Prefabricated floor hole plugging structure

Abstract

The utility model relates to the technical field of building construction, and disclose a kind of assembled floor hole plugging structure, comprising: structural floor and the hole of being penetrated structural floor;Prefabricated concrete hole-stopping component, prefabricated concrete hole-stopping component is ladder cylindrical structure, and is integrally formed by large cylinder located at top and small cylinder located at bottom;High-strength cement slurry filling layer is filled in annular gap between prefabricated concrete hole-stopping component and hole inner wall;The upper end of hole is provided with chiseled and expanded mouth area, large cylinder is embedded and covered on chiseled and expanded mouth area, and the size of both is mutually matched.The utility model, using prefabricated concrete hole-stopping component, realizes field assembly installation, completely saves the maintenance time of field formwork, pouring and waiting concrete strength development in traditional process, to greatly shorten construction cycle, meet the demand of rapid construction.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a prefabricated floor slab hole sealing structure. Background Technology

[0002] During the construction process, floor slabs often have holes due to pipelines passing through or construction reservations. Sealing these holes is a key process for later decoration and structural safety. Traditional sealing methods often involve on-site formwork and pouring concrete or mortar. Some processes also combine expansion agents or special leak-sealing materials to achieve structural restoration and waterproofing requirements.

[0003] When implementing the above-mentioned solution, the applicant found that on-site pouring requires waiting for the concrete to develop its strength, which takes a long time. At the same time, shrinkage cracks are prone to appear at the interface between the old and new concrete, affecting the overall structure and waterproofing effect. In addition, traditional processes have poor adaptability to hole size and are difficult to achieve rapid and standardized construction. Especially in the context of the promotion of prefabricated buildings, existing technologies are no longer able to meet the requirements of high-quality and prefabricated construction. Based on this, this utility model designs a prefabricated floor slab hole sealing structure to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated floor slab hole sealing structure, which solves the problems of long construction period and poor adaptability in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A prefabricated floor slab hole sealing structure includes: a structural floor slab and holes penetrating the structural floor slab; a precast concrete hole-sealing component, the precast concrete hole-sealing component being a stepped cylindrical structure, integrally composed of a large cylinder at the top and a small cylinder at the bottom; a high-strength cement slurry filling layer, filling the annular gap between the precast concrete hole-sealing component and the inner wall of the hole; the upper end of the hole has a roughened and flared area, the large cylinder is embedded in and covers the roughened and flared area, and the two are sized to match each other.

[0006] Preferably, the total height of the precast concrete plugging component is the same as the thickness of the structural floor slab, and the concrete grade of the precast concrete plugging component is the same as the concrete grade of the structural floor slab.

[0007] Preferably, the high-strength cement slurry filling layer is made by mixing cement slurry with 5%-10% glue.

[0008] The above technical solution involves first prefabricating concrete plugging components based on the thickness of the structural floor slab and the size of the holes. The total height of these components is the same as the thickness of the structural floor slab, and the concrete grade is also the same. The prefabricated concrete plugging components are stepped cylindrical structures. A handheld hole-reaming and chiseling machine is used to create a 2cm deep flared area at the upper end of the hole to increase surface roughness and improve adhesion. The prefabricated concrete plugging components are then embedded into the hole, ensuring the large cylinder completely covers and fits the flared area, guaranteeing a tight fit. Subsequently, a high-strength cement grout layer is filled into the annular gap between the prefabricated concrete plugging components and the inner wall of the hole. This cement grout is made by mixing cement with 5%-10% glue to enhance adhesion and density. After the high-strength cement grout layer has cured, the holes can be quickly and reliably sealed, effectively ensuring the structural integrity, waterproofing, and load-bearing safety, avoiding the long construction period and shrinkage cracking problems associated with traditional on-site casting.

[0009] Preferably, the flaring and reaming area is formed by a handheld flaring and reaming machine, and its depth is 2cm.

[0010] Preferably, the diameter of the large cylinder is three times the diameter of the small cylinder.

[0011] As shown in the above technical solution, after the precast concrete plugging component reaches 100% strength, high-strength cement grout is prepared on-site, with 5%-10% glue added to enhance adhesion. The precast concrete plugging component is then placed into the hole, ensuring the large cylindrical portion of the component is embedded in the roughened and flared area, guaranteeing a tight seal. Next, high-strength cement grout is used to fill the gap between the precast concrete plugging component and the inner wall of the hole in the structural floor slab, ensuring a dense and void-free filling. This method, through standardized precasting and efficient construction, significantly improves efficiency and quality, achieving rapid sealing of floor slab holes while ensuring the structural safety and durability under load.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are: 1. This utility model uses precast concrete plugging components, which realizes on-site assembly and installation, completely eliminating the on-site formwork, pouring and curing time for the concrete to develop strength in the traditional process, thereby greatly shortening the construction cycle and meeting the needs of rapid construction.

[0013] 2. This utility model enhances the bonding strength and density of the new and old bonding surfaces by setting a roughened and flared area and combining it with a high-strength cement slurry filling layer. The stepped hole-blocking component forms a mechanical interlock, which works together with the cement slurry filling layer to effectively prevent the generation of shrinkage cracks at the bonding surface, ensuring the structural integrity and reliable waterproof performance after sealing. The prefabricated components can be standardized and mass-produced according to the floor slab thickness and common hole sizes, and have good adaptability to different holes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A; Figure 3 This is a structural schematic diagram of the precast concrete plugging component of this utility model; Figure 4 This is a bottom view of the precast concrete plugging component of this utility model.

[0015] Among them: 1. Precast concrete plugging components; 2. Structural floor slabs; 3. High-strength cement grout filling layer; 4. Roughened and flared area; 101. Large cylinder; 102. Small cylinder. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please refer to Figures 1-3 A prefabricated floor slab hole sealing structure includes: a structural floor slab 2 and a hole penetrating the structural floor slab 2; a precast concrete hole-sealing component 1, which is a stepped cylindrical structure consisting of a large cylinder 101 at the top and a small cylinder 102 at the bottom; a high-strength cement slurry filling layer 3, which fills the annular gap between the precast concrete hole-sealing component 1 and the inner wall of the hole; and a roughened and flared area 4 is provided at the upper end of the hole, on which the large cylinder 101 is embedded and covers the roughened and flared area 4, and the two are sized to match each other.

[0018] The total height of the precast concrete plugging component 1 is the same as the thickness of the structural floor slab 2, and the concrete grade of the precast concrete plugging component 1 is the same as the concrete grade of the structural floor slab 2.

[0019] In this embodiment of the invention, firstly, based on the thickness of the structural floor slab 2 and the size of the hole, a precast concrete hole-plugging component is constructed. Its total height is the same as the thickness of the structural floor slab 2, and its concrete grade is also the same. The precast concrete hole-plugging component 1 is a stepped cylindrical structure, integrally formed by a large cylinder 101 at the top and a small cylinder 102 at the bottom. The diameter of the large cylinder 101 is designed to be three times the diameter of the small cylinder 102 to enhance load-bearing and covering effects. Then, a handheld hole-expanding and roughening machine is used to process a roughened and flared area 4 with a depth of 2cm at the upper end of the hole to increase surface roughness and improve adhesion. The precast concrete hole-plugging component 1 is then embedded into the hole, ensuring that the large cylinder 101 completely covers and embeds into the roughened and flared area 4, guaranteeing a tight dimensional fit. Subsequently, a high-strength cement grout filling layer 3 is filled into the annular gap between the precast concrete plugging component 1 and the inner wall of the hole. This cement grout is made by mixing cement with 5%-10% glue to enhance adhesion and density. After the high-strength cement grout filling layer 3 has cured, the hole can be quickly and reliably sealed, effectively ensuring the structural integrity, waterproofing, and load-bearing safety, and avoiding the long construction period and shrinkage cracking problems of traditional on-site casting.

[0020] Please refer to Figures 1-4 The high-strength cement slurry filling layer 3 is made by mixing cement slurry with 5%-10% glue. The roughened and flared area 4 is formed by a hand-held reaming and roughening machine, and its depth is 2cm.

[0021] The diameter of the large cylinder 101 is three times the diameter of the small cylinder 102.

[0022] In this embodiment of the invention, a handheld hole-expanding and roughening machine is used to roughen the upper opening of temporary holes on the structural floor slab 2 by 2cm, forming a roughened and flared area 4 to increase the adhesion between the new and old materials. Based on the actual engineering conditions, including the thickness of the structural floor slab 2, the number and diameter of the holes to be sealed, a batch of prefabricated concrete hole-sealing components 1 are prepared in advance. The concrete grade is the same as that of the structural floor slab 2, and the dimensions are customized according to the component detail drawings. After the prefabricated concrete hole-sealing components 1 reach 100% strength, high-strength cement slurry is prepared on-site, with 5%-10% glue added to enhance adhesion. The prefabricated concrete hole-sealing components 1 are placed into the holes, ensuring that the large cylindrical part 101 of the component is embedded in the roughened and flared area 4, guaranteeing a tight seal. Then, high-strength cement slurry is used to fill the gap between the prefabricated concrete hole-sealing components 1 and the inner wall of the holes in the structural floor slab 2, ensuring a dense and void-free filling.

[0023] In use, a handheld reaming and roughening machine is used to create a 2cm deep flared area 4 at the upper end of the hole in the structural floor slab 2 to enhance the adhesion of the bonding surface. Then, a precast concrete plugging component 1, of the same thickness and grade as the floor slab, is embedded into the hole, with its large cylinder 101 covering and embedding into the flared area 4, while its small cylinder 102 is placed inside the hole. Finally, a high-strength cement grout filling layer 3 is filled into the annular gap between the precast concrete plugging component 1 and the inner wall of the hole to ensure the tightness of the seal. This prefabricated process achieves rapid and reliable hole sealing, effectively ensuring the integrity of the structure, load-bearing safety, and avoiding the long construction period and shrinkage cracking problems associated with traditional on-site casting.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated floor slab hole sealing structure, characterized in that, include: Structural floor slab (2) and holes penetrating structural floor slab (2); The precast concrete plugging component (1) is a stepped cylindrical structure, which is composed of a large cylinder (101) at the top and a small cylinder (102) at the bottom. A high-strength cement slurry filling layer (3) is filled in the annular gap between the precast concrete plugging component (1) and the inner wall of the hole; The upper end of the hole is provided with a chiseling and flaring area (4), and the large cylinder (101) is embedded in and covers the chiseling and flaring area (4), and the two are matched in size.

2. The prefabricated floor slab hole sealing structure according to claim 1, characterized in that: The total height of the precast concrete plugging component (1) is the same as the thickness of the structural floor slab (2), and the concrete grade of the precast concrete plugging component (1) is the same as the concrete grade of the structural floor slab (2).

3. The prefabricated floor slab hole sealing structure according to claim 1, characterized in that: The high-strength cement slurry filling layer (3) is made by mixing cement slurry with 5%-10% glue.

4. The prefabricated floor slab hole sealing structure according to claim 1, characterized in that: The flaring and burring area (4) is formed by a hand-held flaring and burring machine, and its depth is 2cm.

5. The prefabricated floor slab hole sealing structure according to claim 1, characterized in that: The diameter of the large cylinder (101) is three times the diameter of the small cylinder (102).

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