Steel formwork structure of river barrage pier and construction method thereof

Abstract

The application discloses a steel formwork structure of a river barrage pier and a construction method thereof, wherein the steel formwork structure of the river barrage pier comprises a steel formwork and a mounting structure penetrating through the steel formwork, and the mounting structure can be hung on the outer wall of a steel reinforcement cage of the pier; the mounting structure comprises a detachable and fixedly connected cylinder cover and a cylinder sleeve, the cylinder cover is located at one end of the cylinder sleeve, a paint bag is arranged in the end of the cylinder sleeve, and a sliding block one is slidably inserted into the other end of the cylinder sleeve; the sliding block one can push out the paint bag from the one end of the cylinder sleeve by sliding. The steel formwork of the river barrage pier can be directly and fixedly connected with the steel reinforcement cage of the pier, the trouble of erecting a full-frame scaffold is saved, the construction time is greatly saved, the construction efficiency of the river barrage pier is improved, the steel reinforcement of the pier is not exposed, the steel reinforcement corrosion is avoided, and the quality of the river barrage pier is ensured.

Description

Technical Field

[0001] This invention relates to the field of construction technology for river dam piers, and in particular to a steel formwork structure for river dam piers and its construction method. Background Technology

[0002] Currently, the conventional construction process for the gate piers of river dams involves first preparing the steel reinforcement cage for the piers, then erecting a full-span scaffold, followed by installing and fixing the steel formwork for the piers on the scaffold, and finally pouring concrete. The most time-consuming and labor-intensive task in the entire construction process is erecting the full-span scaffold. The scaffold serves as the foundation for the subsequent installation and fixing of the steel formwork for the piers. Therefore, it is necessary to ensure that the scaffold is firm and stable during construction, and the requirements for the quality of the construction are high. As a result, it is inevitable that a long time will be spent on erecting scaffolds over a large area, which has a significant impact on the construction efficiency of the gate piers of river dams. Summary of the Invention

[0003] The main objective of this invention is to propose a steel formwork structure for a river-blocking gate pier and its construction method, aiming to solve the problem of low construction efficiency of current river-blocking gate piers.

[0004] To address the aforementioned problems, this invention proposes a steel formwork structure for a dam pier, comprising a steel formwork and an installation structure that penetrates the steel formwork, wherein the installation structure can be suspended from the outer wall of the reinforcing cage of the dam pier. The installation structure includes a detachably fixedly connected cap and a tube. The cap is located at one end of the tube, and a paint bag is provided inside the tube at that end. A slider is slidably inserted inside the other end of the tube. The slider can push the paint bag out from one end of the tube by sliding. The steel template is fitted over the insert cylinder, and the cylinder cover is equipped with hooks that can be suspended from the steel reinforcement cage of the gate pier.

[0005] In one embodiment, the cap is screwed to one end of the insert, and the outer wall of the insert is provided with a conical surface extending from the cap to the steel template, the diameter of the conical surface gradually increasing from the cap to the steel template.

[0006] In one embodiment, one end of the insert is provided with a through hole three, and the other end of the insert is provided with a through hole four. The coating pack is located in the through hole three, and the diameter of the through hole four is smaller than the diameter of the through hole three. The slider 1 includes a fixedly connected slide plate 1 and slide plate 2. The slide plate 1 is slidably installed in the through hole 3, and the slide plate 2 is slidably installed in the through hole 4.

[0007] In one embodiment, a positioning pin is provided on the side of the insert cylinder opposite to the cylinder cover to prevent the steel template from sliding to the other end of the insert cylinder.

[0008] In one embodiment, both the insert and the slider are provided with a coaxial through hole, and the positioning pin passes through the through hole.

[0009] In one embodiment, the hook is fastened to the reinforcing cage, and the outer wall of the reinforcing cage is in close contact with the side of the cylinder cover where the hook is provided.

[0010] In one embodiment, the hook is provided with an anti-slip strip that is pressed against the reinforcing cage.

[0011] In one embodiment, a sliding groove is provided on the side of the cylinder cover where the hook is provided. A pair of sliders are slidably installed in the sliding groove. The sliders are provided with curved surfaces. The pair of sliders and their curved surfaces are symmetrically distributed with the hook as the center. A double-ended screw is provided in the sliding groove and screwed to the pair of sliders. Rotating the double-ended screw can drive the pair of sliders to move closer or further apart. When one of the steel bars inserted into the hook on the steel cage is bent, the bent steel bar can closely adhere to the curved surface of a pair of sliders.

[0012] Furthermore, this invention also proposes a construction method for the steel formwork structure of a river-blocking gate pier, comprising: Place slider one and paint bag into the insert, insert positioning pin into the insert, and use the positioning pin to fix slider one. The steel template is placed on the insert, and then the insert and the cover are connected. The hook is suspended on the outer wall of the steel cage of the gate pier, and two adjacent steel templates are pressed tightly together. The hook is fastened to the steel cage, and the outer wall of the steel cage is pressed tightly against the side of the cylinder cover where the hook is provided. After steel formwork is suspended around the entire perimeter of the reinforcing cage, concrete can be poured to prepare the gate pier. After the concrete has hardened, remove the positioning pins, take off the steel formwork, and then separate the insert and the cover. The cover remains inside the gate pier, and a pit appears on the outer wall of the gate pier. While separating the insert and the cover, press the slider to push the paint bag out of the insert. Under the pressure of the slider and the cover, the paint bag is squeezed and broken, and the glue inside the paint bag overflows, filling the pit and sealing it.

[0013] In one embodiment, when a steel bar inserted into the hook on the steel cage is bent, rotating the double-ended screw drives a pair of sliders to move closer to each other, so that the bent steel bar is in close contact with the curved surface of the pair of sliders.

[0014] Beneficial effects: The steel formwork of the dam pier of the present invention can be directly fixedly connected to the steel cage of the dam pier, eliminating the trouble of building a full scaffold, greatly saving construction time, improving the construction efficiency of the dam pier, and the dam pier has no exposed steel bars, avoiding steel bar corrosion and ensuring the quality of the dam pier. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the steel formwork structure of the dam pier in Embodiment 1 of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the steel formwork structure of the dam pier in Embodiment 1 of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the steel formwork structure of the dam pier in Embodiment 1 of the present invention. Figure 3 ; Figure 4 This is a construction diagram of the steel formwork structure for the dam piers of the river-blocking gate in Embodiment 1 of the present invention. Figure 1 ; Figure 5 This is a construction diagram of the steel formwork structure for the dam piers of the river-blocking gate in Embodiment 1 of the present invention. Figure 2 ; Figure 6 This is a construction diagram of the steel formwork structure for the dam piers of the river-blocking gate in Embodiment 1 of the present invention. Figure 3 ; Figure 7 This is a schematic diagram of the steel formwork structure of the dam pier in Embodiment 2 of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the steel formwork structure of the dam pier in Embodiment 2 of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the installation structure in Embodiment 2 of the present invention.

[0017] The annotations in the attached figures are explained as follows: 1. Gate pier; 2. Template 1; 3. Through hole 1; 4. Insert cylinder; 5. Conical surface 1; 6. Cylinder cover; 7. Hook; 8. Reinforcing cage; 9. Paint pack; 10. Slider 1; 11. Through hole 2; 12. Positioning pin; 13. Through hole 3; 14. Through hole 4; 15. Slide plate 1; 16. Slide plate 2; 17. Paint layer; 18. Dent; 19. Conical surface 2; 20. Anti-slip strip; 21. Template 2; 22. Slide groove; 23. Slider 2; 24. Curved surface; 25. Double-ended screw. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0022] This invention proposes a steel formwork structure for a dam 1 of a river-blocking gate. The steel formwork structure of the dam 1 can be directly fixedly connected to the steel reinforcement cage 8 of the dam 1, eliminating the trouble of building a full-span scaffold, greatly saving construction time, improving the construction efficiency of the dam 1, and the dam 1 has no exposed steel reinforcement, avoiding steel reinforcement corrosion and ensuring the quality of the dam 1.

[0023] The steel formwork structure of the dam pier 1 of the present invention will be described in detail below with two embodiments. Example 1

[0024] like Figures 1-3 As shown, the steel formwork structure of the dam pier 1 in this embodiment includes a steel formwork and an installation structure that penetrates the steel formwork. The steel formwork is formwork 2, which is a flat plate with a rectangular cross-section. Figures 4-6 As shown, the installation structure can be suspended on the outer wall of the steel cage 8 of the gate pier 1, thus eliminating the trouble of building scaffolding, greatly saving construction time, and improving the construction efficiency of the gate pier 1 of the river dam.

[0025] Specifically, in this embodiment, such as Figures 1-6 As shown, the installation structure includes a detachably fixedly connected cylindrical cover 6 and insert 4. Preferably, the cylindrical cover 6 and insert 4 are threaded together. The cylindrical cover 6 is located at one end of the insert 4. Preferably, to facilitate the removal of the insert 4 from the outer wall of the gate pier 1 after the concrete has solidified, one end of the insert 4 can be inserted into the cylindrical cover 6, while the cylindrical cover 6 and insert 4 are threaded together. Figure 4 As shown, this design also ensures that the cylinder cover 6 is firmly fixed inside the gate pier 1 after the concrete has solidified, making it less likely to fall off or loosen, thus extending the sealing durability and stability of the pit 18.

[0026] In this embodiment, as Figures 1-6 As shown, a paint pack 9 is provided inside one end of the insert 4. The paint pack 9 is filled with glue. The glue is used to seal the pit 18 to prevent moisture in the air from contacting the cover 6 and the reinforcing cage 8 and causing them to rust. Furthermore, the cover 6 can be made of plastic. This design can prevent the cover 6 from rusting and causing the reinforcing cage 8 to rust as well, thus protecting the safety of the reinforcing cage 8 and helping to extend the service life of the gate pier 1.

[0027] In this embodiment, the adhesive is a weather-resistant adhesive or sealant. This type of adhesive has good sealing properties, is resistant to corrosion and weathering, has stable performance, and can effectively seal and isolate air for a long time.

[0028] In this embodiment, as Figures 1-6 As shown, a slider 10 is slidably inserted inside the other end of the insert 4. The slider 10 can push the paint bag 9 out from one end of the insert 4 by sliding. Furthermore, to prevent the slider 10 from sliding out from the other end of the insert 4 and to facilitate the installation and construction of the steel formwork structure, as shown... Figure 4As shown, one end of the insert 4 is provided with a through hole 3 13, and the other end of the insert 4 is provided with a through hole 4 14. The through holes 3 13 and 4 14 are coaxially connected, and the diameter of the through hole 4 14 is smaller than that of the through hole 3 13. The paint pack 9 is located in the through hole 3 13. The slider 10 includes a fixedly connected sliding plate 15 and a sliding plate 2 16. The sliding plate 15 is slidably installed in the through hole 3 13, and the sliding plate 2 16 is slidably installed in the through hole 4 14. The sliding plate 15 cannot slide into the through hole 4 14, thereby preventing the slider 10 from sliding out from the other end of the insert 4, which facilitates the installation and construction of the steel formwork structure.

[0029] In this embodiment, the steel template has a through hole 3, the insert 4 passes through the through hole 3, and the steel template is fitted onto the insert 4. Further, as... Figures 1-5 As shown, both the insert 4 and the slider 10 are provided with coaxial through holes 2 11. A positioning pin 12 is installed through the through hole 2 11. The positioning pin 12 can be tightly attached to the steel template to prevent the steel template from sliding out from the other end of the insert 4, which facilitates the installation and construction of the steel template structure.

[0030] In this embodiment, as Figures 1-6 As shown, hooks 7 are provided on the outer surface of the cylindrical cover 6. The number of hooks 7 can be flexibly arranged according to the diameter of the cylindrical cover 6. The hooks 7 can be suspended on the steel cage 8 of the gate pier 1, and the hooks 7 are clamped on a steel bar on the steel cage 8. The outer wall of the steel cage 8 is close to the side of the cylindrical cover 6 where the hooks 7 are provided. With this design, after the hooks 7 are clamped on the steel cage 8, the cylindrical cover 6 cannot shake. It can only be moved upward to separate the hooks 7 from the steel cage 8. Thus, the template 2 is directly fixedly connected to the steel cage 8 of the gate pier 1 through the installation structure. The template 2 is installed firmly and does not shake. It can effectively replace scaffolding, greatly save construction time, and improve the construction efficiency of the gate pier 1 of the river dam.

[0031] In this embodiment, as Figures 1-5 As shown, the outer wall of the insert 4 is provided with a conical surface 5 extending from the cylinder cover 6 to the template 2. The diameter of the conical surface 5 gradually increases from the cylinder cover 6 to the steel template. This design facilitates the separation of the insert 4 from the concrete gate pier 1. Figure 4 As shown, after the concrete gate pier 1 is poured and the concrete has solidified, the positioning pin 12 needs to be removed, the template 1 2 needs to be taken off, and then the insert 4 needs to be rotated to separate the insert 4 from the cover 6. At this time, a pit 18 appears on the outer wall of the concrete gate pier 1. The pit 18 is formed by the presence of the insert 4 when the concrete is poured. The cover 6 is fixed to the bottom of the pit 18 by the concrete and cannot be moved. A cone surface 1 5 is set on the outer wall of the insert 4 to facilitate the rotation of the insert 4 and separation from the cover 6. Correspondingly, a cone surface 2 19 is formed on the pit 18 at the position of the cone surface 1 5.

[0032] In this embodiment, as Figures 5-6 As shown, during the process of removing the insert 4 from the recess 18, pressing the slider 10 pushes the paint bag 9 out of the insert 4 and into the recess 18. Then, pressing the slider 10 continues, and under the pressure of the slider 10 and the cap 6, the paint bag 9 is broken. The glue inside the paint bag 9 overflows and fills the recess 18, forming a paint layer 17 and sealing the recess 18. The glue has high viscosity, so the glue overflowing from the paint bag 9 will not flow out of the recess 18. The glue filling the recess 18 and sealing the recess 18 can prevent the cap 6 from being corroded. The steel cage 8 is also protected from corrosion, which effectively protects its safety and helps extend the service life of the gate pier 1. If the cylinder cover 6 is made of plastic, the glue fills the pit 18 to form a coating layer 17 and seals the pit 18, which can isolate external moisture from entering the pit 18 and contacting the steel cage 8, thus protecting the safety of the steel cage 8 and preventing steel corrosion from affecting the quality of the gate pier 1. This achieves the goal of no exposed steel bars on the gate pier 1, avoiding steel corrosion and ensuring the quality of the gate pier 1.

[0033] In this embodiment, further, such as Figure 3 As shown, the hook 7 is provided with an anti-slip strip 20 that is pressed against the reinforcing cage 8. This design can enhance the anti-slip performance of the hook 7, making it less likely for the hook 7 to slide on the reinforcing steel, which helps to enhance the stability of the steel formwork installation. Example 2

[0034] The difference between this embodiment and embodiment one is that the steel template is template two 21, and template two 21 is an arc-shaped plate. In this case, the side of the cylinder cover 6 where the hook 7 is provided is provided with a sliding groove 22, such as... Figures 7-9 As shown, a pair of sliders 23 are slidably installed in the groove 22. The sliders 23 are provided with curved surfaces 24. The pair of sliders 23 and their curved surfaces 24 are symmetrically distributed with the hook 7 as the center. The groove 22 is provided with a double-headed screw 25 that is screwed to the pair of sliders 23. Rotating the double-headed screw 25 can drive the pair of sliders 23 to move closer or further apart. When a steel bar inserted into the hook 7 on the steel cage 8 is bent, the bent steel bar can be closely attached to the curved surfaces 24 of the pair of sliders 23, thereby realizing that the template 21 is directly fixedly connected to the steel cage 8 of the gate pier 1 through the installation structure.

[0035] It should be noted that the steel template is parallel to the outer side of the steel cage 8 at its suspension position on the steel cage 8. Therefore, when the template 2 is a flat plate, the steel bars at its suspension position on the steel cage 8 are straight steel bars. The template 21 is an arc-shaped plate, and the steel bars at its suspension position on the steel cage 8 are curved steel bars. The side of the cylinder cover 6 with the hook 7 is flat. In order to ensure that the cylinder cover 6 does not shake after the hook 7 is suspended on the curved steel bar, a pair of sliders 23 are provided on the cylinder cover 6. The curved surface 24 of the pair of sliders 23 is used to press against the curved steel bar to fix the cylinder cover 6, so that the cylinder cover 6 does not shake. Thus, the template 21 is directly fixedly connected to the steel cage 8 of the gate pier 1 through the installation structure. Example 3

[0036] This embodiment proposes a construction method for the steel formwork structure of the gate pier 1 of a river-blocking gate, including: S1. Place slider 10 and paint bag 9 into insert 4, insert positioning pin 12 into insert 4, and use positioning pin 12 to fix slider 10 to prevent slider 10 from accidentally pushing paint bag 9 out of insert 4 and causing paint bag 9 to break. S2. Place the steel template onto the insert 4, and then fix the insert 4 and the cover 6 together. S3. Hook 7 is suspended on the outer wall of the steel cage 8 of the gate pier 1, and two adjacent steel formworks are tightly attached. The hook 7 is clamped on the steel cage 8. The outer wall of the steel cage 8 is tightly attached to the side of the cylinder cover 6 where the hook 7 is provided. Thus, the steel formwork is directly fixedly connected to the steel cage 8 of the gate pier 1 through the installation structure, which effectively replaces scaffolding, greatly saves construction time, and improves the construction efficiency of the gate pier 1 of the river dam. S4. After the steel formwork is suspended around the entire perimeter of the steel cage 8, concrete can be poured to prepare the gate pier 1. S5. After the concrete has solidified, remove the positioning pin 12, take off the steel formwork, and then separate the insert 4 and the cover 6. The cover 6 remains inside the gate pier 1 and is fixed by the concrete. After the insert 4 leaves the gate pier 1, a pit 18 will appear on the outer wall of the gate pier 1. Therefore, while separating the insert 4 and the cover 6, press the slider 10 to push the paint bag 9 out of the insert 4 and into the pit 18. Then continue to push the slider 10. Under the pressure of the slider 10 and the cover 6, the paint bag 9 will be broken. The glue in the paint bag 9 will overflow and fill the pit 18 to form a paint layer 17 and seal the pit 18, preventing water vapor from contacting the steel cage 8 and the cover 6, avoiding steel corrosion and affecting the quality of the gate pier 1. This achieves the goal of no steel leakage on the gate pier 1, avoiding steel corrosion and ensuring the quality of the gate pier 1.

[0037] In this embodiment, the steel formwork includes formwork 1 2 and formwork 21. Formwork 1 2 is the formwork 1 2 described in Embodiment 1, and formwork 21 is the formwork 21 described in Embodiment 2.

[0038] In this embodiment, when a steel bar inserted into the hook 7 on the steel cage 8 is bent, the double-headed screw 25 is rotated to drive a pair of sliders 23 to move closer to each other, so that the bent steel bar is in close contact with the curved surface 24 of the pair of sliders 23, thereby realizing that the template 21 is directly fixedly connected to the steel cage 8 of the gate pier 1 through the installation structure.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A steel formwork structure for a river-blocking gate pier, characterized in that, It includes steel formwork and an installation structure that penetrates the steel formwork, the installation structure being suspended from the outer wall of the steel cage of the gate pier; The installation structure includes a detachably fixedly connected cap and a tube. The cap is located at one end of the tube, and a paint bag is provided inside the tube at that end. A slider is slidably inserted inside the other end of the tube. The slider can push the paint bag out from one end of the tube by sliding. The steel template is fitted over the insert cylinder, and the cylinder cover is equipped with hooks that can be suspended from the steel reinforcement cage of the gate pier.

2. The steel formwork structure for a river-blocking gate pier as described in claim 1, characterized in that, The cap is screwed to one end of the insert. The outer wall of the insert has a conical surface extending from the cap to the steel template. The diameter of the conical surface gradually increases from the cap to the steel template.

3. The steel formwork structure for a river-blocking gate pier as described in claim 1, characterized in that, One end of the insert is provided with a through hole three, and the other end of the insert is provided with a through hole four. The coating pack is located in the through hole three, and the diameter of the through hole four is smaller than the diameter of the through hole three. The slider 1 includes a fixedly connected slide plate 1 and slide plate 2. The slide plate 1 is slidably installed in the through hole 3, and the slide plate 2 is slidably installed in the through hole 4.

4. The steel formwork structure for a river-blocking gate pier as described in claim 1, characterized in that, A positioning pin is provided on the side of the insert cylinder opposite to the cylinder cover to prevent the steel template from sliding to the other end of the insert cylinder.

5. The steel formwork structure for a river-blocking gate pier as described in claim 4, characterized in that, Both the insert and the slider are provided with a coaxial through hole, and the positioning pin passes through the through hole.

6. The steel formwork structure for a river-blocking gate pier as described in claim 1, characterized in that, The hook is fastened to the reinforcing cage, and the outer wall of the reinforcing cage is in close contact with the side of the cylinder cover where the hook is located.

7. The steel formwork structure for a river-blocking gate pier as described in claim 1, characterized in that, The hook is equipped with an anti-slip strip that is pressed against the reinforcing cage.

8. The steel formwork structure for a river-blocking gate pier as described in claim 1, characterized in that, The cylinder cover has a sliding groove on the side where the hook is provided. A pair of sliders are slidably installed in the sliding groove. The sliders are curved. The pair of sliders and their curved surfaces are symmetrically distributed with the hook as the center. A double-ended screw is provided in the sliding groove and screwed to the pair of sliders. Rotating the double-ended screw can drive the pair of sliders to move closer or further apart. When one of the steel bars inserted into the hook on the steel cage is bent, the bent steel bar can closely adhere to the curved surface of a pair of sliders.

9. The construction method of the steel formwork structure for the dam pier as described in claim 8, characterized in that, include: Place slider one and paint bag into the insert, insert positioning pin into the insert, and use the positioning pin to fix slider one. The steel template is placed on the insert, and then the insert and the cover are connected. The hook is suspended on the outer wall of the steel cage of the gate pier, and two adjacent steel templates are pressed tightly together. The hook is fastened to the steel cage, and the outer wall of the steel cage is pressed tightly against the side of the cylinder cover where the hook is provided. After steel formwork is suspended around the entire perimeter of the reinforcing cage, concrete can be poured to prepare the gate pier. After the concrete has hardened, remove the positioning pins, take off the steel formwork, and then separate the insert and the cover. The cover remains inside the gate pier, and a pit appears on the outer wall of the gate pier. While separating the insert and the cover, press the slider to push the paint bag out of the insert. Under the pressure of the slider and the cover, the paint bag is squeezed and broken, and the glue inside the paint bag overflows, filling the pit and sealing it.

10. The construction method of the steel formwork structure for the dam pier as described in claim 9, characterized in that, When a steel bar inserted into the hook on the steel cage is bent, the double-headed screw is rotated to drive a pair of sliders to move closer to each other, so that the bent steel bar is in close contact with the curved surface of the pair of sliders.

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