Pier creeping formwork construction structure and method

Abstract

The invention relates to the technical field of bridge construction, and particularly discloses a bridge pier creeping formwork construction structure and method.The construction structure comprises a poured pier body, and creeping formwork units are arranged on the periphery of the poured pier body; the climbing formwork unit comprises a climbing guide rail, a lower formwork and an upper formwork, the climbing guide rail is detachably arranged on a poured pier body, the lower formwork is arranged on the climbing guide rail in a climbing mode, a locking mechanism corresponding to the climbing guide rail is arranged on the lower formwork, and the upper formwork is arranged above the lower formwork and corresponds to a pier body to be poured; the upper formwork comprises a pouring formwork and an upper stress frame, the pouring formwork is vertically arranged and detachably connected with the upper stress frame, the upper formwork can horizontally move in the direction perpendicular to the pier body, and the horizontal distance between the pouring formwork and the pier body can be conveniently adjusted. According to the invention, concrete temperature control can be realized while creeping formwork construction is carried out, cracks are prevented, the construction efficiency and the construction quality are improved, and meanwhile, the safety of the formwork in the climbing process can be ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, relates to pier climbing formwork construction, and specifically relates to a pier climbing formwork construction structure and method. Background Art

[0002] In bridge construction, the construction of bridge piers is a crucial link. Traditional bridge pier construction methods often face problems such as low efficiency, high cost and difficult quality control. In order to solve these problems, climbing formwork construction technology came into being.

[0003] The climbing formwork system is an efficient layer-by-layer concrete pouring construction method. It uses a climbing device to climb the formwork system along the surface of the pier and pour concrete layer by layer until the designed height is reached. This method not only improves construction efficiency, but also helps control the pouring quality of concrete and the geometric dimensions of the pier.

[0004] However, there are still some urgent problems to be solved in the existing climbing formwork construction technology. Especially when it comes to large-volume concrete, due to the influence of hydration heat, the internal temperature of the concrete rises sharply, which is prone to temperature cracks. The traditional approach is to set up an independent temperature control system during the construction process to reduce the temperature of the concrete. It is difficult to achieve good temperature control while ensuring construction efficiency, and there is a lot of waste of water resources.

[0005] In addition, the climbing formwork system faces the risk of unexpected formwork slippage during the climbing process. This slippage may be caused by a variety of factors, such as a loose connection between the guide rail and the formwork, an unreasonable design of the anti-slip mechanism, or operational errors. The slippage of the formwork will not only affect the construction progress, but also pose a safety hazard to construction personnel and equipment. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a pier climbing formwork construction structure and method. The present invention can achieve concrete temperature control while carrying out climbing formwork construction, prevent cracks from occurring, improve construction efficiency and quality, and at the same time ensure the safety of the formwork during the climbing process.

[0007] The technical solution of the present invention is achieved in this way: A pier climbing formwork construction structure includes a cast pier body, and climbing formwork units are respectively arranged around the cast pier body; the climbing formwork units include a climbing guide rail, a lower formwork and an upper formwork, the climbing guide rail is detachably arranged on the cast pier body, the lower formwork can be climbed and arranged on the climbing guide rail, and a locking mechanism corresponding to the climbing guide rail is provided on the lower formwork to prevent the lower formwork from sliding down, and the upper formwork is arranged above the lower formwork and corresponds to the pier body to be cast.

[0008] The upper formwork comprises a casting template and an upper force-bearing frame. The casting template is vertically arranged and detachably connected to the upper force-bearing frame. The upper formwork can move horizontally in a direction perpendicular to the pier body, so as to adjust the horizontal distance from the casting template to the pier body.

[0009] Furthermore, the lower template is a rectangular frame composed of a plurality of horizontally arranged first cross beams and vertically arranged first vertical beams.

[0010] Furthermore, the climbing guide rail includes two advancing guide rails and two force-bearing guide rails vertically arranged on the cast pier body, the two advancing guide rails are arranged at intervals and located between the two force-bearing guide rails, and the lower ends of the two force-bearing guide rails extend beyond the advancing guide rails by a certain length, and a first guide rail groove is provided on the first vertical beam of the lower formwork corresponding to the two advancing guide rails and the two force-bearing guide rails, and the first guide rail groove is clamped on the climbing guide rail, and a connecting beam is provided at the lower ends of the two force-bearing guide rails to connect the two force-bearing guide rails together, and a vertical scissor jack is provided between the connecting beam and the lower formwork.

[0011] Furthermore, the climbing guide rail is fixed on the cast pier body through a plurality of climbing cones pre-embedded in the cast pier body.

[0012] Furthermore, the casting formwork is connected to the upper force-bearing frame through a plurality of connectors. The upper force-bearing frame is a rectangular frame composed of a plurality of horizontally arranged second cross beams and vertically arranged second vertical beams. A transverse guide rail is provided on the first cross beam perpendicular to the pier at the top of the lower formwork. Correspondingly, a second guide rail groove matching the transverse guide rail is provided on the second cross beam at the bottom of the upper force-bearing frame. The second guide rail groove is clamped on the transverse guide rail, and an electric screw jack is provided on the top of the lower formwork. The electric screw jack is connected to the upper force-bearing frame to facilitate driving the upper force-bearing frame to move horizontally along the transverse guide rail.

[0013] Furthermore, the transverse guide rail is arranged on the first cross beam of the lower mold frame through a plurality of pads.

[0014] Furthermore, it also includes a temperature control unit, which includes a condenser, an air-cooled radiator, a water tank and a supercharger. There are multiple condensers and they are pre-buried in the pier body to be cast. The air-cooled radiator, water tank and supercharger are arranged on the lower mold frame. The water tank outlet is connected to the supercharger inlet, and the supercharger outlet is connected to one end of the condenser to introduce the cooling water in the water tank into the condenser. The other end of the condenser is connected to the inlet of the air-cooled radiator, and the air-cooled radiator outlet is connected to the water tank inlet.

[0015] Furthermore, wedge-shaped anti-slip teeth are provided on the leading guide rail and the force guide rail, and the locking mechanism includes a reset spring, a rotating rod and a wedge-shaped pin cooperating with the anti-slip teeth. The reset spring is horizontally arranged in the shell, one end of the wedge pin is connected to one end of the reset spring, and the other end of the wedge pin partially extends out of the shell and cooperates with the anti-slip teeth, one end of the rotating rod is connected to the other end of the reset spring, and the other end of the rotating rod partially extends out of the shell and is threadedly connected to the shell.

[0016] A pier climbing formwork construction method is constructed according to the pier climbing formwork construction structure described above, and specifically comprises the following steps: (1) Install two advance rails and two force rails on the cast pier body, and install the lower formwork on the two advance rails and the two force rails, and set locking mechanisms on the lower formwork corresponding to the two advance rails and the two force rails, and install vertical scissor jacks between the connecting beam and the lower formwork; (2) Install the upper formwork above the lower formwork, and then adjust the casting formwork by horizontally moving the upper formwork. After the casting formwork is adjusted into place, fix the casting formwork to the climbing cone pre-buried on the pier to be cast, and then pour concrete to complete the casting of the pier to be cast in the corresponding section of the casting formwork; (3) After pouring is completed, move the upper formwork horizontally so that the pouring formwork is away from the pier body, then remove the two advance rails from the pier body, release the locking mechanisms corresponding to the two advance rails, move the advance rails upward and fix them on the poured pier body, clamp the first rail groove of the lower formwork on the advance rail, open the corresponding locking mechanism and operate the vertical scissor jack to push the lower formwork to climb along the climbing rail. When climbing to the upper end of the force-bearing rail, release the locking mechanisms corresponding to the two force-bearing rails, remove the two force-bearing rails, operate the vertical scissor jack to pull back, and pull the force-bearing rail to climb upward along the first rail groove of the lower formwork. After the two force-bearing rails have climbed to their proper positions, open the corresponding locking mechanism. (4) Horizontally move the upper formwork to adjust the casting formwork. After the casting formwork is adjusted into place, fix the casting formwork to the climbing cone pre-buried on the pier to be cast, and then pour concrete to complete the casting of the pier to be cast in the corresponding section of the casting formwork; (5) Repeat steps (3) and (4) to complete the concrete pouring of the entire pier.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The climbing guide rail of the present invention is composed of two leading guide rails and two force-bearing guide rails, which are used in combination to ensure the stability and supporting force of the lower mold frame and the upper mold frame. At the same time, the alternating use and coordination of the two leading guide rails and the two force-bearing guide rails realizes the continuity and stability of the mold frame climbing, which not only improves the efficiency of the mold frame climbing, but also ensures the stability and safety of the climbing process.

[0018] 2. The wedge pin of the locking mechanism of the present invention corresponds to the wedge-shaped anti-skid teeth on the climbing guide rail. When the formwork frame climbs upward, the wedge-shaped anti-skid teeth squeeze the wedge pin to compress the reset spring. When the wedge pin slides into the next wedge-shaped anti-skid teeth, the reset spring rebounds and pushes the wedge pin back into the anti-skid teeth, thereby preventing the formwork frame from sliding downward. At the same time, the lock can be released by rotating the rotating rod, so that the wedge pin can be withdrawn from the anti-skid teeth, which is convenient for the installation and disassembly of the climbing guide rail. In this way, on the one hand, the risk of accidental slipping of the formwork frame during the climbing process can be effectively prevented, ensuring the safety and stability of the construction. On the other hand, the flexibility and ease of use of the locking mechanism are conducive to construction efficiency, making the installation and disassembly of the guide rail more convenient, thereby shortening the construction period and reducing construction costs.

[0019] 3. The air-cooled radiator, water tank and supercharger of the temperature control unit of the present invention are arranged on the lower formwork. During the construction process, they climb with the lower formwork, so that the concrete temperature can be controlled while the formwork is climbing to prevent cracks. At the same time, the cooling water enters the condenser tube for heat exchange and is cooled by the air-cooled radiator before returning to the water tank, thus realizing the internal circulation of cooling water and avoiding the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 -Schematic diagram of the structure of the present invention.

[0021] Figure 2 -Enlarged view of the locking mechanism.

[0022] Figure 3 -Schematic diagram of the structure after the leading guide rail moves up.

[0023] Among them: 1- cast pier body; 2- to be cast pier body; 3- lower formwork; 31- first horizontal beam; 32- first vertical beam; 33- first diagonal brace; 4- upper formwork; 41- second horizontal beam; 42- second vertical beam; 43- casting formwork; 44- second diagonal brace; 5- climbing guide rail; 51- leading guide rail; 52- force guide rail; 53- anti-skid teeth; 6- connecting beam; 7- vertical scissor jack; 8- electric screw jack; 9- pad; 10- locking mechanism; 10a- wedge pin; 10b- reset spring; 10c- rotating rod; 11- condenser; 12- supercharger; 13- air-cooled radiator; 14- water tank. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] See also Figure 1 , Figure 2 and Figure 3A pier climbing formwork construction structure includes a cast pier body 1, and climbing formwork units are respectively arranged around the cast pier body 1; the climbing formwork unit includes a climbing guide rail 5, a lower formwork 3 and an upper formwork 4, the climbing guide rail 5 is detachably arranged on the cast pier body 1, the lower formwork 3 is climbably arranged on the climbing guide rail 5, and a locking mechanism 10 corresponding to the climbing guide rail 5 is provided on the lower formwork 3 to prevent the lower formwork 3 from sliding down, and the upper formwork 4 is arranged above the lower formwork 3 and corresponds to the pier body 2 to be cast.

[0026] The upper formwork 4 includes a casting template 43 and an upper force-bearing frame. The casting template 43 is vertically arranged and detachably connected to the upper force-bearing frame. The upper formwork 4 can move horizontally in a direction perpendicular to the pier body to facilitate adjustment of the horizontal distance from the casting template 43 to the pier body.

[0027] In specific implementation, the lower template 3 is a rectangular frame composed of a plurality of horizontally arranged first cross beams 31 and vertically arranged first vertical beams 32. At the same time, a plurality of first diagonal braces 33 are also arranged in the rectangular frame to improve the structural strength and stability of the lower template.

[0028] In specific implementation, the climbing guide rail 5 includes two leading guide rails 51 and two force guide rails 52 vertically arranged on the cast pier body 1, the two leading guide rails 51 are arranged at intervals and located between the two force guide rails 52, and the lower ends of the two force guide rails 52 exceed the leading guide rails 51 by a certain length, and the first vertical beam 32 of the lower formwork corresponding to the two leading guide rails 51 and the two force guide rails 52 is provided with a first guide rail groove, and the first guide rail groove is clamped on the climbing guide rail, and the lower ends of the two force guide rails 52 are provided with a connecting beam 6 to connect the two force guide rails 52 together, and a vertical scissor jack 7 is provided between the connecting beam 6 and the lower formwork 3. The climbing guide rail 5 is fixed on the cast pier body 1 through a number of climbing cones pre-buried on the cast pier body.

[0029] In this way, the climbing guide rails are composed of two leading guide rails and two force guide rails. The two are used in conjunction to ensure the stability and support force of the lower and upper formwork frames. By fixing the leading guide rails and the force guide rails on the surface of the cast pier, the climbing of the formwork frame is effectively supported. During the climbing process of the formwork frame, the leading guide rail is first connected to the pre-buried climbing cone, and gradually rises as the formwork frame climbs, providing front support and guidance for the formwork frame. After the formwork frame climbs to the predetermined position, the force guide rail takes over the support task of the leading guide rail, continues to support the formwork frame and bears its weight.

[0030] In addition, the alternating use and coordination of the two leading rails and the two force rails achieves the continuity and stability of the formwork climbing. When the formwork needs to climb to a new height, the leading rail can be separated from the climbing cone of the current pier section by releasing the locking mechanism, and then installed on the embedded climbing cone of the pier section that has just been cast. Then, the vertical scissor jack is started to push the formwork to climb along the rail. When the formwork climbs to the highest support position that the leading rail can provide, the force rail takes over the support task and continues to push the formwork up. This alternating use and coordination method not only improves the efficiency of the formwork climbing, but also ensures the stability and safety of the climbing process.

[0031] In general, the coordinated use of two advance guide rails and two load-bearing guide rails effectively improves the stability and supporting force of the entire construction device, realizes the continuity and stability of the formwork climbing, and provides a guarantee for the pier climbing formwork construction.

[0032] During specific implementation, the casting formwork 43 is connected to the upper force-bearing frame through a number of connectors. The upper force-bearing frame is a rectangular frame composed of a number of horizontally arranged second cross beams 41 and vertically arranged second vertical beams 42, and a number of second diagonal braces 44 are provided on the rectangular frame. A transverse guide rail is provided on the first cross beam 31 perpendicular to the pier at the top of the lower formwork 3. Correspondingly, a second guide rail groove matching the transverse guide rail is provided on the second cross beam 41 at the bottom of the upper force-bearing frame, and the second guide rail groove is clamped on the transverse guide rail. An electric screw jack 8 is provided on the top of the lower formwork 3, and the electric screw jack 8 is connected to the upper force-bearing frame to facilitate driving the upper force-bearing frame to move horizontally along the transverse guide rail.

[0033] In specific implementation, the transverse guide rail is arranged on the first crossbeam 31 of the lower mold frame 3 through a plurality of pads 9. The pads are arranged in this way so that the upper mold frame has a certain height from the lower mold frame, thereby avoiding the collision between the casting template and the lower mold frame during the movement of the upper mold frame, and ensuring the smoothness of the horizontal movement of the casting template.

[0034] During specific implementation, it also includes a temperature control unit, which includes a condenser 11, an air-cooled radiator 13, a water tank 14 and a supercharger 12. There are multiple condensers 11 and they are pre-buried in the pier body 2 to be cast. The air-cooled radiator 13, the water tank 14 and the supercharger 12 are arranged on the lower mold frame 3. The outlet of the water tank 14 is connected to the inlet of the supercharger 12, and the outlet of the supercharger 12 is connected to one end of the condenser 11 to introduce the cooling water in the water tank 14 into the condenser 11. The other end of the condenser 11 is connected to the inlet of the air-cooled radiator 13, and the outlet of the air-cooled radiator 13 is connected to the inlet of the water tank 14.

[0035] The air-cooled radiator, water tank and booster of the temperature control unit are installed on the lower formwork. During the construction process, they climb with the lower formwork, so that the concrete temperature can be controlled during the climbing formwork construction to prevent cracks. At the same time, the cooling water enters the condenser tube for heat exchange and is cooled by the air-cooled radiator before returning to the water tank, realizing the internal circulation of cooling water and avoiding the waste of water resources.

[0036] In order to ensure the smooth passage of the condenser pipe, a through hole for the condenser pipe to pass through is provided on the casting template.

[0037] In specific implementation, wedge-shaped anti-slip teeth 53 are provided on the leading guide rail and the force guide rail; the locking mechanism includes a reset spring 10b, a rotating rod 10c and a wedge pin 10a cooperating with the anti-slip teeth 53, the reset spring 10b is horizontally arranged in the shell, one end of the wedge pin 10a is connected to one end of the reset spring 10b, and the other end of the wedge pin partially extends out of the shell and cooperates with the anti-slip teeth 53, one end of the rotating rod 10c is connected to the other end of the reset spring 10b, and the other end of the rotating rod 10c partially extends out of the shell and is threadedly connected to the shell.

[0038] Here, the wedge pin of the locking mechanism corresponds to the wedge-shaped anti-skid teeth on the climbing guide rail. When the formwork frame climbs upward, the wedge-shaped anti-skid teeth squeeze the wedge pin to compress the reset spring. When the wedge pin slides into the next wedge-shaped anti-skid tooth, the reset spring rebounds and pushes the wedge pin back into the anti-skid tooth, thereby preventing the formwork frame from sliding downward. At the same time, the lock can be released by rotating the rotating rod, so that the wedge pin can be withdrawn from the anti-skid tooth, which is convenient for the installation and disassembly of the climbing guide rail. In this way, on the one hand, the risk of accidental sliding of the formwork frame during the climbing process can be effectively prevented, ensuring the safety and stability of the construction. On the other hand, the flexibility and ease of use of the locking mechanism are conducive to construction efficiency, making the installation and disassembly of the guide rail more convenient, thereby shortening the construction period and reducing construction costs.

[0039] A pier climbing formwork construction method is constructed according to the pier climbing formwork construction structure described above, and specifically comprises the following steps: (1) Install two leading guide rails and two force guide rails on the cast pier body through the crawling cone, and install the lower formwork on the two leading guide rails and the two force guide rails, and set locking mechanisms on the lower formworks corresponding to the two leading guide rails and the two force guide rails, and install vertical scissor jacks between the connecting beam and the lower formwork; and pre-embed the condenser pipe on the pier body to be cast, and place the air-cooled radiator, water tank and supercharger on the lower formwork; (2) Install the upper formwork above the lower formwork, and then adjust the casting formwork by horizontally moving the upper formwork. After the casting formwork is adjusted in place, fix the casting formwork to the climbing cone pre-buried on the pier to be cast. Then use the connecting pipe to connect the two ends of the condenser pipe to the outlet of the supercharger and the inlet of the air-cooled radiator respectively, and then pour concrete to complete the casting of the pier to be cast in the corresponding section of the casting formwork; (3) After pouring is completed, remove the connecting pipes from both ends of the condenser pipe, move the upper formwork horizontally so that the pouring template is away from the pier body, then remove the two advance rails from the pier body, release the locking mechanisms corresponding to the two advance rails, move the advance rails upward and fix them on the poured pier body (part of the advance rails is moved upward so that the advance rails are fixed to the pier body that has just been poured and the pier body that has been poured previously), clamp the first rail groove of the lower formwork on the advance rail, open the corresponding locking mechanism and operate the vertical scissor jack to push the lower formwork to climb along the climbing rails (the two advance rails and the two force rails are stressed), and when climbing to the upper end of the force rails, release the locking mechanisms corresponding to the two force rails, remove the climbing cones at the two force rails, operate the vertical scissor jack to pull back, and pull the force rails to climb upward along the first rail groove of the lower formwork. After the two force rails have climbed to their proper positions, open the corresponding locking mechanisms; (4) Move the upper formwork horizontally to adjust the casting formwork. After the casting formwork is adjusted into place, fix the casting formwork to the climbing cone pre-buried in the pier to be cast. Then use the connecting pipe to connect the two ends of the condenser pipe pre-buried in the pier to be cast to the outlet of the supercharger and the inlet of the air-cooled radiator respectively. Then pour concrete to complete the casting of the corresponding section of the pier to be cast. (5) Repeat steps (3) and (4) to complete the concrete pouring of the entire pier.

[0040] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A pier climbing formwork construction structure, characterized in that: It comprises a cast pier body, and climbing formwork units are respectively arranged around the cast pier body; the climbing formwork units comprise a climbing guide rail, a lower formwork frame and an upper formwork frame, the climbing guide rail is detachably arranged on the cast pier body, the lower formwork frame is climbably arranged on the climbing guide rail, and a locking mechanism corresponding to the climbing guide rail is arranged on the lower formwork frame to prevent the lower formwork frame from sliding down, and the upper formwork frame is arranged above the lower formwork frame and corresponds to the pier body to be cast; The upper formwork comprises a casting template and an upper force-bearing frame. The casting template is vertically arranged and detachably connected to the upper force-bearing frame. The upper formwork can move horizontally in a direction perpendicular to the pier body, so as to adjust the horizontal distance from the casting template to the pier body.

2. A pier climbing formwork construction structure according to claim 1, characterized in that: The lower template is a rectangular frame composed of a plurality of horizontally arranged first cross beams and vertically arranged first vertical beams.

3. A pier climbing formwork construction structure according to claim 2, characterized in that: The climbing guide rail includes two leading guide rails and two force-bearing guide rails vertically arranged on the cast pier body, the two leading guide rails are arranged at intervals and located between the two force-bearing guide rails, and the lower ends of the two force-bearing guide rails exceed the leading guide rails by a certain length, and the first guide rail groove is provided on the first vertical beam of the lower formwork corresponding to the two leading guide rails and the two force-bearing guide rails, and the first guide rail groove is clamped on the climbing guide rail, and a connecting beam is provided at the lower ends of the two force-bearing guide rails to connect the two force-bearing guide rails together, and a vertical scissor jack is provided between the connecting beam and the lower formwork.

4. A pier climbing formwork construction structure according to claim 1, 2 or 3, characterized in that: The climbing guide rail is fixed on the cast pier body through a plurality of climbing cones pre-buried in the cast pier body.

5. The pier climbing formwork construction structure according to claim 2 is characterized in that: The casting formwork is connected to the upper force-bearing frame through a plurality of connectors. The upper force-bearing frame is a rectangular frame composed of a plurality of horizontally arranged second cross beams and vertically arranged second vertical beams. A transverse guide rail is provided on the first cross beam at the top of the lower formwork perpendicular to the pier. Correspondingly, a second guide rail groove matching the transverse guide rail is provided on the second cross beam at the bottom of the upper force-bearing frame. The second guide rail groove is clamped on the transverse guide rail, and an electric screw jack is provided on the top of the lower formwork. The electric screw jack is connected to the upper force-bearing frame to facilitate driving the upper force-bearing frame to move horizontally along the transverse guide rail.

6. A pier climbing formwork construction structure according to claim 5, characterized in that: The transverse guide rail is arranged on the first cross beam of the lower mold frame through a plurality of pads.

7. The pier climbing formwork construction structure according to claim 1 is characterized in that: It also includes a temperature control unit, which includes a condenser, an air-cooled radiator, a water tank and a supercharger. There are multiple condensers and they are pre-buried in the pier body to be cast. The air-cooled radiator, the water tank and the supercharger are arranged on the lower mold frame. The water tank outlet is connected to the supercharger inlet, and the supercharger outlet is connected to one end of the condenser to introduce the cooling water in the water tank into the condenser. The other end of the condenser is connected to the inlet of the air-cooled radiator, and the air-cooled radiator outlet is connected to the water tank inlet.

8. The pier climbing formwork construction structure according to claim 3 is characterized in that: The leading guide rail and the force guide rail are provided with wedge-shaped anti-slip teeth, and the locking mechanism includes a reset spring, a rotating rod and a wedge-shaped pin cooperating with the anti-slip teeth. The reset spring is horizontally arranged in the shell, one end of the wedge pin is connected to one end of the reset spring, and the other end of the wedge pin partially extends out of the shell and cooperates with the anti-slip teeth, one end of the rotating rod is connected to the other end of the reset spring, and the other end of the rotating rod partially extends out of the shell and is threadedly connected to the shell.

9. A pier climbing formwork construction method, characterized in that: The construction of a pier climbing formwork construction structure according to claim 3 specifically includes the following steps: (1) Install two advance rails and two force rails on the cast pier body, and install the lower formwork on the two advance rails and the two force rails, and set locking mechanisms on the lower formwork corresponding to the two advance rails and the two force rails, and install vertical scissor jacks between the connecting beam and the lower formwork; (2) Install the upper formwork above the lower formwork, and then adjust the casting formwork by horizontally moving the upper formwork. After the casting formwork is adjusted into place, fix the casting formwork to the climbing cone pre-buried on the pier to be cast, and then pour concrete to complete the casting of the pier to be cast in the corresponding section of the casting formwork; (3) After pouring is completed, move the upper formwork horizontally so that the pouring formwork is away from the pier body, then remove the two advance rails from the pier body, release the locking mechanisms corresponding to the two advance rails, move the advance rails upward and fix them on the poured pier body, clamp the first rail groove of the lower formwork on the advance rail, open the corresponding locking mechanism and operate the vertical scissor jack to push the lower formwork to climb along the climbing rail. When climbing to the upper end of the force-bearing rail, release the locking mechanisms corresponding to the two force-bearing rails, remove the two force-bearing rails, operate the vertical scissor jack to pull back, and pull the force-bearing rail to climb upward along the first rail groove of the lower formwork. After the two force-bearing rails have climbed to their proper positions, open the corresponding locking mechanism. (4) Horizontally move the upper formwork to adjust the casting formwork. After the casting formwork is adjusted into place, fix the casting formwork to the climbing cone pre-buried on the pier to be cast, and then pour concrete to complete the casting of the pier to be cast in the corresponding section of the casting formwork; (5) Repeat steps (3) and (4) to complete the concrete pouring of the entire pier.

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