Method for erecting a bridge jacking platform and erecting component

Abstract

The application relates to the technical field of bridge reconstruction, and discloses a bridge jacking platform erection method and erection component, which comprises a reinforcing rib arranged on a pier column, a reinforcing ring arranged on the periphery of the pier column, a positioning steel ring arranged outside the reinforcing ring and a positioning hoop arranged outside the reinforcing ring, the lower end face of the positioning hoop abuts against the upper end face of the positioning steel ring, and the end of the reinforcing rib, which is away from the pier column, is fixed with the reinforcing ring; the erection component further comprises a corbel arranged on the outer sidewall of the positioning hoop, a distribution beam arranged on the corbel and used for placing a jack, and an operation platform arranged on the positioning steel ring, and the corbel is symmetrically arranged at the outer sidewall end of the positioning hoop; the application can reduce the damage to the bridge structure when the jacking platform is erected.

Description

Technical Field

[0001] This application relates to the technical field of bridge reconstruction, and in particular to a method for erecting a bridge jacking platform and the erection components thereof. Background Technology

[0002] Bridges are an important component of traffic engineering. Some bridges spanning rivers may become unsuitable due to changes in the river or road upgrades over time, requiring them to be jacked up to raise their height and ensure smooth traffic flow.

[0003] A bridge typically consists of piers spaced apart along the river's flow direction, multiple cap beams fixed above the piers and spaced apart along the bridge's extension direction, and box girders mounted on the cap beams, with the bridge deck above the box girders. When lifting existing bridges, since it is difficult to set up support points in the river channel, it is generally necessary to insert longitudinal steel bars into the side walls of the piers or cap beams as supports, then install corbels on the steel bars to form a lifting platform, and finally place jacks on the corbels to lift the box girder.

[0004] Regarding the aforementioned technologies, the method of inserting steel bars through the piers to set up the lifting platform has low support strength and will damage the pier structure, reducing the strength of the bridge. Summary of the Invention

[0005] In order to reduce damage to the bridge structure when building a lifting platform, this application provides a method for erecting a bridge lifting platform and erection components.

[0006] This application provides a method for erecting a bridge jacking platform and erection components, adopting the following technical solution: A method and components for erecting a bridge jacking platform include reinforcing ribs on a pier, reinforcing rings around the pier, positioning steel rings outside the reinforcing rings, and positioning clamps outside the reinforcing rings. The lower end face of the positioning clamps abuts against the upper end face of the positioning steel rings. The end of the reinforcing ribs away from the pier is fixed to the reinforcing rings. The platform also includes corbels on the outer sidewall of the positioning clamps, a distribution beam on the corbels for placing jacks, and an operating platform on the positioning steel rings. The corbels are symmetrically arranged on the outer sidewall of the positioning clamps. All corbels on the same straight line along the direction of river flow form a support group, and the upper surfaces of all corbels in a support group abut against the same distribution beam.

[0007] By adopting the above technical solution, the cross-section of the pier can be increased by setting reinforcing ribs, reinforcing rings, and positioning steel rings at the upper end of the pier, thereby strengthening the pier's strength. At the same time, positioning clamps are set on the pier, corbels are set on the positioning clamps, and distribution beams are set on the corbels, which can be used to build jacking platforms on both sides of the pier for placing jacks. The positioning steel rings can support the positioning clamps and improve the stability of the positioning platforms. The operating platform set outside the positioning steel rings can provide workers with walking space, thereby facilitating the jacking construction of the bridge.

[0008] Optionally, the reinforcing ring includes a ring body and a steel cage embedded in the ring body, wherein the end of the reinforcing bar facing away from the pier column is inserted into the ring body and fixed to the steel cage.

[0009] By adopting the above technical solution, setting up a steel cage and fixing the steel cage to the reinforcing bars, the connection strength between the reinforcing ring and the pier column can be increased.

[0010] Optionally, a plurality of shear studs are provided on the inner sidewall of the positioning clamp, and one end of the shear stud facing away from the inner sidewall of the positioning clamp is inserted into the reinforcing ring, and a limit block is provided on the end of the shear stud facing away from the inner sidewall of the positioning clamp.

[0011] By adopting the above technical solution, shear studs can strengthen the connection between the positioning clamp and the reinforcing ring, thereby improving the stability of the positioning clamp.

[0012] Optionally, the bracket includes a first horizontal plate and a second horizontal plate that are parallel to each other, a vertical support plate that is vertically disposed between the first horizontal plate and the second horizontal plate, and an inclined support plate disposed on the lower surface of the second horizontal plate. The side of the first horizontal plate, the second horizontal plate, the vertical support plate and the inclined support plate facing the positioning clamp are all arc surfaces corresponding to the outer sidewall of the positioning clamp.

[0013] By adopting the above technical solution, the first horizontal plate is used to support the distribution beam, and the vertical support plate, the second horizontal plate and the inclined support plate set below the first horizontal plate can enhance the stress strength of the first horizontal plate.

[0014] Optionally, the positioning clamp includes a first half-ring and a second half-ring, and a connector for fixing the first half-ring and the second half-ring.

[0015] Optionally, a first vertical plate is provided on both sides of the two first semi-rings, and a second vertical plate is provided on both sides of the second semi-ring. The first vertical plate and the second vertical plate are connected by the connector to form the vertical support plate.

[0016] By adopting the above technical solution, the bracket and the positioning clamp are integrated, which can increase the strength of the bracket fixed to the positioning clamp and improve the on-site construction efficiency.

[0017] Optionally, a first reinforcing rib is provided on the inner sidewall of the first semi-ring, and a second reinforcing rib is provided on the inner sidewall of the second semi-ring. When the first semi-ring and the second semi-ring are fixed together, the end faces of the first reinforcing rib and the second reinforcing rib are fixed together, and the contact surfaces of the first reinforcing rib and the second reinforcing rib are offset from the connection surfaces of the first semi-ring and the second semi-ring.

[0018] By adopting the above technical solution, the connection between the first reinforcing rib and the second reinforcing rib can increase the strength of the positioning clamp. At the same time, the contact surfaces of the first and second reinforcing ribs are offset from the connection surfaces of the first and second half-rings, which can enhance the connection strength of the contact surfaces of the first and second half-rings.

[0019] Optionally, the corbel further includes a reinforcing plate disposed on the lower surface of the first horizontal plate, the side wall of the reinforcing plate being fixed to the side wall of the positioning clamp, and the reinforcing plate being symmetrically disposed on the first horizontal plate with the vertical support plate as the symmetrical face.

[0020] By adopting the above technical solution, the stress strength of the first horizontal plate can be increased, and the stability of the distribution beam support can be improved.

[0021] Optionally, the operating platform includes multiple support rods arranged in parallel to each other, and a panel disposed on the support rods. The support rods are symmetrically arranged on the side walls of the positioning steel ring, and the panel is disposed at both ends of the support rods.

[0022] By adopting the above technical solution, the support rod is fixed on both sides of the positioning steel ring, and the panel is set on the support rod, so that the operating platform can be erected on the pier without damaging the pier structure.

[0023] A method for erecting components including the aforementioned bridge jacking platform includes the following steps: Step 1: Insert one end of the reinforcing bar into the pier column, and set multiple bars along the outer sidewall of the pier column at the upper end of the pier column to install the reinforcing bars in the pier column. Step 2: Install the reinforcing cage on the outer side wall of the upper end of the pier column, fix the positioning steel ring on the outside of the reinforcing cage, leave a gap between the upper end of the positioning steel ring and the cap beam, then pour concrete between the positioning steel ring and the pier column to form the lower part of the ring body, fix the positioning steel ring on the outside of the pier column, and thicken and strengthen the pier column. Step 3: The operating platform for workers to walk on is constructed by welding onto the outer sidewall of the positioning steel ring; Step 4: First, weld the corbel to the positioning clamp. Then, install the positioning clamp on the outside of the pier column. The lower surface of the positioning clamp is welded to the upper surface of the positioning steel ring. The two end faces of the first reinforcing rib are welded to the two end faces of the second reinforcing rib respectively. Then, pour concrete between the positioning clamp and the pier column to form the upper part of the ring. Fix the positioning clamp to the outside of the pier column and provide synchronous support for the positioning clamp through the positioning steel ring. Step 5: Weld distribution beams onto the brackets to form a platform for placing the jacks. During welding, all brackets located on the same side of the river flow direction are welded to the same distribution beam. In summary, this application includes at least one of the following beneficial effects: 1. By setting positioning clamps on the outside of the pier column, setting corbels on the outside of the clamps, and setting distribution beams above the corbels, a lifting platform for placing jacks can be formed; 2. By installing reinforcing rings and positioning steel rings on the outside of the pier, the strength of the pier can be enhanced, and the fixing strength of the positioning clamps can be increased. 3. By setting up an operating platform on the outside of the positioning steel ring, it is convenient for workers to carry out jacking construction on the bridge. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Example 1; Figure 2 This is a schematic diagram of the exploded structure of the reinforcing ring in Example 1; Figure 3 This is a schematic diagram of the operating platform in Example 1; Figure 4 This is a schematic diagram of the cow leg structure in Example 1; Figure 5 This is a schematic diagram of the positioning clamp in Example 1.

[0025] Explanation of reference numerals in the attached drawings: 101, pier column; 102, cap beam; 103, box girder; 1, reinforcing bar; 2, reinforcing ring; 21, ring body; 22, reinforcing cage; 3, positioning steel ring; 4, positioning clamp; 41, shear stud; 42, first half ring; 421, first reinforcing bar; 43, second half ring; 431, second reinforcing bar; 44, limiting block; 5, corbel; 51, first horizontal plate; 52, second horizontal plate; 53, vertical support plate; 54, inclined support plate; 55, reinforcing plate; 6, distribution beam; 7, operating platform; 71, support rod; 72, panel; 8, connector. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] Example 1: This application discloses an erection component for a bridge jacking platform. (Refer to...) Figure 1 and Figure 2 The erected components include reinforcing ribs 1 fixed to the side wall of pier 101, reinforcing rings 2 fixed to the periphery of pier 101, positioning steel rings 3 and positioning clamps 4 fixed to the outside of reinforcing rings 2, with positioning steel rings 3 providing support for positioning clamps 4; it also includes corbels 5 fixed to the side wall of positioning clamps 4, and distribution beams 6 fixed to corbels 5, with jacks placed on distribution beams 6 to lift the box girder 103 and the bridge deck. By setting up structures such as positioning steel rings 3, positioning clamps 4 and corbels 5, stable support can be provided during the bridge lifting process, while strengthening the pier 101 and improving the stability of the bridge.

[0028] Reference Figure 1 and Figure 2 In this embodiment, the reinforcing rib 1 is a steel bar. One end of the reinforcing rib 1 passes through the side wall of the pier 101 and is fixed inside the pier 101 along the direction perpendicular to the side wall of the pier 101. The other end of the reinforcing rib 1 extends away from the side wall of the pier 101. Multiple reinforcing ribs 1 are fixed circumferentially at intervals on the outer side wall of the upper end of the pier 101. The reinforcing ring 2 includes a ring body 21 made of concrete and a steel cage 22 fixed to the outer side wall of the pier 101. The steel cage 22 is formed by crisscrossing steel bars to form a ring shape. The steel cage 22 can be fixed to the outer side wall of the pier 101 by means of wall top or other means. At the same time, the steel cage 22 can be fixed to the reinforcing rib 1 by welding or wire. When the ring body 21 is poured, the steel cage 22 can be embedded in the ring body 21, thereby increasing the cross-sectional area of ​​the pier 101 and improving the strength of the pier 101.

[0029] Reference Figure 2 and Figure 3 In this embodiment, the cross-section of the positioning steel ring 3 is circular. The positioning steel ring 3 is coaxially sleeved on the upper end of the pier column 101. During construction, the positioning steel ring 3 can be formed by welding two half rings together, and the positioning steel ring 3 can be fixed to the upper end of the pier column 101 by means of erecting a positioning plate or setting tie bolts. At this time, there is a certain distance between the upper surface of the positioning steel ring 3 and the cap beam 102 at the upper end of the pier column 101. The positioning steel ring 3 and the diameter of the pier column 101 form a casting cavity for casting the lower part of the ring body 21. After the ring body 21 is cast, the reinforcing ring 2 and the positioning steel ring 3 are both fixed on the outer side wall of the pier column 101.

[0030] Reference Figure 1 and Figure 3In this embodiment, the erection structure also includes an operating platform 7 for workers to walk on and carry out construction. The operating platform 7 includes multiple parallel support rods 71 ​​and panels 72 fixed to the upper surface of the support rods 71. The support rods 71 ​​can be I-beams, channel steel, square steel, etc. In this embodiment, the support rods 71 ​​are hollow square steel. Specifically, multiple piers 101 are spaced apart along the river flow direction in the bridge, and support rods 71 ​​are symmetrically fixed on each side wall. The support rods 71 ​​are arranged along the extension direction of the bridge. The panels 72 are fixed to both ends of the support rods 71 ​​by welding or other means, and the panels 72 are arranged along the river flow direction, thereby facilitating workers to walk on the panels 72 and erect the lifting device. Optionally, a connecting plate can be placed between two adjacent panels 72. A certain distance is left between the upper surface of the panel 72 and the cap beam 102, and the distance between the panel 72 and the cap beam 102 is preferably 1m-1.5m to facilitate subsequent construction when lifting the box girder 103.

[0031] Reference Figure 4 Figure 5 In this embodiment, the positioning clamp 4 includes a first half-ring 42 and a second half-ring 43, and a connecting member 8 for fixing the first half-ring 42 and the second half-ring 43. Specifically, the first half-ring 42 has a first vertical plate welded to both sides, and the second half-ring 43 has a second vertical plate welded to both sides. The connecting member 8 can be a bolt and a nut. The first half-ring 42 and the second half-ring 43 are fastened to the pier 101. At this time, the surfaces of the first vertical plate and the second vertical plate abut against each other. The bolt is passed through the first vertical plate and the second vertical plate in sequence, and locked by the nut. The positioning clamp 4 can be set on the outside of the pier 101. Multiple connecting members 8 can be set along the surface of the first vertical plate. The lower surface of the positioning clamp 4 abuts against the upper surface of the positioning steel ring 3 and can be fixed by welding. Thus, the positioning steel ring 3 can further increase the stability of the positioning clamp 4.

[0032] Reference Figure 4 and Figure 5 In this embodiment, shear studs 41 are welded to the inner sidewall of the positioning clamp 4. Multiple shear studs 41 are fixed at intervals along the inner sidewall of the positioning clamp 4. When the positioning clamp 4 is fixed to the upper end of the positioning steel ring 3, a space for casting the upper part of the ring 21 is enclosed between the positioning clamp 4 and the pier column 101. The end of the shear stud 41 away from the inner sidewall of the positioning clamp 4 extends towards the pier column 101, and a cylindrical limiting block 44 is welded to the end of the shear stud 41 away from the inner sidewall of the positioning clamp 4. Thus, when the shear stud 41 is cast into the reinforcing ring 2, it can restrict the positioning clamp 4 from moving away from the pier column 101, thereby improving the stability of the positioning clamp 4. Optionally, the shear studs 41 can be fixed to the reinforcing cage 22 by means of steel wire or welding, thereby increasing the strength of the positioning clamp 4 fixed to the pier column 101.

[0033] Reference Figure 2 and Figure 5 In this embodiment, a first reinforcing rib 421 is welded to the inner sidewall of the first semi-ring 42. One end of the first reinforcing rib 421 is located inside the first semi-ring 42, and the other end extends out of the first semi-ring 42. A second reinforcing rib 431 is welded to the inner sidewall of the second semi-ring 43. One end of the second reinforcing rib 431 extends out of the second semi-ring 43, and the other end is located inside the second semi-ring 43. Thus, when the first semi-ring 42 and the second semi-ring 43 are fixed together, the end faces of the first reinforcing rib 421 and the second reinforcing rib 431 are welded and fixed, and the contact surfaces of the first reinforcing rib 421 and the second reinforcing rib 431 are offset from the connection surfaces of the first semi-ring 42 and the second semi-ring 43, thereby increasing the stability of the positioning clamp 4 when it is fixed to the outside of the pier column 101. Preferably, the first reinforcing rib 421 and the second reinforcing rib 431 are respectively provided at the upper and lower ends of the positioning clamp 4.

[0034] Reference Figure 4 and Figure 5 In this embodiment, the bracket 5 is fixed to the outer sidewall of the clamp. The bracket 5 includes a first horizontal plate 51 and a second horizontal plate 52 arranged along the horizontal direction, a vertical support plate 53 welded between the first horizontal plate 51 and the second horizontal plate 52, and an inclined support plate 54 welded to the lower surface of the second horizontal plate 52. Specifically, the first horizontal plate 51, the second horizontal plate 52 and the vertical support plate 53 can all be rectangular flat plates and are spliced ​​together to form an "I" shape. The inclined support plate 54 can be a right triangle and its upper surface is fixed to the lower surface of the second horizontal plate 52. The parts of the first horizontal plate 51, the second horizontal plate 52, the vertical support plate 53 and the inclined support plate 54 that abut against the outer sidewall of the positioning clamp 4 are all opened as arc surfaces to increase the contact area with the positioning clamp 4.

[0035] Reference Figure 4 and Figure 5 In this embodiment, the bracket 5 further includes a reinforcing plate 55 fixed to the lower surface of the first horizontal plate 51. The reinforcing plate 55 may also have a rectangular cross-section. The upper surface of the reinforcing plate 55 is welded to the first horizontal plate 51, and one end of its sidewall is welded to the outer sidewall of the clamp. The reinforcing plate 55 is respectively provided on both sides of the vertical support plate 53, thereby supporting the first horizontal plate 51 and improving the stress stability of the first horizontal plate 51. Optionally, a rectangular plate may also be fixed between the first horizontal plate 51 and the second horizontal plate 52. The rectangular plate is perpendicular to the vertical support plate 53 and is located at the end of the first horizontal plate 51 away from the positioning clamp 4.

[0036] In this embodiment, the corbel 5 is divided into left and right parts, which are respectively fixed to the first half-ring 42 and the second half-ring 43 of the clamp, thereby fixing the clamp to the pier 101 through the connector 8, and thus simultaneously fixing the corbel 5 to the pier 101. For example, when the first vertical plates on both sides of the first half-ring 42 and the second vertical plates on both sides of the second half-ring 43 abut against each other, the vertical support plate 53 of the corbel 5 can be spliced. In other embodiments, the corbel 5 can also be fixed to the middle part of the outer sidewall of the first half-ring 42.

[0037] Reference Figure 1 and Figure 3 In this embodiment, corbels 5 are symmetrically arranged on both sides of the pier 101 along the bridge extension direction. Along the river flow direction, the same distribution beam 6 is welded to the corbels 5 on the same side. The cross-section of the distribution beam 6 can be "II" shaped. The upper surface of the distribution beam 6 is used to place jacks to lift the box girder 103. By setting the distribution beam 6, multiple jacks can be conveniently placed along the river flow direction for lifting. At the same time, the pressure on the jacks can be distributed relatively evenly to the positioning clamps 4 through the distribution beam 6.

[0038] The implementation principle of the bridge jacking platform erection component in this application embodiment is as follows: First, a reinforcing bar 1 is fixed on the side wall of the pier 101 and a steel cage 22 is tied. Then, a positioning steel ring 3 and a positioning clamp 4 are fixed. A ring 21 is poured between the positioning steel ring 3, the positioning clamp 4 and the pier 101 to reinforce the pier 101. The positioning clamp 4 is fixed on the outside of the pier 101. A corbel 5 is welded to the outer side wall of the positioning clamp 4. Finally, a distribution beam 6 is welded on the corbel 5 to build a platform for placing jacks. At the same time, an operating platform 7 is welded on the outside of the positioning steel ring 3 to form an operating platform 7 for workers to move around. Thus, the box girder 103 of the bridge can be jacked without damaging the strength of the pier 101.

[0039] Example 2: This application discloses a method for erecting the components of the bridge jacking platform described in the above embodiments, including the following steps: Step 1: Insert one end of the reinforcing bar 1 into the pier 101, and set multiple reinforcing bars along the outer sidewall of the pier 101 at the upper end of the pier 101 to install the reinforcing bars; when installing the reinforcing bars, you can first open a hole on the outer sidewall of the pier 101, then fill the hole with reinforcing bar adhesive, and then insert the reinforcing bar 1 into the hole to fix the reinforcing bar 1 to the pier 101. Step 2: Install a steel cage 22 on the outer side wall of the upper end of the pier 101, and fix the steel cage 22 to the pier 101 with wall nails. Connect the steel cage 22 to the reinforcing bar 1 by welding and binding. Then fix the positioning steel ring 3 on the outside of the steel cage 22. Leave a gap between the upper end of the positioning steel ring 3 and the cap beam 102. Then pour concrete between the positioning steel ring 3 and the pier 101 to form the lower part of the ring 21. That is, fix the positioning steel ring 3 to the outside of the pier 101 and thicken and strengthen the pier 101. Step 3: An operating platform 7 for workers to walk on is constructed by welding on the outer sidewall of the positioning steel ring 3. Specifically, a support is first welded on the outer sidewall of the positioning steel ring 3, and then a support rod 71 is welded on the upper surface of the support. The sidewall of the support rod 71 is simultaneously welded to the sidewall of the positioning steel ring 3. Next, panels 72 are welded on the upper surfaces of both ends of the support. Finally, a rectangular plate can be welded between two adjacent panels 72 to form the operating platform 7. Step 4: First, weld the bracket 5 to the positioning clamp 4. Then, position the clamp 4 on the outside of the pier 101 using tie bolts or other means. Next, connect the first half ring 42 and the second half ring 42 with bolts and nuts. Weld the lower surface of the positioning clamp 4 to the upper surface of the positioning steel ring 3. Weld the two end faces of the first reinforcing rib 421 to the two end faces of the second reinforcing rib 431 respectively, so that the contact surfaces of the first reinforcing rib 421 and the second reinforcing rib 431 are offset from the connection surfaces of the first half ring 42 and the second half ring 43. Then, pour concrete between the positioning clamp 4 and the pier 101 to form the upper part of the ring 21. Fix the positioning clamp 4 to the outside of the pier 101 and provide synchronous support for the positioning clamp 4 through the positioning steel ring 3. Step 5: Weld the distribution beam 6 onto the bracket 5 to form a platform for placing the jack.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A component for erecting a bridge jacking platform, characterized in that: The system includes a reinforcing rib (1) on the pier (101), a reinforcing ring (2) around the pier (101), a positioning steel ring (3) outside the reinforcing ring (2), and a positioning clamp (4) outside the reinforcing ring (2). The lower end face of the positioning clamp (4) abuts against the upper end face of the positioning steel ring (3). The end of the reinforcing rib (1) away from the pier (101) is fixed to the reinforcing ring (2). The system also includes a corbel (5) on the outer sidewall of the positioning clamp (4), a distribution beam (6) on the corbel (5) for placing a jack, and an operating platform (7) on the positioning steel ring (3). The corbels (5) are symmetrically arranged on the outer sidewall of the positioning clamp (4). All corbels (5) located on the same straight line along the direction of river flow form a support group. The upper surfaces of all corbels (5) in a support group abut against the same distribution beam (6). The reinforcing ring (2) includes a ring body (21) and a steel cage (22) embedded in the ring body (21). The end of the reinforcing bar (1) facing away from the pier column (101) is inserted into the ring body (21) and fixed to the steel cage (22). Multiple shear studs (41) are provided on the inner side wall of the positioning clamp (4). One end of the shear stud (41) away from the inner side wall of the positioning clamp (4) is inserted into the reinforcing ring (2). A limit block (44) is provided on one end of the shear stud (41) away from the inner side wall of the positioning clamp (4). The cow leg (5) includes a first horizontal plate (51) and a second horizontal plate (52) that are parallel to each other, a vertical support plate (53) that is vertically arranged between the first horizontal plate (51) and the second horizontal plate (52), and an inclined support plate (54) that is arranged on the lower surface of the second horizontal plate (52). The side of the first horizontal plate (51), the second horizontal plate (52), the vertical support plate (53) and the inclined support plate (54) facing the positioning clamp (4) are all arc surfaces corresponding to the outer sidewall of the positioning clamp (4).

2. The erection components of a bridge jacking platform according to claim 1, characterized in that: The positioning clamp (4) includes a first half-ring (42) and a second half-ring (43), and a connector (8) for fixing the first half-ring (42) and the second half-ring (43).

3. The erection components of a bridge jacking platform according to claim 2, characterized in that: The first half-ring (42) has a first vertical plate on both sides, and the second half-ring (43) has a second vertical plate on both sides. The first vertical plate and the second vertical plate are connected by the connector (8) to form the vertical support plate (53).

4. The erection components of a bridge jacking platform according to claim 3, characterized in that: A first reinforcing rib (421) is provided on the inner side wall of the first half ring (42), and a second reinforcing rib (431) is provided on the inner side wall of the second half ring (43). When the first half ring (42) and the second half ring (43) are fixed together, the end faces of the first reinforcing rib (421) and the second reinforcing rib (431) are fixed together, and the contact surfaces of the first reinforcing rib (421) and the second reinforcing rib (431) are offset from the connecting surfaces of the first half ring (42) and the second half ring (43).

5. The erection component of a bridge jacking platform according to claim 4, characterized in that: The cow leg (5) also includes a reinforcing plate (55) disposed on the lower surface of the first horizontal plate (51). The side wall of the reinforcing plate (55) is fixed to the side wall of the positioning clamp (4). The reinforcing plate (55) is symmetrically disposed on the first horizontal plate (51) with the vertical support plate (53) as the symmetrical face.

6. The erection components of a bridge jacking platform according to claim 2, characterized in that: The operating platform (7) includes a plurality of parallel support rods (71) and a panel (72) disposed on the support rods (71). The support rods (71) and the positioning steel ring (3) are symmetrically disposed on their side walls. The panel (72) and the support rods (71) are disposed at their respective ends.

7. A method for erecting components including the bridge jacking platform as described in any one of claims 4 or 5, characterized in that: Includes the following steps: Step 1: Insert one end of the reinforcing bar (1) into the pier (101), and set multiple reinforcing bars along the outer sidewall of the pier (101) at the upper end of the pier (101) to install the reinforcing bars in the pier (101); Step 2: Install the steel cage (22) on the outer side wall of the upper end of the pier (101), fix the positioning steel ring (3) on the outside of the steel cage (22), leave a gap between the upper end of the positioning steel ring (3) and the cap beam (102), then pour concrete between the positioning steel ring (3) and the pier (101) to form the lower part of the ring (21), fix the positioning steel ring (3) on the outside of the pier (101), and thicken and strengthen the pier (101); Step 3: The operating platform (7) for workers to walk on is constructed by welding on the outer side wall of the positioning steel ring (3). Step 4: First, weld the bracket (5) to the positioning clamp (4), then set the positioning clamp (4) on the outside of the pier (101). The lower surface of the positioning clamp (4) is welded to the upper surface of the positioning steel ring (3). The two ends of the first reinforcing rib (421) are welded to the two ends of the second reinforcing rib (431). Then, pour concrete between the positioning clamp (4) and the pier (101) to form the upper part of the ring (21). Fix the positioning clamp (4) to the outside of the pier (101) and provide synchronous support for the positioning clamp (4) through the positioning steel ring (3). Step 5: Weld the distribution beam (6) onto the bracket (5) to form a platform for placing the jack. During welding, the brackets (5) located on the same side of the river flow direction are all welded to the same distribution beam (6).

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