Bridge support with adjustable pre-deviation

Abstract

The pre-deviation-adjustable bridge support comprises an upper support plate and a lower support plate and is characterized by further comprising an adjusting assembly used for adjusting the pre-deviation and a locking assembly used for locking or unlocking the adjusting assembly, the adjusting assembly comprises an upper connecting plate and a lower connecting plate, the upper connecting plate is fixedly connected with the upper support plate, and the lower connecting plate is fixedly connected with the lower support plate. The lower connecting plate is fixedly connected with the lower support plate, a sliding groove extending in the length direction of the bridge is formed in the lower connecting plate, the upper connecting plate can move along the sliding groove in the state that the locking assembly unlocks the adjusting assembly, and therefore the upper support plate is driven to move relative to the lower support plate, and the lower connecting plate can move along the sliding groove in the state that the adjusting assembly is locked by the locking assembly. And the upper support plate is static relative to the lower support plate. The bridge support has the advantages that constructors do not need to process the upper support plate and the lower support plate of the bridge support on site, the structures of the upper support plate and the lower support plate are more stable, and the bridge support can be quickly assembled and disassembled, can be repeatedly used and is better in economical efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a bridge support with adjustable pre-bias. Background Art

[0002] The bridge bearing is an important structural component connecting the superstructure and substructure of the bridge. The bridge bearing can transfer the reaction force and deformation of the superstructure of the bridge to the substructure, and is an important force transmission device of the bridge. However, during the actual construction of the bridge, the supporting points of the cast-in-place continuous beam will have different degrees of offset, which will cause the bridge bearing to adapt to the pre-bias and centerline position offset during the assembly process to adapt to the actual structure of the bridge.

[0003] In response to the above problems, existing bridge bearings usually have an adjustment device capable of adjusting the offset between the upper bearing plate and the lower bearing plate. The adjustment device is shown in the Chinese utility model "A device for adjusting and fixing the pre-bias of a bridge bearing and a bridge bearing" with application number 202320221555.3 (authorization announcement number CN219195631U). The device includes a slide groove and a connecting piece. The slide groove is used to be fixedly connected to the upper bearing plate of the bridge bearing. One end of the connecting piece is movably connected to the slide groove in the length direction of the bridge, and the other end of the connecting piece is used to be fixedly connected to the lower bearing plate of the bridge bearing, so that the bridge bearing can effectively adjust the offset.

[0004] Although the above-mentioned bridge bearing can adjust the pre-bias, the adjustment device of the bridge bearing needs to be fixedly connected with the lower bearing plate on site, that is, after the connecting piece of the adjustment device is adjusted to a suitable position, the construction personnel need to weld or bolt the connecting piece of the adjustment device to the lower bearing plate, which makes the construction process more complicated, and the construction equipment may affect the structure of the lower bearing plate during the process of fixing the connecting piece. Therefore, it is necessary to make further improvements to the bridge bearing with adjustable pre-bias. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a bridge support with an adjustment component of a split structure in view of the above-mentioned existing technical status, and the adjustment component can adjust the pre-bias amount.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: the bridge bearing with adjustable pre-bias includes an upper bearing plate and a lower bearing plate, and is characterized in that: it also includes an adjustment component for adjusting the pre-bias and a locking component for locking or unlocking the adjustment component, the adjustment component includes an upper connecting plate and a lower connecting plate, the upper connecting plate is fixedly connected to the upper bearing plate, the lower connecting plate is fixedly connected to the lower bearing plate, and the lower connecting plate is provided with a slide groove extending along the length direction of the bridge, when the locking component unlocks the adjustment component, the upper connecting plate can move along the slide groove, thereby driving the upper bearing plate to move relative to the lower bearing plate, and when the locking component locks the adjustment component, the upper bearing plate is stationary relative to the lower bearing plate.

[0007] As a solution of the upper connecting plate, the upper connecting plate includes a vertical plate and a horizontal plate arranged in an L shape, the vertical plate is fixedly connected to the upper support plate, and the horizontal plate is installed in the slide groove of the lower connecting plate and can move along the slide groove. The L-shaped upper connecting plate can be fixedly connected to the upper support plate and can move along the slide groove.

[0008] In order to enable the locking assembly to lock or unlock the adjustment assembly, preferably, an intermediate plate is provided between the upper support plate and the lower support plate, the locking assembly includes a screw and a nut threadedly connected to the screw, the screw is fixed to the intermediate plate along the length direction of the bridge, a connection hole for the screw to pass through is provided on the vertical plate of the upper connecting plate, when the upper connecting plate moves along the slide slot, the upper connecting plate moves relative to the screw through the connection hole, and the nut can be rotated to press against or release the upper connecting plate. When the upper connecting plate moves relative to the lower connecting plate, the upper connecting plate moves relative to the screw through the connection hole, so that the adjustment assembly can adjust the pre-bias, the nut is rotated to press against the upper connecting plate to lock the adjustment assembly, and the nut is rotated to release the upper connecting plate to unlock the adjustment assembly.

[0009] Furthermore, the connecting hole is a long waist-shaped hole, and the extending direction of the connecting hole is consistent with the length direction of the vertical plate. The long waist-shaped connecting hole can make the upper connecting plate move more smoothly relative to the screw rod.

[0010] Furthermore, the locking assembly further comprises a washer sleeved on the screw rod, and the washer is installed between the nut and the upper connecting plate. The washer can increase the contact area, reduce the pressure, and prevent loosening, thereby protecting the nut and the upper connecting plate.

[0011] In order to enable the upper connecting plate to be fixedly connected to the upper supporting plate, preferably, at least two first fixing holes are provided on the vertical plate of the upper connecting plate, and bolts can pass through the first fixing holes and be fixed to the upper supporting plate to achieve fixed connection between the upper connecting plate and the upper supporting plate.

[0012] Furthermore, a stopper is provided on one side of the vertical plate close to the upper support plate, and when the upper connecting plate is fixedly connected to the upper support plate, the stopper can abut against the lower surface of the upper support plate. The stopper increases the contact area between the upper connecting plate and the upper support plate, making the connection between the upper connecting plate and the upper support plate more stable.

[0013] As a solution of the lower connecting plate, the lower connecting plate includes a fixing plate for connecting with the lower supporting plate and two connecting parts installed on the fixing plate, and sliding grooves are arranged on opposite sides of the two connecting parts. The lower connecting plate is fixedly connected with the lower supporting plate through the fixing plate, and the two connecting parts located above the fixing plate can form a sliding groove for the upper connecting plate to move, so that the lower connecting plate is slidably connected with the upper connecting plate.

[0014] In order to enable the lower connecting plate to be fixedly connected to the lower supporting plate, preferably, at least two second fixing holes are provided on the fixing plate of the lower connecting plate, and bolts can pass through the second fixing holes and be fixed to the lower supporting plate to achieve fixed connection between the lower connecting plate and the lower supporting plate.

[0015] Compared with the prior art, the utility model has the advantages that the bridge bearing can temporarily adjust the pre-bias on site through the adjustment component and the locking component, that is, the upper connecting plate and the lower connecting plate of the adjustment component are respectively connected to the upper support plate and the lower support plate, and the upper connecting plate can move relative to the lower connecting plate. After moving to a suitable position according to the pre-bias, the locking component can lock the adjustment component, so that the position of the upper support plate relative to the lower support plate is fixed, thereby completing the adjustment of the pre-bias of the bridge bearing. Therefore, the construction personnel do not need to further process the upper support plate and the lower support plate of the bridge bearing on site, making the structure of the upper support plate and the lower support plate more stable, and the bridge bearing can be quickly assembled and disassembled and can be reused, which is more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the upper connecting plate in the embodiment of the utility model;

[0019] Figure 4 This is a structural schematic diagram of the lower connecting plate in the embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the lower connecting plate and the lower supporting plate in the embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the locking assembly in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 6 Shown is the best embodiment of the utility model.

[0024] like Figures 1 to 6 As shown, the bridge bearing of this embodiment includes an upper bearing plate 1, a lower bearing plate 2, an adjustment component 3, a locking component 4 and an intermediate plate 5, the intermediate plate 5 is arranged between the upper bearing plate 1 and the lower bearing plate 2, the adjustment component 3 is used to adjust the pre-bias, the locking component 4 is used to lock or unlock the adjustment component 3, the adjustment component 3 includes an upper connecting plate 31 and a lower connecting plate 32, the upper connecting plate 31 is fixedly connected to the upper bearing plate 1, the lower connecting plate 32 is fixedly connected to the lower bearing plate 2, and the lower connecting plate 32 is provided with a slide groove 321 extending along the length direction of the bridge, when the locking component 4 unlocks the adjustment component 3, the upper connecting plate 31 can move along the slide groove 321, thereby driving the upper bearing plate 1 to move relative to the lower bearing plate 2, and when the locking component 4 locks the adjustment component 3, the upper bearing plate 1 is stationary relative to the lower bearing plate 2.

[0025] like Figure 3 As shown, the upper connecting plate 31 of this embodiment includes a vertical plate 311 and a horizontal plate 312 arranged in an L shape, the vertical plate 311 is fixedly connected to the upper support plate 1, and the horizontal plate 312 is installed in the slide groove 321 of the lower connecting plate 32 and can move along the slide groove 321. Among them, the vertical plate 311 of the upper connecting plate 31 is provided with two first fixing holes 314, and bolts can pass through the first fixing holes 314 and be fixed on the upper support plate 1 to achieve the vertical plate 311 of the upper connecting plate 31 and the upper support plate 1. A stopper 315 is provided on the side of the vertical plate 311 close to the upper support plate 1. When the upper connecting plate 31 is fixedly connected to the upper support plate 1, the stopper 315 can abut against the lower surface of the upper support plate 1. In addition, a connecting hole 313 for the screw 41 to pass through is provided on the vertical plate 311 of the upper connecting plate 31. The connecting hole 313 is a long waist-shaped hole. The extending direction of the connecting hole 313 is consistent with the length direction of the vertical plate 311. When the upper connecting plate 31 moves along the slide groove 321, the upper connecting plate 31 moves relative to the screw 41 through the connecting hole 313.

[0026] like Figure 4 and Figure 5As shown, the lower connecting plate 32 of this embodiment includes a fixing plate 322 for connecting with the lower support plate 2 and two connecting parts 323 installed on the fixing plate 322, and the opposite sides of the two connecting parts 323 are provided with sliding grooves 321. In addition, the fixing plate 322 of the lower connecting plate 32 is provided with three second fixing holes 324, and bolts can pass through the second fixing holes 324 and be fixed on the lower support plate 2, so as to realize the fixed connection between the lower connecting plate 32 and the lower support plate 2.

[0027] like Figure 6 As shown, the locking assembly 4 of this embodiment includes a screw rod 41, a nut 42 threadedly connected to the screw rod 41, and a gasket 43 sleeved on the screw rod 41. The screw rod 41 is fixed on the middle plate 5 along the length direction of the bridge. The screw rod 41 can pass through the connection hole 313 of the upper connecting plate 31. The rotating nut 42 can resist or loosen the upper connecting plate 31, thereby locking or unlocking the adjustment assembly 3. The gasket 43 is installed between the nut 42 and the upper connecting plate 31. The gasket 43 can increase the contact area, reduce the pressure, and prevent loosening, thereby protecting the nut 42 and the upper connecting plate 31.

[0028] In order to make the upper connecting plate 31 move more smoothly relative to the lower connecting plate 32, the two sides of the horizontal plate 312 of the upper connecting plate 31 of this embodiment have arc-shaped surfaces, and the opposite sides of the two connecting parts 323 are provided with sliding surfaces adapted to the arc-shaped surfaces of the horizontal plate 312, so that the upper connecting plate 31 can move more smoothly relative to the lower connecting plate 32. In addition, when the lower connecting plate 32 of this embodiment is installed on the lower support plate 2, three slide plates 6 are also provided in the slide groove 321, and the slide plates 6 can make the upper connecting plate 31 move more smoothly relative to the lower connecting plate 32, one pad 6 is installed on the lower support plate 2, and the shapes of the other two pads 6 are adapted to the sliding surfaces of the connecting parts 323, and the two pads 6 are respectively installed in the corresponding connecting parts 323.

[0029] Before the bridge bearing of this embodiment leaves the factory: first, the screw rod 41 is installed on the middle plate 5; then the lower connecting plate 32 is installed on the lower supporting plate 2, that is, the bolt passes through the second fixing hole 324 to be fixed on the lower supporting plate 2, and the slide plate 6 is installed in the slide groove 321; then the upper connecting plate 31 is installed on the upper supporting plate 1, that is, the screw rod 41 passes through the connecting hole 313 of the upper connecting plate 31, the cross plate 312 is inserted into the slot 321, the stopper 315 of the upper connecting plate 31 is against the lower surface of the upper supporting plate 1, and the bolt passes through the first fixing hole 314 to be fixed on the upper supporting plate 1, thereby completing the installation of the upper connecting plate 31; then the gasket 43 and the nut 42 are installed on the screw rod 41; finally, the nut 42 is tightened to press against the vertical plate 311 of the upper connecting plate 31, so that the locking assembly 4 temporarily locks the adjustment assembly 3, which is convenient for the transportation of the bridge bearing.

[0030] When the bridge bearing of this embodiment is at the construction site, the bridge bearing is first installed on the pier top bearing pad stone, and the nut 42 is rotated to loosen the vertical plate 311 of the upper connecting plate 31, so that the adjustment component 3 is in an unlocked state; then the upper connecting plate 31 is moved along the slide groove 321 according to the pre-bias amount, thereby driving the upper support plate 1 to move relative to the lower support plate 2; when the upper connecting plate 31 moves to a suitable position, that is, the support center of the bridge main beam is aligned with the center line of the upper support plate 1, the nut 42 is tightened to resist the upper connecting plate 31, so that the adjustment component 3 is in a locked state, and the bridge bearing completes the adjustment of the pre-bias amount.

[0031] The pre-bias amount of the bridge bearings of the above-mentioned pier top beam sections is implemented according to the pre-bias amount setting table, and the pre-bias amount setting table is determined according to the inverse value of the accumulated displacement during the construction process + 1 / 2* (the total deformation of the ten-year shrinkage creep displacement).

[0032] The adjustment component 3 and the locking component 4 of the present embodiment have a simple structure and are more convenient to install with the bridge bearing. The adjustment component 3 and the locking component 4 can be quickly assembled and disassembled and can be reused. Therefore, the adjustment component 3 and the locking component 4 of the present embodiment are suitable for highway bridge bearings. The bridge bearings include but are not limited to spherical bearings, pot-type bearings, plate-type bearings, etc. The adjustment component 3 and the locking component 4 enable the bridge bearings to have longitudinal, lateral and flipping multi-directional sliding and turning functions. For example, for large bearings, changes in pre-bias often occur in on-site construction projects. The bridge bearing of the present embodiment can temporarily adjust the pre-bias of the bearing without the need for large lifting equipment.

Claims

1. A bridge bearing with adjustable pre-deflection, comprising an upper bearing plate (1) and a lower bearing plate (2), characterized in that: It also includes an adjustment component (3) for adjusting the pre-bias and a locking component (4) for locking or unlocking the adjustment component (3), wherein the adjustment component (3) includes an upper connecting plate (31) and a lower connecting plate (32), wherein the upper connecting plate (31) is fixedly connected to the upper support plate (1), and the lower connecting plate (32) is fixedly connected to the lower support plate (2), and the lower connecting plate (32) is provided with a slide groove (321) extending along the length direction of the bridge, and when the locking component (4) unlocks the adjustment component (3), the upper connecting plate (31) can move along the slide groove (321), thereby driving the upper support plate (1) to move relative to the lower support plate (2), and when the locking component (4) locks the adjustment component (3), the upper support plate (1) is stationary relative to the lower support plate (2).

2. The bridge bearing according to claim 1, characterized in that: The upper connecting plate (31) comprises a vertical plate (311) and a horizontal plate (312) arranged in an L shape, wherein the vertical plate (311) is fixedly connected to the upper support plate (1), and the horizontal plate (312) is installed in a slide groove (321) of the lower connecting plate (32) and can move along the slide groove (321).

3. The bridge bearing according to claim 2, characterized in that: An intermediate plate (5) is provided between the upper support plate (1) and the lower support plate (2); the locking assembly (4) comprises a screw rod (41) and a nut (42) threadedly connected to the screw rod (41); the screw rod (41) is fixed to the intermediate plate (5) along the length direction of the bridge; a connecting hole (313) for the screw rod (41) to pass through is provided on the vertical plate (311) of the upper connecting plate (31); when the upper connecting plate (31) moves along the slide groove (321), the upper connecting plate (31) moves relative to the screw rod (41) through the connecting hole (313), and the upper connecting plate (31) can be pressed or loosened by rotating the nut (42).

4. The bridge bearing according to claim 3, characterized in that: The connection hole (313) is a long waist-shaped hole, and the extension direction of the connection hole (313) is consistent with the length direction of the vertical plate (311).

5. The bridge bearing according to claim 3, characterized in that: The locking assembly (4) further comprises a washer (43) sleeved on the screw rod (41), wherein the washer (43) is installed between the nut (42) and the upper connecting plate (31).

6. The bridge bearing according to claim 2, characterized in that: At least two first fixing holes (314) are provided on the vertical plate (311) of the upper connecting plate (31), and bolts can pass through the first fixing holes (314) and be fixed on the upper supporting plate (1), so as to realize a fixed connection between the upper connecting plate (31) and the upper supporting plate (1).

7. The bridge bearing according to claim 2, characterized in that: A stopper (315) is provided on one side of the vertical plate (311) close to the upper support plate (1); when the upper connecting plate (31) is fixedly connected to the upper support plate (1), the stopper (315) can abut against the lower surface of the upper support plate (1).

8. The bridge bearing according to any one of claims 1 to 7, characterized in that: The lower connecting plate (32) comprises a fixing plate (322) for connecting with the lower supporting plate (2) and two connecting portions (323) mounted on the fixing plate (322), and sliding grooves (321) are provided on opposite sides of the two connecting portions (323).

9. The bridge bearing according to claim 8, characterized in that: At least two second fixing holes (324) are provided on the fixing plate (322) of the lower connecting plate (32), and bolts can pass through the second fixing holes (324) and be fixed on the lower supporting plate (2), so as to realize the fixed connection between the lower connecting plate (32) and the lower supporting plate (2).

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