A deformable sealing baffle device for multi-column type precast column base pile construction

Abstract

The utility model relates to the technical field of multi -column type prefabricated column seat slurry construction, specifically disclose a kind of deformable sealing baffle device for multi -column type prefabricated column seat slurry construction, including column bottom keyway, the outer ring of column bottom keyway is provided with slurry baffle, and the outer ring of slurry baffle is provided with several angle steels, the top four corners of column bottom keyway are all provided with gasket, the top of column bottom keyway is provided with several sleeves, the lower part of the outside wall of the side of sleeve is provided with grouting hole, the upper part of the outside wall of the side of sleeve is provided with grouting outlet, the top of column bottom keyway is provided with PVC breather pipe;The utility model is light and firm in structure, can be repeatedly used, reduces material waste and construction cost, effectively solves the problem that traditional method is poorly sealed, rework rate is high, construction period is long, improves the efficiency and quality stability of seat slurry construction.

Description

Technical Field

[0001] This utility model belongs to the field of grouting construction technology for multi-column precast column bases, specifically relating to a deformable sealing baffle device for grouting construction of multi-column precast column bases. Background Technology

[0002] Grouting construction refers to the process in prefabricated buildings where a layer of high-strength cement-based grout is laid on the bottom of prefabricated components, such as prefabricated columns, in the area where they contact the foundation or lower structure before installation. Its main purpose is to fill the gap between the bottom surface of the component and the supporting surface, ensuring uniform stress distribution between the prefabricated column and the foundation, improving the integrity and stability of the structure, and preventing cracking or settlement caused by local stress concentration. The grout layer can also adjust the installation elevation, compensate for minor unevenness of the supporting surface, and ensure the verticality and flatness of the component installation. After the prefabricated column is installed, the grout is densely filled under pressure, and together with the grouting sleeve connection technology, it ensures the connection strength and seismic performance of the vertical components.

[0003] Existing grouting construction methods often employ temporary wooden boards or metal baffles to enclose the grout cavity. However, this approach suffers from significant problems in practice, including inadequate sealing, inconvenient installation, and poor adaptability. Traditional baffles are difficult to adjust flexibly according to the cross-sectional dimensions of the precast column and on-site installation deviations, resulting in loose adhesion between the baffle and the column surface, leaving noticeable gaps. This easily leads to grout leakage under pressure, wasting materials, affecting grout density and stress uniformity, and weakening the connection strength of the grouting sleeve. Furthermore, in confined spaces such as edge or corner columns, baffles require on-site cutting, multi-directional splicing, and reinforcement, making installation and dismantling cumbersome and time-consuming, resulting in low construction efficiency and difficulty in ensuring consistent sealing in all directions. More seriously, problems such as incomplete grout filling and hollow areas due to sealing failure occur frequently, leading to unstable construction quality, high rework rates, severely impacting project progress, and potentially posing risks to the overall structural load-bearing capacity.

[0004] To address these issues, the applicant proposes a deformable sealing baffle device for grouting construction of multi-column precast column bases. Utility Model Content

[0005] The purpose of this utility model is to provide a deformable sealing baffle device for grouting construction of multi-column precast columns, in order to solve the problems in the prior art where existing grouting construction often uses temporary baffle formwork, which is difficult to adapt to different column sizes and installation deviations, resulting in poor fit between the baffle and the column, easy grout leakage, affecting the density and stress uniformity of the grout, and in complex locations such as corner columns, the installation is cumbersome, the sealing is poor, and hollow areas and rework often occur, resulting in low construction efficiency, difficulty in quality control, and threats to structural safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A deformable sealing baffle device for grouting construction of multi-column precast column bases includes a column bottom keyway, a grout baffle plate is provided around the outer ring of the column bottom keyway, and a plurality of angle steels are provided around the outer ring of the grout baffle plate. Gaskets are provided at the four corners of the top of the column bottom keyway. A plurality of sleeves are provided at the top of the column bottom keyway. A grouting hole is provided on the lower part of one side outer wall of the sleeve, and a grout outlet hole is provided on the upper part of one side outer wall of the sleeve. A PVC vent pipe is provided at the top of the column bottom keyway. A rubber sealing sheet is provided on one side of the angle steels, and a plurality of vent holes are provided on one side of the angle steels.

[0008] Preferably, the inner cavity of the grouting hole is connected to the inner cavity of the corresponding sleeve, and the inner cavity of the grout outlet hole is connected to the inner cavity of the corresponding sleeve.

[0009] Preferably, one side of the angle steel is provided with a plurality of fastening bolts, one end of which passes through the side wall of the adjacent angle steel and the side wall of the rubber sealing sheet in sequence and is fixedly connected to one side of the corresponding precast column.

[0010] Preferably, the top of the gasket fits into the bottom of the keyway at the bottom of the column.

[0011] Preferably, the left view of the angle steel is L-shaped, and the left view of the rubber sealing sheet is L-shaped.

[0012] Preferably, the outer wall of the rubber sealing sheet is respectively attached to the outer wall of the adjacent angle steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This solution addresses the poor sealing performance of traditional grouting baffles by installing rubber sealing sheets inside the angle steel. These sheets utilize their elastic deformation to tightly adhere to the surface of the precast column, effectively sealing installation gaps, preventing grout leakage during injection, ensuring a dense and uniform grout layer, reducing defects such as voids and incomplete filling, and improving the connection quality of the grouting sleeve. To address the issues of cumbersome and inefficient installation, a modular structure combining angle steel and rubber sealing sheets is adopted, along with fastening bolts for quick assembly and disassembly, eliminating the need for on-site cutting or welding, reducing operational difficulty and construction time, and making it particularly suitable for space-constrained areas such as edge columns and corner columns. To address the issue of insufficient adaptability, the L-shaped angle steel and rubber sealing sheets can be flexibly spliced ​​along the perimeter of the column, adapting to precast columns of different cross-sectional dimensions and installation postures, offering strong versatility and reducing the need for replacing specialized tools. The device is lightweight and structurally robust, reusable, reducing material waste and construction costs, effectively solving the problems of poor sealing, high rework rates, and long construction periods associated with traditional methods, and improving the efficiency and quality stability of grouting construction. Attached Figure Description

[0015] Figure 1This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 This is a top view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the angle steel structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rubber sealing sheet structure of this utility model.

[0019] In the diagram: 1. Grouting hole; 2. Gasket; 3. Grout outlet hole; 4. Sleeve; 5. PVC vent pipe; 6. Keyway at column base; 7. Rubber sealing sheet; 8. Vent hole; 9. Angle steel; 10. Fastening bolt. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1:

[0024] Please see Figure 1 - Figure 4As shown, a deformable sealing baffle device for grouting construction of multi-column precast column bases includes a column bottom keyway 6, a grout baffle plate is provided on the outer ring of the column bottom keyway 6, and a number of angle steels 9 are provided on the outer ring of the grout baffle plate. Gaskets 2 are provided at the four corners of the top of the column bottom keyway 6. A number of sleeves 4 are provided on the top of the column bottom keyway 6. A grouting hole 1 is opened on the lower part of the outer wall of one side of the sleeve 4, and a grout outlet hole 3 is opened on the upper part of the outer wall of one side of the sleeve 4. A PVC vent pipe 5 is provided on the top of the column bottom keyway 6. A rubber sealing sheet 7 is provided on one side of the angle steel 9, and a number of vent holes 8 are opened on one side of the angle steel 9.

[0025] The inner cavity of the grouting hole 1 is connected to the inner cavity of the corresponding sleeve 4, and the inner cavity of the grout outlet hole 3 is connected to the inner cavity of the corresponding sleeve 4.

[0026] As can be seen from the above, when performing grouting construction on multi-column precast column bases, firstly, the gaskets 2 are placed at the four corners of the top of the column bottom keyway 6 at the bottom of the precast column to adjust the installation elevation and compensate for minor unevenness of the support surface, ensuring uniform stress on the column. Then, multiple sleeves 4 are positioned and installed at the bottom of the column according to the design requirements. The grouting holes 1 and grout outlet holes 3 on the lower part of their side walls are connected to the inner cavity of the sleeves 4, forming a grout injection and venting channel. At the same time, PVC vent pipes 5 are arranged at appropriate positions at the bottom of the column to help expel air from the sealed space and prevent air resistance from causing incomplete filling. A baffle plate structure composed of several sections of angle steel 9 is set around the outer ring of the precast column. The angle steel 9 has an L-shaped structure on the left and fits the outer edge of the column. A rubber sealing sheet 7 with the same L-shaped structure is tightly attached to its inner side. The outer wall of the rubber sealing sheet 7 fits the inner wall of the angle steel 9 to form a stable overall sealing unit. Several vent holes are also opened on one side of the angle steel 9. 8. This ensures smooth gas discharge during grouting, preventing gas pressure buildup from affecting grout flow. Then, the fastening bolts 10 are screwed into the pre-set connection holes on the side of the precast column after passing through the side wall of the angle steel 9 and the rubber sealing sheet 7, achieving a secure fixation of the baffle device. This connection method allows for flexible adjustment of the bolt positions and angle steel 9 splicing methods according to the actual layout of different column types, such as side columns, corner columns, or through-floor columns, without requiring on-site cutting or welding, adapting to various complex working conditions. After installation, high-strength grout is injected from the grouting hole 1 into the sleeve 4 and the keyway 6 area at the bottom of the column. Under pressure, the grout gradually fills the entire bottom void, while air is orderly discharged through the grout outlet hole 3, the PVC vent pipe 5, and the vent holes 8 on the angle steel 9. When grout flows continuously and stably from the grout outlet hole 3, it indicates full filling; grouting is then stopped, and the column is allowed to cure. After construction, the fastening bolts 10 are loosened, the angle steel 9 and rubber sealing sheet 7 are removed, cleaned, and reused at the next construction point, achieving cyclical use.

[0027] This solution addresses the problems of traditional baffles failing to adhere properly to the column and exhibiting poor sealing in existing technologies. By installing a rubber sealing sheet 7 inside the angle steel 9, the elastic deformation capacity of the rubber material allows it to tightly adhere to the surface of the precast column, effectively filling gaps caused by processing errors or installation deviations. This improves the sealing performance of the grout-blocking structure, preventing leakage of the grout material under grouting pressure. This ensures the uniformity and density of the grout distribution, reduces quality defects such as voids and incomplete filling, and improves the connection reliability of the grouting sleeve 4. To address the issues of inconvenient installation and low efficiency, a modular design combining the angle steel 9 and the rubber sealing sheet 7 is adopted, along with the quick connection of the fastening bolts 10. The mechanism eliminates the need for on-site cutting, welding, or multi-layer reinforcement of the baffle device, making installation and disassembly simple and quick. It is particularly suitable for space-constrained areas such as edge columns and corner columns, significantly reducing operational complexity and labor time. To address the issue of poor adaptability, the L-shaped angle steel 9 and rubber sealing sheet 7 can be flexibly spliced ​​and combined along the circumference of the column to adapt to precast columns with different cross-sectional dimensions and installation postures, achieving universal coverage for multi-column construction scenarios and reducing the frequency of changing special tools. At the same time, the overall structure of the device is lightweight yet high-strength, easy to transport and reuse, reducing material consumption and construction costs, and effectively solving the problems of high rework rates and long construction cycles caused by sealing failure in traditional methods.

[0028] Example 2:

[0029] Please see Figure 1 - Figure 4 As shown, a number of fastening bolts 10 are provided on one side of the angle steel 9. One end of the fastening bolt 10 passes through the side wall of the adjacent angle steel 9 and the side wall of the rubber sealing sheet 7 in sequence and is fixedly connected to one side of the corresponding precast column.

[0030] The top of the gasket 2 fits into the bottom of the keyway 6.

[0031] The left view of angle steel 9 is L-shaped, and the left view of rubber sealing sheet 7 is L-shaped.

[0032] The outer wall of the rubber sealing sheet 7 is respectively attached to the outer wall of the adjacent angle steel 9.

[0033] As can be seen from the above, the connection between the inner cavity of the grouting hole 1 and the inner cavity of the corresponding sleeve 4, and the connection between the inner cavity of the grout outlet hole 3 and the inner cavity of the corresponding sleeve 4, allows the grout to be smoothly injected into the sleeve 4 through the grouting hole 1 during grouting construction, and pushes the air in the cavity to be discharged from the grout outlet hole 3. This achieves the orderly inflow of grout and the effective discharge of gas, ensuring the grouting density, avoiding air bubble retention and incomplete filling. Several fastening bolts 10 are set on one side of the angle steel 9, and one end of the fastening bolts 10 passes through the side wall of the adjacent angle steel 9 and the side wall of the rubber sealing sheet 7 and is fixedly connected to one side of the precast column. During installation, the angle steel 9 and the rubber sealing sheet 7 can be firmly fixed to the side of the precast column by the bolts, ensuring that the grout-blocking structure does not shift or loosen under grouting pressure, thus improving the stability of the device, ensuring the continuity of sealing and construction safety. The top of the gasket 2 fits into the bottom of the column bottom keyway 6. During the installation of precast columns, the gasket 2 can evenly support the column, adjust the installation elevation, and compensate for minor unevenness of the foundation surface, making the force distribution at the bottom of the column more uniform. This achieves the effect of improving installation accuracy and preventing local stress concentration that could lead to cracking or deformation of the grout layer. The L-shaped structure of both the angle steel 9 and the rubber sealing sheet 7 in their left views allows them to fit the right-angle contour of the outer edge of the precast column, forming a continuous and closed grout barrier boundary around the column. This is especially suitable for the enclosure requirements of right-angle columns and corner columns, achieving the effects of enhancing structural adaptability, achieving multi-directional sealing, and preventing grout overflow. The outer wall of the rubber sealing sheet 7 is attached to the outer wall of the adjacent angle steel 9, ensuring that the rubber sealing sheet 7 is firmly embedded inside the angle steel 9, preventing displacement or detachment during handling or installation. At the same time, it maintains direct contact between the sealing surface and the column surface, achieving the effects of ensuring the integrity of the sealing structure, improving installation reliability, and ensuring sealing consistency.

[0034] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deformable sealing baffle device for grouting construction of multi-column precast column bases, comprising a column bottom keyway (6), characterized in that: The column bottom keyway (6) is provided with a baffle plate on its outer ring, and a number of angle steels (9) are provided on the outer ring of the baffle plate. Gaskets (2) are provided at the four corners of the top of the column bottom keyway (6). A number of sleeves (4) are provided on the top of the column bottom keyway (6). A grouting hole (1) is provided on the lower part of the outer wall of one side of the sleeve (4). A grout outlet hole (3) is provided on the upper part of the outer wall of one side of the sleeve (4). A PVC vent pipe (5) is provided on the top of the column bottom keyway (6). A rubber sealing sheet (7) is provided on one side of the angle steel (9). A number of vent holes (8) are provided on one side of the angle steel (9).

2. The deformable sealing baffle device for grouting construction of multi-column precast column bases according to claim 1, characterized in that: The inner cavity of the grouting hole (1) is connected to the inner cavity of the corresponding sleeve (4), and the inner cavity of the grout outlet hole (3) is connected to the inner cavity of the corresponding sleeve (4).

3. The deformable sealing baffle device for grouting construction of multi-column precast column bases according to claim 1, characterized in that: A number of fastening bolts (10) are provided on one side of the angle steel (9). One end of the fastening bolt (10) passes through the side wall of the adjacent angle steel (9) and the side wall of the rubber sealing sheet (7) and is fixedly connected to one side of the corresponding precast column.

4. The deformable sealing baffle device for grouting construction of multi-column precast column bases according to claim 1, characterized in that: The top of the gasket (2) is in contact with the bottom of the keyway (6).

5. A deformable sealing baffle device for grouting construction of multi-column precast column bases according to claim 1, characterized in that: The left view of the angle steel (9) is L-shaped, and the left view of the rubber sealing sheet (7) is L-shaped.

6. A deformable sealing baffle device for grouting construction of multi-column precast column bases according to claim 1, characterized in that: The outer wall of the rubber sealing sheet (7) is respectively attached to the outer wall of the adjacent angle steel (9).

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