Double-limb thin-wall pier formwork and manufacturing method

Abstract

The invention provides a double-limb thin-wall pier formwork and a manufacturing method. The double-limb thin-wall pier formwork comprises a plurality of layers of formwork sets and perpendicularity detection structures arranged between the adjacent formwork sets. Wherein each template group comprises template bodies which are uniformly arranged and a groove-shaped plate body which is arranged on one side of each template body; the perpendicularity detection structure comprises an array sensing structure arranged on any template body and a pressing structure arranged on other template bodies and matched with the array sensing structure; wherein the array sensing structure is used for judging the perpendicularity of the template group; and the pressing structure is used for pressing the array sensing structure. By means of the template perpendicularity detection device and method, the problems that in the prior art, perpendicularity detection can only be conducted on an installed template, perpendicularity detection cannot be achieved synchronously in the installation process, and therefore the perpendicularity detection efficiency and the template perpendicularity installation efficiency are low can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of double-limb thin-wall pier formwork, and in particular to a double-limb thin-wall pier formwork and a manufacturing method thereof. Background Art

[0002] Double-limb thin-walled pier is a commonly used structural form in bridge engineering, especially in highway bridges with large and medium spans. The structural feature of this pier type is that there are two parallel pier walls on the pier position, which are connected to the main beam by hinged or rigid connection. Double-limb thin-walled pier can increase the stiffness of the pier, reduce the peak value of the main beam support reaction force, and increase the aesthetics of the bridge. In prestressed concrete continuous rigid frame bridges, double-limb thin-walled high pier is an ideal flexible pier, which can support the superstructure and maintain the stability of the pier, and has a certain flexibility to adapt to the displacement requirements of the superstructure. The verticality control of the double-limb thin-walled pier formwork is particularly important. If the formwork deviation leads to inaccurate dimensions of the pier structure, it will affect the bearing capacity and stability of the structure. This may have a serious impact on the overall safety of the bridge. Although the prior art uses verticality detection devices and reflective marking points, and uses slide rails to adjust the position of the template to improve construction accuracy, there are the following technical problems: the verticality detection can only be performed on the installed template, and the verticality detection cannot be performed synchronously during the installation process, which easily leads to low verticality detection efficiency and low template verticality installation efficiency. Summary of the invention

[0003] The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a double-limb thin-walled pier formwork to solve the problem that the prior art can only perform verticality detection on the installed formwork, but cannot synchronously realize verticality detection during the installation process, which easily leads to low verticality detection efficiency and low formwork verticality installation efficiency.

[0004] In order to achieve the above-mentioned object, the present invention provides a double-limb thin-wall pier formwork, comprising: a plurality of layers of formwork groups, and a verticality detection structure arranged between adjacent formwork groups; wherein:

[0005] Each of the template groups includes a template body that is evenly arranged, and a grooved plate body that is arranged on one side of the template body;

[0006] The verticality detection structure includes an array sensor structure arranged on any one of the template bodies and a pressing structure arranged on other template bodies and matching the array sensor structure; wherein,

[0007] The array sensing structure is used to determine the verticality of the template group;

[0008] The pressing structure is used to press the array sensor structure.

[0009] Preferably, the array sensing structure comprises: a mounting plate, a U-shaped groove member arranged on the mounting plate, a plurality of pressing structures arranged on both sides of the U-shaped groove member, a force-bearing plate arranged on the mounting plate, and an array-arranged flexible pressure sensor arranged on the force-bearing plate, wherein:

[0010] The mounting plate is arranged on the top or bottom of one side of the template body;

[0011] The pressing structure corresponds to the flexible pressure sensor one by one;

[0012] The top opening side of the U-shaped groove is not higher than the top of the template body and not lower than the bottom of the template body;

[0013] The flexible pressure sensor is used to transmit a signal of the installation status to the construction personnel.

[0014] Preferably, both sides of the U-shaped groove are arranged as hollow cavities, a fixed plate is arranged in the hollow cavity, and sliding holes are arranged on both side walls of the fixed plate, wherein:

[0015] The fixed plate is located in the middle of the hollow cavity, and is used to divide the hollow cavity into a first cavity and a second cavity.

[0016] Preferably, one end of the pressing rod is an arc-shaped head.

[0017] Preferably, the pressing structure comprises: a pressing rod and a spring sleeved on the pressing rod, wherein:

[0018] The pressing rod is inserted into the sliding hole;

[0019] One end of the spring is connected to the fixed plate, and the other end is connected to the pressing rod;

[0020] When the spring is in a reset state, one end of the pressing rod is located in the U-shaped groove, and the other end is in contact with the corresponding flexible pressure sensor.

[0021] Preferably, an infrared transmitter is arranged on the pressing rod, and an infrared receiver facing the infrared transmitter is arranged on the other pressing rod.

[0022] Preferably, a pressing block is provided on the pressing structure, and the pressing block is used to press or release the pressing structure.

[0023] Preferably, a limiting groove is provided on the template body, and a reset member is provided in the limiting groove; wherein,

[0024] The pressing block is slidably disposed in the limiting groove, wherein:

[0025] The restoring force of the restoring member is greater than the restoring force of all springs in the pressing structures on both sides, but less than the deformation force of the two pressing rods.

[0026] Preferably, a transverse reinforcement rib and a longitudinal reinforcement rib are provided on one side of the trough-shaped plate body, and the transverse reinforcement rib and the longitudinal reinforcement rib are used to reinforce the trough-shaped plate body.

[0027] Preferably, a method for manufacturing a double-limb thin-walled pier formwork is characterized in that, S1: after applying a release agent on the trough-shaped plate body, each formwork body in the first layer of the formwork group is hung to fit closely with the formwork pedestal from top to bottom and from outside to inside, and the formwork group is fastened with bolts and tension screws before pouring;

[0028] S2: installing a second-layer formwork group on the poured concrete structure and the first-layer formwork group, and pouring, and then installing a third-layer formwork group on the second-layer formwork group and pouring;

[0029] S3: After the poured concrete meets the requirements, the mold turning construction is carried out, that is, the tension screws of the first layer of the formwork group and the second layer of the formwork group are pulled out, and the inner or outer layer of the formwork body is pulled inward or outward by the tower crane to be removed;

[0030] S4: The removed formwork group of the first layer is matched with the formwork body of the inner layer, and the removed formwork group of the second layer is sequentially installed on the formwork group of the third layer, and pouring is performed;

[0031] S5: Based on the height of the double-leg thin-walled pier, the formwork group at the bottom is turned over to complete the construction of the hollow section of the entire double-leg thin-walled pier, and finally the top and pier cap are constructed.

[0032] According to the above description and practice, the double-limb thin-walled pier formwork described in the present invention can synchronously realize verticality detection during the installation process by arranging an array sensing structure and a pressing structure on the formwork body. That is, the array sensing structure can emit signals according to the force-bearing area to provide real-time data, so that the construction team can instantly understand the status of the formwork, which is helpful to timely discover and correct deviations of the formwork body, thereby improving construction efficiency and the accuracy of formwork body installation, which not only reduces the work of disassembly and re-adjustment, but also enhances the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of a template group involved in an embodiment of the present invention from a first viewing angle.

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of the template group involved in one embodiment of the present invention from a second viewing angle.

[0035] Figure 3 Schematic diagram of the structure of a verticality detection structure involved in one embodiment of the present invention.

[0036] Figure 4 Schematic diagram of the structure of an array sensor structure involved in one embodiment of the present invention.

[0037] Figure 5 for Figure 4 Exploded diagram of .

[0038] Figure 6 It is an exploded view of the pressing structure involved in one embodiment of the present invention.

[0039] Figure 7 It is a structural schematic diagram of an elastic pressing structure involved in an embodiment of the present invention in a reset state.

[0040] Figure 8 for Figure 7 Exploded diagram of .

[0041] Fig. 9 The present invention is a flowchart of a method for manufacturing a double-limb thin-walled pier formwork according to an embodiment of the present invention.

[0042] The reference numerals in the figure are:

[0043] 1. Template group; 2. Template body; 3. Horizontal reinforcing rib; 4. Longitudinal reinforcing rib; 5. Bolt hole; 6. Pull hole; 7. Array sensing structure; 8. Pressing structure; 9. Verticality detection structure; 10. Grooved plate; 11. Mounting plate; 12. U-shaped groove; 13. Elastic pressing structure; 14. Force plate; 15. Flexible pressure sensor; 16. Fixed plate; 17. Sliding hole; 18. Pressing rod; 19. First cavity; 20. Second cavity; 21. Spring; 22. Pressing block; 23. Limiting groove; 24. Resetting member; 25. Infrared transmitter; 26. Infrared receiver; 27. Hollow cavity. DETAILED DESCRIPTION

[0044] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0045] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second", etc. are only used as marks, and are not restrictions on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In view of the above-mentioned conventional prior art that can only detect the verticality of the installed formwork but cannot realize the verticality detection synchronously during the installation process, which easily leads to the problem of low verticality detection efficiency and low formwork verticality installation efficiency, the present invention proposes a double-limb thin-wall pier formwork and a manufacturing method.

[0048] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] Please refer to Figures 1 to 9The double-limb thin-walled pier template of the present invention includes: a plurality of layers of template groups 1, and a verticality detection structure 9 arranged between adjacent template groups 1; wherein each template group 1 includes uniformly arranged template bodies 2, and a grooved plate body 10 arranged on one side of the template body 2; the verticality detection structure 9 includes an array sensor structure 7 arranged on any one of the template bodies 2, and a pressing structure 8 arranged on other template bodies 2 and matching the array sensor structure 7; wherein the array sensor structure 7 is used to judge the verticality of the template group 1; and the pressing structure 8 is used to press the array sensor structure 7. By arranging the array sensor structure 7 and the pressing structure 8 on the template body 2, the verticality detection can be realized synchronously during the installation process, that is, the array sensor structure 7 can emit a signal according to the force area, provide real-time data, enable the construction team to immediately understand the status of the template, help to timely discover and correct the deviation of the template body 2, thereby improving the construction efficiency and the accuracy of the installation of the template body 2, not only reducing the work of disassembly and re-adjustment, but also enhancing the stability of the structure. The array sensor structure 7 is arranged at both ends of one side of the top or bottom of the template body 2. In this way, lateral positioning can be better performed. In practice, it is not excluded that the array sensor structure 7 can also be arranged at other positions or set to other data.

[0050] The array sensing structure 7 includes: a mounting plate 11, a U-shaped groove 12 arranged on the mounting plate 11, a plurality of pressing structures 8 arranged on both sides of the U-shaped groove 12, a force-bearing plate 14 arranged on the mounting plate 11, and an array-arranged flexible pressure sensor 15 arranged on the force-bearing plate 14, wherein the mounting plate 11 is arranged on the top or bottom of one side of the template body 2; the pressing structure 8 corresponds to the flexible pressure sensor 15 one by one; the top opening side of the U-shaped groove 12 is not higher than the top of the template body 2 and not lower than the bottom of the template body 2; the flexible pressure sensor 15 is used to transmit a signal of the installation status to the construction personnel. In this embodiment, the mounting plate 11 can be fixed on the template body 2 by welding or other movable fixing methods, and the flexible pressure sensor 15 is powered by a battery or an external power supply. When the template bodies 2 of adjacent layers are matched, the pressing structure 8 presses the elastic pressing structure 13, and the elastic pressing structure 13 presses the flexible pressure sensor 15, and the pressing structure 8 is judged whether it is inserted into the U-shaped groove 12 by whether each flexible pressure sensor 15 transmits a signal, so as to limit the horizontal lateral displacement of the template body 2 through the U-shaped groove 12, and further judged whether all flexible pressure sensors 15 transmit signals to determine whether the horizontal longitudinal position of the template body 2 is installed in place, so as to facilitate the real-time transmission of signals by the flexible pressure sensors 15, such as when the pressing structure 8 is fully matched with the U-shaped groove 12, the pressing structure 8 is located in the groove. On the opposite side of the plate body 10, at least one flexible pressure sensor 15 on one side of the grooved plate body 10 does not emit a signal, such as the flexible pressure sensors 15 in a row adjacent to the grooved plate body 10 do not emit a signal or the upper or lower flexible pressure sensors 15 in a row adjacent to the grooved plate body 10 do not emit a signal. Construction personnel can obtain verticality information in real time during the installation of the template body 2 and make adjustments quickly, thereby improving construction efficiency. The top opening side of the U-shaped groove member 12 is limited to not higher than the top of the template body 2 or not lower than the bottom of the template body 2 to avoid affecting the sealing of the upper and lower template bodies 2, and it is also convenient for the template body 2 to serve as the first layer.

[0051] Among them, the two sides of the U-shaped groove member 12 are set as hollow cavities, and a fixed plate 16 is set in the hollow cavity. Sliding holes 17 are respectively set on the two side walls of the fixed plate 16, wherein the fixed plate 16 is located in the middle of the hollow cavity, and the fixed plate 16 is used to divide the hollow cavity into a first cavity 19 and a second cavity 20. The first cavity 19 is located on one side of the groove body of the U-shaped groove member 12, and the second cavity 20 is located on one side of the force-bearing plate 14.

[0052] Among them, the pressing structure 8 includes: a pressing rod 18, and a spring 21 sleeved on the pressing rod 18, wherein the pressing rod 18 is arranged in the first cavity 19 and penetrated into the sliding hole 17; one end of the spring 21 is connected to the fixed plate 16, and the other end is connected to the pressing rod 18; when the spring 21 is in the reset state, one end of the pressing rod 18 is located in the U-shaped groove 12, and the other end is abutted against the corresponding flexible pressure sensor 15. The pressing structure 8 is an adjustable elastic pressing structure 13. The pressing rod 18 applies pressure to the flexible pressure sensor 15 under the action of the spring 21, so that the pressing rod 18 is converted from a contact state with the flexible pressure sensor 15 to a state of pressing and transmitting a signal, which can ensure that the flexible pressure sensor 15 can accurately measure the verticality change of the template body 2. Setting the spring 21 and the pressing rod 18 in the hollow cavity of the U-shaped groove 12 can protect these components from interference from the external environment, and the setting of the fixed plate 16 can also effectively prevent the problem that the pressing rod 18 is bounced into the hollow cavity by the pressing force and cannot be reset.

[0053] One end of the pressing rod 18 is an arc-shaped head, which is beneficial for the pressing structure 8 to apply pressure to the pressing rod 18 to compress the spring 21 .

[0054] Among them, an infrared transmitter 25 is arranged on the pressing rod 18, and an infrared receiver 26 facing the infrared transmitter 25 is arranged on the other pressing rod 18. The infrared transmitter 25 and the infrared receiver 26 can block the infrared receiver 26 from receiving signals while the pressing structure 8 presses the elastic pressing structure 13, so as to cooperate with the array sensing structure 7 to perform dual detection of verticality.

[0055] A pressing block 22 is provided on the pressing structure 8. The pressing block 22 is used to press or release the pressing structure 8. The pressing block 22 is fixedly provided on the template body 2. If one side of the pressing structure 8 is installed to cooperate with the template base, the template base needs to be a specific structure to ensure that it can be sealed with the grooved plate 10. A limiting groove 23 is provided on the template body 2. A reset member 24 is provided in the limiting groove 23. The reset member 24 can be a reset spring 21 or other reset structures. The pressing block 22 is slidably provided in the limiting groove 23. The reset force of the reset member 24 is greater than the reset force of all the springs 21 in the pressing structures 8 on both sides, and less than the deformation force of the two pressing rods 18. The pressing block 22 is arranged in the limiting groove 23 to avoid affecting the sealing performance of the upper and lower template bodies 2, and is also convenient for the template body 2 as the first layer. It can also avoid the pressing rod 18 directly bearing the weight of the template body 2, which may easily cause the pressing rod 18 to be easily deformed. At the same time, the reset force of the reset member 24 is limited to be greater than the reset force of all the springs 21 in the elastic pressing structure 138 on both sides, and less than the deformation force of the two pressing rods 18, so as to ensure that the pressing block 22 can press all the pressing rods 18 in the two elastic pressing structures 138 under the reset action of the reset member 24 to shrink the springs 21. At the same time, it is also necessary to avoid excessive reset force of the reset member 24, which may cause the pressing rod 18 to deform when the two pressing rods 18 are subjected to force (that is, the minimum number of pressing rods 18 are subjected to force), so as to avoid the inability to perform verticality detection.

[0056] Among them, a transverse reinforcement rib 3 and a longitudinal reinforcement rib 4 are arranged on one side of the trough-shaped plate body 10 , and the transverse reinforcement rib 3 and the longitudinal reinforcement rib 4 can reinforce the trough-shaped plate body 10 .

[0057] Among them, a method for manufacturing a double-limb thin-walled pier formwork is characterized in that, S1: after applying a release agent on the trough-shaped plate body 10, each formwork body 2 in the first layer of the formwork group 1 is hung and tightly matched with the formwork pedestal from top to bottom and from outside to inside, and the formwork group 1 is fastened with bolts and tension screws before pouring;

[0058] S2: installing the second layer of formwork group 1 on the poured concrete structure and the first layer of formwork group 1, and pouring, and then installing the third layer of formwork group 1 on the second layer of formwork group 1 and pouring;

[0059] S3: After the poured concrete meets the requirements, the mold turning construction is carried out, that is, the tension screws of the first layer of the formwork group 1 and the second layer of the formwork group 1 are pulled out, and the inner or outer layer of the formwork body 2 is pulled inward or outward by a tower crane to be removed;

[0060] S4: The removed formwork group 1 of the first layer is matched with the formwork body 2 of the inner layer, and the removed formwork group 1 of the second layer is sequentially installed on the formwork group 1 of the third layer, and pouring is performed;

[0061] S5: Based on the height of the double-leg thin-walled pier, the formwork group 1 located at the bottom is turned over to complete the construction of the hollow section of the entire double-leg thin-walled pier, and finally the top and pier cap are constructed.

[0062] During implementation, the foundation is constructed first, and then the solid section is constructed on the constructed foundation. After the solid section is constructed, the middle hollow section is constructed; after the middle hollow section is constructed, the mold reversal construction is carried out; after the mold reversal construction is completed, the top and pier cap construction are carried out. The specific steps of the entire hollow section construction are: after applying the release agent on the opposite side of the trough of the trough plate 10, the formwork bodies 2 in the first layer of the formwork group 1 are hung from top to bottom and from outside to inside to fit tightly with the formwork pedestal, and the tension screws are installed through the tension holes 6 after initial tightening with bolts passing through the matching bolt holes 5, and the position is adjusted by a total station, and then the bolts and tension screws are tightened before pouring, wherein the first layer of the formwork group 1 only has the outer layer of the formwork body 2; the second layer of the formwork group 1 is installed on the poured concrete structure and the first layer of the formwork group 1, and poured, and then the third layer of the formwork group 1 is installed on the second layer of the formwork group 1 and poured, wherein the second layer of the formwork group 1 and the above formwork groups 1 include the inner layer of the formwork The main body 2 and the outer layer of the formwork main body 2, the inner layer of the formwork main body 2 and the outer layer of the formwork main body 2 have the same structure, but are different in size; after the poured concrete meets the requirements, the mold is turned over, that is, the tension screws of the first layer of the formwork group 1 and the second layer of the formwork group 1 are pulled out, and the inner or outer layer of the formwork body is pulled inward or outward by a tower crane to be removed; the removed first layer of the formwork group 1 is coordinated with the inner layer of the formwork body, and the removed second layer of the formwork group 1 is installed on the third layer of the formwork group 1 in sequence, and poured; based on the height of the double-limb thin-walled pier, if it is necessary to turn the mold 5 times, the formwork group 1 at the bottom will be turned over each time to complete the construction of the entire double-limb thin-walled pier hollow section, and finally the top and pier cap construction will be carried out. When the upper and lower layers of the template body 2 cooperate with each other, the pressing structure 8 presses the entire area or part of the area of ​​the array sensor structure 7, and the pressed area transmits a signal to the construction personnel or the unpressed area does not transmit a signal to the construction personnel, so as to facilitate the construction personnel to judge whether it is installed vertically in place. If it is not installed in place, the position is adjusted to ensure that the entire area of ​​the array sensor structure 7 is pressed.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A double-limb thin-walled pier formwork, characterized in that: include: Several layers of template groups, and verticality detection structures arranged between adjacent template groups; wherein, Each of the template groups includes a template body that is evenly arranged, and a grooved plate body that is arranged on one side of the template body; The verticality detection structure includes an array sensor structure arranged on any one of the template bodies and a first pressing structure arranged on the other template bodies and matching the array sensor structure; wherein, The array sensing structure is used to determine the verticality of the template group; The first pressing structure is used to press the array sensor structure.

2. The double-limb thin-walled pier formwork according to claim 1, characterized in that: The array sensing structure comprises: a mounting plate, a U-shaped groove member disposed on the mounting plate, a plurality of second pressing structures disposed on both sides of the U-shaped groove member, a force-bearing plate disposed on the mounting plate, and an array-arranged flexible pressure sensor disposed on the force-bearing plate, wherein: The mounting plate is arranged on the top or bottom of one side of the template body; The second pressing structure corresponds one-to-one to the flexible pressure sensor; The top opening side of the U-shaped groove is not higher than the top of the template body and not lower than the bottom of the template body; The flexible pressure sensor is used to transmit a signal of the installation status to the construction personnel.

3. The double-limb thin-walled pier formwork according to claim 2, characterized in that: The two sides of the U-shaped groove are set as hollow cavities, a fixed plate is set in the hollow cavity, and sliding holes are respectively set on the two side walls of the fixed plate, wherein: The fixed plate is located in the middle of the hollow cavity, and is used to divide the hollow cavity into a first cavity and a second cavity.

4. The double-limb thin-walled pier formwork according to claim 3, characterized in that: One end of the pressing rod is an arc-shaped head.

5. The double-limb thin-walled pier formwork according to claim 3, characterized in that: The pressing structure comprises: a pressing rod and a spring sleeved on the pressing rod, wherein: The pressing rod is arranged in the first cavity and penetrates the sliding hole; One end of the spring is connected to the fixed plate, and the other end is connected to the pressing rod; When the spring is in a reset state, one end of the pressing rod is located in the U-shaped groove, and the other end is in contact with the corresponding flexible pressure sensor.

6. The double-limb thin-walled pier formwork according to claim 5, characterized in that: An infrared transmitter is arranged on the pressing rod, and an infrared receiver facing the infrared transmitter is arranged on the other pressing rod.

7. The double-limb thin-walled pier formwork according to claim 1, characterized in that: A pressing block is arranged on the pressing structure, and the pressing block is used to press or release the pressing structure.

8. The double-limb thin-walled pier formwork according to claim 7, characterized in that: A limiting groove is provided on the template body, and a reset member is provided in the limiting groove; wherein, The pressing block is slidably disposed in the limiting groove, wherein: The restoring force of the restoring member is greater than the restoring force of all springs in the pressing structures on both sides, but less than the deformation force of the two pressing rods.

9. The method for manufacturing a double-limb thin-walled pier formwork according to claim 1, characterized in that: A transverse reinforcement rib and a longitudinal reinforcement rib are arranged on one side of the trough-shaped plate body, and the transverse reinforcement rib and the longitudinal reinforcement rib are used to reinforce the trough-shaped plate body.

10. A method for manufacturing a double-limb thin-walled pier formwork, characterized in that: Using the double-limb thin-walled pier formwork according to any one of claims 1 to 9, the method comprises the following steps: S1: After applying the release agent on the trough plate, each formwork body in the first layer of the formwork group is hung and closely matched with the formwork pedestal from top to bottom and from outside to inside, and the formwork group is fixed with bolts and tension screws before pouring; S2: installing a second-layer formwork group on the poured concrete structure and the first-layer formwork group, and pouring, and then installing a third-layer formwork group on the second-layer formwork group and pouring; S3: After the poured concrete meets the requirements, the mold turning construction is carried out, that is, the tension screws of the first layer of the formwork group and the second layer of the formwork group are pulled out, and the inner or outer layer of the formwork body is pulled inward or outward by the tower crane to be removed; S4: The removed formwork group of the first layer is matched with the formwork body of the inner layer, and the removed formwork group of the second layer is sequentially installed on the formwork group of the third layer, and pouring is performed; S5: Based on the height of the double-leg thin-walled pier, the formwork group at the bottom is turned over to complete the construction of the hollow section of the entire double-leg thin-walled pier, and finally the top and pier cap are constructed.

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