stress accumulated due to the restricted free contraction of the floor. This prevents the floor from exerting a strong compressive reaction on the edge of the column, effectively solving the problem of cracking caused by the floor rebounding under the pressure of the column during expansion and contraction. As a result, it effectively avoids structural damage such as uncontrolled cracks, surface edge bursting, or bulging in the column base area, and improves the crack resistance of the floor around the column. Attached Figure Description

[0015] Figure 1 This is a side sectional view of the present invention; Figure 2 This is a top view of the present invention.

[0016] Attached diagram labels: 1 for column, 2 for base, 3 for floor, 4 for buffer groove, 5 for support rib, 6 for threaded sleeve, 7 for interface layer, 301 for leveling layer, 302 for wear-resistant layer, 303 for surface layer, 401 for buffer layer, 402 for sealing layer, 403 for limiting layer. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: This embodiment aims to provide a crack-resistant epoxy flooring structure around concrete columns, which is mainly used in the construction of underground parking lot flooring 3. It addresses the problem of cracking caused by the flooring 3 rebounding due to the pressure exerted on the column 1 during expansion and contraction.

[0018] A crack-resistant structure for an epoxy floor 3 surrounding a concrete column 1, such as... Figure 1 and Figure 2 It includes columns 1, base 2, floor 3, and buffer trough 4.

[0019] Flooring 3 is laid on the base 2 and surrounds and adheres to the column 1. Flooring 3 includes a leveling layer 301, a wear-resistant layer 302, and a surface layer 303 laid sequentially from bottom to top. Before laying the leveling layer 301, the base layer needs to be roughened. A high-speed flooring 3 professional milling machine should be used to mill the base layer structure surface to remove surface laitance and ash. Generally, 2-3 passes are appropriate, with manual removal at the edges and corners. After roughening the base layer, a high-pressure water gun is used to wash the base layer.

[0020] An interface layer 7 is laid between the base 2 and the leveling layer 301. The interface layer 7 uses a waterproof interface agent, which combines spraying and brushing to increase the number of repetitions and ensure that the interface agent can fully contact the base layer until it seals the capillary pores of the concrete, thereby enhancing the adhesion of the floor 3 and preventing water vapor from seeping into the bottom.

[0021] Leveling layer 301 is the main crack-resistant layer, bearing the main load. It is made of steel fiber reinforced concrete and has the characteristics of crack resistance, flexural strength, and shrinkage resistance. Before the initial setting of leveling layer 301, a well-mixed wear-resistant material (emery) is spread to form wear-resistant layer 302. It is spread in two stages: the first stage covers two-thirds of the thickness, and the second stage covers one-third of the thickness. On the ground after the first layer of material is spread, the construction workers first use a wooden mold to spread the accumulated hardener, and then use a large trowel to smooth and rub the ground. After the wear-resistant material absorbs a certain amount of moisture, it is troweled with a grinding machine. After the first layer of emery is spread and troweled, the second layer of spreading and troweling is carried out.

[0022] After the wear-resistant layer 302 is compacted and polished, the wear-resistant layer 302 is cleaned and pretreated, then two coats of sealing and curing polishing agent are applied, and a fine grinding process is performed to form the surface layer 303.

[0023] A circular buffer groove 4 is formed around the column 1 on the floor 3. The buffer groove 4 is circular, but in other embodiments, it can be polygonal for ease of construction. The buffer groove 4 penetrates the leveling layer 301, meaning the bottom of the buffer chamber is on the interface layer 7, dividing the floor 3 into inner and outer areas. In specific construction, a pre-made circular template can be designed in advance, and the groove can be reserved when laying concrete on the leveling layer 301, forming the buffer groove 4 after pouring.

[0024] The buffer groove 4 is filled with a buffer layer 401 and a sealing layer 402 from bottom to top. Specifically, the buffer layer 401 is made of high-density foam board or EVA pad, which has the characteristics of flexible buffering and rebound, and is used to absorb micro-displacement and slight arching deformation.

[0025] The sealing layer 402 uses epoxy high-elastic sealant, which has a higher hardness than the filler layer, and is highly elastic, has good shrinkage, and high surface strength. It can withstand light rolling or stretching and can resist the collapse and sinking of the surface layer 303.

[0026] A limiting layer 403 is also laid between the buffer layer 401 and the sealing layer 402. The limiting layer 403 is made of glass fiber reinforced rubber tape or medium-hardness rubber strip, with a hardness greater than that of the buffer layer 401 but less than that of the sealing layer 402, forming a structure with gradually increasing hardness from bottom to top. This is used to transition hardness changes and limit the extreme deformation of the buffer groove 4, preventing the formation of cavities between the buffer layer 401 and the sealing layer 402. In other embodiments, the limiting layer 403 may be omitted, or limiting layers 403 with more hardness levels may be provided to enhance the effect of hardness transition.

[0027] The buffer trough 4 forms a buffer zone with a soft bottom and a hard top. This is mainly because the shrinkage stress of concrete accumulates first from the bottom, and the arching force is transmitted from bottom to top. The buffer layer 401 at the bottom of the buffer trough 4 must be able to be compressed, deformed, and absorb energy, thus the buffer chamber has the lowest hardness. However, the top of the buffer trough 4 is also made of the same material, which means that the top cannot effectively resist deformation. On the one hand, the deformation that occurs in the lower layer will be greater and more likely to be reflected in the top, making the surface layer 303 more prone to cracking. On the other hand, it will make the compressive strength of the surface layer 303 poor, making it prone to sinking.

[0028] In order to further prevent the buffer groove 4 from sinking due to external forces from above, in this embodiment, the cross-section of the buffer groove 4 is set as a trapezoid with a wider top and a narrower bottom to counteract the pressure from above.

[0029] To further prevent the buffer groove 4 from sinking due to external forces from above, this embodiment also includes support ribs 5. The support ribs 5 are spaced apart within the buffer layer, with one end fixed to one side wall of the buffer groove. Specifically, threaded sleeves 6 are pre-embedded within the two side walls of the buffer groove, i.e., within the leveling layer 301. The threaded sleeves 6 are distributed within the buffer layer, with one end of the support rib 5 threadedly connected to the threaded sleeve 6, and the other end horizontally cantilevered within the buffer layer, maintaining a gap from the other side wall of the buffer groove. Support ribs 5 are arranged in a ring at intervals on both side walls of the buffer groove, forming two rows vertically to create a skeletal support in the buffer layer, improving its longitudinal compressive strength without affecting its lateral deformation capacity. During buffer layer construction, the high-density foam board or EVA pad can be divided into several sections and filled segment by segment between the support ribs 5, avoiding the support ribs 5.

[0030] In this embodiment, the surface layer 303 is constructed last to cover the top of the sealing layer 402, forming a continuous floor surface 3. In other embodiments, the surface layer 303 above the sealing layer 402 may not be provided.

Claims

1. A crack-resistant epoxy flooring structure around a concrete column, characterized in that: Includes columns, base, floor, and buffer zone; The floor is laid on the base and wrapped around and attached to the column. The floor includes a leveling layer, a wear-resistant layer and a surface layer laid from bottom to top. The floor is provided with an annular buffer groove that surrounds the column. The buffer groove penetrates the leveling layer and divides the floor into two areas, inner and outer. The buffer groove is filled with a buffer layer and a sealing layer from bottom to top. The sealing layer is harder than the filling layer, so that a buffer zone with a soft bottom and a hard top is formed in the buffer groove.

2. The anti-cracking structure for epoxy flooring around a concrete column according to claim 1, characterized in that: A limiting layer is also laid between the buffer layer and the sealing layer. The hardness of the limiting layer is greater than that of the buffer layer but less than that of the sealing layer.

3. The anti-cracking structure of epoxy flooring around a concrete column according to claim 1, characterized in that: The surface layer covers the sealing layer, forming a continuous floor surface.

4. The anti-cracking structure of epoxy flooring around a concrete column according to claim 1, characterized in that: The cross-section of the buffer groove is a trapezoid that is wider at the top and narrower at the bottom.

5. The anti-cracking structure of epoxy flooring around a concrete column according to claim 1, characterized in that: It also includes support ribs, which are spaced apart in the buffer layer. One end of the support rib is fixed in one side wall of the buffer groove, and the other end is horizontally cantilevered in the buffer layer and spaced apart from the other side wall of the buffer groove.

6. The anti-cracking structure of epoxy flooring around a concrete column according to claim 5, characterized in that: Threaded sleeves are provided inside both sides of the buffer groove, and one end of the support rib is threaded into the threaded sleeve.

7. A crack-resistant epoxy flooring structure around a concrete column according to any one of claims 1-6, characterized in that: The buffer groove is circular or polygonal, surrounding the column.

8. A crack-resistant epoxy flooring structure around a concrete column according to any one of claims 1-6, characterized in that: An interface layer is laid between the substrate and the leveling layer.

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