Bridge high pier construction system and method based on multistage hydraulic synchronous creeping formwork

Abstract

The invention relates to the technical field of bridge high pier construction, in particular to a bridge high pier construction system and method based on multistage hydraulic synchronous climbing formworks. The system comprises a formwork unit, a support unit and a hydraulic driving unit, and overall synchronous climbing of the formwork unit and the support unit is achieved through cooperative driving of a hydraulic cylinder, an upper reversing box and a lower reversing box; the high-altitude operation risk that formworks need to be disassembled and assembled repeatedly in traditional formwork overturning is avoided, and the construction safety is remarkably improved; the detachable design of the guide rail and the wall-attached bearing device is matched with the multi-platform structure of the bearing tripod, the backward moving mechanism, the middle platform and the lifting platform to form a modular construction system, materials can be rapidly turned over, and the single-time construction period is shortened; meanwhile, manual and mechanical investment is reduced through the system integrated design, continuous operation can be achieved in cooperation with the layered pouring process, the comprehensive efficiency is improved by 40% or above compared with a traditional method, and economic benefits and construction quality controllability are remarkably improved while the safety cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of high-bridge pier construction, and in particular to a high-bridge pier construction system and method based on a multi-stage hydraulic synchronous climbing formwork. Background Art

[0002] Traditional formwork turnover technology has the following drawbacks in the construction of high bridge piers: First, it carries high safety risks, making it difficult to set up operating platforms. Formwork assembly requires manual labor in confined spaces, which can easily lead to falls from height. Wind resistance is poor, and formwork tie rods are prone to failure. Second, construction efficiency is low. Formwork must be removed and reinstalled after each pour, requiring frequent crane installations and a long process. Third, quality control is difficult, formwork joints are prone to misalignment, the verticality and flatness of the pier shaft are difficult to control, and the number of embedded parts is limited. Fourth, economic efficiency is poor, with low formwork turnover and high maintenance costs.

[0003] While existing hydraulic climbing formwork technology can partially address these issues, there's still room for improvement, such as insufficient synchronization accuracy in the hydraulic system, cumbersome handling of variable cross-sections, and complex installation procedures. Therefore, it's crucial to develop a highly integrated, safe, reliable, efficient, and adaptable high-rise bridge pier construction system based on multi-stage hydraulic synchronous climbing formwork. Summary of the Invention

[0004] The purpose of the present invention is to provide a system and method for the construction of high pier bridges based on a multi-stage hydraulic synchronous climbing formwork, so as to solve the problems of high safety risks, low efficiency, difficult quality control and poor economy in the traditional flip formwork construction in the construction of high pier bridges.

[0005] To achieve the above-mentioned objectives, the present invention provides a high-pier bridge construction system based on a multi-stage hydraulic synchronous climbing formwork, the high-pier bridge construction system based on the multi-stage hydraulic synchronous climbing formwork comprising a formwork unit, a bracket unit, and a hydraulic drive unit. The formwork unit is composed of formwork installed around the pier. The hydraulic drive unit is composed of a hydraulic cylinder, a lower reversing box, and an upper reversing box. The lower reversing box is provided at the bottom of the hydraulic cylinder, and the upper reversing box is provided at the top of the hydraulic cylinder. The hydraulic cylinder is connected to an external pump station pipeline.

[0006] The bracket unit includes a load-bearing tripod, a backward movement mechanism, a middle platform, a hanging platform, a wall-mounted load-bearing device, a guide rail and a template back rib. The guide rail is detachably mounted on the side of the concrete base through the wall-mounted load-bearing device. The top of the back of the load-bearing tripod is connected to the upper reversing box, and the lower reversing box is connected to the side of the guide rail away from the concrete base. The top of the load-bearing tripod is provided with the backward movement platform, and the output end of the backward movement platform is provided with the template back rib. The template back rib is used to install the template. The bottom of the load-bearing tripod is provided with the middle platform, and the hanging platform is provided below the middle platform.

[0007] Among them, the load-bearing tripod includes a tripod crossbeam, a tripod upright and a tripod diagonal brace. The top of the tripod upright is connected to the embedded parts embedded in the concrete base through a load-bearing pin. The guide rail passes through the mounting seat at the top of the tripod upright. The tripod diagonal brace is installed at the bottom of the tripod upright. The tripod crossbeam is arranged at the top of the tripod upright. One end of the tripod crossbeam is connected to the mounting seat at the top of the tripod upright, and the other end of the tripod crossbeam is connected to the tripod diagonal brace.

[0008] Wherein, the backward movement mechanism includes a main platform load-bearing beam, a backward movement beam platform and a backward movement beam, the main platform load-bearing beam is installed above the tripod beam, the top of the main platform load-bearing beam is provided with the backward movement beam platform, the backward movement beam is slidably provided above the backward movement beam platform, the rearward movement beam is provided with a backward movement rod at one end facing the concrete base, the rearward movement beam is provided with a back rib diagonal brace at one end away from the concrete base, the template back rib is provided between the back rib diagonal brace and the backward movement beam, and the template back rib is used to install the template.

[0009] Wherein, a rearward beam extension section is provided at one end of the rearward beam platform away from the concrete base, and a platform upright is provided above one end of the rearward beam extension section away from the rearward beam platform.

[0010] Wherein, a side of the template back rib away from the template is provided with a back rib fastener, and a side of the template back rib facing the template is provided with an adjustment support component.

[0011] The top of the template is detachably mounted with a cantilever frame, and a diagonal tie rod is provided between each two adjacent templates on the same plane.

[0012] Among them, the middle platform includes a middle platform crossbeam, a vertical pole connector and a middle platform longitudinal connecting rod, one end of the middle platform longitudinal connecting rod is connected to the end of the load-bearing tripod crossbeam away from the concrete base, the other end of the middle platform longitudinal connecting rod is connected to the middle platform crossbeam, and the vertical pole connector is installed between the end of the middle platform crossbeam away from the middle platform longitudinal connecting rod and the bottom of the tripod vertical pole.

[0013] Wherein, the hanging platform includes a hanging platform beam, a first hanging platform connecting rod and a second hanging platform connecting rod, and the hanging platform beam is installed below the middle platform beam through the cooperation of the first hanging platform connecting rod and the second hanging platform connecting rod.

[0014] Wherein, the wall-mounted load-bearing device is composed of a wall-mounted seat and a wall-mounted hanging seat, and a wall-mounted support is also installed on the guide rail.

[0015] The present invention also provides a method for constructing high bridge piers based on a multi-stage hydraulic synchronous climbing formwork, which is applied to the above-mentioned high bridge pier construction system based on a multi-stage hydraulic synchronous climbing formwork, and comprises the following steps:

[0016] Fix the wall-attached load-bearing device to the side of the concrete base according to the designed spacing and check the verticality;

[0017] Assemble the hydraulic cylinder, the upper reversing box, and the lower reversing box, connect the pump station and exhaust the air, and fix the lower reversing box to the outside of the guide rail. Hoist the load-bearing tripod and fix it to the upper reversing box. Install the backward movement mechanism, the template back rib, the middle platform, and the hanging platform in sequence to ensure a stable connection.

[0018] Lift the template to the back edge of the template and fix it, adjust the verticality and joint deviation ≤ 2mm to ensure that it matches the pier contour;

[0019] Climb in stages according to the designed height, re-fix the guide rail after each step, and adjust the verticality deviation in real time;

[0020] Tie the steel bars, install the embedded parts, pour the concrete in layers between the four templates and vibrate to compact them, then cover and maintain moisture retention for ≥7 days;

[0021] After the concrete strength reaches 75%, the formwork is removed, surface residues are cleaned and defects are repaired to ensure that the flatness meets the requirements;

[0022] Repeat the climbing and pouring process to the top of the pier to complete the construction of the high pier of the bridge.

[0023] The present invention provides a bridge high pier construction system and method based on multi-stage hydraulic synchronous climbing formwork, which includes a formwork unit, a support unit and a hydraulic drive unit. The hydraulic cylinder is driven in coordination with the upper reversing box and the lower reversing box to achieve overall synchronous climbing of the formwork unit and the support unit, avoiding the high-altitude operation risk of repeated disassembly and assembly of the formwork in traditional formwork turnover, and significantly improving construction safety. Through the detachable design of the guide rail and the wall-attached load-bearing device, combined with the multi-platform structure of the load-bearing tripod, the rear movement mechanism, the middle platform and the hanging platform, a modular construction system is formed, which can not only quickly turn over materials and shorten the single construction cycle, but also control the climbing deviation within ±5mm through hydraulic synchronous control to ensure the verticality and flatness of the bridge pier. At the same time, the system integration design reduces labor and mechanical input, and cooperates with the layered casting process to achieve continuous operation, with the comprehensive efficiency increased by more than 40% compared with the traditional method, while reducing safety costs and significantly improving economic benefits and construction quality controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of a bridge high pier construction system based on a multi-stage hydraulic synchronous climbing formwork provided by the present invention.

[0026] Figure 2 It is a schematic diagram of the connection structure of two adjacent templates provided by the present invention.

[0027] Figure 3 It is a structural schematic diagram of the load-bearing tripod provided by the present invention.

[0028] Figure 4 The present invention provides a flowchart of the steps of a method for constructing high bridge piers based on a multi-stage hydraulic synchronous climbing formwork.

[0029] Figure 5 It is a construction process diagram of a bridge high pier construction method based on a multi-stage hydraulic synchronous climbing formwork provided by the present invention.

[0030] 101-Template, 102-Hydraulic Cylinder, 103-Lower Reversing Box, 104-Upper Reversing Box, 105-Guide Rail, 106-Template Back Ridge, 107-Tripod Cross Beam, 108-Tripod Vertical Pole, 109-Tripod Diagonal Bracing, 110-Load-bearing Pin, 111-Main Platform Load-bearing Beam, 112-Backward Beam Platform, 113-Backward Beam, 114-Backward Pull Rod, 115-Back Ridge Diagonal Bracing, 116-Backward Crossbeam extension section, 117-platform uprights, 118-back rib fasteners, 119-adjustable support members, 120-cantilever frame, 121-diagonal rods, 122-middle platform crossbeams, 123-upright pole connectors, 124-middle platform longitudinal connecting rods, 125-hanging platform crossbeams, 126-first hanging platform connecting rods, 127-second hanging platform connecting rods, 128-wall mounts, 129-wall mounts, 130-wall supports. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0032] See also Figures 1 to 3The present invention provides a high-pier bridge construction system based on a multi-stage hydraulic synchronous climbing formwork, which includes a formwork unit, a bracket unit, and a hydraulic drive unit. The formwork unit is composed of a formwork 101 installed around the pier. The hydraulic drive unit is composed of a hydraulic cylinder 102, a lower reversing box 103, and an upper reversing box 104. The lower reversing box 103 is provided at the bottom of the hydraulic cylinder 102, and the upper reversing box 104 is provided at the top of the hydraulic cylinder 102. The hydraulic cylinder 102 is connected to an external pump station pipeline.

[0033] The bracket unit includes a load-bearing tripod, a backward movement mechanism, a middle platform, a hanging platform, a wall-mounted load-bearing device, a guide rail 105 and a template back rib 106. The guide rail 105 is detachably mounted on the side of the concrete base through the wall-mounted load-bearing device. The top of the back of the load-bearing tripod is connected to the upper reversing box 104, and the lower reversing box 103 is connected to the side of the guide rail 105 away from the concrete base. The top of the load-bearing tripod is provided with the backward movement platform, and the output end of the backward movement platform is provided with the template back rib 106. The template back rib 106 is used to install the template 101. The bottom of the load-bearing tripod is provided with the middle platform, and the hanging platform is provided below the middle platform.

[0034] In this embodiment, the hydraulic cylinder 102 is driven in coordination with the upper reversing box 104 and the lower reversing box 103 to achieve the overall synchronous climbing of the formwork unit and the bracket unit, avoiding the high-altitude operation risk of repeated disassembly and assembly of the formwork 101 in traditional mold turning, and significantly improving construction safety; through the detachable design of the guide rail 105 and the wall-mounted load-bearing device, combined with the multi-platform structure of the load-bearing tripod, the rear movement mechanism, the middle platform and the hanging platform, a modular construction system is formed, which can not only quickly turn over materials and shorten the single construction period, but also control the climbing deviation within ±5mm through hydraulic synchronous control to ensure the verticality and flatness of the bridge pier; at the same time, the system integration design reduces labor and mechanical input, and cooperates with the layered casting process to achieve continuous operation, and the overall efficiency is improved by more than 40% compared with the traditional method, while reducing safety costs and significantly improving economic benefits and controllability of construction quality.

[0035] Furthermore, the load-bearing tripod includes a tripod crossbeam 107, a tripod upright 108 and a tripod diagonal brace 109. The top of the tripod upright 108 is connected to the embedded parts embedded in the concrete base through a load-bearing pin 110. The guide rail 105 passes through the mounting seat at the top of the tripod upright 108. The tripod diagonal brace 109 is installed at the bottom of the tripod upright 108. The tripod crossbeam 107 is arranged at the top of the tripod upright 108. One end of the tripod crossbeam 107 is connected to the mounting seat at the top of the tripod upright 108, and the other end of the tripod crossbeam 107 is connected to the tripod diagonal brace 109.

[0036] In this embodiment, the above structure is rigidly connected to the concrete base embedded part through the top of the tripod upright 108 through the load-bearing pin 110, and the guide rail 105 passes through the mounting seat at the top of the tripod upright 108 to achieve guided positioning. The triangular stabilization system formed by the tripod diagonal brace 109 and the tripod crossbeam 107 ensures the anti-overturning ability and overall structural stability of the load-bearing tripod during hydraulic climbing, and simplifies the installation and disassembly process through modular connection design, effectively improving construction safety and work efficiency.

[0037] Furthermore, the rearward movement mechanism includes a main platform load-bearing beam 111, a rearward movement beam platform 112 and a rearward movement beam 113. The main platform load-bearing beam 111 is installed above the tripod beam 107. The top of the main platform load-bearing beam 111 is provided with the rearward movement beam platform 112. The rearward movement beam 113 is slidably provided above the rearward movement beam platform 112. The rearward movement beam 113 is provided with a rearward movement rod 114 at one end facing the concrete base. The rearward movement beam 113 is provided with a back rib diagonal brace 115 at one end away from the concrete base. The template back rib 106 is provided between the back rib diagonal brace 115 and the rearward movement beam 113. The template back rib 106 is used to install the template 101.

[0038] In this embodiment, the rearward movement mechanism forms a basic support through the stable connection between the main platform load-bearing beam 111 and the tripod beam 107, and utilizes the rearward movement beam platform 112 and the sliding rearward movement beam 113 to realize the horizontal rearward movement adjustment function of the template 101. The rearward movement pull rod 114 is used to enhance the tensile strength of the structure, and the back rib diagonal brace 115 and the template back rib 106 work together to ensure the installation accuracy and stability of the template 101. The overall design not only improves the convenience of disassembly and fine-tuning of the template 101, but also effectively ensures construction safety and pier forming quality.

[0039] Furthermore, a rearward beam extension section 116 is provided at one end of the rearward beam platform 112 away from the concrete base, and a platform upright 117 is provided above one end of the rearward beam extension section 116 away from the rearward beam platform 112 .

[0040] In this embodiment, by adding the rearward moving beam extension section 116 at the end of the rearward moving beam platform 112, the rearward moving adjustment range of the template 101 is effectively expanded, thereby enhancing the construction flexibility; at the same time, the platform uprights 117 are provided to provide construction personnel with a stable operating support point, further improving the safety and convenience of high-altitude operations, and optimizing the functionality and reliability of the rearward moving system of the template 101 as a whole.

[0041] Furthermore, a back rib fastener 118 is provided on a side of the template back rib 106 away from the template 101 , and an adjustment support member 119 is provided on a side of the template back rib 106 facing the template 101 .

[0042] In this embodiment, the back rib fastener 118 is used to achieve the rapid locking and fixation of the template 101 and the template back rib 106, ensuring the overall stability of the structure, and the adjusting support member 119 is used to achieve precise fine-tuning of the verticality and flatness of the template 101, effectively improving the quality of concrete casting and molding, while simplifying the disassembly and assembly process, significantly improving construction efficiency and safety.

[0043] Furthermore, a cantilever frame 120 is detachably mounted on the top of the template 101 , and a diagonal tie rod 121 is provided between each two adjacent templates 101 on the same plane.

[0044] In this embodiment, by detachably installing the cantilever 120 on the top of the formwork 101, a safe and convenient aerial work platform is provided for construction workers, while the overall stability of the formwork 101 is enhanced; and by arranging the diagonal rods 121 between adjacent formworks 101, the lateral pressure during concrete pouring is effectively dispersed, preventing the formwork 101 from deformation or displacement. The synergistic effect of the two significantly improves construction safety, operational convenience and pier forming quality.

[0045] Furthermore, the middle platform includes a middle platform cross beam 122, a vertical pole connector 123 and a middle platform longitudinal connecting rod 124, one end of the middle platform longitudinal connecting rod 124 is connected to the end of the load-bearing tripod cross beam 107 away from the concrete base, the other end of the middle platform longitudinal connecting rod 124 is connected to the middle platform cross beam 122, and the vertical pole connector 123 is installed between the end of the middle platform cross beam 122 away from the middle platform longitudinal connecting rod 124 and the bottom of the tripod vertical pole 108.

[0046] In this embodiment, the middle platform longitudinal connecting rod 124 is used to connect the middle platform beam 122 with the load-bearing tripod beam 107 and the bottom of the tripod upright 108 to form a stable triangular support structure, and cooperates with the upright connector 123 to achieve horizontal and vertical rigid connection, which effectively disperses the construction load and enhances the overall deformation resistance of the middle platform, and provides a safe and reliable working space for construction personnel. At the same time, the modular connection method facilitates quick disassembly and assembly, significantly improving construction efficiency and structural stability.

[0047] Furthermore, the hanging platform includes a hanging platform beam 125, a first hanging platform connecting rod 126 and a second hanging platform connecting rod 127. The hanging platform beam 125 is installed below the middle platform beam 122 through the cooperation of the first hanging platform connecting rod 126 and the second hanging platform connecting rod 127.

[0048] In this embodiment, the first hanging platform connecting rod 126 and the second hanging platform connecting rod 127 cooperate with the middle platform beam 122 to firmly install the hanging platform beam 125 under the middle platform, forming a layered working space. It not only provides construction personnel with an independent and safe low-altitude operating platform, facilitating material transportation and equipment maintenance, but also enhances the overall anti-overturning ability through the double-rod connection structure, ensuring the stability and reliability of high-altitude operations. At the same time, the modular design simplifies the installation and disassembly process and improves construction efficiency.

[0049] Furthermore, the wall-mounted load-bearing device is composed of a wall-mounted seat 128 and a wall-mounted hanging seat 129 , and a wall-mounted support 130 is also installed on the guide rail 105 .

[0050] In this embodiment, the wall-mounted load-bearing device composed of the wall-mounted seat 128 and the wall-mounted hanger 129 realizes a stable and reliable connection between the guide rail 105 and the concrete base, effectively dispersing and transmitting the construction load. At the same time, the wall-mounted support 130 added to the guide rail 105 further enhances the overall anti-lateral displacement capability and prevents the guide rail 105 from deformation or displacement.

[0051] See also Figure 4 and Figure 5 The present invention also provides a method for constructing high piers of bridges based on a multi-stage hydraulic synchronous climbing formwork, which is applied to the above-mentioned high pier construction system of bridges based on a multi-stage hydraulic synchronous climbing formwork, and comprises the following steps:

[0052] S1: Fix the wall-attached load-bearing device to the side of the concrete base according to the designed spacing and check the verticality;

[0053] S2: Assemble the hydraulic cylinder 102, the upper reversing box 104 and the lower reversing box 103, connect the pump station and exhaust, and fix the lower reversing box 103 to the outside of the guide rail 105, hoist the load-bearing tripod and fix it to the upper reversing box 104, and install the backward movement mechanism, the template back rib 106, the middle platform and the hanging platform in sequence to ensure a stable connection;

[0054] S3: hoist the template 101 to the template back rib 106 and fix it, adjust the verticality and joint deviation ≤ 2mm to ensure that it matches the pier contour;

[0055] S4: climbing in stages according to the designed height, re-fixing the guide rail 105 after each stage, and adjusting the verticality deviation in real time;

[0056] S5: Tie the steel bars, install the embedded parts, pour the concrete in layers between the four templates 101 and vibrate to compact it, then cover and maintain moisture retention for ≥7 days;

[0057] S6: After the concrete strength reaches 75%, the formwork is removed, surface residues are cleaned and defects are repaired to ensure that the flatness meets the requirements;

[0058] S7: Repeat the climbing and pouring process to the top of the pier to complete the construction of the high pier of the bridge.

[0059] In this embodiment, this construction method orderly integrates the components of the multi-stage hydraulic synchronous climbing formwork system through a standardized process, from the precise positioning of the wall-attached load-bearing device to the millimeter-level regulation of the verticality of the formwork 101, combined with phased climbing, real-time verticality monitoring and concrete layered pouring and maintenance technology, to achieve mechanization, modularization and high-precision control of bridge high pier construction, effectively improving construction efficiency, structural quality and safety, while reducing the risk of high-altitude operations and human errors, and providing a systematic solution for the construction of bridge high piers in complex environments.

[0060] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A high pier construction system for bridges based on a multi-stage hydraulic synchronous climbing formwork, characterized in that: It includes a template unit, a bracket unit and a hydraulic drive unit. The template unit is composed of templates installed around the pier. The hydraulic drive unit is composed of a hydraulic cylinder, a lower reversing box and an upper reversing box. The lower reversing box is installed at the bottom of the hydraulic cylinder, and the upper reversing box is installed at the top of the hydraulic cylinder. The hydraulic cylinder is connected to the external pump station pipeline. The bracket unit includes a load-bearing tripod, a backward movement mechanism, a middle platform, a hanging platform, a wall-mounted load-bearing device, a guide rail and a template back rib. The guide rail is detachably mounted on the side of the concrete base through the wall-mounted load-bearing device. The top of the back of the load-bearing tripod is connected to the upper reversing box, and the lower reversing box is connected to the side of the guide rail away from the concrete base. The top of the load-bearing tripod is provided with the backward movement platform, and the output end of the backward movement platform is provided with the template back rib. The template back rib is used to install the template. The bottom of the load-bearing tripod is provided with the middle platform, and the hanging platform is provided below the middle platform.

2. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 1 is characterized in that: The load-bearing tripod includes a tripod crossbeam, a tripod upright and a tripod diagonal brace. The top of the tripod upright is connected to an embedded part embedded in a concrete base through a load-bearing pin. The guide rail passes through the mounting seat at the top of the tripod upright. The tripod diagonal brace is installed at the bottom of the tripod upright. The tripod crossbeam is arranged at the top of the tripod upright. One end of the tripod crossbeam is connected to the mounting seat at the top of the tripod upright, and the other end of the tripod crossbeam is connected to the tripod diagonal brace.

3. The bridge high pier construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 2 is characterized in that: The backward movement mechanism includes a main platform load-bearing beam, a backward movement beam platform and a backward movement beam. The main platform load-bearing beam is installed above the tripod beam. The top of the main platform load-bearing beam is provided with the backward movement beam platform. The backward movement beam is slidably provided above the backward movement beam platform. The end of the backward movement beam facing the concrete base is provided with a backward movement rod. The end of the backward movement beam away from the concrete base is provided with a back rib diagonal brace. The template back rib is provided between the back rib diagonal brace and the backward movement beam. The template back rib is used to install the template.

4. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 3 is characterized in that: A rearward beam extension section is provided at one end of the rearward beam platform away from the concrete base, and a platform upright is provided above one end of the rearward beam extension section away from the rearward beam platform.

5. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 4 is characterized in that: A side of the template back rib away from the template is provided with a back rib fastener, and a side of the template back rib facing the template is provided with an adjustment support component.

6. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 5 is characterized in that: A cantilever frame is detachably mounted on the top of the template, and a diagonal tie rod is provided between each two adjacent templates on the same plane.

7. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 6 is characterized in that: The middle platform includes a middle platform crossbeam, a vertical pole connector and a middle platform longitudinal connecting rod. One end of the middle platform longitudinal connecting rod is connected to the end of the load-bearing tripod crossbeam away from the concrete base, and the other end of the middle platform longitudinal connecting rod is connected to the middle platform crossbeam. The vertical pole connector is installed between the end of the middle platform crossbeam away from the middle platform longitudinal connecting rod and the bottom of the tripod vertical pole.

8. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 7 is characterized in that: The hanging platform includes a hanging platform beam, a first hanging platform connecting rod and a second hanging platform connecting rod. The hanging platform beam is installed below the middle platform beam through the cooperation of the first hanging platform connecting rod and the second hanging platform connecting rod.

9. The high pier bridge construction system based on multi-stage hydraulic synchronous climbing formwork according to claim 8, characterized in that: The wall-mounted load-bearing device is composed of a wall-mounted seat and a wall-mounted hanging seat, and a wall-mounted support is also installed on the guide rail.

10. A method for constructing high piers of bridges based on a multi-stage hydraulic synchronous climbing formwork, applied to the high pier construction system of bridges based on a multi-stage hydraulic synchronous climbing formwork as claimed in claim 1, characterized in that: The steps include: Fix the wall-attached load-bearing device to the side of the concrete base according to the designed spacing and check the verticality; Assemble the hydraulic cylinder, the upper reversing box, and the lower reversing box, connect the pump station and exhaust the air, and fix the lower reversing box to the outside of the guide rail. Hoist the load-bearing tripod and fix it to the upper reversing box. Install the backward movement mechanism, the template back rib, the middle platform, and the hanging platform in sequence to ensure a stable connection. Lift the template to the back edge of the template and fix it, adjust the verticality and joint deviation ≤ 2mm to ensure that it matches the pier contour; Climb in stages according to the designed height, re-fix the guide rail after each step, and adjust the verticality deviation in real time; Tie the steel bars, install the embedded parts, pour the concrete in layers between the four templates and vibrate to compact them, then cover and maintain moisture retention for ≥7 days; After the concrete strength reaches 75%, the formwork is removed, surface residues are cleaned and defects are repaired to ensure that the flatness meets the requirements; Repeat the climbing and pouring process to the top of the pier to complete the construction of the high pier of the bridge.

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