Detachable slurry leakage prevention device for rectangular pier column
By using a detachable anti-leakage device in the construction of rectangular bridge piers, and utilizing elastic units to adapt to the gap between the formwork and the pier, the problem of grout leakage caused by poor formwork adhesion was solved, thus improving both grout leakage prevention and appearance quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI JIAOTOU TECHNOLOGY CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-05
AI Technical Summary
In the construction of rectangular bridge piers, the formwork is not tightly attached to the pier, which leads to leakage of concrete grout. Existing measures such as double-sided tape and foam adhesive are not very effective and can easily cause problems such as root rot, honeycomb pitting, and poor appearance quality.
A detachable rectangular pier anti-grout leakage device is designed, which combines a fixed part with an elastic unit. The elastic deformation characteristics of the elastic unit are used to adapt to the gap between the template and the pier to achieve a sealing effect and avoid grout leakage.
It effectively prevents grout leakage, ensures appearance quality, avoids intrusion into the main structure, and achieves a good sealing effect.
Smart Images

Figure CN224199787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge pier construction, and in particular to a detachable rectangular pier anti-grout leakage device. Background Technology
[0002] Rectangular piers are frequently used in high bridge piers due to their excellent bending resistance. However, during construction, the formwork becomes uneven after repeated impacts; the flatness of the upper and lower edges of the formwork is inconsistent; the vibrator interferes with and deforms the formwork during concrete compaction; and the concrete grout, being a liquid material, can penetrate any pore. If the formwork and pier are not tightly bonded, grout leakage at the bottom can easily occur during concrete pouring, leading to root rot, honeycomb-like pitting, and other defects that negatively impact the structural appearance and durability. In practice, double-sided tape and foam adhesive are often used to fill the gap between the formwork and pier. However, double-sided tape, due to its uniform thickness, cannot completely fill the uneven formwork, while foam adhesive, because the depth of penetration into the gap is uncontrollable, can easily cause intrusion into the main structure or poor appearance quality after demolding. Sometimes, the hardened foam adhesive falls off due to construction interference, also leading to grout leakage.
[0003] Therefore, a detachable rectangular pier anti-grout leakage device is needed to solve the above problems. Utility Model Content
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A detachable rectangular pier anti-grouting device, which is a grouting-proofing structure installed at the lower end of the formwork;
[0006] The anti-leakage structure includes a fixing part and an elastic unit; the fixing part is provided with a groove, and the elastic unit is partially housed in the groove; the fixing part is connected to the lower end of the template.
[0007] Preferably, the fixing part and the template are provided with drilled holes at corresponding positions, the first bolt and nut are used to fix the fixing part and the template, and the elastic unit is detachably housed in the groove.
[0008] Preferably, the top of the fixing part is provided with a through groove with a convex cross section, the screw heads of several first bolts are movably disposed in the through groove, the template is provided with several first fixing holes, the screw of the first bolt passes through the corresponding first fixing hole and is threadedly connected to the corresponding fixing nut; by tightening the fixing nut, the fixing part is fixedly connected to the lower end of the corresponding template.
[0009] Preferably, the anti-grout leakage structure further includes several second fixing parts with a groove-shaped cross section. Each of the two ends of the second fixing part is provided with a second connecting hole. Several third connecting holes pass through the fixing part and the elastic unit. The screw of the second bolt passes through the second connecting hole at the lower end of the second fixing part, the third connecting hole, and the second connecting hole at the upper end of the second fixing part in sequence from the bottom. Both second fixing nuts are threaded onto the second bolt. One of the second fixing nuts is located on the top surface of the second fixing part, and the other second fixing nut is located on the opposite side of the top surface of the second fixing part.
[0010] Preferably, the elastic unit is a rubber strip.
[0011] Furthermore, the elastic unit is in the form of a circular strip or a square strip.
[0012] Furthermore, the width of the elastic unit is greater than the width of the fixed part, and one side of the elastic unit extends into the inside of the template.
[0013] By adopting the above technical solution, this utility model achieves the following technological advancements compared to existing technologies: Utilizing the elastic deformation characteristics of the elastic unit, during the process of the template fitting to the pier column, the elastic deformation generated by squeezing the elastic unit adapts to gaps of varying widths between the template and the pier column, achieving a sealing effect and preventing grout leakage. Simultaneously, the elastic unit does not intrude into the main structure or gaps, achieving both grout leakage prevention and excellent appearance quality. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0015] Figure 1 This is a structural schematic diagram of the detachable rectangular pier anti-grout leakage device of this utility model;
[0016] Figure 2 This is another structural schematic diagram of the detachable rectangular pier anti-grout leakage device of this utility model;
[0017] Figure 3 This is another structural schematic diagram of the detachable rectangular pier anti-grout leakage device of this utility model.
[0018] Figure 4 This is another structural schematic diagram of the detachable rectangular pier anti-grout leakage device of this utility model.
[0019] Explanation of key component symbols:
[0020] Template 11 Pier 10 Fixing part 12 Elastic Unit 13 Second fixing part 14 Through slot 120 First bolt 110 First fixing hole 111 Second connecting hole 131 Third connecting hole 132 Second bolt 133 Second fixing nut 134
[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to imply non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.
[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0024] Please see Figure 1-4 This utility model embodiment provides a detachable rectangular pier anti-grouting device, which is an anti-grouting structure installed at the lower end of the template 11;
[0025] The anti-leakage structure includes a fixing part 12 and an elastic unit 13; the fixing part 12 is provided with a groove, and the elastic unit 13 is partially housed in the groove; the fixing part 12 is connected to the lower end of the template 11.
[0026] Please refer to Figure 2 In one embodiment of this utility model, drilled holes are provided at corresponding positions of the fixing part 12 and the template 11. The first bolt 110, in conjunction with the nut, fixes the fixing part 12 and the template 11. The elastic unit 13 is detachably housed in the groove. If it is necessary to remove the device and install it on another pier later, simply loosen the nut on the fixing part 12 and the elastic unit 13.
[0027] Please refer to Figure 3 In one embodiment of this utility model, the top of the fixing part 12 is provided with a through groove 120 with a convex cross-section. The screw heads of a plurality of first bolts 110 are movably disposed in the through groove 120. The template 11 is provided with a plurality of first fixing holes 111. The screw of the first bolt passes through the corresponding first fixing hole 111 and is threadedly connected to the corresponding fixing nut. By tightening the fixing nut, the fixing part 12 is fixedly connected to the lower end of the corresponding template 11. The screw head of the first bolt can move and adjust its position in the through groove. The position of the first bolt can be adjusted according to the different reserved holes of different pier templates, making it highly applicable.
[0028] Please refer to Figure 4 In one embodiment of this utility model, the anti-leakage structure further includes several second fixing parts 14 with groove-shaped cross-sections. Each of the second fixing parts 14 has a second connecting hole 131 at both ends. Several third connecting holes penetrate the fixing part 12 and the elastic unit 13. The thread of the second bolt 133 passes sequentially from the bottom through the second connecting hole 131 at the lower end of the second fixing part 14, the third connecting hole, and the second connecting hole 131 at the upper end of the second fixing part 14. Two second fixing nuts are threaded onto the second bolt 133. One second fixing nut 134 is located on the top surface of the second fixing part 14, and the other second fixing nut is located on the opposite side of the top surface of the second fixing part 14. By adjusting the positions of the two second fixing nuts, the second fixing part 14 is moved upwards, thereby tightly fixing the fixing part 12 to the lower end of the corresponding template 11. When disassembly is required, the positions of the second fixing nuts are adjusted to move the second fixing part 14 downwards, and the anti-leakage structure can be removed after the second bolt is pulled out.
[0029] In one embodiment of this utility model, the elastic unit 13 is a rubber strip.
[0030] Furthermore, the elastic unit 13 is in the shape of a circular strip or a square strip.
[0031] Furthermore, the width of the elastic unit 13 is greater than the width of the fixed part 12, and one side of the elastic unit 13 extends into the interior of the sealed structure formed by multiple templates 11. Utilizing the elastic deformation characteristics of the elastic unit 13, during the process of the template 11 fitting against the pier 10, the elastic deformation produced by compressing the elastic unit 13 adapts to the gaps of varying widths between the template and the pier, achieving a sealing effect. Simultaneously, the elastic unit 13 will not intrude into the main structure or gaps. This achieves the effects of preventing grout leakage and ensuring excellent appearance quality. The elastic unit 13 is wider than the fixed part 12 so that after the template 11 is closed, the extended elastic unit 13 has the corresponding deformation to seal the gap between the template 11 and the pier.
[0032] Furthermore, the sealed structure is a hollow cuboid structure with four templates 11 forming a through hole at the top and bottom.
[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A detachable rectangular pier anti-grout leakage device, characterized in that: A grout-proof structure installed at the bottom of the template; The anti-leakage structure includes a fixing part and an elastic unit; the fixing part is provided with a groove, and the elastic unit is partially housed in the groove; the fixing part is connected to the lower end of the template; the anti-leakage structure also includes several second fixing parts with a groove-shaped cross section, each of the two ends of the second fixing part is provided with a second connecting hole, and several third connecting holes pass through the fixing part and the elastic unit; the screw of the second bolt passes through the second connecting hole at the lower end of the second fixing part, the third connecting hole, and the second connecting hole at the upper end of the second fixing part in sequence from the bottom; two second fixing nuts are threadedly connected to the second bolt; one of the second fixing nuts is located on the top surface of the second fixing part, and the other second fixing nut is located on the opposite side of the top surface of the second fixing part.
2. The detachable rectangular pier anti-grouting device according to claim 1, characterized in that: The top of the fixing part is provided with a through groove with a convex cross section. The screw heads of several first bolts are movably disposed in the through groove. The template is provided with several first fixing holes. The screw of the first bolt passes through the corresponding first fixing hole and is threadedly connected to the corresponding fixing nut. By tightening the fixing nut, the fixing part is fixedly connected to the lower end of the corresponding template.
3. The detachable rectangular pier anti-grout leakage device as described in any one of claims 1-2, characterized in that: The elastic unit is a rubber strip.
4. The detachable rectangular pier anti-grout leakage device as described in claim 3, characterized in that: The elastic unit is in the shape of a circular strip or a square strip.
5. The detachable rectangular pier anti-grout leakage device as described in claim 4, characterized in that: The width of the elastic unit is greater than the width of the fixed part, and one side of the elastic unit extends into the inside of the template.