A tower beam longitudinal bridge spacing adjusting device and closure adjusting method

Abstract

This application relates to an adjustment device and method for adjusting the longitudinal spacing between the tower and beam in a bridge, belonging to the field of bridge construction technology. The adjustment device includes a spacing adjustment component disposed between the main steel beam and the tower column crossbeam, used to drive the main steel beam to move towards the side span or middle span. The spacing adjustment component includes a first connecting component, a driving component connected to the first connecting component, and a second connecting component connected to the driving component. The first connecting component is connected to the tower column crossbeam, and the second connecting component is connected to the main steel beam. The driving component can move along the longitudinal direction of the main steel beam. The driving component of the spacing adjustment component can be used to drive the two main steel beams to move, thereby adjusting the closure joint size and facilitating the closure work.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to an adjustment device and a closure adjustment method for the longitudinal spacing between towers and beams in a bridge. Background Technology

[0002] The main steel beams of long-span steel truss, steel box girder, and composite beam cable-stayed bridges are generally constructed using a segmental cantilever erection method. During the cantilever erection stage, due to the imbalance of horizontal components of the stay cables on both sides of the side and middle spans, the non-symmetry of the main steel beam structures on both sides of the side and middle spans, and the influence of wind loads, temperature loads, and temporary loads during cantilever construction, the main steel beams will experience longitudinal bridge offset, resulting in a discrepancy between the actual spacing and the preset spacing between the main steel beams. During the mid-span closure stage of the main steel beams, since the spacing between the main steel beams cannot be adjusted, the reserved positions often cannot meet the requirements for closure. For example, if the reserved positions are too narrow, they may collide with the original main steel beams or cause other adverse situations during closure, which is not conducive to the closure work. Summary of the Invention

[0003] This application provides a device for adjusting the longitudinal spacing of the tower-beam bridge and a method for adjusting the closure distance, in order to solve the problem in related technologies that the spacing of the main steel beams cannot be adjusted during the mid-span closure, which is not conducive to the closure work.

[0004] Firstly, a device for adjusting the longitudinal spacing of a tower-beam bridge is provided, comprising:

[0005] A spacing adjustment component is disposed between the steel main beam and the tower column crossbeam, and is used to drive the steel main beam to move in the direction of the side span or the middle span;

[0006] The spacing adjustment assembly includes a first connecting component, a driving component connected to the first connecting component, and a second connecting component connected to the driving component. The first connecting component is connected to the tower column crossbeam, and the second connecting component is connected to the steel main beam. The driving component can move along the longitudinal direction of the steel main beam.

[0007] In some embodiments, the first connecting component includes a first connecting seat disposed on the tower column beam and a pad stone disposed at the lower end of the first connecting seat, and the second connecting component includes a second connecting seat connected to the bottom end of the steel main beam.

[0008] In some embodiments, the drive member includes a connecting rod and a push box connected to one end of the connecting rod near the first connecting seat.

[0009] In some embodiments, the push box is a hollow structure, the connecting rod is hinged to the push box via a first pin, and the end of the connecting rod near the steel main beam is hinged to the second connecting seat via a third pin.

[0010] In some embodiments, the push box and the first connecting seat are hinged by a second pin.

[0011] In some embodiments, a limiting element is provided inside the push box to limit the movement of the connecting rod.

[0012] In some embodiments, the limiting member is a pad.

[0013] In some embodiments, multiple pads are provided, and the pads are steel plates.

[0014] In some embodiments, a jack is provided inside the push box.

[0015] Secondly, a closure adjustment method is provided, which is implemented using the aforementioned tower-beam longitudinal bridge spacing adjustment device, including the following steps:

[0016] When erecting the steel main beam segment above the main tower crossbeam, a spacing adjustment assembly is set up. The connecting rod and the second connecting seat are hinged together using the first connecting seat and the second connecting seat, and the jacking box and the first connecting seat are hinged together. The jacking box and the connecting rod are hinged together by the first pin. A limiting pad is set in the jacking box to achieve the purpose of longitudinal limiting constraint during the cantilever erection of the steel main beam. A total of four spacing adjustment assemblies are set on the two tower column crossbeams on the upstream and downstream sides of the side span and the upstream and downstream sides of the middle span.

[0017] Before the mid-span closure segment is fed into the closure opening, the pads in the two jacking boxes on the side span are removed, and adjusting jacks are installed in the two jacking boxes on the side span. Then, the first pins on the side and mid-span sides are removed, and the two jacks in the jacking boxes on the side span are simultaneously pressurized and pushed a certain distance towards the side span and locked. The pads of the corresponding thickness are removed from the two jacking boxes on the mid-span side, and the steel main beam is adjusted and shifted towards the side span to increase the size of the mid-span closure opening.

[0018] After the mid-span closure segment is fed into the closure opening, the jacks in the side-span jacking box are appropriately returned to oil and locked, so as to remove the padding limiting plate in the mid-span jacking box. The adjusting jack is placed in the mid-span jacking box and locked. The jacks in the side-span jacking box are removed after returning to oil. The two jacks in the mid-span jacking box are simultaneously pressurized and pushed towards the mid-span side a certain distance. The padding plates of the corresponding thickness are removed from the two jacking boxes on the side-span side. The steel main beam is adjusted and shifted towards the mid-span side, and the size of the mid-span closure opening is reduced.

[0019] After the midspan is officially closed, the jacks in the jacking box are drained of oil and then removed. Next, the lifting pads are removed, and finally the connecting rods and jacking box are removed. The formal damper is then installed to complete the structural system conversion.

[0020] The beneficial effects of the technical solution provided in this application include:

[0021] This application provides an adjustment device and a closure adjustment method for the longitudinal spacing of the tower and beam in a bridge. The adjustment device includes a spacing adjustment component disposed between the main steel beam and the tower column crossbeam, used to drive the main steel beam to move towards the side span or middle span. The spacing adjustment component includes a first connecting component, a driving component connected to the first connecting component, and a second connecting component connected to the driving component. The first connecting component is connected to the tower column crossbeam, and the second connecting component is connected to the main steel beam. The driving component can move along the longitudinal direction of the main steel beam.

[0022] When closure is required, if the distance between the two main steel beams is too small, which will adversely affect the closure work, the drive component of the spacing adjustment component can be used to drive the two main steel beams to move relative to each other, thereby increasing the size of the closure opening and facilitating the closure work. After the mid-span closure segment is fed into the closure opening, the spacing adjustment component can be used to drive the two main steel beams to move towards each other, reducing the size of the mid-span closure opening, so as to complete the entire closure work. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A front view of the device provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram illustrating the use of the device provided in the embodiments of this application;

[0026] Figure 3 for Figure 1 Top view;

[0027] Figure 4 for Figure 1 Main view of the device with the jack installed;

[0028] Figure 5 for Figure 4 Top view;

[0029] Figure 6 for Figure 1 Schematic diagram of the middle limiting component;

[0030] Figure 7 for Figure 4 A schematic diagram of the central jack.

[0031] Figure label:

[0032] 1. First pin; 2. Connecting rod; 4. Push box; 5. First connecting seat; 6. Second connecting seat; 7. Jack; 8. Limiting component; 9. Pad stone; 10. Steel main beam; 11. Tower column crossbeam; 31. Second pin; 32. Third pin. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] This application provides a device for adjusting the longitudinal spacing of the tower-beam bridge and a method for adjusting the closure distance, which can solve the problem in related technologies that the spacing of the main steel beams cannot be adjusted during the mid-span closure, which is not conducive to the closure work.

[0035] See Figures 1 to 4 As shown, in one aspect, this application provides a device for adjusting the longitudinal spacing of the tower beam, including: a spacing adjustment component, which is disposed between the steel main beam 10 and the tower column crossbeam 11, for driving the steel main beam 10 to move in the direction of the side span or the middle span; the spacing adjustment component includes a first connecting component, a driving component connected to the first connecting component, and a second connecting component connected to the driving component, the first connecting component being connected to the tower column crossbeam 11, the second connecting component being connected to the steel main beam 10, and the driving component being able to move along the longitudinal direction of the steel main beam 10.

[0036] When closure is required, if the distance between the two main steel beams 10 is too small, which will adversely affect the closure work, the drive component of the spacing adjustment component can be used to drive the two main steel beams 10 to move relative to each other, thereby increasing the size of the closure opening and facilitating the closure work. After the mid-span closure segment is fed into the closure opening, the spacing adjustment component can be used to drive the two main steel beams 10 to move towards each other, reducing the size of the mid-span closure opening, so as to complete the entire closure work.

[0037] In some alternative embodiments, see Figures 3 to 7 As shown in the figure, this application embodiment provides a device for adjusting the longitudinal spacing of a tower-beam bridge. The first connecting component includes a first connecting seat 5 disposed on the tower column crossbeam 11 and a pad stone 9 disposed at the lower end of the first connecting seat 5. The second connecting component includes a second connecting seat 6 connected to the bottom end of the steel main beam 10. Both the first connecting seat 5 and the second connecting seat 6 can be damper connectors, which, while serving as connecting parts, facilitate the subsequent installation of the formal damper to complete the structural system conversion.

[0038] In some applications, the drive unit includes a connecting rod 2 and a pusher box 4 connected to the end of the connecting rod 2 near the first connecting seat 5. The pusher box 4 is a hollow structure. The connecting rod 2 is hinged to the pusher box 4 via a first pin 1, and the end of the connecting rod 2 near the steel main beam 10 is hinged to the second connecting seat 6 via a third pin 32. The pusher box 4 and the first connecting seat 5 are hinged to each other via a second pin 31.

[0039] like Figure 2 As shown, when closure is required, in order to increase the size of the closure opening, the side span can be... Figure 2 The two outermost connecting members 2 are slid towards the side span, causing the two main steel beams 10 to move away from each other. After the mid-span closure segment is fed into the closure opening, the two connecting members 2 on the side span are slid towards the mid-span side, i.e., the mid-span side... Figure 2 The two connecting rods 2 in the middle slide towards the middle span side, causing the two main steel beams 10 to move towards each other, so as to reduce the size of the closure opening on the middle span side and make the closure section and the two main steel beams 10 form a tight whole.

[0040] Specifically, a limiting component 8 is provided inside the jacking box 4 to limit the movement of the connecting rod 2. In use, the limiting component 8 is a lifting plate. Multiple lifting plates are provided, and each lifting plate is made of steel. A jack 7 is provided inside the jacking box 4. The lifting plates provide a limit for the connecting rod 2, preventing it from sliding within the jacking box 4. The jack 7 inside the jacking box 4 allows the connecting rod 2 to be pushed, causing it to extend and thus moving the main steel beam 10.

[0041] See Figures 2 to 5 As shown, on the other hand, this application embodiment provides a closure adjustment method, implemented using the aforementioned tower-beam longitudinal bridge spacing adjustment device, including the following steps:

[0042] S1. When erecting the steel main beam 10 segment above the main tower crossbeam, a spacing adjustment component is set up. The connecting rod 2 and the second connecting seat 6 are hinged together using the first connecting seat 5 and the second connecting seat 6. The jacking box 4 and the first connecting seat 5 are hinged together. The jacking box 4 and the connecting rod 2 are hinged together through the first pin 1. A limiting component 8 and a pad are set in the jacking box 4 to achieve the purpose of longitudinal limiting constraint in the cantilever erection of the steel main beam 10 stage. A total of four spacing adjustment components are set on the two tower column crossbeams 11 on the upstream and downstream sides of the side span and the upstream and downstream sides of the middle span.

[0043] S2. Before the mid-span closure segment is fed into the closure opening, remove the pads from the two jacking boxes 4 on the side span, and set the adjusting jacks 7 in the two jacking boxes 4 on the side span. Then remove the first pins 1 on the side and mid-span sides. The two jacks 7 in the jacking boxes 4 on the side span side are simultaneously pressurized and pushed to the side span side a certain distance and locked. Remove the pads of the corresponding thickness from the two jacking boxes 4 on the mid-span side, adjust and shift the steel main beam 10 to the side span side, and increase the size of the mid-span closure opening.

[0044] S3. After the mid-span closure segment is fed into the closure opening, the jacks 7 in the side-span jacking box 4 are appropriately returned to oil and locked, so as to remove the limiting piece 8 and the pad plate in the mid-span jacking box 4. The adjusting jacks 7 are placed in the mid-span jacking box 4 and locked. The jacks 7 in the side-span jacking box 4 are removed after returning to oil. The two jacks 7 in the mid-span jacking box 4 are simultaneously pressurized and pushed towards the mid-span side a certain distance. The pad plates of the corresponding thickness are removed from the two jacking boxes 4 on the side-span side. The steel main beam 10 is adjusted and shifted towards the mid-span side to reduce the size of the mid-span closure opening.

[0045] S4. After the middle span is officially closed, the jacks 7 in the jacking box 4 are removed after the oil is returned, the pads are then removed, and finally the connecting rods 2 and the jacking box 4 are removed. The formal damper is then installed to complete the structural system conversion.

[0046] Furthermore, in step two, the thickness of the limiting component 8 inside the mid-span side jacking box 4 can be adjusted according to the longitudinal dimension requirements of the mid-span closure opening, so as to feed the closure segment into the mid-span closure opening; in step three, the thickness of the padding limiting plate inside the side-span side jacking box 4 can be adjusted according to the connection and closure requirements of the mid-span closure segment, so as to achieve the purpose of locking the mid-span closure.

[0047] Furthermore, when it is necessary to adjust the axial position of the mid-span closure joint, the axial position is adjusted by anti-symmetrically arranging adjusting jacks 7 and shim limiting plates in the upstream and downstream jacking boxes 4. The adjusting jack 7 in one jacking box 4 on the upstream mid-span side is pressurized and pushed a certain distance towards the mid-span side, while the shim limiting plate of corresponding thickness is removed in one jacking box 4 on the upstream side span side. Similarly, the adjusting jack 7 in one jacking box 4 on the downstream side span side is pressurized and pushed a certain distance towards the side span side, while the shim limiting plate of corresponding thickness is removed in one jacking box 4 on the downstream mid-span side. This achieves the purpose of adjusting the main beam axial position from the mid-span cantilever end to the downstream side.

[0048] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for adjusting closure, characterized in that, The method utilizes a tower-beam longitudinal spacing adjustment device for construction. This tower-beam longitudinal spacing adjustment device includes: A spacing adjustment component is disposed between the main steel beam (10) and the tower column crossbeam (11) for driving the main steel beam (10) to move in the direction of the side span or the middle span. The spacing adjustment component includes a first connecting component, a driving component connected to the first connecting component, and a second connecting component connected to the driving component. The first connecting component is connected to the tower column crossbeam (11), and the second connecting component is connected to the main steel beam (10). The driving component can move along the longitudinal direction of the main steel beam (10). The first connecting component includes a first connecting seat (5) disposed on the tower column crossbeam (11) and a pad stone (9) disposed at the lower end of the first connecting seat (5). The second connecting component includes a second connecting seat (6) connected to the bottom end of the steel main beam (10); the driving component includes a connecting rod (2) and a push box (4) connected to the end of the connecting rod (2) near the first connecting seat (5); the push box (4) is a hollow structure, the connecting rod (2) is hinged to the push box (4) through a first pin (1), and the end of the connecting rod (2) near the steel main beam (10) is hinged to the second connecting seat (6) through a third pin (32); a limiting component (8) is provided inside the push box (4) to limit the connecting rod (2), and the limiting component (8) is a pad; a jack (7) is provided inside the push box (4). The method includes the following steps: When erecting the steel main beam (10) segment above the main tower crossbeam, a spacing adjustment component is set up. The connecting rod (2) and the second connecting seat (6) are hinged together using the first connecting seat (5) and the second connecting seat (6), and the push box (4) and the first connecting seat (5) are hinged together. The push box (4) and the connecting rod (2) are hinged together through the first pin (1), and a limiting component (8) is set in the push box (4) to achieve the purpose of longitudinal limiting constraint in the stage of cantilever erection of steel main beam (10). A total of four spacing adjustment components are set on the two tower column crossbeams on the upstream and downstream of the side span and the upstream and downstream of the middle span. Before the mid-span closure segment is fed into the closure opening, the pads in the two push boxes (4) on the side span are removed, and the adjusting jacks (7) are set in the two push boxes (4) on the side span. Then the first pins (1) on the side and mid-span are removed. The two jacks (7) in the push boxes on the side span are simultaneously pressurized and pushed a certain distance to the side span and locked. The pads of the corresponding thickness are removed from the two push boxes on the mid-span. The steel main beam (10) is adjusted and moved to the side span to increase the size of the mid-span closure opening. After the mid-span closure segment is fed into the closure opening, the jacks (7) in the side-span jacking box (4) are properly returned to oil and locked, so as to remove the limiting piece (8) in the mid-span jacking box, place the adjusting jacks (7) in the mid-span jacking box and lock them, and remove the jacks (7) in the side-span jacking box after returning to oil. The two jacks (7) in the mid-span jacking box are simultaneously pressurized and pushed to the mid-span side a certain distance, and the corresponding thickness of the pads are removed from the two side-span jacking boxes (4), so as to adjust and shift the steel main beam to the mid-span side and reduce the size of the mid-span closure opening. After the middle span is officially closed, the jacks (7) in the jacking box (4) are returned to oil and then removed. Then the pads are removed, and finally the connecting rods (2) and the jacking box (4) are removed. The formal damper is then installed to complete the transformation of the structural system.

2. The closure adjustment method as described in claim 1, characterized in that: The push box (4) is hinged to the first connecting seat (5) via the second pin (31).

3. The closure adjustment method as described in claim 1, characterized in that: The scooping pad is provided in multiple pieces, and the scooping pad is made of steel plate.

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