Formwork support for super-high cylindrical pier construction

Abstract

A formwork support for super-high cylindrical pier construction, comprising: a support body (1) and a connecting support frame (2), the support body (1) is a square frame structure installed on the ground, a stepped ramp is installed inside the square frame structure; the connecting support frame (2) is connected and installed on the side of the support body (1), the other side of the connecting support frame (2) is connected and fixed with a super-high cylindrical pier formwork (3); the support body (1) and the connecting support frame (2) are installed in sections as the construction height of the super-high cylindrical pier increases, and a stable connecting unit and a formwork installation construction platform are added after the support body (1) is installed to a certain height. The present application has the advantages of simple structure, safe and stable strength, improved concrete construction efficiency of the super-high cylindrical pier, shortened construction period, reduced construction cost, greatly reduced safety risks of concrete pouring construction personnel and building structure of the super-high cylindrical pier, and improved concrete construction quality of the super-high cylindrical pier.

Description

Technical Field

[0001] This invention relates to the field of construction technology for ultra-high bridge piers, specifically to a formwork support for the construction of ultra-high cylindrical piers. Background Technology

[0002] With the vigorous development of national infrastructure, a large number of high-pier and even ultra-high-pier bridges have emerged. Due to the generally unique nature of the construction areas, they often face situations where existing roads or rivers intersect with them, limiting the construction site. As a result, bridges with high piers and large spans are becoming increasingly common. However, due to the inherent high protective measures and large elevation differences of ultra-high piers, as well as the limitations imposed by the complex surrounding terrain, the construction difficulty and requirements for ultra-high column piers with a height of around 50 meters are also becoming increasingly higher.

[0003] Currently, the existing concrete construction process for bridge piers consumes a significant amount of manpower, material resources, and financial resources, not only compromising construction schedule and safety. In existing technologies, for ease of pouring, ultra-high column piers often cannot be poured in one go, but typically require multiple segmented pours. During segmented pouring, the formwork for the upper column needs to be anchored to the already poured concrete column below, facilitating the pouring of the upper column and ultimately completing the ultra-high column pier. The main problems arising from this are poor reinforcement between the lower column and the upper formwork, complex structure and concrete pouring process, inconvenient operation, and a high risk of affecting pouring quality, thus posing significant safety hazards to the construction safety and stability of the structure. In addition, the formwork support system for ultra-high column piers mostly uses scaffolding and formwork support such as socket-type disc buckle, but there are problems such as a large number of rods required for erection, a large amount of turnover materials, a large overall workload, slow construction speed, long construction period, and high cost. Moreover, it requires professional trades to erect, and the technical requirements for erection personnel are high, resulting in poor work flexibility and great erection difficulty.

[0004] Therefore, how to select a more structurally reasonable and safe formwork support for the construction of ultra-high cylindrical piers, achieve the required standards for pouring quality and safety, ensure the construction period, and minimize construction costs are technical problems that urgently need to be solved during construction. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a formwork support for the construction of ultra-high cylindrical piers. This invention features a simple structure, stable strength, and can significantly improve the efficiency of concrete construction for ultra-high cylindrical piers, shorten the construction period, reduce construction costs, greatly reduce safety risks to construction workers and the building structure during concrete pouring, and improve the quality of concrete construction for ultra-high cylindrical piers.

[0006] To achieve the above objectives, the present invention provides a formwork support for the construction of ultra-high cylindrical piers, comprising: a support body and a connecting support frame. The support body is a square frame structure installed on the ground, and a stepped ramp is installed inside the square frame structure. The connecting support frame is connected and installed on the side of the support body, and the other side of the connecting support frame is connected and fixed to the ultra-high cylindrical pier formwork. The support body and the connecting support frame are installed in sections as the construction height of the ultra-high cylindrical pier increases. After the support body is installed to a certain height, a stable connection unit and a formwork installation platform are added.

[0007] Preferably, the support body and the connecting support frame are based on a base made of welded square tubing made of iron plate, and are installed on a 20-30cm thick C20 concrete foundation, and then the support body and the connecting support frame are fastened to the base.

[0008] In any of the above embodiments, it is preferred that the main body of the support frame and the connecting support frame are both truss structures composed of horizontal, vertical and diagonal reinforcing steel profiles, and the two are connected and fixed by steel pipe fittings and connecting locks, so that the connecting support frame is installed on the side of the main body of the support frame; multiple adjusting jacking brackets of different heights are installed on the truss structure end of the side of the connecting support frame that is connected and fixed to the ultra-high cylindrical pier template, and the external connection of multiple adjusting jacking brackets of the same height is fixed with a template fixing semi-circular steel hoop, and the inner surface of the template fixing semi-circular steel hoop is fastened to the outer surface of half of the ultra-high cylindrical pier template by bolts.

[0009] In any of the above embodiments, it is preferred that the connecting support frame is provided with a linkage device driven by a gear and rack, and the linkage device is controlled by the control unit to realize the linkage adjustment of multiple adjustment push-pull brackets between adjacent heights; and / or the linkage device is controlled by the control unit to disconnect, so as to realize the individual adjustment of multiple adjustment push-pull brackets at the same height.

[0010] In any of the above embodiments, it is preferred that the adjusting push bracket includes a bracket plate at the outermost end, one end of the bracket plate is provided with a lead screw, and the other end of the lead screw is provided with a movable lead screw seat installed on the side of the connecting support frame; the lead screw is provided with a limiting structure.

[0011] In any of the above embodiments, it is preferred that the adjusting push bracket is equipped with a pressure sensor to monitor the pressure exerted by the adjusting push bracket on the template fixing semi-circular steel hoop.

[0012] In any of the above embodiments, it is preferred that a fixing clamp is also installed on the side of the connecting support frame that is connected and fixed to the high cylindrical pier template. The fixing clamp is used to tighten and fix the two halves of the ultra-high cylindrical pier template after they are closed. The fixing clamp itself is connected and tightened by fastening bolts and nuts.

[0013] In any of the above schemes, it is preferred that after the main body of the support is installed to a height of 40m, an elevator is installed inside the square frame structure of the main body of the support to replace the steps and ramps; after the tie beam between the ultra-high cylindrical piers is poured, the steel frame foundation of the elevator and related supporting components are installed at the same time.

[0014] In any of the above solutions, it is preferred to also include a verticality sensor to monitor the installation accuracy of the ultra-high cylindrical pier formwork, so as to control the adjustment amount of the adjusting jacking bracket during the installation of the ultra-high cylindrical pier formwork.

[0015] In any of the above schemes, it is preferred that a stabilizing connection unit be added after the main body of the support is installed to a height of 6m. The stabilizing connection unit includes a connecting clamp and a connecting rod. The connecting rods are arranged at a height of 4m-6m and connect the main body of the support and the connecting clamp respectively. The connecting clamp is installed on the completed column pier and / or tie beam using a Φ48mm steel pipe swivel coupler with a wall thickness of 3.5mm.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The present invention has a simple structure and stable strength, which can greatly improve the concrete construction efficiency of ultra-high cylindrical piers, shorten the construction period, reduce construction costs, greatly reduce the safety risks of concrete pouring construction personnel and building structures of ultra-high cylindrical piers, and improve the concrete construction quality of ultra-high cylindrical piers.

[0018] 2. This invention cleverly combines the main body of the support frame and the connecting support frame, which greatly reduces the on-site construction procedures and site occupation, significantly improves construction efficiency and reduces construction costs.

[0019] 3. The template support of the present invention has low construction difficulty, small workload, fast installation progress, and saves construction time; the support system has clear overall force transmission and reasonable stress distribution, and fully meets the requirements of bearing capacity, stiffness and stability.

[0020] 4. The adjustable jacking bracket used in this invention facilitates the adjustment of the support force on the formwork. The combined use of the formwork fixing semi-circular steel hoop and fixing clamp simplifies the formwork erection and reinforcement procedure and ensures the construction effect. The linkage device can be reasonably used according to the actual construction conditions on site, which can conveniently and accurately ensure the adjustment effect of the jacking bracket, and improve the construction speed and efficiency. The application of pressure sensor and verticality sensor greatly improves the accuracy of formwork erection and improves the construction quality.

[0021] 5. The template support structure of the present invention is simple, easy to process and manufacture, and easy to obtain materials; the present invention can be applied to the construction process of columns such as cylinders, and has a wide range of applications. Attached Figure Description

[0022] Figure 1 This is an overall schematic diagram of the formwork support for the construction of ultra-high cylindrical piers according to the present invention;

[0023] Figure 2 A top view of the fixing clamps used in the formwork support for the construction of ultra-high cylindrical piers, in accordance with the present invention. Detailed Implementation

[0024] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. However, the following embodiments are only used to understand the present invention. The embodiments and features in the embodiments of this application can be combined with each other. This application can be implemented in a variety of different ways as defined and covered by the claims.

[0025] Example 1

[0026] See Figure 1-2 A formwork support for the construction of ultra-high cylindrical piers includes: a support body 1 and a connecting support frame 2. The support body 1 is a square frame structure installed on the ground, and the square frame structure has a stepped ramp installed inside. The connecting support frame 2 is connected and installed on the side of the support body 1, and the other side of the connecting support frame 2 is connected and fixed to the ultra-high cylindrical pier formwork 3. The support body 1 and the connecting support frame 2 are installed in sections as the construction height of the ultra-high cylindrical pier increases. After the support body 1 is installed to a certain height, a stable connection unit and a formwork installation platform are added.

[0027] The support body 1 and the connecting support frame 2 are based on a base made of square tubing welded from iron plates, and are installed on a 30cm thick C20 concrete foundation. The support body 1 and the connecting support frame 2 are then fastened to the base.

[0028] Both the main support body 1 and the connecting support frame 2 are truss structures composed of horizontal, vertical and diagonal reinforced steel profiles. They are connected and fixed by steel pipe fittings and connecting locks, so that the connecting support frame 2 is installed on the side of the main support body 1. Multiple adjusting jacking brackets 4 of different heights are installed on the end of the truss structure on the side where the connecting support frame 2 is connected and fixed to the ultra-high cylindrical pier template 3. Multiple adjusting jacking brackets 4 of the same height are externally connected and fixed with template fixing semi-circular steel hoops 5. The inner surface of the template fixing semi-circular steel hoop 5 is fastened to the outer surface of half of the ultra-high cylindrical pier template 3 by bolts.

[0029] The connecting support frame 2 is equipped with a linkage device driven by gears and racks. The linkage device can be controlled by the control unit to realize the linkage adjustment of multiple adjustment push-pull brackets 4 between adjacent heights; and / or the linkage device can be disconnected by the control unit to realize the individual adjustment of multiple adjustment push-pull brackets 4 at the same height.

[0030] The adjusting push bracket 4 includes a bracket plate at the outermost end, a lead screw at one end of the bracket plate, and a movable lead screw seat installed on the side of the connecting support frame 2 at the other end of the lead screw; a limiting structure is provided on the lead screw.

[0031] The adjusting push bracket 4 is equipped with a pressure sensor to monitor the pressure exerted by the adjusting push bracket 4 on the template fixing semi-circular steel hoop 5.

[0032] A fixing clamp 6 is also installed on the side of the connecting support frame 2 that is connected and fixed to the high cylindrical pier template 3. The fixing clamp 6 is used to tighten and fix the two halves of the ultra-high cylindrical pier template 3 after they are closed. The fixing clamp 6 itself is connected and tightened by fastening bolts and nuts.

[0033] After the main support 1 is installed to a height of 40m, an elevator is installed inside the square frame structure of the main support 1 to replace the steps and ramps; after the tie beam between the ultra-high cylindrical piers is poured, the steel frame foundation of the elevator and related supporting components are installed at the same time.

[0034] A verticality sensor is also provided to monitor the installation accuracy of the ultra-high cylindrical pier formwork 3, so as to control the adjustment amount of the adjusting jacking bracket 4 during the installation of the ultra-high cylindrical pier formwork 3.

[0035] After the main body of the support frame 1 is installed to a height of 6m, a stabilizing connection unit is added. The stabilizing connection unit includes a connecting clamp and a connecting rod. The connecting rods are arranged at a height of 4m intervals and connect the main body of the support frame 1 and the connecting clamp respectively. The connecting clamp is installed on the completed column pier and / or tie beam using a Φ48mm steel pipe swivel coupler with a wall thickness of 3.5mm.

[0036] Example 2

[0037] See Figure 1-2 See Figure 1-2 A formwork support for the construction of ultra-high cylindrical piers includes: a support body 1 and a connecting support frame 2. The support body 1 is a square frame structure installed on the ground, and the square frame structure has a stepped ramp installed inside. The connecting support frame 2 is connected and installed on the side of the support body 1, and the other side of the connecting support frame 2 is connected and fixed to the ultra-high cylindrical pier formwork 3. The support body 1 and the connecting support frame 2 are installed in sections as the construction height of the ultra-high cylindrical pier increases. After the support body 1 is installed to a certain height, a stable connection unit and a formwork installation platform are added.

[0038] The support body 1 and the connecting support frame 2 are based on a base made of welded square tubing made of iron plate, and are installed on a 20cm thick C20 concrete foundation. The support body 1 and the connecting support frame 2 are then fastened to the base.

[0039] Both the main support body 1 and the connecting support frame 2 are truss structures composed of horizontal, vertical and diagonal reinforced steel profiles. They are connected and fixed by steel pipe fittings and connecting locks, so that the connecting support frame 2 is installed on the side of the main support body 1. Multiple adjusting jacking brackets 4 of different heights are installed on the end of the truss structure on the side where the connecting support frame 2 is connected and fixed to the ultra-high cylindrical pier template 3. Multiple adjusting jacking brackets 4 of the same height are externally connected and fixed with template fixing semi-circular steel hoops 5. The inner surface of the template fixing semi-circular steel hoop 5 is fastened to the outer surface of half of the ultra-high cylindrical pier template 3 by bolts.

[0040] The connecting support frame 2 is equipped with a linkage device driven by gears and racks. The linkage device can be controlled by the control unit to realize the linkage adjustment of multiple adjustment push-pull brackets 4 between adjacent heights; and / or the linkage device can be disconnected by the control unit to realize the individual adjustment of multiple adjustment push-pull brackets 4 at the same height.

[0041] The adjusting push bracket 4 includes a bracket plate at the outermost end, a lead screw at one end of the bracket plate, and a movable lead screw seat installed on the side of the connecting support frame 2 at the other end of the lead screw; a limiting structure is provided on the lead screw.

[0042] The adjusting push bracket 4 is equipped with a pressure sensor to monitor the pressure exerted by the adjusting push bracket 4 on the template fixing semi-circular steel hoop 5.

[0043] A fixing clamp 6 is also installed on the side of the connecting support frame 2 that is connected and fixed to the high cylindrical pier template 3. The fixing clamp 6 is used to tighten and fix the two halves of the ultra-high cylindrical pier template 3 after they are closed. The fixing clamp 6 itself is connected and tightened by fastening bolts and nuts.

[0044] After the main support 1 is installed to a height of 40m, an elevator is installed inside the square frame structure of the main support 1 to replace the steps and ramps; after the tie beam between the ultra-high cylindrical piers is poured, the steel frame foundation of the elevator and related supporting components are installed at the same time.

[0045] A verticality sensor is also provided to monitor the installation accuracy of the ultra-high cylindrical pier formwork 3, so as to control the adjustment amount of the adjusting jacking bracket 4 during the installation of the ultra-high cylindrical pier formwork 3.

[0046] After the main body of the support frame 1 is installed to a height of 6m, a stabilizing connection unit is added. The stabilizing connection unit includes a connecting clamp and a connecting rod. The connecting rods are arranged at a height of 6m intervals and connect the main body of the support frame 1 and the connecting clamp respectively. The connecting clamp is installed on the completed column pier and / or tie beam using a Φ48mm steel pipe swivel coupler with a wall thickness of 3.5mm.

[0047] Furthermore, to further improve the technical effect of the present invention, in this embodiment, the linkage device includes an action component and a drive unit. The action component consists of two sets arranged adjacent to each other. Each set of transmission components includes multiple push rods and fasteners for fixing the multiple push rods. One end of each push rod is a fixed end for connecting to the connecting support frame 2, and the other end is connected to the adjusting push bracket 4. The drive unit includes a telescopic moving seat, a cycloidal gear, a rotating pivot for driving the cycloidal gear to rotate, and a power mechanism for driving the rotating pivot to rotate. The telescopic moving seat includes a top rack and a bottom rack arranged in parallel, and the top rack and the bottom rack are connected together by a connector. Multiple cycloidal gears are respectively disposed between the top and bottom racks of their corresponding telescopic moving seats. In any state, when one cycloidal gear is engaged with the top rack of its corresponding telescopic moving seat, another cycloidal gear is engaged with the bottom rack of its corresponding telescopic moving seat; when one cycloidal gear is engaged with the bottom rack of its corresponding telescopic moving seat, another cycloidal gear is engaged with the top rack of its corresponding telescopic moving seat. For any given cycloidal gear, it may not be engaged with both the top and bottom racks of its corresponding telescopic moving seat simultaneously. When linkage is not required, the top and bottom racks can be separated from the connecting parts, thus preventing linkage. This allows for manual adjustment of the adjusting push bracket 4 according to the actual situation of the supported template, enabling flexible control and adjustment of the template support.

[0048] The linkage device in this embodiment is easy to operate, convenient to control, and highly feasible. Because it is achieved by the meshing of the cycloidal gear with the top and bottom racks of the telescopic moving seat, simultaneous linkage adjustment of the jacking bracket when adjusting adjacent heights can be achieved, thus greatly improving construction efficiency.

[0049] Example 3

[0050] See Figure 1-2 See Figure 1-2 A formwork support for the construction of ultra-high cylindrical piers includes: a support body 1 and a connecting support frame 2. The support body 1 is a square frame structure installed on the ground, and the square frame structure has a stepped ramp installed inside. The connecting support frame 2 is connected and installed on the side of the support body 1, and the other side of the connecting support frame 2 is connected and fixed to the ultra-high cylindrical pier formwork 3. The support body 1 and the connecting support frame 2 are installed in sections as the construction height of the ultra-high cylindrical pier increases. After the support body 1 is installed to a certain height, a stable connection unit and a formwork installation platform are added.

[0051] The support body 1 and the connecting support frame 2 are based on a base made of square tubing welded from iron plates, and are installed on a 25cm thick C20 concrete foundation. The support body 1 and the connecting support frame 2 are then fastened to the base.

[0052] Both the main support body 1 and the connecting support frame 2 are truss structures composed of horizontal, vertical and diagonal reinforced steel profiles. They are connected and fixed by steel pipe fittings and connecting locks, so that the connecting support frame 2 is installed on the side of the main support body 1. Multiple adjusting jacking brackets 4 of different heights are installed on the end of the truss structure on the side where the connecting support frame 2 is connected and fixed to the ultra-high cylindrical pier template 3. Multiple adjusting jacking brackets 4 of the same height are externally connected and fixed with template fixing semi-circular steel hoops 5. The inner surface of the template fixing semi-circular steel hoop 5 is fastened to the outer surface of half of the ultra-high cylindrical pier template 3 by bolts.

[0053] The connecting support frame 2 is equipped with a linkage device driven by gears and racks. The linkage device can be controlled by the control unit to realize the linkage adjustment of multiple adjustment push-pull brackets 4 between adjacent heights; and / or the linkage device can be disconnected by the control unit to realize the individual adjustment of multiple adjustment push-pull brackets 4 at the same height.

[0054] The adjusting push bracket 4 includes a bracket plate at the outermost end, a lead screw at one end of the bracket plate, and a movable lead screw seat installed on the side of the connecting support frame 2 at the other end of the lead screw; a limiting structure is provided on the lead screw.

[0055] The adjusting jacking bracket 4 is equipped with a pressure sensor to monitor the pressure exerted by the adjusting jacking bracket 4 on the semi-circular steel hoop 5 fixing the template. The pressure value detected by the pressure sensor is checked, and only when the pressure value meets the standard can it be guaranteed that the support of the template is within a reasonable range.

[0056] A fixing clamp 6 is also installed on the side of the connecting support frame 2 that is connected and fixed to the high cylindrical pier template 3. The fixing clamp 6 is used to tighten and fix the two halves of the ultra-high cylindrical pier template 3 after they are closed. The fixing clamp 6 itself is connected and tightened by fastening bolts and nuts.

[0057] After the main support 1 is installed to a height of 40m, an elevator is installed inside the square frame structure of the main support 1 to replace the steps and ramps; after the tie beam between the ultra-high cylindrical piers is poured, the steel frame foundation of the elevator and related supporting components are installed at the same time.

[0058] A verticality sensor is also provided to monitor the installation accuracy of the ultra-high cylindrical pier formwork 3, so as to control the adjustment amount of the adjusting jacking bracket 4 during the installation of the ultra-high cylindrical pier formwork 3.

[0059] After the main body of the support frame 1 is installed to a height of 6m, a stabilizing connection unit is added. The stabilizing connection unit includes a connecting clamp and a connecting rod. The connecting rods are arranged at a height of 5m intervals and connect the main body of the support frame 1 and the connecting clamp respectively. The connecting clamp is installed on the completed column pier and / or tie beam using a Φ48mm steel pipe swivel coupler with a wall thickness of 3.5mm.

[0060] Furthermore, to further improve the technical effect of the present invention, in this embodiment, after the support body 1 is installed to a height of 40m, it is fixed at the four corners with four Φ13mm guy ropes, and reinforced with anchor brackets. The lower end of the guy rope is connected to the ground anchor, and the tension of the wire rope is adjusted using turnbuckles. The upper end is fixed to the positioning bar set 2 meters below the top surface of the support body 1. The ground anchor foundation is made of precast concrete blocks with a diameter of 1.5 meters and a height of 0.5 meters.

[0061] Anchor supports are installed on each side of the support body 1, which is not connected to the connecting support frame 2. Each side is diagonally braced. The top of the anchor support is welded to the support body 1, and the bottom is placed on the ground. The anchor support includes diagonal bracing rods. Vertical and horizontal rods are also present. Multiple sets of diagonal bracing rods are installed at different heights. The vertical rods connect diagonal bracing rods at adjacent heights, and the horizontal rods are positioned between adjacent diagonal bracing rods at the same height.

[0062] This invention utilizes a combination of guy ropes and anchor brackets to ensure the overall stability of the support structure, reduce its footprint, save on material and labor costs, and meet the required height-to-width ratio. This forms a stable support system, further ensuring the safety of the support structure during construction.

[0063] As can be seen from the above embodiments, the present invention has a simple structure and stable strength, which can greatly improve the concrete construction efficiency of ultra-high cylindrical piers, shorten the construction period, reduce construction costs, greatly reduce the safety risks of concrete pouring construction personnel and building structures of ultra-high cylindrical piers, and improve the concrete construction quality of ultra-high cylindrical piers.

[0064] This invention cleverly combines the main body of the support frame and the connecting support frame, which greatly reduces the on-site construction procedures and site occupation, significantly improves construction efficiency and reduces construction costs.

[0065] The template support of the present invention has low construction difficulty, small workload, fast installation progress, and saves construction time; the support system has clear overall force transmission and reasonable stress distribution, and fully meets the requirements of bearing capacity, stiffness and stability.

[0066] The adjustable jacking bracket used in this invention facilitates the adjustment of the support force on the formwork. The combined use of the formwork fixing semi-circular steel hoop and fixing clamp simplifies the formwork erection and reinforcement procedure and ensures the construction effect. The linkage device can be reasonably used according to the actual construction conditions on site to ensure the adjustment effect of the jacking bracket, thereby improving the construction speed and efficiency. The application of pressure sensors and verticality sensors greatly improves the accuracy of formwork erection and enhances the construction quality.

[0067] The template support structure of the present invention is simple, easy to process and manufacture, and easy to obtain materials; the present invention can be applied to the construction process of columns such as cylinders, and has a wide range of applications.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A formwork support for the construction of ultra-high cylindrical piers, characterized in that, include: The support body (1) and the connecting support frame (2) are provided. The support body (1) is a square frame structure and is installed on the ground. The square frame structure has a stepped ramp installed inside. The side of the support body (1) is connected to the connecting support frame (2), and the other side of the connecting support frame (2) is connected and fixed to the high cylindrical pier template (3). The support body (1) and the connecting support frame (2) are installed in sections as the construction height of the ultra-high cylindrical pier increases. After the support body (1) is installed to a certain height, a stable connection unit and a template installation platform are added. The support body (1) and the connecting support frame (2) are based on a base made of square tube welded from iron plate, and are installed on a 20-30cm thick C20 concrete foundation. The support body (1) and the connecting support frame (2) are then fastened on the base. The main body (1) and the connecting support frame (2) are both truss structures composed of horizontal, vertical and diagonal reinforced steel profiles. They are connected and fixed by steel pipe fittings and connecting locks, so that the connecting support frame (2) is installed on the side of the main body (1). Multiple adjustable jacking brackets (4) of different heights are installed on the end of the truss structure on the side where the connecting support frame (2) is connected and fixed to the ultra-high cylindrical pier template (3). Multiple adjustable jacking brackets (4) of the same height are externally connected and fixed with template fixing semi-circular steel hoops (5). The inner surface of the template fixing semi-circular steel hoop (5) is fastened to the outer surface of half of the ultra-high cylindrical pier template (3) by bolts.

2. The formwork support for the construction of ultra-high cylindrical piers according to claim 1, characterized in that, The connecting support frame (2) is equipped with a linkage device driven by gears and racks. The linkage device is controlled by the control unit to realize the linkage adjustment of multiple adjustment push-pull brackets (4) between adjacent heights; and / or the linkage device is disconnected by the control unit to realize the individual adjustment of multiple adjustment push-pull brackets (4) at the same height.

3. The formwork support for the construction of ultra-high cylindrical piers according to claim 2, characterized in that, The adjusting push bracket (4) includes a bracket plate at the outermost end, one end of which is provided with a lead screw, and the other end of which is provided with a movable lead screw seat installed on the side of the connecting support frame (2); the lead screw is provided with a limiting structure.

4. The formwork support for the construction of ultra-high cylindrical piers according to claim 2 or 3, characterized in that, The adjusting push bracket (4) is equipped with a pressure sensor to monitor the pressure exerted by the adjusting push bracket (4) on the template fixing semi-circular steel hoop (5).

5. The formwork support for the construction of ultra-high cylindrical piers according to claim 4, characterized in that, A fixing clamp (6) is also installed on the side of the connecting support frame (2) that is connected and fixed to the high cylindrical pier template (3). The fixing clamp (6) is used to tighten and fix the two half templates of the ultra-high cylindrical pier template (3) after they are closed. The fixing clamp (6) itself is connected and tightened by fastening bolts and nuts.

6. The formwork support for the construction of ultra-high cylindrical piers according to claim 5, characterized in that, After the support body (1) is installed to a height of 40m, an elevator is installed inside the square frame structure of the support body (1) to replace the steps and ramps; after the tie beam between the ultra-high cylindrical piers is poured, the steel frame foundation of the elevator and related supporting components are installed at the same time.

7. The formwork support for the construction of ultra-high cylindrical piers according to claim 6, characterized in that, A verticality sensor is also provided to monitor the installation accuracy of the ultra-high cylindrical pier formwork (3) so as to control the adjustment amount of the adjusting jacking bracket (4) during the installation of the ultra-high cylindrical pier formwork (3).

8. The formwork support for the construction of ultra-high cylindrical piers according to claim 6 or 7, characterized in that, After the main body of the support (1) is installed to a height of 6m, a stable connection unit is added. The stable connection unit includes a connecting clamp and a connecting rod. The connecting rods are arranged at a height of 4m-6m and connect the main body of the support (1) and the connecting clamp respectively. The connecting clamp is set on the column pier and / or tie beam with a steel pipe swivel fastener with a wall thickness of 3.5mm and a diameter of Φ48mm.

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