A formwork for pouring bridge piers

Abstract

The present invention provides a formwork for casting bridge piers, comprising two or more formwork blades and multiple sets of formwork blade connection and locking devices for connecting the formwork blades. The connection points of the formwork blades are provided with tabs each having a tapered hole. The formwork blade connection and locking devices include a connecting cylinder and a tapered pin connected to the connecting cylinder. Driven by the connecting cylinder, the taper pin can be inserted into or out of the tapered holes of the tabs at the connection points between adjacent formwork blades. The tapered pin cooperates with the tapered holes of the tabs to lock or release adjacent formwork blades. The formwork of the present invention is compact, evenly stressed, safe and reliable, easy to operate, and highly efficient, and can be used to achieve automated casting of bridge piers.

Description

Technical Field

[0001] The invention relates to the technical field of building bridge construction, in particular to a template for pouring bridge piers used in the construction of cylindrical pier type bridges. Background Art

[0002] my country's highway, railway and municipal construction are developing rapidly. Most of these construction projects involve bridge construction, and an important part of bridge construction is pouring concrete piers.

[0003] The traditional method of casting cement pier columns is to use two semicircular templates that are fastened together by bolts. The template for casting cement pier columns is formed by connecting two template blocks with bolts. When using this template for construction, an operating platform needs to be built and workers need to work at high altitude to disassemble and install the template connection bolts, which poses a safety hazard and has low work efficiency.

[0004] In recent years, the three-leaf pin hinged bridge pier climbing formwork technology has emerged, and its formwork part is as follows: Figure 1 As shown, this formwork consists of a three-leaf formwork block 01, two fixed hinge pins 02, a movable hinge pin 03, and a power cylinder 04. The two fixed hinge pins 02 are cylindrical pins, and the movable hinge pin 03 is a full-length tapered pin. This three-leaf hinged bridge pier formwork enables automated bridge pier construction under certain circumstances, improving construction efficiency. However, since it adopts the combination of two fixed pin hinge shafts, a movable pin hinge shaft and a power cylinder, especially the movable pin hinge shaft is a full-length tapered pin shaft, during actual use, when the template is slightly deformed, since the two fixed pin hinge shafts are long and the gap between them and the template ear plates is small, it will be difficult for the template to rotate around the fixed pin hinge shaft; in addition, the movable pin hinge shaft is a full-length tapered pin, that is, it adopts a long pin shaft with multiple tapered pin sections, and multiple ear plates between the templates are tightened by multiple tapered pin sections. Due to machining errors or template deformation, this solution will not be able to ensure that each ear plate is uniformly stressed, and the template will not be able to be sealed tightly at the ear plate with less stress, and even cause serious problems of cement slurry leakage. Summary of the Invention

[0005] In order to solve the problems in the prior art, the present invention provides a template for casting bridge piers, which has a compact structure, uniform force, safety and reliability, is easy to operate, has high construction efficiency, and can be easily locked or loosened.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a formwork for casting bridge piers comprises two or more formwork blades and multiple sets of formwork blade connecting and locking devices for connecting the formwork blades; the connection of the formwork blades is provided with ears, and the ears are provided with tapered holes; the formwork blade connecting and locking devices comprise a connecting cylinder and a tapered pin connected to the connecting cylinder; the tapered pin can be inserted into or out of the tapered holes of the ears at the connection between the corresponding adjacent formwork blades and the formwork blades under the drive of the connecting cylinder, and the adjacent formwork blades can be locked or loosened by the cooperation of the tapered pin and the tapered holes of the ears.

[0007] The present invention adopts multiple sets of template blade connection locking devices to lock or loosen the connection between template blades. Each cone pin is driven by an independent connecting oil cylinder, which avoids the problem of a small gap between the template and the cement column after opening due to a single cone pin shaft, and the difficulty of rotating around the non-cone pin shaft after the template is deformed, so that when the template of the present invention is used for construction, the construction is flexible and efficient. The problem of the template blade getting stuck when it is necessary to detach from the template is avoided. In addition, each locking connection is locked by an independent cone pin, which avoids the problem that when a long cone pin is locked through different locking nodes, if there is a processing error, the local node template will not be locked tightly, causing leakage of slurry. The present invention adopts each cone pin to independently and synchronously lock the template connection point, so that each template blade can be tightly combined and there will be no leakage of slurry during the construction process. The use of multiple independent cone pins for locking requires lower processing precision, and the processing cost is also lower than that of a whole long cone pin.

[0008] The preferred technical solution is that the cylinder body end of the connecting cylinder is connected to a tapered pin, and the piston rod end of the connecting cylinder is also connected to a tapered pin; the connecting cylinder is extended and retracted, respectively driving the tapered pin at the cylinder body end and the tapered pin at the piston end to insert into or disengage from the tapered holes of the ear pieces at the connection between the corresponding adjacent template blades and the template blades, and the adjacent template blades are locked or loosened through the cooperation of the tapered pin and the tapered holes of the ear pieces.

[0009] Tapered pins are connected to the cylinder body and piston rod ends of the connecting cylinder. Driven by the connecting cylinder, these pins, driven by the action and reaction forces, push the tabs on the template blades together, thereby locking the adjacent template blades together. The taper pins at both ends of the connecting cylinder exert the same tightening force, evenly applying force to the tabs and achieving a good sealing effect.

[0010] A preferred technical solution is that the connection between the template blades is also provided with an outward-turned connecting plate; a spring assembly is provided between the connecting plates of adjacent template blades and the template blades; the spring assembly includes a spring shaft, and a spring sleeved on the spring shaft; the spring shaft is fixed between the connecting plates of adjacent template blades and the template blades; when the connecting cylinder drives the tapered pin to disengage from the tapered hole of the ear piece corresponding to the connection between adjacent template blades and the template blades, the spring pushes the connecting plates between the adjacent template blades and the template blades, loosening the adjacent template blades connected to each other.

[0011] When the connecting cylinder retracts and the taper pin retracts, the spring assembly pushes the connecting plate between two adjacent formwork blades, widening the gap between them. This facilitates the entire formwork's detachment from the bridge pier being constructed, facilitating flexible movement and facilitating quick and easy construction. The spring in this spring assembly can be a compression spring or other conventional spring-like elastic element.

[0012] According to a preferred technical solution, the tip of the tapered pin is provided with a baffle for limiting the axial displacement distance of the tapered pin.

[0013] The baffle is detachably mounted on the tip of the tapered pin to limit the axial movement of the tapered pin, preventing it from completely disengaging from the tapered hole. This facilitates the re-locking of the tapered pin with the tapered hole under the drive of the connecting cylinder, thus preventing the tapered pin from being unable to accurately align with the tapered hole when it needs to be re-locked in the event of complete disengagement.

[0014] According to a preferred technical solution, the connecting cylinder is installed with a limit block, and a rectangular limit groove for guidance is provided at a corresponding position of the connecting plate; during the telescopic movement of the connecting cylinder, the limit block of the connecting cylinder slides along the rectangular limit groove on the corresponding connecting plate.

[0015] By installing a strip-shaped stopper on the connecting cylinder and allowing it to slide within the rectangular stopper groove of the connecting plate, the connecting cylinder is limited and guided. This allows the connecting cylinder and the taper pin to move only in the axial direction, minimizing deflection. This makes tightening and loosening the template blades more comfortable and flexible.

[0016] According to a preferred technical solution, the tapered pin is connected to the connecting cylinder via a pin shaft.

[0017] According to a preferred technical solution, a joint bearing is provided at the connection between the connecting oil cylinder and the tapered pin; the pin passes through the joint bearing to connect the tapered pin to the connecting oil cylinder.

[0018] The use of a joint bearing and a pin to connect the taper pin and the connecting cylinder facilitates a more flexible fit between the taper pin and the cylinder, preventing jamming and inability to drive due to machining errors or other factors in on-site construction. It also allows the template blade to rotate flexibly around the taper pin.

[0019] In a preferred technical solution, the taper angle of the tapered pin is less than or equal to 20 degrees, and the taper angle of the tapered hole is less than or equal to 20 degrees. The tapered pin with this taper angle cooperates with the tapered hole to achieve self-locking of the template blades. Once the template blades are locked, even if the connecting cylinder loses hydraulic power in some cases, the template blades will self-lock, preventing slurry leakage during construction.

[0020] In a preferred technical solution, the template blade is provided with a skeleton for enhancing the rigidity of the template blade, which is beneficial to enhancing the strength and rigidity of the template blade.

[0021] In a preferred technical solution, the formwork blades are arc-shaped, and the formwork used for casting bridge piers is composed of three arc-shaped formwork blades connected to form a cylindrical formwork. The upper and lower ends of the formwork blades may also be provided with outwardly tilted connecting pieces with connecting bolt holes, allowing the formwork formed by the formwork blades to be extended unlimitedly in the axial direction.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This invention uses a connecting cylinder to drive a tapered pin to tighten and loosen the formwork blades. The connecting cylinder can be remotely hydraulically controlled, thus resolving the problem of traditional two-blade bolted formwork requiring workers to work at height to remove and install bolts. The formwork can now be opened and closed simply by remotely controlling the extension and retraction of the cylinder. This formwork can be used to automate the pouring of bridge piers.

[0024] 2. The present invention adopts multiple sets of independent connection cylinders to drive independent cone pins to lock and loosen the template blades, which solves the problems of small gap between the template and the cement column after opening due to a single cone pin shaft, and difficulty in rotating the template around the non-cone pin shaft after deformation.

[0025] 3. This invention uses multiple sets of independently connected cylinders to drive independent taper pins to lock and release the template blades. Each template blade's locking node is independently and evenly stressed, resulting in a good sealing effect. This solves the problem of a single cylinder controlling a long pin shaft with multiple taper pins, resulting in uneven force at each taper pin node. This also avoids the serious problem of template failure to seal cement slurry at the taper pin nodes with less force due to uneven force, resulting in leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a schematic diagram of a formwork used for casting bridge piers in the prior art.

[0027] Figure 2 This is a schematic diagram of the overall assembly of a formwork for casting bridge piers according to the present invention.

[0028] Figure 3 The figure is a top view of a template for casting bridge piers according to the present invention.

[0029] Figure 4 The figure is a schematic diagram of the explosion structure of the formwork used for casting bridge piers according to the present invention.

[0030] Figure 5 It is a schematic cross-sectional view of the connection between the template blades of the present invention.

[0031] Figure 6 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0032] Figure 7 It is a cross-sectional schematic diagram of the template blade connection locking device of the present invention.

[0033] Figure 8 for Figure 7 Enlarged schematic diagram of part B in the middle.

[0034] The following are marked in the figure:

[0035] 01-template block; 02-fixed pin hinge shaft; 03-movable pin hinge shaft; 04-power cylinder; 1-template blade; 2-connecting cylinder; 3-taper pin; 4-spring; 5-pin shaft; 6-limit block; 7-connecting plate; 8-rectangular limit slot; 9-single ear plate; 10-double ear plate; 11-tapered hole; 12-skeleton; 13-spring shaft; 14-baffle; 15-spherical bearing. DETAILED DESCRIPTION

[0036] Reference Figures 2 to 8 An embodiment of a formwork for casting bridge piers of the present invention is further described.

[0037] A formwork for casting bridge piers is composed of three or more formwork blades 1 forming a cylindrical or other shaped single section (connection holes are provided at the upper and lower ends of the single section, allowing unlimited connection and extension in the axial direction). The connection between the formwork blades 1 is hinged using tapered pins 3 pushed by the connecting oil cylinders 2 of the formwork blade locking device. The cylinder end and piston rod end of each connecting oil cylinder 2 respectively push a tapered pin 3. Each tapered pin 3 cooperates with a single ear plate 9 and a double ear plate 10 on a group of adjacent formwork blades 1 to tapered the two formwork blades 1 under the thrust of the connecting oil cylinder 2, thereby achieving the effect of locking the two adjacent formwork blades 1. Depending on the length of the formwork blades 1, two or more groups of connecting oil cylinders 2 can be set on each connection axis to meet the need for sealing the formwork blades 1.

[0038] The conical pin 3 and the connecting cylinder 2 are connected by a pin shaft 5. A conical hole 11 is opened on the single-ear plate 9 and the double-ear plate 10 for cooperating with the conical pin 3. A skeleton 12 is provided on the template blade 1 to enhance the rigidity of the template blade. The skeleton 12 can be made of channel steel.

[0039] The connection between the formwork blades 1 is axially provided with connecting plates 7. A spring assembly is sandwiched between the connecting plates 7 of the formwork blades 1. This spring assembly includes a spring 4 and a spring shaft 13 that passes through the spring 4 and is mounted between the connecting plates 7 of two adjacent formwork blades 1 via a nut. The spring 4 of the spring assembly is designed to push the previously connected two adjacent formwork blades 1 apart when the connecting cylinder 2 contracts and pulls the taper pin 3 to create a gap between the single-ear plate 9 and the double-ear plate 10. This creates a gap between the two adjacent formwork blades 1, as well as between the formwork blades 1 and the concrete columns of the bridge piers to be cast, thereby ensuring that the formwork blades 1 can slide up and down along the concrete columns.

[0040] The two mutually connected template blades 1 are rotatably connected at the axial connection using a tapered pin 3: when the connecting cylinder 2 contracts and drives the tapered pin 3 out of the tapered hole 11, a gap will appear between each tapered pin 3 and the single-ear plate 9 and the double-ear plate 10, which is conducive to the rotation of the template blade 1 around the tapered pin 3, so that a gap will appear between the template blades 1;

[0041] The extension and retraction of the connecting cylinder 2 can be controlled by remote hydraulic control to control the opening and closing of the template blades 1. That is, the connecting cylinder 2 pushes the cone pin 3, pulling the corresponding adjacent single-ear plate 9 and double-ear plate 10, and drawing the two adjacent template blades 1 together to seal the cement slurry of the bridge pier to be cast, thus achieving the locking of the template blades 1. When the corresponding section of the bridge pier is cast, it is necessary to loosen the template blades 1 to allow the template blades 1 to separate from the bridge pier to be cast. The connecting cylinder 2 pulls the corresponding cone pin 3 out of the corresponding conical hole 11 (generally, it does not completely separate from the conical hole 11. Generally, it is loosened until the corresponding adjacent template blades 1 have enough clearance under the action of the spring assembly to achieve flexible axial movement along the bridge pier). The adjacent template blades 1 are stretched open by the spring 4 of the spring assembly, thereby achieving the opening of the template blades 1. This achieves the purpose of remotely controlling the opening and closing of the template blades 1 of the present invention.

[0042] An even number of single-ear plates 9 and even number of double-ear plates 10 can be arranged on the connecting axis of the template blade 1. Each cylinder body end and piston rod end of each connecting oil cylinder 2 are respectively connected to a taper pin 3 via a pin 5. Each taper pin 3 is used to control the locking or loosening of a group of single-ear plates 9 and double-ear plates 10. Based on the relationship between the action force and the reaction force, the taper pins 3 at both ends of each connecting oil cylinder 2 must exert equal taper force on the tapered hole 11. Therefore, the present invention can ensure that two adjacent groups of mating single-ear plates 9 and double-ear plates 10 can withstand equal taper force. The present invention uses a pair of mating single-ear plates 9 and double-ear plates 10 here, but other embodiments can also use corresponding single-ear plates 9 for mating, or other similar structures. As long as the taper pin 3 and the tapered hole 11 are similarly mated, it will suffice.

[0043] Multiple spring assemblies can be set on each connecting axis of the template blade 1 for opening the template blade 1. When the connecting cylinder 2 contracts and drives the tapered pin 3 out of the tapered hole 11, a gap appears between the tapered pin 3 and the single-ear plate 9 and the double-ear plate 10. At this time, the spring 4 of the spring assembly pushes the two adjacent connected template blades 1 to open and detach from the cement pier surface of the pier to be cast, and the spring 4 performs elastic telescopic movement along the axis of the spring shaft 13.

[0044] In this embodiment, the taper angle between the tapered pin 3 and the tapered hole 11 is less than or equal to 20 degrees. When the connecting cylinder 2 pushes the tapered pin 3 to tighten the template blades 1, even if the corresponding connecting cylinder 2 loses hydraulic power at this time, the tapered angle between the tapered pin 3 and the tapered hole 11 is very small, so the adjacent template blades 1 can be self-locked, and the phenomenon of gaps between the template blades 1 opening due to the loss of hydraulic power will not occur.

[0045] A strip-shaped limit block 6 is provided on the connecting cylinder 2, and a rectangular limit groove 8 is provided at the corresponding position of the connecting plate 7. The connecting plate 7 is welded to the template blade 1. The function of the strip-shaped limit block 6 and the rectangular limit groove is to limit the freedom of the corresponding connecting cylinder 2 so that the connecting cylinder 2 cannot rotate arbitrarily, and allows the connecting cylinder 2 to perform telescopic movement only in the axial direction of the connection of the template ear piece 1 as much as possible.

[0046] A baffle 14 is provided at the tip of the tapered pin 3 to limit the axial displacement of the tapered pin 3 and prevent the tapered pin 3 from completely falling out of the tapered hole 11. The provision of the baffle 14 facilitates the next connection of the oil cylinder 2 to drive the tapered pin 3 to accurately insert into the corresponding tapered hole 11 for extension.

[0047] Joint bearings 15 are provided at the connection points between the two ends of the connecting cylinder 2 and the tapered pin 3. The pins 5 are passed through the corresponding joint bearings 15 to connect the corresponding connecting cylinder 2 with the corresponding tapered pin 3. The provision of the joint bearings 15 helps the tapered pin 3 to adapt to the position of the single-ear plate 9 and the double-ear plate 10 and rotate freely to a certain extent.

[0048] The present invention uses multiple sets of template blade connection locking devices to lock or loosen the connection between template blades 1 and template blades 1. Each cone pin 3 is driven by an independent connecting oil cylinder 2, which avoids the problem of a small gap between the template and the cement column after opening due to the use of a single cone pin shaft, and the difficulty of rotating around the non-cone pin shaft after the template is deformed, so that when the template of the present invention is used for construction, the construction is flexible and efficient. The problem of the template blade getting stuck when it is necessary to detach from the template is avoided. In addition, each locking connection is locked by an independent cone pin 3, which avoids the problem that when a long cone pin is locked through different locking nodes, if there is a processing error, the local node template will not be locked tightly, causing leakage of slurry. The present invention uses each cone pin 3 to independently and synchronously lock the template connection point, so that each template blade 1 can be tightly connected and there will be no leakage of slurry during construction. Compared with a full-length cone pin shaft, the use of multiple independent cone pins 3 for locking reduces the requirements for processing accuracy, and the processing cost is also lower than that of a whole long cone pin.

[0049] Tapered pins 3 are connected to the cylinder body and piston rod ends of the connecting cylinder 2. Driven by the connecting cylinder 2, the taper pins 3 at both ends, driven by the action and reaction forces, drive the tabs (in this embodiment, the corresponding single-ear plate 9 and double-ear plate 10; i.e., the tabs are a general term for the single-ear plate 9 and double-ear plate 10) on the template blades 1 to tighten against each other, thereby driving the adjacent template blades 1 to fit and lock together. The taper pins 3 at both ends of the connecting cylinder 2 have the same tightening force, the tabs are evenly stressed, and the sealing effect is good.

[0050] When the connecting cylinder 2 retracts and the taper pin 3 retracts, the spring assembly pushes the connecting plate 7 between two adjacent formwork blades 1, widening the gap between them. This facilitates the entire formwork's detachment from the bridge pier being constructed, facilitating flexible movement and facilitating quick and easy construction. The spring 4 of this spring assembly can be a compression spring or other conventional spring-like elastic element.

[0051] A baffle 14 is installed at the tip of each tapered pin 3 to limit the axial movement of the tapered pin 3, preventing the tapered pin 3 from completely disengaging from the tapered hole 11 formed by the single-ear plate 9 and the double-ear plate 10. This facilitates the tapered pin 3 to be re-locked and aligned with the tapered hole 11 under the drive of the connecting cylinder 2. This prevents the tapered pin 3 from being unable to accurately align with the tapered hole 11 when the tapered hole 11 needs to be re-locked in the event of complete disengagement.

[0052] By installing a strip-shaped stopper 6 on the connecting cylinder 2 and allowing it to slide within a rectangular stopper slot 8 on the connecting plate 7, the connecting cylinder 2 is limited and guided. This allows both the connecting cylinder 2 and the taper pin 3 to move only in the axial direction, minimizing deflection. This makes tightening and loosening the template blades 1 easier and more flexible.

[0053] The use of the joint bearing 15 and the pin 5 to connect the taper pin 3 and the connecting cylinder 2 facilitates a more flexible fit between the taper pin 3 and the connecting cylinder 2, preventing the occurrence of jamming and inability to drive due to machining errors or other factors in on-site construction. It also facilitates the flexible rotation of the template blade 1 around the corresponding taper pin 3.

[0054] The taper angle of the taper pin 3 is less than or equal to 20 degrees, and the taper angle of the tapered hole 11 corresponding to the taper pin 3 is also less than or equal to 20 degrees. The taper pin 3 with this taper angle cooperates with the tapered hole 11 to achieve self-locking of the template blades 1. Once the template blades 1 are locked together, even if the connecting cylinder 2 loses hydraulic power in some cases, the template blades 1 will self-lock, preventing slurry leakage during construction.

[0055] The upper and lower ends of the template blade 1 can also be provided with outward-turned connecting pieces, which are provided with connecting bolt holes, so that the template composed of the template blades can be extended unlimitedly in the axial direction.

[0056] This embodiment uses a three-leaf, tapered pin-jointed automated formwork, but the present invention is not limited to three-leaf formwork; it can also have two, four, or even more leaves. This embodiment is based on cylindrical concrete piers, but the present invention can also be used to construct square and oval concrete piers.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A formwork for casting bridge piers, characterized by: The invention comprises two or more template blades and multiple sets of template blade connection and locking devices for connecting the template blades; the connection of the template blades is provided with an ear piece, and the ear piece has a tapered hole; the template blade connection and locking device comprises a connecting oil cylinder and a tapered pin connected to the connecting oil cylinder; the tapered pin can be inserted into or out of the tapered hole of the ear piece at the connection between the adjacent template blades under the drive of the connecting oil cylinder, and the adjacent template blades are locked or loosened by the cooperation between the tapered pin and the tapered hole of the ear piece; The cylinder end of the connecting oil cylinder is connected to a tapered pin, and the piston rod end of the connecting oil cylinder is also connected to a tapered pin; the connecting oil cylinder is extended and retracted, respectively driving the tapered pin at the cylinder end and the tapered pin at the piston end to be inserted into or out of the tapered holes of the ear pieces at the connection between the corresponding adjacent template blades, and the adjacent template blades are locked or loosened through the cooperation between the tapered pin and the tapered holes of the ear pieces; The connection between the template blades is also provided with an outward-turned connecting plate; a spring assembly is provided between the connecting plates of adjacent template blades and the template blades; the spring assembly includes a spring shaft and a spring sleeved on the spring shaft; the spring shaft is fixed between the connecting plates of adjacent template blades and the template blades; when the connecting cylinder drives the tapered pin to disengage from the tapered hole of the ear piece corresponding to the connection between the adjacent template blades and the template blades, the spring pushes the connecting plates between the adjacent template blades and the template blades, loosening the adjacent template blades connected to each other.

2. A formwork for casting bridge piers according to claim 1, characterized in that: The tip of the cone pin is provided with a baffle for limiting the axial displacement distance of the cone pin.

3. A formwork for casting bridge piers according to claim 2, characterized in that: The connecting oil cylinder is installed with a limit block, and the corresponding position of the connecting plate is provided with a rectangular limit groove for guidance; during the telescopic movement of the connecting oil cylinder, the limit block of the connecting oil cylinder slides along the rectangular limit groove on the corresponding connecting plate.

4. The formwork for casting bridge piers according to claim 1, characterized in that: The tapered pin is connected to the connecting oil cylinder through a pin shaft.

5. A formwork for casting bridge piers according to claim 4, characterized in that: A joint bearing is provided at the connection between the connecting oil cylinder and the tapered pin; the pin shaft passes through the joint bearing to connect the tapered pin to the connecting oil cylinder.

6. The formwork for casting bridge piers according to claim 1, characterized in that: The taper of the tapered pin is less than or equal to twenty degrees, and the taper of the tapered hole is less than or equal to twenty degrees.

7. The formwork for casting bridge piers according to claim 1, characterized in that: The template blade is provided with a skeleton for enhancing the rigidity of the template blade.

8. The formwork for casting bridge piers according to claim 1, characterized in that: The template blades are arc-shaped; and the template used for casting bridge piers is composed of three arc-shaped template blades connected to form a cylindrical template.

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