A reinforcing device for incremental launching construction of a long-span steel truss bridge

Abstract

The application relates to a reinforcing device for pushing construction of a large-span steel truss bridge, which comprises a bridge pier and a plurality of steel columns arranged outside the bridge pier, and further comprises a plurality of annular connecting plates and an annular driving plate, the annular connecting plates are slidably sleeved outside the plurality of steel columns, the annular connecting plates are provided with fixing assemblies and connecting assemblies, the fixing assemblies are used for fixing the annular connecting plates to the steel columns, and the connecting assemblies are used for fixing the annular connecting plates to the bridge pier; the annular driving plate is slidably sleeved on the plurality of steel columns and located below the plurality of annular connecting plates, and the annular driving plate is provided with a driving assembly used for driving the annular driving plate to move along the steel columns. The application has the effect of improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a reinforcement device for the jacking construction of a long-span steel truss bridge. Background Technology

[0002] With the development of the national economy and the continuous improvement of people's living standards, the demand for fast and safe transportation is increasing. High-speed trains, with their safety, speed, and convenience, are receiving more and more attention from countries around the world, and a large number of high-speed railway bridges urgently need to be built. The incremental launching construction method for large-span steel truss bridges is a commonly used bridge construction method. Its construction principle involves setting up segmented assembly yards along the longitudinal axis of the bridge, assembling the beams segment by segment, lifting the beams using the vertical support force of the launching device, and then pushing the beams forward using the horizontal thrust of the launching device, pushing the beams forward the maximum single-pushing distance of the launching device. This repeated pushing motion pushes the heavy-tonnage steel beams to the installation position for installation.

[0003] A utility model patent with authorization announcement number CN217438744U discloses a pier reinforcement device for the jacking construction of a three-main-truss steel truss bridge. Specifically, it discloses a steel column for the middle pier located outside the middle pier, a connecting component at the bottom of the middle pier, multiple steel columns for the side piers located outside the side piers, longitudinal connecting components for the side pier steel columns, and transverse connecting components for the side pier steel columns. Crossbeams and V-shaped beams are welded between the multiple middle pier steel columns and between the multiple side pier steel columns.

[0004] Regarding the aforementioned technologies, when installing reinforcement devices, multiple crossbeams and V-shaped beams need to be welded between multiple central pier steel columns and multiple side pier steel columns for reinforcement. However, since the piers are quite high, scaffolding also needs to be erected during installation. Operators then use the scaffolding to perform high-altitude welding operations along the height of the piers, resulting in low construction efficiency. Summary of the Invention

[0005] To improve construction efficiency, this application provides a reinforcement device for the jacking construction of large-span steel truss bridges.

[0006] The reinforcement device for the jacking construction of a long-span steel truss bridge provided in this application adopts the following technical solution:

[0007] A reinforcement device for the jacking construction of a long-span steel truss bridge includes a pier and multiple steel columns installed outside the pier. It also includes annular connecting plates and annular driving plates. Multiple annular connecting plates are slidably sleeved on the outside of the steel columns. The annular connecting plates are equipped with fixing components and connecting components. The fixing components are used to fix the annular connecting plates to the steel columns, and the connecting components are used to fix the annular connecting plates to the pier. The annular driving plates are slidably sleeved on the multiple steel columns and located below the multiple annular connecting plates. The annular driving plates are equipped with driving components for driving the annular driving plates to move along the direction of the steel columns.

[0008] Preferably, both the annular connecting plate and the annular driving plate are composed of two semi-annular plates spliced ​​together.

[0009] Preferably, the fixing component includes clamping cylinders, and multiple clamping cylinders are arranged in the annular connecting plate, with each of the multiple clamping cylinders corresponding to a multiple steel columns.

[0010] Preferably, the connecting assembly includes telescopic cylinders and clamping plates. Multiple telescopic cylinders are provided on the inner wall of the annular connecting plate, and clamping plates are provided on the piston rods of multiple telescopic cylinders. The clamping plates are arc-shaped plates parallel to the outer wall of the pier.

[0011] Preferably, the driving assembly includes a driving slider, a locking component, a fixing component, and a moving component. Multiple moving slots are formed around the annular driving plate opposite to the multiple steel columns. The driving slider slides within the moving slots, with one side of the driving slider conforming to the outer wall of the steel column and the other side conforming to the inner wall of the moving slot. The locking component is disposed on the driving slider and used to fix the slider to the steel column. The fixing component is used to fix the annular driving plate to the steel column. The moving component is disposed on the annular driving plate and connected to the driving slider. The driving component is used to drive the driving slider to move within the moving slot.

[0012] Preferably, the locking element includes a wedge block and a compression spring. A wedge groove is provided on the inner side of the drive slider. The distance between the upper bottom wall of the wedge groove and the steel column is less than the distance between the lower bottom wall of the wedge groove and the steel column. The wedge block is slidably disposed in the wedge groove. The compression spring is disposed on the lower side wall of the wedge groove and connected to the wedge block. The compression spring causes the wedge block to always have a tendency to move upward along the wedge groove.

[0013] Preferably, an electromagnet is provided on the top sidewall of the wedge-shaped groove, and a magnet is embedded in the wedge-shaped block.

[0014] Preferably, the fixing component includes a fixing cylinder and a fixing plate. The fixing cylinder is disposed inside the annular drive plate and on both sides of the steel column. The fixing plate is disposed at the end of the piston rod of the fixing cylinder.

[0015] Preferably, the moving component includes a lifting cylinder, which is disposed within an annular drive plate, and the piston rod of the lifting cylinder extends downward and is connected to the drive slider.

[0016] Preferably, a diagonal bracing reinforcement rod is provided outside the annular connecting plate located at the lower end of the steel column.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. During the jacking construction of a long-span steel truss bridge, steel columns are installed outside the piers. A drive assembly drives a ring drive plate to move upwards, which in turn drives multiple ring connecting plates on it to rise. When the steel column is raised to the top, the fixing and connecting components on the uppermost ring connecting plate are activated, fixing the ring connecting plate to the steel column and connecting it to the pier. Then, the ring drive plate is driven to descend, and multiple ring connecting plates are sequentially fixed to the steel column and the outside of the pier. This connects multiple steel columns through multiple ring connecting plates, and at the same time, multiple ring connecting plates are connected to the pier, thus forming a pier reinforcement device through the steel columns and ring connecting plates.

[0019] 2. This reinforcement device eliminates the need for operators to erect scaffolding for welding and processing, improving construction efficiency and reducing safety risks during construction. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the annular connecting plate structure in an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the ring drive board structure in an embodiment of this application.

[0023] Figure 4 along Figure 3 A sectional view taken by AA.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Bridge pier; 2. Steel column; 21. Diagonal bracing reinforcement rod; 3. Annular connecting plate; 4. Annular drive plate; 41. Moving groove; 51. Telescopic cylinder; 52. Clamping plate; 6. Drive slider; 61. Wedge groove; 7. Locking component; 71. Wedge block; 72. Compression spring; 73. Electromagnet; 8. Fixing component; 81. Fixing cylinder; 82. Fixing plate; 9. Moving component; 91. Lifting cylinder. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a reinforcement device for the jacking construction of a long-span steel truss bridge, referring to... Figure 1 A reinforcement device for the jacking construction of a long-span steel truss bridge includes a pier 1 and multiple steel columns 2 installed outside the pier 1. The steel columns 2 extend parallel to the length of the pier 1 and are fixed to the bottom bearing platform of the pier 1 by drilling and concrete pouring. The reinforcement device also includes annular connecting plates 3 and annular driving plates 4. Multiple annular connecting plates 3 are slidably fitted around the steel columns 2, and are evenly spaced on the steel columns 2, connecting the steel columns 2 into a whole. Fixing components and connecting components are provided on the annular connecting plates 3. The fixing components connect to the steel columns 2 that pass through the annular connecting plates 3 and are used to fix the annular connecting plates 3 to the steel columns 2. The connecting components connect to the pier 1 inside the annular connecting plates 3 and are used to fix the annular connecting plates 3 to the pier 1. The annular driving plates 4 are also slidably fitted on the steel columns 2 and are located below the annular connecting plates 3. A drive assembly is provided on the annular drive plate 4 to drive the annular drive plate 4 to move along the direction of the steel column 2. When the annular drive plate 4 moves vertically on the steel column 2, it drives the annular connecting plate 3 on it to move along the length direction of the steel column 2.

[0028] It should be noted that the annular connecting plate 3 and the annular driving plate 4 need to be placed outside the pier 1 before the steel column 2 is installed. When installing the steel column 2, the steel column 2 is inserted into the pier 1 after passing through multiple annular connecting plates 3 and annular driving plates 4.

[0029] During the jacking construction of a long-span steel truss bridge, steel columns 2 are installed outside piers 1. A drive assembly drives an annular drive plate 4 upwards, which in turn lifts multiple annular connecting plates 3. When the plates reach the top of the steel columns 2, the fixing and connecting components on the uppermost annular connecting plate 3 activate, fixing the annular connecting plate 3 to the steel columns 2 and connecting it to the pier 1. The drive assembly then lowers the annular drive plate 4, sequentially fixing the multiple annular connecting plates 3 to the steel columns 2 and the pier 1. This connects multiple steel columns 2 via multiple annular connecting plates 3, and simultaneously connects the annular connecting plates 3 to the pier 1, thus forming a layered pier 1 reinforcement device. This reinforcement device eliminates the need for scaffolding for welding, improving construction efficiency and reducing safety risks during construction.

[0030] Reference Figure 2 and Figure 3Both the annular connecting plate 3 and the annular driving plate 4 are made of two semi-annular plates spliced ​​together, and the splice is detachably connected by countersunk bolts, so that the annular connecting plate 3 and the annular driving plate 4 can be fitted onto the outside of the pier 1.

[0031] Reference Figure 2 The fixing components include clamping cylinders (not shown in the figure). Multiple through holes are provided on the annular connecting plate 3 for the steel columns 2 to pass through. Clamping cylinders are located inside the annular connecting plate 3 at each of the through holes. By opening and closing the clamping cylinders, the steel columns 2 passing through the annular connecting plate 3 are clamped and fixed, thus facilitating the fixing of the annular connecting plate 3 to the steel columns 2. The connecting components include telescopic cylinders 51 and clamping plates 52. Multiple telescopic cylinders 51 are provided on the inner side of the annular connecting plate 3, with the piston rods of the multiple telescopic cylinders 51 extending towards the axis of the annular connecting plate 3. Clamping plates 52 are provided at the ends of the piston rods of the multiple telescopic cylinders 51, and the clamping plates 52 are arc-shaped plates parallel to the outer wall of the pier 1. When the telescopic cylinder 51 is activated, the arc-shaped plate is moved by extending or retracting the piston rod of the telescopic cylinder 51. When multiple telescopic cylinders 51 drive the clamping plate 52 to press against the pier 1, the annular connecting plate 3 and the pier 1 are fixedly connected.

[0032] Reference Figure 3 and Figure 4 The driving assembly includes a driving slider 6, a locking element 7, a fixing element 8, and a moving element 9. The annular driving plate 4 also has multiple through holes for the steel column 2 to pass through. Multiple moving grooves 41 are formed around the annular driving plate 4, opposite to the through holes, and are connected to the through holes. The driving slider 6 is an annular plate body and is slidably disposed within the moving grooves 41. One side of the driving slider 6 is in contact with the outer wall of the steel column 2, and the other side is in contact with the inner wall of the moving groove 41. The locking element 7 is disposed on the driving slider 6 and connected to the steel column 2, and is used to fix the slider to the steel column 2. The fixing element 8 is disposed on the annular driving plate 4 and connected to the steel column 2, and is used to fix the annular driving plate 4 to the steel column 2. The moving element 9 is disposed on the annular driving plate 4 and connected to the driving slider 6, and is used to drive the driving slider 6 to move vertically within the moving grooves 41.

[0033] When the driving ring drive plate 4 moves on the steel column 2, the driving component drives the driving slider 6 to move to the upper end of the moving groove 41. The driving slider 6 is fixedly connected to the steel column 2 by the locking component 7. Then, the driving component drives the driving slider 6 to move towards the lower end of the moving groove 41. At this time, the ring drive plate 4 rises under the action of the reaction force. Then, the fixing component 8 fixes the ring drive plate 4 to the steel column 2. The driving component drives the driving slider 6 to move towards the upper end of the moving groove 41. Repeat the above process to gradually lift the ring drive plate 4, so as to achieve the effect of driving the ring drive plate 4 to move on the steel column 2.

[0034] Reference Figure 4 The locking element 7 includes a wedge block 71 and a compression spring 72. A wedge groove 61 is formed on the inner side of the drive slider 6. The distance between the upper bottom wall of the wedge groove 61 and the steel column 2 is less than the distance between the lower bottom wall of the wedge groove 61 and the steel column 2, that is, the upper end of the wedge groove 61 is shallow and the lower end is deep. The wedge block 71 is located in the wedge groove 61 and is slidably disposed in the wedge groove 61. One side of the wedge block 71 is parallel to the outer wall of the steel column 2, and the other side of the wedge block 71 is parallel to the inclined bottom wall of the wedge groove 61. The compression spring 72 is disposed on the lower side wall of the wedge groove 61, and the other end of the compression spring 72 extends upward and is fixedly connected to the lower bottom of the wedge block 71. The compression spring 72 makes the wedge block 71 always have a tendency to move upward along the wedge groove 61. An electromagnet 73 is provided on the top side wall of the wedge-shaped groove 61, and a magnet block (not shown in the figure) is embedded inside the wedge-shaped block 71. When the electromagnet 73 is activated, the electromagnet 73 and the magnet block repel each other.

[0035] When the drive slider 6 moves upward, the wedge block 71 moves downward along the wedge groove 61 under the action of friction, allowing the drive slider 6 to rise freely. After the drive slider 6 is in position, the drive slider 6 and the annular drive plate 4 tend to move downward under the action of gravity, while the wedge block 71 tends to move upward relative to the drive slider 6 under the action of friction. Thus, the wedge block 71 presses against the outside of the steel column 2, thereby fixing the drive slider 6 to the steel column 2. At this time, the drive slider 6 moves upward, causing the wedge block 71 to no longer clamp the steel column 2. Then, the electromagnet 73 is activated, driving the wedge block 71 downward and disengaging it from the steel column 2, allowing the drive slider 6 to move downward. Therefore, the drive slider 6 can achieve self-locking during its upward movement, facilitating its fixation to the steel column 2.

[0036] Reference Figure 4 The fixing component 8 includes a fixing cylinder 81 and a fixing plate 82. The fixing cylinders 81 are arranged opposite each other on both sides of the steel column 2 within the annular drive plate 4. The piston rods of the two opposing fixing cylinders 81 extend relative to each other. The fixing plate 82 is located at the end of the piston rod of the fixing cylinder 81, and the opposite sides of the two fixing plates 82 are in contact with the steel column 2. When the annular drive plate 4 is fixed to the steel column 2, the two fixing cylinders 81 are simultaneously activated, driving the two fixing plates 82 to move closer together, thereby clamping the steel column 2 and achieving the effect of clamping the annular drive plate 4 to the steel column 2.

[0037] Reference Figure 4The moving component 9 includes a lifting cylinder 91, which is embedded in the annular drive plate 4 and located above the moving groove 41. The piston rod of the lifting cylinder 91 extends downward into the moving groove 41 and is connected to the drive slider 6. Driving the piston rod of the lifting cylinder 91 to extend or retract causes the drive slider 6 to move, thus facilitating the driving of the drive slider 6.

[0038] Reference Figure 1 A diagonal bracing rod 21 is connected and installed on the annular connecting plate 3 at the lower end of the steel column 2 to reinforce the overall reinforcement structure and improve the structural stability of the overall reinforcement structure.

[0039] The implementation principle of the reinforcement device for the jacking construction of a large-span steel truss bridge according to an embodiment of this application is as follows: During the jacking construction of a large-span steel truss bridge, steel columns 2 are installed outside the pier 1. The driving assembly drives the annular driving plate 4 to move upward. The annular driving plate 4 drives multiple annular connecting plates 3 on it to rise. When it rises to the top of the steel column 2, the fixing assembly and connecting assembly on the uppermost annular connecting plate 3 are activated, fixing the annular connecting plate 3 to the steel column 2 and fixing it to the pier 1. Then, the annular driving plate 4 is driven to descend, and the multiple annular connecting plates 3 are sequentially fixed to the steel column 2 and the outside of the pier 1. Thus, multiple steel columns 2 are connected by multiple annular connecting plates 3, and multiple annular connecting plates 3 are connected to the pier 1. In this way, the steel columns 2 and annular connecting plates 3 form a layered reinforcement device for the pier 1. At the same time, this reinforcement device eliminates the need for operators to erect scaffolding for welding, improving construction efficiency and reducing safety risks during construction.

[0040] Finally, it should be noted that in the description of this application, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] 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 reinforcement device for the jacking construction of a long-span steel truss bridge, comprising a pier (1) and multiple steel columns (2) installed outside the pier (1), characterized in that: It also includes an annular connecting plate (3) and an annular driving plate (4). Multiple annular connecting plates (3) are slidably sleeved on the outside of multiple steel columns (2). The annular connecting plate (3) is provided with a fixing component and a connecting component. The fixing component is used to fix the annular connecting plate (3) to the steel column (2), and the connecting component is used to fix the annular connecting plate (3) to the pier (1). The annular driving plate (4) is slidably sleeved on multiple steel columns (2) and located below multiple annular connecting plates (3). The annular driving plate (4) is provided with a driving component for driving the annular driving plate (4) to move along the direction of the steel column (2). The driving assembly includes a driving slider (6), a locking member (7), a fixing member (8), and a moving member (9). The annular driving plate (4) has multiple moving slots (41) that are arranged around the multiple steel columns (2). The driving slider (6) is slidably arranged in the moving slots (41). One side of the driving slider (6) is in contact with the outer wall of the steel column (2), and the other side is in contact with the inner wall of the moving slot (41). The locking member (7) is arranged on the driving slider (6) and is used to fix the slider to the steel column (2). The fixing member (8) is used to fix the annular driving plate (4) to the steel column (2). The moving member (9) is arranged on the annular driving plate (4) and is connected to the driving slider (6). The moving member (9) is used to drive the driving slider (6) to move in the moving slots (41). The locking component (7) includes a wedge block (71) and a compression spring (72). The drive slider (6) has a wedge groove (61) on its inner side. The distance between the bottom wall of the upper end of the wedge groove (61) and the steel column (2) is less than the distance between the bottom wall of the lower end of the wedge groove (61) and the steel column (2). The wedge block (71) is slidably disposed in the wedge groove (61). The compression spring (72) is disposed on the lower side wall of the wedge groove (61) and connected to the wedge block (71). The compression spring (72) makes the wedge block (71) always have the tendency to move upward along the wedge groove (61).

2. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: Both the annular connecting plate (3) and the annular driving plate (4) are composed of two semi-annular plates spliced ​​together.

3. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: The fixing component includes clamping cylinders, and multiple clamping cylinders are provided in the annular connecting plate (3), with each clamping cylinder corresponding to a multiple steel column (2).

4. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: The connecting assembly includes a telescopic cylinder (51) and a clamping plate (52). Multiple telescopic cylinders (51) are provided on the inner wall of the annular connecting plate (3). The clamping plate (52) is provided on the piston rod of multiple telescopic cylinders (51). The clamping plate (52) is an arc-shaped plate parallel to the outer wall of the pier (1).

5. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: An electromagnet (73) is provided on the top side wall of the wedge-shaped groove (61), and a magnet is embedded in the wedge-shaped block (71).

6. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: The fixing component (8) includes a fixing cylinder (81) and a fixing plate (82). The fixing cylinder (81) is arranged in the annular drive plate (4) and on both sides of the steel column (2). The fixing plate (82) is located at the end of the piston rod of the fixing cylinder (81).

7. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: The moving part (9) includes a lifting cylinder (91), which is disposed inside the annular drive plate (4), and the piston rod of the lifting cylinder (91) extends downward and is connected to the drive slider (6).

8. The reinforcement device for jacking construction of a large-span steel truss bridge according to claim 1, characterized in that: A diagonal bracing rod (21) is provided outside the annular connecting plate (3) located at the lower end of the steel column (2).

Images