Sealing structure of bridge underwater pouring body template connecting part

Abstract

The utility model belongs to the technical field of bridge templates, and particularly relates to a sealing structure for a bridge underwater pouring body template connecting part, which comprises a template formed by splicing and combining a first plate body and a second plate body, and a sealing rubber strip arranged at the splicing part of the first plate body and the second plate body, the sealing rubber strip is arranged in a sealing cavity formed in the splicing position of the first plate body and the second plate body, the lower end of the sealing rubber strip is arranged on a splicing protruding strip integrally formed on the second plate body, and the splicing protruding strip is matched with a splicing groove formed in the first plate body. According to the utility model, the sealing rubber strip capable of deforming is arranged in the sealing cavity arranged at the splicing part of the template, and the sealing rubber strip generates proper deformation under the action of water pressure, so that the lip plates at the upper end and the lower end of the sealing rubber strip are tightly propped against the groove bodies at the corresponding positions, stable sealing connection is carried out, and the stability of sealing connection is improved; and the template splicing operation is simple and convenient, and the template is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge formwork, in particular to a sealing structure for a bridge underwater cast body formwork connection portion. Background Art

[0002] Bridge projects near or across rivers often encounter situations where the pile heads or pile bodies are located below the normal water level. Therefore, before pouring concrete, a cofferdam needs to be set up at the construction site to block the water outside the cofferdam, and the formwork needs to be supported inside the cofferdam for pouring. The construction cost of the cofferdam is high and the project volume is large, which seriously affects the progress of the project and increases the project cost. Therefore, without reaching the construction water level, the steel formwork is directly supported. After the formwork support is completed, the water in the internal cavity of the formwork is extracted, and the steel bars are tied and concrete is poured. However, under the action of water pressure, seepage is easily generated at the splicing parts of the formwork, affecting subsequent construction and making it inconvenient to use. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the deficiencies of the existing technology, the utility model provides a sealing structure for the connection parts of the template of the underwater cast body of the bridge, which solves the problem that under the action of water pressure, seepage is easily generated at the splicing parts of the template, affecting subsequent construction and making it inconvenient to use.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A sealing structure for the connection portion of a bridge underwater cast body formwork, comprising a formwork formed by splicing a first plate body and a second plate body, and a sealing rubber strip arranged at the splicing portion of the two plates, wherein the sealing rubber strip is arranged in a sealing cavity formed at the splicing portion of the first plate body and the second plate body, and the lower end of the sealing rubber strip is arranged on a splicing ridge integrally formed on the second plate body, the splicing ridge is cooperated with a splicing groove provided on the first plate body, the upper end of the sealing rubber strip abuts against the inner wall of the splicing groove, and a through hole provided on one side of the first plate body is connected to the splicing groove.

[0008] Furthermore, the upper and lower ends of the sealing rubber strip are respectively integrally provided with a first deformable sealing lip plate and a second deformable sealing lip plate, and the sealing rubber strip is located at the middle part of the upper and lower lip plates and is bent toward the perforated side to form an arc-shaped deformable sealing strip;

[0009] The two ends of the first sealing lip plate at the upper end of the sealing rubber strip respectively contact the first sealing grooves provided in the splicing groove, and a first deformation notch is provided on the side of the first sealing lip plate facing the first sealing groove;

[0010] The two ends of the second sealing lip plate at the lower end of the sealing rubber strip respectively abut against the fitting grooves opened on both sides of the bottom of the second sealing groove, and a second deformation notch is opened on the side of the second sealing lip plate facing the second sealing groove.

[0011] Furthermore, the retaining strips arranged on both sides of the upper portion of the splicing convex strip abut against the sealing rubber strip, and the retaining strips are fixedly connected to the splicing convex strip.

[0012] Furthermore, the water-facing surface of the template formed by splicing and assembling the first plate body and the second plate body is configured to be a surface with perforations.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a sealing structure for the connection part of the formwork of the underwater cast-in-place structure of a bridge, which has the following beneficial effects:

[0015] The utility model provides a deformable sealing rubber strip installed in a sealing cavity at the template splicing part. Under the action of water pressure, the sealing rubber strip produces appropriate deformation, so that the lip plates at the upper and lower ends of the sealing rubber strip tightly contact the groove body at the corresponding position, and a stable sealing connection is performed, thereby improving the stability of the sealing connection. The greater the water pressure, the better the sealing effect. The utility model has a simple structure, and the template splicing operation is simple and convenient, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is an exploded view of the utility model;

[0018] Figure 3 It is a partial cross-sectional view of the splicing portion of the first plate body in the present utility model;

[0019] Figure 4 It is a partial cross-sectional view of the splicing portion of the second plate body in the present utility model;

[0020] Figure 5 It is a structural schematic diagram of the sealing rubber strip in the utility model.

[0021] In the figure: 1. First plate; 101. Perforation; 102. Splicing groove; 103. First sealing groove; 2. Second plate; 201. Splicing ridge; 202. Second sealing groove; 3. Sealing rubber strip; 301. First sealing lip plate; 302. First deformation notch; 303. Second sealing lip plate; 304. Second deformation notch; 4. Blocking strip. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, an embodiment of the present invention proposes: a sealing structure for the connection part of the template of the underwater cast body of a bridge, including a template formed by splicing and combining a first plate body 1 and a second plate body 2, and a sealing rubber strip 3 arranged at the splicing part of the two. The sealing rubber strip 3 is arranged in a sealing cavity formed at the splicing part of the first plate body 1 and the second plate body 2. The sealing rubber strip 3 is used to seal the splicing parts of the two mutually spliced plates together to avoid seepage at the template splicing part under water, ensure the stable use of the template, and thus pour concrete in the pouring cavity formed in the template. The lower end of the sealing rubber strip 3 is arranged on the splicing ridge 201 integrally formed on the second plate body 2 to ensure that the sealing rubber strip 3 is stably installed on one of the spliced plates, so that the two plates can directly seal during the mutual splicing process. The rubber strip 3 is placed in the sealing cavity formed at the splicing part to seal the splicing part, thereby ensuring the stable use of the splicing template. The splicing ridge 201 is matched with the splicing groove 102 opened on the first plate body 1 to ensure that the two spliced plates are quickly spliced together, so that they are combined to form a template. The upper end of the sealing rubber strip 3 is in contact with the inner wall of the splicing groove 102 to achieve a sealed connection for stable use. The through hole 101 opened on one side of the first plate body 1 is connected with the splicing groove 102 to ensure that during the use of the template, the water on the water-facing surface is drained into the splicing groove 102, and the sealing rubber strip 3 in the sealing cavity is directly squeezed to deform it, and the lip plates at both ends are tightly in contact with the groove body at the corresponding position, thereby improving the stability of the sealing connection, so that the greater the water pressure, the better the sealing effect.

[0025] like Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, in some embodiments, the upper and lower ends of the sealing rubber strip 3 are respectively integrally provided with a deformable first sealing lip plate 301 and a second sealing lip plate 303, and the sealing rubber strip 3 is located at the middle part of the upper and lower lip plates and is bent toward the side of the through-hole 101 to form an arc-shaped deformable sealing strip. The sealing lips provided at both ends of the sealing rubber strip 3 are used to enhance the overall sealing effect. When pushed by an external force, they can be deformed and pressed against the sealing groove body at the corresponding position to achieve a stable and effective sealing connection. At the same time, the arc plate body formed by the outward convexity at the middle part is straight The water pressure on the water-facing surface of the template can directly act on the curved water-facing surface of the sealing rubber strip 3. Under the action of the water pressure, the sealing rubber strip 3 is effectively squeezed and pushed, causing the sealing rubber strip 3 to deform and transmit the water pressure to the lip plates at both ends. As a result, under the action of external force, the lip plates at both ends are deformed at the deformation notch, ensuring that both sides of the lip plates are in contact with the groove body at the corresponding position, so as to achieve a stable and effective sealing connection. The greater the water pressure, the tighter the squeezing, so that the sealing effect of the sealing rubber strip 3 is better.

[0026] The two ends of the first sealing lip plate 301 at the upper end of the sealing rubber strip 3 respectively abut against the first sealing groove 103 provided in the splicing groove 102. A first deformation notch 302 is provided on the side of the first sealing lip plate 301 facing the first sealing groove 103. When the two plates are spliced together and squeeze the sealing rubber strip 3, the two ends of the first sealing lip plate 301 can tightly abut against the first sealing groove 103, thereby achieving a stable sealing connection between the two. The deformation notch can smoothly deform under the action of external force, ensuring that the edge of the lip plate can tightly abut against and squeeze against the groove body. The greater the external force, the tighter the squeezing and the better the sealing effect.

[0027] The two ends of the second sealing lip plate 303 at the lower end of the sealing rubber strip 3 respectively abut against the fitting grooves opened on both sides of the bottom of the second sealing groove 202. A second deformation notch 304 is opened on the side of the second sealing lip plate 303 facing the second sealing groove 202, so that when the two plates squeeze the sealing rubber strip 3 during the mutual splicing process, the two ends of the second sealing lip plate 303 can tightly abut against the fitting grooves at the bottom of the second sealing groove 202, thereby achieving a stable sealing connection between the two. The deformation notch can produce smooth deformation under the action of external force, ensuring that the edge of the lip plate can tightly abut against and be squeezed in the fitting groove. The greater the external force, the tighter the squeezing and the better the sealing effect.

[0028] like Figure 1 and Figure 2As shown, in some embodiments, the retaining strips 4 arranged on both sides of the upper part of the splicing ridge 201 abut against the sealing rubber strip 3, and the retaining strips 4 are fixedly connected to the splicing ridge 201. The retaining strips 4 are used to limit and fix the sealing rubber strip 3 on the splicing ridge 201, so that the sealing rubber strip 3 can be stably installed and used. At the same time, the abutment of the retaining strip 4 on the sealing rubber strip 3 does not limit the deformation of the lower end under the action of external force.

[0029] like Figure 1 As shown, in some embodiments, the water-facing surface of the template formed by the splicing combination of the first plate body 1 and the second plate body 2 is set to be a surface with a perforation 101, so that during use, the water blocked on the outside of the template can enter the sealing cavity formed at the plate body through the perforation 101, so that the water pressure can directly act on the sealing rubber strip 3, thereby causing the sealing rubber strip 3 to deform under the action of the water pressure, and the two ends tightly contact the sealing grooves at the corresponding positions, so that the sealing rubber strip 3 can stably seal the splicing part of the two plate bodies. The greater the water pressure, the better the sealing effect.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sealing structure for a bridge underwater cast-in-place formwork connection portion, comprising a formwork formed by splicing a first plate (1) and a second plate (2), and a sealing rubber strip (3) disposed at the splicing portion of the first plate (1) and the second plate (2), characterized in that: The sealing rubber strip (3) is placed in a sealing cavity formed at the joint of the first plate body (1) and the second plate body (2), the lower end of the sealing rubber strip (3) is placed on a splicing ridge (201) integrally formed on the second plate body (2), the splicing ridge (201) is matched with the splicing groove (102) opened on the first plate body (1), the upper end of the sealing rubber strip (3) abuts against the inner wall of the splicing groove (102), and the through hole (101) opened on one side of the first plate body (1) is connected to the splicing groove (102).

2. The sealing structure for the connection portion of the formwork of an underwater cast-in-place bridge according to claim 1, characterized in that: The upper and lower ends of the sealing rubber strip (3) are respectively integrally provided with a deformable first sealing lip plate (301) and a second sealing lip plate (303), and the sealing rubber strip (3) is located at the middle part of the upper and lower lip plates and is bent toward one side of the through hole (101) to form an arc-shaped deformable sealing strip.

3. The sealing structure for the connection portion of the formwork of the underwater cast structure of a bridge according to claim 2, characterized in that: The two ends of the first sealing lip plate (301) at the upper end of the sealing rubber strip (3) respectively contact the first sealing groove (103) opened in the splicing groove (102), and the first sealing lip plate (301) is provided with a first deformation notch (302) on one side facing the first sealing groove (103).

4. The sealing structure for the connection portion of the formwork of an underwater cast-in-place bridge according to claim 2, characterized in that: The two ends of the second sealing lip plate (303) at the lower end of the sealing rubber strip (3) respectively contact the fitting grooves opened on both sides of the bottom of the second sealing groove (202), and the second sealing lip plate (303) is provided with a second deformation notch (304) on one side facing the second sealing groove (202).

5. The sealing structure for the connection portion of the formwork of an underwater cast-in-place bridge according to claim 1, characterized in that: The blocking strips (4) arranged on both sides of the upper part of the splicing convex strip (201) abut against the sealing rubber strip (3), and the blocking strips (4) are fixedly connected to the splicing convex strip (201).

6. The sealing structure for the connection portion of the formwork of an underwater cast-in-place bridge structure according to claim 1, characterized in that: The water-facing surface of the template formed by splicing and assembling the first plate body (1) and the second plate body (2) is configured as a surface provided with a perforation (101).

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