A pier formwork system of a V-shaped pier continuous beam bridge

Abstract

The utility model discloses a kind of pier formwork systems of V-type pier continuous beam bridge, belong to continuous beam bridge technical field, solve the problem that existing V-type pier formwork is difficult to guarantee modeling design requirement due to needing artificial bending formwork;It includes support assembly and formwork;Support assembly includes two groups of support arches respectively located at the both sides of V-type pier column;Formwork includes multiple steel plate units spliced on the bottom of the both sides of V-type pier column, and each steel plate unit is fixed on support arch by adjusting screw rod assembly.The utility model is combined by modularized steel plate unit and support arch, replaces the mode of traditional artificial bending wood formwork, fundamentally guarantees the modeling precision of V-type pier column, simultaneously by "microelement" into multiple small steel plate units to formwork, the fitting degree of V-type pier column contour is higher, guarantee that the pier column line of forming is proportionate, easily satisfy modeling design requirement.

Description

Technical Field

[0001] This utility model relates to the field of continuous beam bridge technology, specifically to a pier column formwork system for a V-shaped pier continuous beam bridge. Background Technology

[0002] In continuous beam bridges, V-shaped pier concrete continuous rigid frame bridges are widely used due to their unique shape, which allows them to blend seamlessly with the surrounding environment. The construction method of V-shaped piers differs from that of traditional straight piers. Traditional straight pier construction is relatively simple: tie the reinforcing bars, close the steel formwork, and then pour the concrete. However, V-shaped piers consist of two limbs with a certain degree of inclination and curvature, and the formwork must meet the requirements of both the pier's shape and load-bearing capacity.

[0003] Currently, most V-shaped piers are constructed using a combination of straight lines and circular curves. However, commonly used pier formwork is cylindrical or large flat, which cannot be directly used for V-shaped pier construction. Therefore, in actual projects, most V-shaped pier construction uses a formwork system consisting of ground-supported steel pipe scaffolding combined with timber distribution beams and wooden formwork. The wooden formwork is cut to fit the V-shaped pier structure to meet design requirements. However, for the curved sections of the structure, manual bending and fixing of the formwork is required, which is time-consuming, labor-intensive, and has low precision, making it difficult to guarantee the design requirements. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a pier column formwork system for V-shaped pier continuous beam bridges, which solves the problem that existing V-shaped pier formwork requires manual bending of the formwork, making it difficult to guarantee the shape design requirements.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A pier column formwork system for a V-shaped pier continuous beam bridge is provided, including a support assembly and a formwork; the support assembly includes two sets of supporting arch frames located on both sides of the V-shaped pier; the formwork includes multiple steel plate units spliced ​​on the bottom of both sides of the V-shaped pier, and each steel plate unit is fixed to the supporting arch frame by an adjusting screw assembly.

[0006] The beneficial effects of this solution are as follows: by combining modular steel plate units and supporting arch frames, the traditional method of manually bending wooden templates is replaced, which fundamentally ensures the shaping accuracy of the V-shaped pier. At the same time, by "micro-elementizing" the template into multiple small steel plate units, the fitting degree of the V-shaped pier outline is higher, ensuring that the formed pier lines are symmetrical and easily meet the shaping design requirements.

[0007] Furthermore, each adjusting screw assembly includes a universal screw, a support screw, and three adjusting screws fixed to the supporting arch. The threaded end of the universal screw is threadedly connected to the steel plate unit, and the universal base of the universal screw is fixed to the supporting arch. The two ends of the support screw are fixedly connected to the supporting arch and the steel plate unit, respectively. The three adjusting screws are two horizontal adjusting screws and one pitch adjusting screw. The two horizontal adjusting screws are located on both sides of the longitudinal direction of the universal screw and are both unidirectionally hinged to the steel plate unit in the longitudinal direction. The pitch adjusting screw is located on one side of the transverse direction of the universal screw and is unidirectionally hinged to the steel plate unit in the transverse direction.

[0008] In this design, each steel plate unit is equipped with a universal joint screw. By applying axial force to the three adjusting screws, a torque is generated at the center of the steel plate unit. This torque allows for the horizontal and vertical adjustment of the steel plate unit, thus adapting to V-shaped pier sections with varying shapes and positions. Once the adjustment is complete, a preload is applied to the supporting screw. Since the supporting screw is located near the center of the steel plate unit, it does not generate a large torque. Therefore, the preload will tighten the steel plate unit, achieving fixation. The entire template consists of multiple such steel plate units, which is very convenient.

[0009] Furthermore, the universal joints on each steel plate unit are distributed along the centerline of the unit. This center-loaded design prevents warping caused by eccentric loads, thus improving the forming accuracy of the template.

[0010] Furthermore, the universal base of each universal screw is located on one end of the screw cylinder, and the other end of the screw cylinder is threadedly connected to the fixing stud on the supporting arch. The screw cylinder thread structure allows for quick adjustment of the initial installation height of the universal screw, accommodating V-shaped piers with different curvatures.

[0011] Furthermore, each screw barrel is provided with at least two protruding plates, each with a helical hole for threaded connection with the support screw. The protruding plates with helical holes facilitate a secure connection with the support screw.

[0012] Furthermore, each set of supporting arches includes a vertical frame, the top of which is detachably connected to multiple arches. Each arch is equipped with multiple horizontal frames that are fixedly connected to multiple steel plate units. The modular structure facilitates on-site assembly and transportation.

[0013] Furthermore, two uprights are erected opposite each other on both sides of the V-shaped pier, and each upright is equipped with multiple channel steels. The two sides of every two opposing channel steels are fixedly connected by prestressed steel strands. Since the left and right limbs of the V-shaped pier are symmetrical, to further enhance the overall integrity of the two sets of formwork, the prestressing force of the prestressed steel strands is used to counteract the opening force of the two limbs of the V-shaped pier during concrete pouring, thereby increasing rigidity and reducing deformation of the formwork during construction.

[0014] Furthermore, two steel rails are longitudinally installed on both sides of the V-shaped pier, and the bottom sides of the supporting arch frame are slidably mounted on the two steel rails. The installation of steel rails allows the supporting arch frame to be easily moved after the fixing work is completed, shortening the construction period.

[0015] Furthermore, the bottom of the uprights and each arch is equipped with steel sliding shoes that slide along the steel rails. These steel sliding shoes facilitate the sliding connection of the arches on the steel rails. Attached Figure Description

[0016] Figure 1 This is a front view of the pier formwork system; Figure 2 A three-dimensional view of the pier formwork system; Figure 3 This is a bottom view of the pier formwork system; Figure 4 This is a schematic diagram of the adjusting screw assembly; Figure 5 This is a schematic diagram of the screw barrel structure; The components include: 1. Supporting arch frame; 11. Vertical frame; 111. Channel steel; 112. Prestressed steel strand; 12. Arch frame; 13. Horizontal frame; 2. Steel plate unit; 3. Adjusting screw assembly; 31. Universal screw; 311. Screw barrel; 312. Fixing stud; 32. Supporting screw; 33. Horizontal adjusting screw; 34. Pitch adjusting screw; 4. Steel track. Detailed Implementation

[0017] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0018] This embodiment provides a pier column formwork system for a V-shaped pier continuous beam bridge, which solves the problem that existing V-shaped pier formwork requires manual bending of the formwork, making it difficult to guarantee the shape design requirements. The system is shown in detail below.

[0019] A pier column formwork system for a V-shaped pier continuous beam bridge includes a support assembly and formwork.

[0020] refer to Figure 1 and Figure 3 The support assembly includes two sets of supporting arch frames 1 located on both sides of the V-shaped pier.

[0021] For details, please refer to Figure 1 and Figure 2 Each set of supporting arch frames 1 includes a vertical frame 11. The top of the vertical frame 11 is detachably connected to multiple arch frames 12. Each arch frame 12 is provided with multiple horizontal frames 13 that are fixedly connected to multiple steel plate units 2. Each column in the vertical frame 11 and the corresponding arch frame 12 form a single support.

[0022] Two uprights 11 are erected opposite each other on both sides of the V-shaped pier column, and each upright 11 is equipped with multiple channel steels 111. Considering the symmetry of the left and right limbs of the V-shaped pier column, and to further enhance the integrity of the two sets of formwork, the two sides of each pair of opposing channel steels 111 are fixedly connected by prestressed steel strands 112. The pre-tension of the prestressed steel strands 112 counteracts the opening force of the two limbs of the V-shaped pier during concrete pouring, improving rigidity and reducing deformation of the formwork during construction. At the same time, the top of the upright 11 is connected to the arch frame 12 by the channel steels 111 and is easily locked with pins. After the pins are removed, the support can move along the length of the steel plate unit 2, facilitating later dismantling.

[0023] To shorten the construction period, two steel rails 4 are longitudinally installed on both sides of the V-shaped pier, and the bottom sides of the supporting arch frame 1 are slidably mounted on the two steel rails 4. After the supporting arch frame 1 has completed the fixing work and the prestressed steel strands 112 have been installed, it can move on the steel rails 4 to participate in the construction work of the next V-shaped pier.

[0024] In this embodiment, the bottom of the upright frame 11 and each arch frame 12 is provided with a steel sliding shoe that is slidably connected to the steel rail 4. The cross-section of the steel sliding shoe is triangular, and the steel sliding shoe facilitates the support of the arch frame 1 to slide on the steel rail 4.

[0025] refer to Figure 3 The template includes multiple steel plate units 2 spliced ​​on the bottom of both sides of the V-shaped pier column. Each steel plate unit 2 is fixed to the supporting arch frame 1 by adjusting screw assembly 3.

[0026] For details, please refer to Figure 4 Each adjusting screw assembly 3 includes a universal screw 31, a support screw 32, and three adjusting screws fixed on the support arch 1.

[0027] The threaded end of the universal screw 31 is threadedly connected to the steel plate unit 2, and the universal base of the universal screw 31 is fixed on the supporting arch 1. Furthermore, the universal screws 31 on each steel plate unit 2 are distributed along the centerline of the steel plate unit 2. The center-loaded design of the steel plate unit 2 avoids warping caused by eccentric loads, thus improving the molding accuracy of the template.

[0028] The two ends of the support screw 32 are fixedly connected to the support arch frame 1 and the steel plate unit 2, respectively.

[0029] The three adjusting screws are two horizontal adjusting screws 33 and one pitch adjusting screw 34. The two horizontal adjusting screws 33 are located on both sides of the universal screw 31 in the longitudinal direction, and are both unidirectionally hinged to the steel plate unit 2 in the longitudinal direction. The pitch adjusting screw 34 is located on one side of the universal screw 31 in the transverse direction and is unidirectionally hinged to the steel plate unit 2 in the transverse direction. In this embodiment, longitudinal direction refers to the length direction of the steel plate unit 2, and transverse direction refers to the width direction of the steel plate unit 2.

[0030] The fixing principle of the adjusting screw assembly 3 is as follows: Since each steel plate unit 2 is equipped with a universal screw 31 with a universal hinge, applying axial force to the three adjusting screws will generate a torque on the center of the steel plate unit 2. This torque can be used to adjust the horizontal and vertical position of the steel plate unit 2 to adapt to the V-shaped pier column parts with different shapes and positions. When the adjustment is in place, a preload is applied to the support screw 32. Since the support screw 32 is located near the center of the steel plate unit 2, it will not generate a large torque. Therefore, the preload will press the steel plate unit 2 tightly to achieve fixation. The entire template is composed of multiple such steel plate units 2, which is very convenient.

[0031] As a further solution in this embodiment, refer to Figure 4 and Figure 5 Each universal joint 31 has a universal base mounted on one end of a screw cylinder 311, and the other end of the screw cylinder 311 is threadedly connected to a fixing stud 312 on the support arch 1. Each screw cylinder 311 has at least two protruding plates, each with a helical hole for threaded connection with the support screw 32. The protruding plates with helical holes facilitate a secure connection with the support screw 32.

[0032] In summary, the beneficial effects of this solution are as follows: 1. By combining modular steel plate units 2 and supporting arch frames 1, the traditional method of manually bending wooden templates is replaced, which fundamentally ensures the shaping accuracy of V-shaped piers. At the same time, by "micro-elementing" the template into multiple small steel plate units 2, the fitting degree of the V-shaped pier outline is higher, ensuring that the formed pier lines are symmetrical and easily meet the shaping design requirements.

[0033] 2. The multiple steel plate units 2 after "micro-elementization" can be used as templates for various irregular curved V-shaped piers under the adjustment of various adjusting rods and universal joints, which is very flexible.

[0034] 3. The pre-tightening and fixing of each steel plate unit 2 are achieved by adjusting screws. Similarly, the loosening of the template unit is also achieved by adjusting screws, which is much more convenient than the installation and disassembly of traditional templates.

[0035] 4. For the tightening and loosening adjustment of each steel plate unit 2, there is enough space under the supporting arch frame 1 for workers to stand and operate, which is an advantage that traditional full-span steel pipe scaffolding does not have; all steel plate units 2 are fixed to the arch frame 12 by adjusting screws. When dismantling the formwork, the loosened steel plate units 2 are still on the supporting arch frame 1, only separated from the concrete surface. After all steel plate units 2 are loosened and separated, the prestressed steel strands 112 are removed, and the entire formwork system is pulled out of the bridge bottom along the steel track 4 using a winch, without affecting the construction of subsequent beam segments.

[0036] Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this solution. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this solution.

Claims

1. A pier formwork system for a V-pier continuous beam bridge, characterized by, include: The support assembly includes two sets of supporting arch frames (1) located on both sides of the V-shaped pier. The template includes multiple steel plate units (2) spliced ​​on the bottom of both sides of the V-shaped pier column. Each steel plate unit (2) is fixed to the supporting arch frame (1) by adjusting screw assembly (3). Each of the adjusting screw assemblies (3) includes a universal screw (31), a support screw (32), and three adjusting screws fixed on the support arch (1); The threaded end of the universal screw (31) is threadedly connected to the steel plate unit (2), and the universal base of the universal screw (31) is fixed on the support arch (1); The two ends of the support screw (32) are fixedly connected to the support arch (1) and the steel plate unit (2) respectively; The three adjusting screws are two horizontal adjusting screws (33) and one pitch adjusting screw (34); the two horizontal adjusting screws (33) are located on both sides of the longitudinal direction of the universal screw (31) and are both unidirectionally hinged to the steel plate unit (2) in the longitudinal direction; the pitch adjusting screw (34) is located on one side of the transverse direction of the universal screw (31) and is unidirectionally hinged to the steel plate unit (2) in the transverse direction.

2. The pier formwork system for a V-pier continuous girder bridge according to claim 1, wherein The universal screws (31) on each of the steel plate units (2) are distributed along the center line of the steel plate unit (2).

3. The pier formwork system for a V-pier continuous girder bridge according to claim 1, wherein The universal base of each universal screw (31) is provided on one end of the screw cylinder (311), and the other end of the screw cylinder (311) is threadedly connected to the fixing stud (312) on the support arch (1).

4. The pier formwork system for a V-pier continuous girder bridge according to claim 3, wherein Each of the screw cylinders (311) is provided with at least two protruding plates, and each protruding plate is provided with a spiral hole that is threadedly connected to the support screw (32).

5. The pier formwork system for a V-pier continuous girder bridge according to claim 1, wherein Each set of the supporting arch frame (1) includes a vertical frame (11), the top of which is detachably connected to multiple arch frames (12), and each arch frame (12) is provided with multiple horizontal frames (13) which are respectively fixedly connected to multiple steel plate units (2).

6. The pier formwork system for a V-pier continuous girder bridge according to claim 5, wherein Two uprights (11) are set opposite each other on both sides of the V-shaped pier, and multiple channel steels (111) are set on each of the two uprights (11). The two sides of each pair of opposite channel steels (111) are fixedly connected by prestressed steel strands (112).

7. The pier formwork system for a V-pier continuous girder bridge according to claim 5, wherein The V-shaped pier has two longitudinal steel rails (4) on both sides, and the bottom sides of the supporting arch (1) are slidably mounted on the two steel rails (4).

8. The pier formwork system for a V-pier continuous girder bridge according to claim 7, wherein The bottom of each of the uprights (11) and each of the arches (12) is provided with a steel slipper that is slidably connected to the steel rail (4).

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