Concrete V-shaped rigid frame bridge construction support and construction method
The construction support of concrete V-shaped rigid structure bridge formed by the steel structure assembly solves the problem of difficulty and stability of brackets in the construction of V-shaped rigid structure bridges, and achieves the improvement of strength, stiffness and safety. It is suitable for construction under deep water conditions , the bracket is reusable and has low cost.
Patent Information
- Application Number
- CN202411369744.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2024-12-24
AI Technical Summary
During the construction process of V-shaped rigid structure bridges, it is difficult to set up a bracket and complex system conversion. It is difficult for traditional methods to meet the requirements of strength, stiffness and stability, especially in water-walked environments to be low in safety.
The concrete V-shaped rigid bridge construction bracket with a steel structure assembly includes a buckle bracket, a bottom mold support truss, a top mold support beam and a buckle system. The concrete wet weight is transmitted through the hanging rope, and the buckle bracket is installed to improve the safety of the support system and Stability, the bracket can be used as a concrete platform on the upper part of the V-pier.
The structural stability and applicability of the construction bracket are improved and the cost is reduced. The bracket is safe and reliable in deep water conditions, and the safety and stability of the support system are significantly improved.
Smart Images
Figure CN119177612A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of bridge construction, and more specifically, to a concrete V-shaped rigid frame bridge construction support and a construction method. Background Art
[0002] With the development of economy and society and the progress of science and technology, the structure types of modern landscape bridges are constantly enriched, especially the V-shaped rigid frame platform structure, which is widely used in landscape bridge construction due to its beautiful lines. However, in actual construction, the V-shaped rigid frame platform is often in an empty state facing the river, and it is difficult to set up the support, the system conversion is complicated, and the safety factor of wading is high. In addition, affected by the terrain and construction requirements, when the traditional method is used for construction, the support system of the construction support is difficult to meet the construction requirements in terms of strength, rigidity and stability. Summary of the invention
[0003] An object of the present invention is to provide a concrete V-shaped rigid frame bridge construction support and a construction method. The support is assembled using a steel structure and has the advantages of stable structure, strong applicability, low cost, and support strength and stiffness that meet construction requirements.
[0004] In order to solve the above technical problems, the present invention provides a concrete V-shaped rigid frame bridge construction support, comprising a buckle bracket arranged at the bifurcation of the V-leg of the V-shaped pier, a pair of bottom form support trusses symmetrically arranged on both sides of the buckle bracket, a top form support beam arranged on the top of the buckle bracket, a pair of cable systems connecting the pair of bottom form support trusses and the buckle tower bracket, and a pair of construction platforms arranged on the outside of the pair of bottom form support trusses, the bottom form support trusses are used for casting the inclined legs of the V-shaped rigid frame bridge, the top form support beam is used for casting the upper beam body, the bottom part of the bottom form support truss is hinged to the V-leg end of the V-shaped pier, the middle part is connected to the buckle tower bracket through the cable system, the pair of bottom form support trusses are also connected as a whole through positioning pieces, the construction platform is arranged within the projection range of the V-shaped rigid frame bridge, and a support bracket is provided on the construction platform to support the top or upper beam body of the bottom form support truss.
[0005] Preferably, the buckle bracket includes a vertical support frame, a pair of oblique support frames symmetrically located on both sides of the vertical support frame, and a top parallel connection fixedly arranged on the top of the vertical support frame and the pair of oblique support frames, the pair of oblique support frames are formed into a V-shape matching the V-shaped pier, the tops of the pair of oblique support frames are respectively fixed at the two ends of the top parallel connection, and the bottoms of the vertical support frame and the pair of oblique support frames are respectively fixed on embedded parts embedded in advance at the bifurcation of the V-legs of the V-shaped pier.
[0006] Preferably, the vertical support frame includes a plurality of support rods vertically fixed at the bifurcation of the V-legs of the V-shaped pier, and the plurality of support rods are fixedly connected as a whole by a horizontal rod connection system; the diagonal support frame is fixed to the outermost support rods of the vertical support frame by a diagonal rod connection system; and a stiffening plate is provided at the connection angle between the diagonal support frame and the top flat joint.
[0007] Preferably, the positioning member is a positioning steel bar, the top of the bottom formwork support truss is supported on the construction platform through the supporting bracket, the supporting bracket is a full-floor bracket, and a beam end support member is arranged at the bottom of the bottom formwork support truss, which is pin-connected and hinged with the buckle ear through a latch, and the buckle ear is fixed to the embedded member at the end of the V-leg embedded in the V-shaped pier in advance.
[0008] Preferably, the cable system includes a lifting rope, a steel pipe column buckle lock arranged on the inclined support frame, and a flat joint buckle lock arranged on the top flat joint, one end of the lifting rope is connected to the steel pipe column buckle lock or the flat joint buckle lock, and the other end is connected to the anchor end of the bottom surface of the bottom mold support truss.
[0009] Preferably, the steel pipe column buckle lock includes a lock body and a lock head, the lock body is fixed to the middle part of the inclined support frame, one end of the lock head is connected to the lock body through a latch pin, and the other end is connected to the lifting rope; one end of the parallel joint buckle lock is connected to the top parallel joint end through the latch pin, and the other end is connected to the lifting rope.
[0010] Preferably, the top form support beam includes a plurality of supporting main beams and a plurality of supporting secondary beams which are arranged in a horizontal and vertical staggered manner. The plurality of supporting secondary beams are placed on the top flat joint at intervals, and a unloading block is fixedly arranged between each supporting secondary beam and the top flat joint. The supporting main beam is fixed on the supporting secondary beam, and beam end supports are arranged at both ends of the supporting main beam.
[0011] The present invention also provides a method for constructing a concrete V-shaped rigid frame bridge using a concrete V-shaped rigid frame bridge construction support, comprising the following steps: Step 1: Cast the pier column to the V-leg bifurcation of the V-shaped pier, and during the casting process, complete the embedding of the embedded parts at the V-leg bifurcation of the V-shaped pier and the embedded parts at the end of the V-leg; Step 2: Set up a buckle bracket at the fork of the V-leg of the V-shaped pier, install the steel pipe column buckle lock and the flat joint buckle lock at the same time, and fix the buckle ear to the embedded part at the end of the V-leg; Step 3: Pre-assemble the bottom formwork support truss. After completion, use a lifting device to hoist the bottom formwork support truss as a whole to the set position. After positioning, use a latch to connect the beam end support of the bottom formwork support truss with the buckle ear; then install the lifting rope; Step 4: Adjust the length of the lifting rope to accurately adjust the bottom formwork support truss so that its angle is consistent with the angle of the V-leg. After positioning is completed, use positioning steel bars to connect the two ends of the bottom formwork support truss, fix the lifting rope to the steel pipe column buckle lock and the flat joint buckle lock and the bottom formwork support truss, and set up a full-height bracket on the construction platform to support the top of the bottom formwork support truss; Step 5: Install the casting template of the first segment of the V-leg on the bottom formwork support truss and tie the steel bars to cast the first segment of the V-leg; after the strength of the first segment reaches 50%, cast the next segment and repeat until all the V-legs are cast; Step 6: After the V-leg reaches the required strength, remove the V-leg bracket, set up the top formwork support beam on the top of the buckle bracket, and continue to set up the full-height bracket to support the top beam body, install the casting formwork of the V-shaped rigid frame bridge superstructure, tie the steel bars, and set the post-casting strip on the top of the V-leg; Step 7: pouring concrete. After the concrete strength of the upper structure beam reaches the design strength, pour the post-casting belt concrete. After the post-casting belt concrete reaches the design strength, tension the prestressed tendons. Step 8: Remove the construction support and complete the construction.
[0012] The present invention has at least the following beneficial effects: 1. The support structure of the present invention mainly transfers the wet weight of concrete borne by the bottom form support truss to the buckle tower support through the hanging rope, and then transfers it to the V-shaped pier by the buckle tower support. At the same time, a disc-type full-floor support is set up on the outside of the bottom form, which reduces the dependence on a single support system and improves the safety and stability of the entire support system.
[0013] 2. The support of the present invention is arranged at the bifurcation of the V-legs, is not affected by the geological and hydrological environment, and has strong applicability.
[0014] 3. The bracket of the present invention is composed of common materials such as steel sections, steel pipes, Bailey frames, etc. on the market. It does not require customized processing, can be quickly assembled, and is easy to use. It can be reused after disassembly and has low cost.
[0015] 4. The support of the present invention can be used for two purposes. After the V-legs are cast, it can also be used as a concrete platform on the upper part of the V-pier without the need for structural system transformation, which is safe and reliable.
[0016] 5. The concrete V-shaped rigid frame bridge construction support and method of the present invention can be widely used in the construction of concrete V-shaped rigid frame platforms under deep water conditions, and has broad promotion prospects.
[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1This is a front view of the overall structure of the concrete V-shaped rigid frame bridge construction support in the present invention; Figure 2 This is a front view of the bracket when the V-shaped legs are cast in the present invention; Figure 3 This is a front view of the bracket when the upper structural beam is cast in the present invention; Figure 4 This is a structural diagram of the steel pipe column lock in the present invention; Figure 5 It is a structural diagram of the flat interlocking lock in the present invention.
[0019] Among them, 1—bottom formwork support truss, 2—top formwork support beam, 3—V-shaped pier, 4—tower bracket, 4.1—vertical support frame, 4.2—inclined support frame, 5—beam end support, 6—buckle ear, 7—top flat joint, 8—support rod, 9.1—horizontal rod connection system, 9.2—inclined rod connection system, 10—steel pipe column buckle lock, 10.1—lock body, 10.2—lock head, 11—flat joint buckle lock, 12—lifting rope, 13—stiffening plate, 14—anchor end, 15—full-floor bracket, 16—construction platform, 17—unloading block, 18—positioning steel bar, 19—pin. DETAILED DESCRIPTION
[0020] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.
[0021] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.
[0022] like Figures 1 to 5As shown, the present invention provides a concrete V-shaped rigid frame bridge construction support, including a buckle bracket arranged at the V-leg bifurcation of the V-shaped pier, a pair of bottom formwork support trusses symmetrically arranged on both sides of the buckle bracket, a top formwork support beam 2 arranged on the top of the buckle bracket, a pair of cable systems connecting a pair of bottom formwork support trusses 1 and the buckle tower bracket 4, and a pair of construction platforms 16 arranged on the outside of the pair of bottom formwork support trusses, the bottom formwork support trusses 1 are used for casting the inclined legs of the V-shaped rigid frame bridge, the top formwork support beam 2 is used for casting the upper beam body, the bottom part of the bottom formwork support truss is hinged to the V-leg end of the V-shaped pier 3, and the middle part is connected to the buckle tower bracket 4 through the cable system, the pair of bottom formwork support trusses are also connected as a whole through positioning pieces, the construction platform 16 is arranged within the projection range of the V-shaped rigid frame bridge, and the construction platform 16 is provided with a support bracket for supporting the top or upper beam body of the bottom formwork support truss 1.
[0023] The bottom formwork support truss 1 is used to bear the wet weight of concrete of the V-leg. The top formwork support beam 2 is fixed to the top of the tower bracket 4 to bear the wet weight of concrete on the upper beam of the V-leg section. The locking system connects the bottom formwork support truss 1 and the tower bracket 4 to transfer the wet weight of concrete on the bottom formwork support truss 1 to the tower bracket 4.
[0024] In another technical solution, the buckle bracket includes a vertical support frame 4.1, a pair of inclined support frames 4.2 symmetrically located on both sides of the vertical support frame 4.1, and a top flat joint 7 fixedly arranged on the top of the vertical support frame 4.1 and the pair of inclined support frames 4.2, the pair of inclined support frames 4.2 are formed into a V shape matching the V-shaped pier, the tops of the pair of inclined support frames 4.2 are respectively fixed at the two ends of the top flat joint 7, and the bottoms of the vertical support frame 4.1 and the pair of inclined support frames 4.2 are respectively fixed on the embedded parts embedded in the V-leg bifurcation of the V-shaped pier in advance.
[0025] The buckle bracket is formed into a V shape, which is used to connect the formwork trusses or support beams supporting the sides and the top, and embedded parts such as connecting steel plates are pre-embedded before pouring at the fork of the V legs, which are used to weld and fix the bottom of the vertical support frame 4.1 and a pair of oblique support frames 4.2. The fixing in this application is basically welding fixing.
[0026] In another technical solution, the vertical support frame 4.1 includes a plurality of support rods 8 vertically fixed at the bifurcation of the V-legs of the V-shaped pier, and the plurality of support rods 8 are fixedly connected as a whole by a horizontal rod connection system 9.1; the diagonal support frame 4.2 is fixed to the outermost support rod 8 of the vertical support frame 4.1 by a diagonal rod connection system 9.2; a stiffening plate 13 is provided at the connection angle between the diagonal support frame 4.2 and the top flat link 7.
[0027] The horizontal rod connection system 9.1 and the oblique rod connection system 9.2 together constitute a connection system. The entire buckle bracket is welded together with various rods. The material is easy to obtain, the structure is simple, the installation is convenient, and the supporting strength is high.
[0028] In another technical solution, the positioning member is a positioning steel bar 18, the top of the bottom formwork support truss 1 is supported on the construction platform 16 through the supporting bracket, the supporting bracket is a full-floor bracket 15, and a beam end support member 5 is arranged at the bottom of the bottom formwork support truss 1, which is pin-connected and hinged with the buckle ear 6 through a latch 19, and the buckle ear 6 is fixed to the embedded member at the end of the V-leg embedded in the V-shaped pier in advance.
[0029] The middle part of the bottom formwork support truss 1 is hoisted to the end of the top flat joint 7 and the middle part of the oblique support frame 4.2 through the buckle system, and the upper part is supported on the construction platform 16 through the full-chamber bracket 15, and the trusses on the left and right sides are connected and positioned by positioning steel bars 18, and the lower part is connected to the beam end support 5, and the beam end support 5 is pinned to the buckle ear 6, and the buckle ear 6 is welded to the V-leg end embedded steel plate, and the V-leg end embedded steel plate needs to be embedded before the pier column is poured with concrete. The bottom formwork support truss 1 is stably fixed by connecting the upper, middle and lower parts respectively.
[0030] In another technical solution, the cable system includes a lifting rope 12, a steel pipe column buckle 10 arranged on the inclined support frame 4.2, and a flat joint buckle 11 arranged on the top flat joint 7. One end of the lifting rope 12 is connected to the steel pipe column buckle 10 or the flat joint buckle 11, and the other end is connected to the anchor end 14 on the bottom surface of the bottom mold support truss 1.
[0031] The two sides of the suspension rope 12 are respectively connected to the anchor end 14 on the bottom surface of the bottom mold support truss 1 and the steel pipe column buckle 10 in the middle of the inclined support frame 4.2 or the flat joint buckle 11 of the top flat joint 7. The bottom of the bottom mold support truss 1 is hinged to achieve a preliminary positioning point, and then the angle of the bottom mold support truss 1 is adjusted to the designed angle by setting the suspension rope 12, and then the bottom mold support truss 1 is continued to be stably fixed and supported by the steel pipe column buckle 10, the flat joint buckle 11 and the full-height bracket 15.
[0032] In another technical solution, the steel pipe column buckle lock 10 includes a lock body 10.1 and a lock head 10.2, the lock body 10.1 is fixed to the middle part of the inclined support frame 4.2, one end of the lock head 10.2 is pinned to the lock body 10.1 through the pin 19, and the other end is connected to the lifting rope 12; one end of the parallel joint buckle lock 11 is pinned to the end of the top parallel joint 7 through the pin 19, and the other end is connected to the lifting rope 12.
[0033] In another technical solution, the top mold support beam 2 includes a plurality of supporting main beams and a plurality of supporting secondary beams which are arranged in a horizontal and vertical staggered manner. The plurality of supporting secondary beams are placed on the top flat joint 7 at intervals, and a unloading block 17 is fixedly arranged between each supporting secondary beam and the top flat joint 7. The supporting main beam is fixed on the supporting secondary beam, and beam end supports 5 are arranged at both ends of the supporting main beam.
[0034] The beam end support 5 and the supporting main beam form a complete V-shaped leg center section upper structure beam support. The supporting main beam and the lower part of the bottom mold supporting truss 1 are both provided with beam end support 5, which is triangular.
[0035] The present invention also discloses a method for constructing a concrete V-shaped rigid frame bridge using the concrete V-shaped rigid frame bridge construction support, and the specific method steps are as follows: S1: Cast the V-leg bifurcation from the V-shaped rigid frame platform to the V-shaped pier, and at the same time, complete the embedded parts at the V-leg bifurcation and the embedded steel plates at the V-leg ends before casting.
[0036] S2: Set up a tower bracket 4 at the bifurcation of the V-leg of the V-shaped pier, install the steel pipe column lock 10, weld the buckle ear 6 to the embedded steel plate at the end of the V-leg, and after the pre-assembly of the bottom formwork support truss 1 is completed, use a lifting device to lift the bottom formwork support truss 1 as a whole to the initially set position, and after positioning, use the pin 19 to pin the beam end support 5 of the bottom formwork support truss 1 to the buckle ear 6, and then install the lifting rope 12.
[0037] S3: Accurately adjust the bottom formwork support truss 1 through the length of the steel pipe column buckle 10, the flat joint buckle 11 and the lifting rope 12 to make its angle consistent with the angle of the V-leg. After positioning is completed, use the positioning steel bar 18 to connect the two ends of the bottom formwork support truss 1, fix the lifting rope 12 to the steel pipe column buckle 10, the flat joint buckle 11 and the bottom formwork support truss 1, and set up a full-height bracket 15 on the construction platform 16 to support the top of the bottom formwork support truss 1.
[0038] S4: Install the casting formwork of the first segment of the V-leg on the bottom formwork support truss 1 and tie the steel bars to cast the first segment of the V-leg; after the strength of the first segment reaches 50%, cast the next segment until the entire V-leg is cast.
[0039] S5: After the V-leg reaches the required strength, the V-leg bracket is removed, the V-leg casting is completed, the tower bracket 4 system is converted, the top formwork support beam 2 and the full-bridge bracket 15 are set up to support the top beam body, the casting formwork of the V-shaped rigid frame bridge superstructure is installed, the steel bars are tied, and the post-casting strip is set on the top of the V-leg.
[0040] S6: Pour concrete. After the concrete strength of the upper structure beam reaches the design strength, pour the post-casting joint concrete. After the post-casting joint concrete reaches the design strength, tension the prestressed tendons.
[0041] S7: Remove all supporting structures and complete the construction.
[0042] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation mode, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, other modifications can be easily implemented, so without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.
Claims
1. A concrete V-shaped rigid frame bridge construction support, characterized in that: It includes a snap bracket arranged at the bifurcation of the V-leg of the V-shaped pier, a pair of bottom form support trusses symmetrically arranged on both sides of the snap bracket, a top form support beam arranged on the top of the snap bracket, a pair of cable systems connecting the pair of bottom form support trusses and the buckle tower bracket, and a pair of construction platforms arranged on the outside of the pair of bottom form support trusses, the bottom form support trusses are used for casting the inclined legs of the V-shaped rigid frame bridge, the top form support beam is used for casting the upper beam body, the bottom part of the bottom form support truss is hinged to the V-leg end of the V-shaped pier, the middle part is connected to the buckle tower bracket through the cable system, the pair of bottom form support trusses are also connected as a whole through positioning pieces, the construction platform is arranged within the projection range of the V-shaped rigid frame bridge, and the construction platform is provided with a support bracket for supporting the top of the bottom form support truss or the upper beam body.
2. The concrete V-shaped rigid frame bridge construction support as claimed in claim 1, characterized in that: The buckle bracket includes a vertical support frame, a pair of oblique support frames symmetrically located on both sides of the vertical support frame, and a top parallel connection fixedly arranged on the top of the vertical support frame and the pair of oblique support frames. The pair of oblique support frames are formed into a V shape matching the V-shaped pier. The tops of the pair of oblique support frames are respectively fixed at the two ends of the top parallel connection. The bottoms of the vertical support frame and the pair of oblique support frames are respectively fixed on embedded parts pre-embedded in the fork of the V legs of the V-shaped pier.
3. The concrete V-shaped rigid frame bridge construction support as claimed in claim 2, characterized in that: The vertical support frame includes a plurality of support rods vertically fixed at the bifurcation of the V-legs of the V-shaped pier, and the plurality of support rods are fixedly connected as a whole by a horizontal rod connection system; the oblique support frame is fixed to the outermost support rod of the vertical support frame by an oblique rod connection system; a stiffening plate is provided at the connection angle between the oblique support frame and the top flat joint.
4. The concrete V-shaped rigid frame bridge construction support as claimed in claim 1, characterized in that: The positioning piece is a positioning steel bar. The top of the bottom formwork support truss is supported on the construction platform through the supporting bracket. The supporting bracket is a full-floor bracket. A beam end support piece is arranged at the bottom of the bottom formwork support truss. The beam end support piece is hinged with the buckle ear through a pin. The buckle ear is fixed to the embedded piece at the end of the V-leg embedded in the V-shaped pier in advance.
5. The concrete V-shaped rigid frame bridge construction support as claimed in claim 2, characterized in that: The cable system includes a lifting rope, a steel pipe column buckle lock arranged on the inclined support frame, and a flat joint buckle lock arranged on the top flat joint. One end of the lifting rope is connected to the steel pipe column buckle lock or the flat joint buckle lock, and the other end is connected to the anchor end on the bottom surface of the bottom mold support truss.
6. The concrete V-shaped rigid frame bridge construction support as claimed in claim 5, characterized in that: The steel pipe column buckle lock includes a lock body and a lock head, the lock body is fixed to the middle part of the inclined support frame, one end of the lock head is connected to the lock body through a latch pin, and the other end is connected to the lifting rope; one end of the parallel joint buckle lock is connected to the top parallel joint end through the latch pin, and the other end is connected to the lifting rope.
7. The concrete V-shaped rigid frame bridge construction support as claimed in claim 1, characterized in that: The top form support beam includes multiple supporting main beams and multiple supporting secondary beams that are arranged in a horizontal and vertical staggered manner. The multiple supporting secondary beams are placed on the top flat connection at intervals, and a unloading block is fixedly arranged between each supporting secondary beam and the top flat connection. The supporting main beam is fixed on the supporting secondary beam, and beam end supports are arranged at both ends of the supporting main beam.
8. A method for constructing a concrete V-shaped rigid frame bridge using the concrete V-shaped rigid frame bridge construction support according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: Cast the pier column to the V-leg bifurcation of the V-shaped pier, and during the casting process, complete the embedding of the embedded parts at the V-leg bifurcation of the V-shaped pier and the embedded parts at the end of the V-leg; Step 2: Set up a buckle bracket at the fork of the V-leg of the V-shaped pier, install the steel pipe column buckle lock and the flat joint buckle lock at the same time, and fix the buckle ear to the embedded part at the end of the V-leg; Step 3: Pre-assemble the bottom formwork support truss. After completion, use a lifting device to hoist the bottom formwork support truss as a whole to the set position. After positioning, use a latch to connect the beam end support of the bottom formwork support truss with the buckle ear; then install the lifting rope; Step 4: Adjust the length of the lifting rope to accurately adjust the bottom formwork support truss so that its angle is consistent with the angle of the V-leg. After positioning is completed, use positioning steel bars to connect the two ends of the bottom formwork support truss, fix the lifting rope to the steel pipe column buckle lock and the flat joint buckle lock and the bottom formwork support truss, and set up a full-height bracket on the construction platform to support the top of the bottom formwork support truss; Step 5: Install the casting template of the first segment of the V-leg on the bottom formwork support truss and tie the steel bars to cast the first segment of the V-leg; after the strength of the first segment reaches 50%, cast the next segment and repeat until all the V-legs are cast; Step 6: After the V-leg reaches the required strength, remove the V-leg bracket, set up the top formwork support beam on the top of the buckle bracket, and continue to set up the full-height bracket to support the top beam body, install the casting formwork of the V-shaped rigid frame bridge superstructure, tie the steel bars, and set the post-casting strip on the top of the V-leg; Step 7: pouring concrete. After the concrete strength of the upper structure beam reaches the design strength, pour the post-casting belt concrete. After the post-casting belt concrete reaches the design strength, tension the prestressed tendons. Step 8: Remove the construction support and complete the construction.