Mounting and fixing piece for buttress type retaining wall concrete formwork
By installing PVC sleeves and sealing devices on the tie bolts, the problem of corrosion of tie bolts in humid environments is solved, achieving waterproofing and corrosion prevention of the tie bolts, ensuring construction safety and the quality of concrete structures.
Patent Information
- Application Number
- CN202520189407.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-05
AI Technical Summary
In humid environments, the tie bolts of the fixing components for the concrete formwork of buttress retaining walls are prone to corrosion, which can reduce the strength of the bolts and potentially lead to safety accidents.
The system employs PVC tubing and sealing devices, including hollow threaded rods, waterstops, adhesive guide pipes, drainage pipes, and outlet pipes, to form a sealed barrier that prevents concrete grout leakage and corrosion.
It effectively prevents corrosion of tie bolts, improves tensile strength, ensures construction safety, and enhances the waterproof performance and quality of concrete structures.
Smart Images
Figure CN223767169U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of installation and fixing components, specifically to an installation and fixing component for buttress-type retaining wall concrete formwork. Background Technology
[0002] The fixing components for the concrete formwork of the buttress retaining wall are tie bolts. Tie bolts are used in formwork engineering, and their main function is to fix the formwork, prevent the formwork from deforming or shifting during the concrete pouring process, and ensure the forming quality of the concrete structure.
[0003] During the concrete pouring process, the concrete will exert a large lateral pressure on the formwork. The tie bolts tighten the two sides of the formwork to form a stable force system, which effectively resists the lateral pressure of the concrete and prevents the formwork from deforming or displacing laterally.
[0004] The seawall safety project is located on the southeast coast, where the construction environment is humid. During the formwork installation process, there may be tiny gaps between the tie bolts and the formwork. When the concrete is poured, some cement slurry may seep into these gaps, but it is difficult to completely fill them. These gaps are prone to water accumulation in the humid environment, forming a localized damp environment. In addition, the water may contain alkaline substances and other impurities from the concrete, which provide favorable conditions for corrosion. This makes the tie bolts more susceptible to corrosion in these areas. Corrosion weakens the strength of the bolts and reduces their tensile strength. Severe corrosion may cause the bolts to suddenly break during use, leading to safety accidents.
[0005] Therefore, a buttress-type retaining wall concrete formwork installation and fixing component is proposed to address the above problems. Utility Model Content
[0006] The purpose of this utility model is to provide a buttress-type retaining wall concrete formwork installation and fixing component to solve the problem that severe corrosion may cause bolts to suddenly break during use, leading to safety accidents.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A buttress-type retaining wall concrete formwork installation and fixing component includes tie bolts, nuts with washers, and PVC sleeves. The tie bolts are helically connected to the outer side with nuts, and the PVC sleeves are installed on the outer side of the tie bolts. Sealing devices are installed at both ends of the PVC sleeves, and formwork is installed on the outer side of the sealing devices. The sealing devices include hollow threaded rods, with water-stop plates fixedly connected to the outer side of the hollow threaded rods by welding. An installation rod is fixedly connected to one end of the hollow threaded rod, and the installation rod has internal threads on its inner side. An installation plate is fixedly connected to one end of the installation rod, and a fixing bolt is threaded into the inner side of the installation plate.
[0009] As a further optimization of this utility model, the waterstop includes a waterstop body, a sealing groove on one side of the waterstop body, an adhesive guiding channel on the inner side of the waterstop body, a drainage pipe inside the waterstop body, and an outlet pipe on the inner side of the waterstop body.
[0010] As a further optimization of this utility model, the template is installed on the outside of the mounting rod, the template is positioned between the mounting plate and the waterstop, the two sides of the template are in close contact with one side of the mounting plate and the waterstop, and the mounting plate and the waterstop have different diameters.
[0011] As a further optimization of this utility model, the hollow threaded rod is spirally connected to the PVC sleeve on the side near the adhesive guiding pipe, and spirally connected to the inner thread of the mounting rod on the side away from the adhesive guiding pipe. The center points of the hollow threaded rod, the mounting rod, and the PVC sleeve are located on the same vertical line, and the inner diameter of the PVC sleeve is 4mm larger than the bolt diameter.
[0012] As a further optimization of this utility model, the fixing bolts are provided in a plurality of units, and are arranged in a circular array on one side of the mounting plate with the center of one side of the mounting plate as the axis. One end of each fixing bolt passes through the mounting plate and is fixedly connected to the template.
[0013] As a further optimization of this utility model, the adhesive guiding pipe is L-shaped, the lower end of the adhesive guiding pipe is connected to the drainage pipe, the outlet pipe and the inner side of the sealing groove, the drainage pipe is ring-shaped, and the inner side of the sealing groove is tightly attached to both ends of the tie bolt.
[0014] As a further optimization of this utility model, the outlet tubes are arranged in a circular array between the drainage tube and the sealing groove with the bottom center of the sealing groove as the axis, and the cross-sectional shape of the outlet tubes is circular.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] In this invention, the sealing groove on the water-stop plate can be filled with sealing material, which makes close contact with the tie bolts to form an effective sealing barrier, preventing concrete grout leakage. The setting of the adhesive guide pipe, drainage pipe, and outlet pipe allows the sealing material to be evenly filled into the sealing groove, ensuring a seal without dead corners, greatly improving the reliability of waterproofing, effectively protecting the waterproofing quality of the concrete structure, avoiding the impact of leakage on the structural durability and functionality, preventing corrosion of the tie bolt installation area, improving its tensile strength, and ensuring construction safety. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the installation position of the sealing device of this utility model;
[0019] Figure 3 This is a schematic diagram of the disassembled structure of the sealing device of this utility model;
[0020] Figure 4 This is a schematic diagram of the overall structure of the waterstop plate of this utility model;
[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the main body of the waterstop plate of this utility model.
[0022] In the diagram: 1. Template; 2. Tie bolt; 3. Nut; 4. PVC sleeve;
[0023] 5. Sealing device; 51. Hollow threaded rod; 52. Waterstop plate; 521. Waterstop plate body; 522. Sealing groove; 523. Adhesive guide pipe; 524. Drainage pipe; 525. Outlet pipe; 53. Mounting rod; 54. Internal thread; 55. Mounting plate; 56. Fixing bolt. Detailed Implementation
[0024] 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.
[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] Please see Figure 1-5 This utility model provides a technical solution:
[0027] A buttress-type retaining wall concrete formwork installation and fixing component includes tie bolts 2, nuts 3 with washers, and PVC sleeves 4. Nuts 3 are spirally connected to the outside of tie bolts 2, and PVC sleeves 4 are installed on the outside of tie bolts 2. Sealing devices 5 are installed at both ends of PVC sleeves 4, and formwork 1 is installed on the outside of sealing devices 5. Sealing device 5 includes a hollow threaded rod 51, a waterstop plate 52 is fixedly connected to the outside of hollow threaded rod 51 by welding, an installation rod 53 is fixedly connected to one end of hollow threaded rod 51, an internal thread 54 is opened on the inner side of the installation rod 53, an installation plate 55 is fixedly connected to one end of the installation rod 53, and a fixing bolt 56 is threadedly connected to the inside of the installation plate 55.
[0028] As a further implementation of the above technical solution: the adhesive guiding pipe 523 is L-shaped, and the lower end of the adhesive guiding pipe 523 is connected to the drainage pipe 524, the outlet pipe 525 and the inner side of the sealing groove 522. The drainage pipe 524 is ring-shaped, and the inner side of the sealing groove 522 is tightly attached to both ends of the tie bolt 2. This can accurately guide the sealing material from the external injection point to the key parts of the waterstop plate body 521, ensuring that the sealing material flows along the preset path, avoiding disorderly diffusion and waste of the sealing material during the injection process, and improving the efficiency of the sealing material and the accuracy of the sealing operation.
[0029] As a further implementation of the above technical solution: the outlet tubes 525 are arranged in a circular array between the drainage tubes 524 and the sealing grooves 522 with the bottom center of the sealing grooves 522 as the axis. The cross-sectional shape of the outlet tubes 525 is circular. The arrangement of the outlet tubes 525 allows the sealing material to be evenly filled into the sealing grooves 522, ensuring a uniform and reliable sealing effect and avoiding poor local sealing.
[0030] As a further implementation of the above technical solution: the side of the hollow threaded rod 51 closest to the adhesive guiding pipe 523 is spirally connected to the PVC sleeve 4, and the side of the hollow threaded rod 51 furthest from the adhesive guiding pipe 523 is spirally connected to the internal thread 54 on the inner side of the mounting rod 53. The center points of the hollow threaded rod 51, the mounting rod 53, and the PVC sleeve 4 are located on the same vertical line. The inner diameter of the PVC sleeve 4 is 4mm larger than the bolt diameter, which effectively prevents water and grout from leaking from the installation part of the tie bolt 2 during the concrete pouring process, ensuring the waterproof performance of the concrete structure and improving the quality of the project.
[0031] As a further implementation of the above technical solution: the waterstop 52 includes a waterstop body 521, a sealing groove 522 is provided on one side of the waterstop body 521, a glue guiding pipe 523 is provided on the inner side of the waterstop body 521, a drainage pipe 524 is provided inside the waterstop body 521, and an outlet pipe 525 is provided on the inner side of the waterstop body 521. The sealing groove 522 on one side of the waterstop 52 can be filled with sealing material and make close contact with the tie bolt 2 to form an effective sealing line to prevent leakage. The waterstop 52 is fixed to the outside of the hollow threaded rod 51 by welding, and the connection is firm to ensure that it will not shift under stress and maintain the stability of the sealing device 5.
[0032] As a further implementation of the above technical solution: a number of fixing bolts 56 are provided. The fixing bolts 56 are distributed in a circular array on one side of the mounting plate 55 with the center of one side of the mounting plate 55 as the axis. One end of the fixing bolt 56 passes through the mounting plate 55 and is fixedly connected to the template 1. The setting of fixing bolts 56 facilitates installation and disassembly. After the construction is completed, the template 1 and the sealing device 5 can be easily removed for the next round of construction or maintenance.
[0033] As a further implementation of the above technical solution: the template 1 is installed on the outside of the mounting rod 53. The template 1 is set between the mounting plate 55 and the waterstop 52. The two sides of the template 1 are in close contact with one side of the mounting plate 55 and the waterstop 52. The mounting plate 55 and the waterstop 52 have different diameters. The mounting plate 55 is fixedly connected to the template 1 by fixing bolts 56, so that the template 1 is tightly combined with the sealing device 5, which enhances the integrity and stability of the template 1 and ensures that the template 1 is accurately positioned during construction and will not be deformed or displaced due to external forces.
[0034] Workflow: Pass the PVC sleeve 4 through the pre-drilled hole in the template 1, ensuring that the two ends of the PVC sleeve 4 extend equally from the template 1 to allow the tie bolt 2 to pass smoothly. Take a sealing device 5 and screw the side of the hollow threaded rod 51 near the adhesive guide pipe 523 to one end of the PVC sleeve 4, ensuring a secure connection. Install the template 1 outside the mounting rod 53, positioning it between the mounting plate 55 and the waterstop 52, with both sides of the template 1 tightly against one side of the mounting plate 55 and the waterstop 52. Note that the mounting plate 55 and the waterstop 52 have different diameters; ensure accurate positioning during installation. Use fixing bolts 56. The mounting plate 55 is fixedly connected to one side of the template 1. One end of the fixing bolt 56 is passed through the mounting plate 55 and tightened to make the template 1 and the sealing device 5 firmly connected. The tie bolt 2 is passed through the PVC sleeve 4 from one side of the template 1 until both ends of the tie bolt 2 protrude from both sides of the template 1. The outer side of the tie bolt 2 is in close contact with the inner side of the sealing groove 522 on the waterstop plate 52. Nuts 3 with washers are screwed to the outer sides of the two ends of the tie bolt 2 protruding from the template 1. By tightening the nuts 3, the template 1 is subjected to an inward pulling force, thereby fixing the template 1 firmly and ensuring that the template 1 can withstand the lateral pressure without deformation during the concrete pouring process.
[0035] After the tie bolts 2 are installed, the sealing device 5 is ready to operate. Sealing material is injected through the inlet of the adhesive guiding pipe 523. The injected sealing material flows along the adhesive guiding pipe 523 into the drain pipe 524, where it is evenly distributed. It then enters the sealing groove 522 through the outlet pipe 525, ensuring the sealing material is evenly filled and in close contact with the tie bolts 2, forming a preliminary seal. During concrete pouring, the concrete slurry exerts lateral pressure on the formwork 1. At this time, the waterstop 52 in the sealing device 5 plays a crucial sealing role. The sealing material filled in the sealing groove 522 on the waterstop 52 effectively prevents concrete slurry from leaking through the gap between the tie bolt 2 and the formwork 1. At the same time, the waterstop 52 is fixedly connected to the outside of the hollow threaded rod 51 by welding. The hollow threaded rod 51 is also tightly connected to the PVC sleeve 4 and the installation rod 53, forming an integral sealing structure, which further enhances the sealing effect and ensures that during the concrete pouring process, moisture and concrete slurry on the outside of the formwork 1 will not leak through the installation part of the tie bolt 2, thereby ensuring the quality and waterproof performance of the concrete structure.
[0036] 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 retaining wall concrete formwork mounting fixture comprising a tie bolt (2), a washered nut (3) and a PVC sleeve (4), characterised in that: The pair of pull bolts (2) is spirally connected with a nut (3) outside, and is provided with a PVC sleeve (4) outside, and the PVC sleeve (4) is provided with a sealing device (5) at both ends, and the sealing device (5) is provided with a formwork (1) outside; The sealing device (5) comprises a hollow threaded rod (51), the hollow threaded rod (51) is fixedly connected with a water stop piece (52) outside by welding, one end of the hollow threaded rod (51) is fixedly connected with a mounting rod (53), the inside of the mounting rod (53) is provided with an internal thread (54), one end of the mounting rod (53) is fixedly connected with a mounting plate (55), and the mounting plate (55) is internally threadedly connected with a fixing bolt (56).
2. A retaining wall concrete formwork mounting fixture according to claim 1, wherein: The water stop piece (52) comprises a water stop piece main body (521), a sealing groove (522) is formed on one side of the water stop piece main body (521), a glue guide pipeline (523) is formed in the inside of the water stop piece main body (521), a drainage pipe (524) is formed in the inside of the water stop piece main body (521), and a discharge pipe (525) is formed in the inside of the water stop piece main body (521).
3. A retaining wall concrete formwork mounting fixture according to claim 1, wherein: The formwork (1) is mounted outside the mounting rod (53), the formwork (1) is arranged between the mounting plate (55) and the water stop piece (52), the formwork (1) is tightly attached to one side of the mounting plate (55) and the water stop piece (52) on both sides, and the diameters of the mounting plate (55) and the water stop piece (52) are different.
4. A retaining wall concrete formwork mounting fixture according to claim 1, wherein: The hollow threaded rod (51) is spirally connected with the PVC sleeve (4) on the side close to the glue guide pipeline (523), the hollow threaded rod (51) is spirally connected with the internal thread (54) in the inside of the mounting rod (53) on the side away from the glue guide pipeline (523), the center points of the hollow threaded rod (51), the mounting rod (53) and the PVC sleeve (4) are located on the same vertical line, and the inner diameter of the PVC sleeve (4) is 4mm larger than the diameter of the bolt.
5. A retaining wall concrete formwork mounting fixture according to claim 1, wherein: The fixing bolt (56) is arranged in a circular array on one side of the mounting plate (55) with the center of one side of the mounting plate (55) as the axis, and one end of the fixing bolt (56) penetrates the mounting plate (55) and is fixedly connected with the formwork (1).
6. A retaining wall concrete formwork mounting fixture according to claim 2, wherein: The glue guide pipeline (523) is arranged in an L shape, the lower end of the glue guide pipeline (523) is communicated with the inside of the drainage pipe (524), the discharge pipe (525) and the sealing groove (522), the drainage pipe (524) is arranged in a ring shape, and the inside of the sealing groove (522) is tightly attached to both ends of the pair of pull bolts (2).
7. A retaining wall concrete formwork mounting fixture according to claim 2, wherein: The discharge pipe (525) is arranged in a circular array between the drainage pipe (524) and the sealing groove (522) with the center of the bottom of the sealing groove (522) as the axis, and the shape of the cross section of the discharge pipe (525) is circular.