Settlement compensation device for bridge and bridge

Abstract

According to the settlement compensation device for the bridge and the bridge provided by the embodiment of the invention, the settlement compensation device for the bridge is located between the bridge support and the upper top surface of the bridge pier, and the settlement compensation device for the bridge is arranged between the bridge support and the upper top surface of the bridge pier through a mode that the thread fixing disc and the thread rotating disc are sleeved and are in threaded connection; when the threaded rotating disc rotates around the axis of the threaded rotating disc, the upper assembly is driven to move in the vertical direction so as to adjust the vertical distance between the upper base plate and the lower base plate. Secondly, through a positioning bolt and a driving gear in the driving assembly, the driving gear drives a threaded rotating disc to rotate around the axis of the driving gear through a first gear tooth part and a second gear tooth part, the adjusting precision is high, and force application of an operator is facilitated; therefore, the distance between the bridge support and the upper top face of the bridge abutment is adjusted, increase and decrease compensation is carried out on the settlement difference of the widened bridge, the compensation requirements of different abutment settlement volumes can be met, and it is ensured that the settlement difference of new and old bridge abutments can be completely compensated.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular, to a settlement compensation device for a bridge and a bridge. Background Art

[0002] At present, the general scheme for widening bridges is to separate the upper and lower structures of the original bridge and the newly widened bridge, and only connect the bridge deck pavement. In this method, the main structures of the original bridge and the newly widened bridge are independent of each other, and the forces between the two have little mutual influence, which causes little disturbance to the original bridge. However, this widening method has the following disadvantages.

[0003] (1) Since bridges built on soil foundations have large post-construction settlements, the post-construction settlements of the original bridges have been basically completed, and no settlement will occur after widening. However, the newly widened bridges will need to undergo post-construction settlements after widening. This will cause a settlement difference between the original bridge and the newly widened bridge, resulting in frequent cracks and obvious height differences at the connection between the old and new bridges, thus affecting the smoothness of vehicle driving. At the same time, cracks in the bridge deck also have a significant adverse effect on the service life of the bridge deck.

[0004] (2) For bridges that adopt this widening method, in order to reduce the settlement difference between the original bridge and the newly widened bridge, measures need to be taken to reduce the settlement of the newly widened bridge. These measures require increasing the pier foundation size of the newly widened bridge or improving the stiffness of the bridge foundation. These measures will result in a significant increase in the cost of the bridge. Utility Model Content

[0005] In an embodiment of the present application, a settlement compensating device for a bridge is provided to solve the problem that after settlement occurs in an existing widened bridge, the foundation size of the pier of the widened bridge needs to be increased and reinforced, thereby increasing the cost of the bridge.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A settlement compensation device for a bridge, located between a bridge support and a top surface of a bridge pier, comprises:

[0008] An upper assembly, comprising an upper pad and a threaded fixing plate, wherein the threaded fixing plate is fixed below the upper pad, and the upper pad is connected to the bottom of the bridge support;

[0009] The lower component includes a lower pad and a threaded rotating disk, wherein the lower pad is connected to the top surface of the bridge pier, the bottom of the threaded rotating disk is seated on the lower pad, the top of the threaded rotating disk is fitted with the threaded fixed disk and is threadedly connected, and the threaded rotating disk can rotate around its own axis relative to the upper pad and the lower pad, respectively, to drive the upper component to move vertically;

[0010] A driving assembly is used to drive the threaded rotating disk to rotate along its own axis; the driving assembly includes a positioning bolt and a driving gear, the positioning bolt is fixed to the lower pad; the driving gear has a positioning bolt hole, the driving gear is mounted on the positioning bolt through the positioning bolt hole, and can rotate relative to the positioning bolt; the outer wall of the driving gear is provided with a first gear tooth portion, and the bottom of the threaded rotating disk is provided with a second gear tooth portion, and the driving gear drives the threaded rotating disk to rotate around its own axis through the first gear tooth portion and the second gear tooth portion.

[0011] Optionally, the threaded fixing disk has a hollow cavity extending vertically downward, and the inner wall of the hollow cavity is provided with an internal thread;

[0012] The threaded rotating disk is sleeved in the hollow cavity, and the outer wall of the threaded rotating disk is provided with an external thread for matching with the internal thread.

[0013] Optionally, the upper component further comprises a positioning pin, which is located in the hollow cavity and fixed to the upper pad;

[0014] The lower component also includes a positioning sleeve fixed to the upper surface of the lower pad. The center of the threaded rotating disk has a positioning sleeve hole extending vertically. The positioning sleeve is sleeved in the positioning sleeve hole. The positioning pin is sleeved in the positioning sleeve. The positioning sleeve limits the rotation of the positioning pin around its own axis.

[0015] Optionally, a sliding pad layer is provided on the upper surface of the lower pad, and the threaded rotating disk is seated on the sliding pad layer.

[0016] Optionally, the upper component further comprises:

[0017] A plurality of first stiffening plates are located in the hollow cavity, and in the radial direction of the threaded fixing plate, two ends of the first stiffening plates are respectively fixed to the positioning pin shaft and the inner wall of the threaded fixing plate; in the vertical direction, the upper surface of the first stiffening plates is fixed to the lower surface of the upper pad;

[0018] And / or, a plurality of second stiffening plates are located outside the threaded fixing disk, and the second stiffening plates are respectively fixed to the outer wall of the threaded fixing disk and the lower surface of the upper pad.

[0019] Optionally, the cross-section of the positioning pin is rectangular, and the cross-section of the positioning sleeve is rectangular.

[0020] Optionally, the driving gear is provided with a nut portion and the first gear tooth portion in sequence along the vertical direction, and the nut portion is used to cooperate with a wrench to drive the driving gear to rotate around its own axis.

[0021] The present application provides a bridge, comprising a bridge beam, a bridge bearing, a bridge pier and a bridge settlement compensating device as described in any one of the above embodiments, wherein the bridge settlement compensating device is located between the bridge bearing and the bridge pier, and the bridge beam is located above the bridge bearing.

[0022] A settlement compensating device for a bridge provided in an embodiment of the present application is located between a bridge support and the top surface of a bridge pier, comprising: an upper component, comprising an upper pad and a threaded fixing disk, the threaded fixing disk being fixed below the upper pad, and the upper pad being connected to the bottom of the bridge support; a lower component, comprising a lower pad and a threaded rotating disk, the lower pad being connected to the top surface of the bridge pier, the bottom of the threaded rotating disk being seated on the lower pad, the top of the threaded rotating disk being fitted with the threaded fixing disk and being threadedly connected, the threaded rotating disk being able to rotate around its own axis relative to the upper pad and the lower pad, respectively, to drive the upper component along Vertical movement; a driving assembly for driving the threaded rotating disk to rotate along its own axis; the driving assembly includes a positioning bolt and a driving gear, the positioning bolt is fixed to the lower pad; the driving gear has a positioning bolt hole, the driving gear is sleeved on the positioning bolt through the positioning bolt hole, and can rotate relative to the positioning bolt; the outer wall of the driving gear is provided with a first gear tooth portion, and the bottom of the threaded rotating disk is provided with a second gear tooth portion, and the driving gear drives the threaded rotating disk to rotate around its own axis through the first gear tooth portion and the second gear tooth portion.

[0023] Compared with the prior art, the settlement compensation device for a bridge provided in the embodiment of the present application has the following technical effects:

[0024] A settlement compensation device for a bridge is arranged between the bridge bearing and the upper surface of the bridge pier, and a threaded fixed disk and a threaded rotating disk are assembled and threadedly connected, so that when the threaded rotating disk rotates around its own axis, the upper component is driven to move vertically to adjust the vertical distance between the upper pad and the lower pad; secondly, through the positioning bolts and driving gears in the driving assembly, the driving gear drives the threaded rotating disk to rotate around its own axis through the first gear tooth portion and the second gear tooth portion, and the adjustment accuracy is high, which is convenient for operators to apply force; thereby, the distance between the bridge bearing and the upper surface of the bridge pier is adjusted, and the settlement difference of the widened bridge is increased or decreased to compensate, which can meet the compensation needs of different pier settlement amounts and ensure that the settlement difference of the new and old bridge piers can be fully compensated.

[0025] In order to achieve the above second purpose, the present application also provides a bridge, comprising a bridge beam, a bridge support, a bridge pier, and a bridge settlement compensation device as described in any one of the above embodiments, wherein the bridge settlement compensation device is located between the bridge support and the bridge pier, and the bridge beam is located above the bridge support. Since the above-mentioned bridge settlement compensation device has the above-mentioned technical effects, a bridge having the bridge settlement compensation device should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 A schematic cross-sectional view of a settlement compensation device for a bridge provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 Schematic diagram of the cross section at AA;

[0029] Figure 3 for Figure 1 Schematic diagram of the cross section at BB;

[0030] Figure 4 for Figure 1 Schematic diagram of the cross section at CC;

[0031] Figure 5 A schematic cross-sectional view of the upper assembly provided in an embodiment of the present application;

[0032] Figure 6 A schematic cross-sectional view of the threaded rotating disk provided in an embodiment of the present application;

[0033] Figure 7 A schematic cross-sectional view of the lower assembly provided in an embodiment of the present application;

[0034] Figure 8 A schematic diagram of the structure of a drive assembly provided in an embodiment of the present application;

[0035] Fig. 9 A schematic diagram of the structure of a driving gear provided in an embodiment of the present application;

[0036] Fig.10 A schematic diagram of the top view of the driving gear provided in an embodiment of the present application.

[0037] The following are marked in the accompanying drawings:

[0038] Upper pad 11, threaded fixing plate 12, internal thread 121, positioning pin 13, first stiffening plate 14, second stiffening plate 15;

[0039] Lower pad 21, threaded rotating disk 22, second gear tooth portion 221, external thread 222, positioning sleeve 23, positioning sleeve hole 24, sliding pad 25;

[0040] The positioning bolt 31 , the driving gear 32 , the first gear tooth portion 321 , and the nut portion 322 . DETAILED DESCRIPTION

[0041] The utility model discloses a settlement compensating device for a bridge, so as to solve the problem that after settlement occurs in the existing widened bridge, the foundation size of the widened bridge pier needs to be increased and reinforced, which increases the cost of the bridge.

[0042] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0043] See also Figure 1-10 , Figure 1 A schematic cross-sectional view of a settlement compensation device for a bridge provided in an embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the cross section at AA; Figure 3 for Figure 1 Schematic diagram of the cross section at BB;

[0044] Figure 4 for Figure 1 Schematic diagram of the cross section at CC; Figure 5 A schematic cross-sectional view of the upper assembly provided in an embodiment of the present application; Figure 6 A schematic cross-sectional view of the threaded rotating disk 22 provided in an embodiment of the present application; Figure 7 A schematic cross-sectional view of the lower assembly provided in an embodiment of the present application; Figure 8 A schematic diagram of the structure of a drive assembly provided in an embodiment of the present application; Fig. 9 A schematic diagram of the structure of the driving gear 32 provided in an embodiment of the present application; Fig.10 This is a schematic top view of the driving gear 32 provided in an embodiment of the present application.

[0045] In a specific embodiment, the settlement compensation device for a bridge provided by the present application is located between the bridge bearing and the top surface of the bridge pier, so as to adjust the distance between the bridge bearing and the bridge pier to compensate for the increase or decrease of the settlement. The device includes an upper component and a lower component; the upper component includes an upper pad 11 and a threaded fixing disk 12, the threaded fixing disk 12 is located below the upper pad 11, preferably located at the center of the upper pad 11, the upper pad 11 and the threaded fixing disk 12 are welded and fixed, and the upper pad 11 and the bridge bearing can be welded and fixed with embedded steel plates. The lower component includes a lower pad 21 and a threaded rotating disk 22. The lower pad 21 is fixedly connected to the top surface of the bridge pier and can also be fixed by welding with embedded steel plates. The bottom of the threaded rotating disk 22 is located on the lower pad 21 and can rotate around its own axis relative to the lower pad 21. The threaded rotating disk 22 is preferably located at the center of the lower pad 21. The top of the threaded rotating disk 22 is fitted with the threaded fixed disk 12. Specifically, a hollow cavity is provided at the center of the threaded fixed disk 12. The threaded rotating disk 22 is fitted with the hollow cavity, and the hollow cavity An internal thread 121 is provided on the inner wall, and an external thread 222 is provided on the circumferential outer wall of the threaded rotating disk 22. The threaded fixed disk 12 and the threaded rotating disk 22 are threadedly connected. The threaded rotating disk 22 can rotate around its own axis relative to the upper pad 11 and the lower pad 21 respectively. When the threaded rotating disk 22 is driven to rotate, the external thread 222 and the internal thread 121 engage, and the threaded fixed disk 12 moves up or down vertically, thereby driving the upper component to move vertically relative to the lower pad 21, thereby adjusting the distance between the bridge support and the top surface of the bridge pier.

[0046] Compared with the prior art, the settlement compensation device for a bridge provided in the embodiment of the present application has the following technical effects:

[0047] A settlement compensation device for a bridge is arranged between the bridge bearing and the upper surface of the bridge pier, and the threaded fixed disk 12 and the threaded rotating disk 22 are assembled and threadedly connected, so that when the threaded rotating disk 22 rotates around its own axis, the upper component is driven to move vertically to adjust the vertical distance between the upper pad 11 and the lower pad 21, and then the distance between the bridge bearing and the upper surface of the bridge pier is adjusted, so as to increase or decrease compensation for the settlement difference of the widened bridge, meet the compensation needs of different pier settlement amounts, and ensure that the settlement difference of the new and old bridge piers can be fully compensated.

[0048] In some embodiments, the above-mentioned device also includes a driving component, which is located on the lower pad 21 and can drive the threaded rotating disk 22 to rotate along its own axis. The driving component can be set as a gear mechanism, a gear rack mechanism or a worm gear mechanism, etc., and can be set as needed, so as to accurately adjust the settlement compensation amount and improve the compensation accuracy.

[0049] In other embodiments, the threaded fixed disk 12 has a hollow cavity extending vertically, and the inner wall of the hollow cavity is provided with an internal thread 121; the threaded rotating disk 22 is set in the hollow cavity, and the outer wall of the threaded rotating disk 22 is provided with an external thread 222 for matching with the internal thread 121. The cross section of the hollow cavity is circular, and the internal thread 121 of the inner wall of the hollow cavity matches with the external thread 222 of the threaded rotating disk 22 to achieve vertical linear movement through threaded connection.

[0050] In order to prevent the upper pad 11 from rotating under the drive of the threaded fixing disk 12, the upper component also includes a positioning pin 13, and the lower component also includes a positioning sleeve 23. The positioning pin 13 is located in the hollow cavity and at the center of the upper pad 11. The positioning pin 13 and the upper pad 11 are welded and fixed; the positioning sleeve 23 is fixed to the upper surface of the lower pad 21 and is also welded and fixed; the center of the threaded rotating disk 22 has a positioning sleeve hole 24 extending vertically upward, and the positioning sleeve 23 is sleeved in the positioning sleeve hole 24, and the two are clearance-matched. The threaded rotating disk 22 is made to rotate around its own axis relative to the lower pad 21, and the positioning pin 13 is sleeved in the positioning sleeve 23. The positioning sleeve 23 limits the rotation of the positioning pin 13 around its own axis, that is, when the threaded rotating disk 22 rotates, the upper pad 11 and the lower pad 21 remain relatively still; specifically, the cross-section of the positioning pin 13 is a quadrilateral, and the cross-section of the center hole of the positioning sleeve 23 is a quadrilateral; in other embodiments, the structure of the positioning pin 13 can be arranged as needed, as long as the same technical effect can be achieved.

[0051] In some embodiments, in order to reduce friction resistance when the threaded rotating disk 22 rotates, a sliding pad layer 25 is provided on the upper surface of the lower pad 21 to achieve free rotation of the threaded rotating disk 22 , and the sliding pad layer 25 and the lower pad 21 are bonded with an adhesive.

[0052] The above-mentioned device also includes a plurality of first stiffening plates 14 and a plurality of second stiffening plates 15; each first stiffening plate 14 is located in the hollow cavity, and in the radial direction of the threaded fixing disk 12, the two ends of the first stiffening plate 14 are respectively fixed to the positioning pin shaft 13 and the inner wall of the threaded fixing disk 12; in the vertical direction, the upper surface of the first stiffening plate 14 is fixed to the lower surface of the upper pad 11; thereby reinforcing the threaded fixing disk 12, the positioning pin shaft 13 and the upper pad 11; the second stiffening plate 15 is located on the outer side of the threaded fixing disk 12, and the second stiffening plate 15 is respectively fixed to the outer wall of the threaded fixing disk 12 and the lower surface of the upper pad 11, further reinforcing the threaded fixing disk 12 and the upper pad 11; the number of the first stiffening plates 14 and the second stiffening plates 15 can be set the same or different, and the number of the second stiffening plates 15 is greater than or equal to the number of the first stiffening plates 14; and the second stiffening plates 15 are radially arranged in the extension direction of the first stiffening plates 14. The number of the first stiffening plates 14 is preferably four, and the number of the second stiffening plates 15 is preferably eight.

[0053] In some embodiments, the driving assembly includes a positioning bolt 31 and a driving gear 32. The positioning bolt 31 is fixed on the lower pad 21, and the lower pad 21 is correspondingly provided with a positioning bolt hole; the driving gear 32 has a positioning bolt hole at its center, and the driving gear 32 is sleeved on the positioning bolt 31 through the positioning bolt hole, and the two are clearance-matched so as to be able to rotate relative to the positioning bolt 31; the outer wall of the driving gear 32 is provided with a first gear portion 321, and the bottom of the threaded rotating disk 22 is provided with a second gear portion 221, and the driving gear 32 drives the threaded rotating disk 22 to rotate around its own axis through the first gear portion 321 and the second gear portion 221. The contact section between the positioning bolt 31 and the driving gear 32 is a smooth round rod, so as to realize the free rotation of the driving gear 32. The lower pad 21 of the lower assembly is provided with a positioning bolt hole, and the positioning bolt 31 of the driving assembly is fixedly connected to the lower pad 21 through the positioning bolt hole. In order to reduce the rotational friction between the driving gear 32 and the lower pad 21, a sliding pad 25 is provided between the driving gear 32 and the lower pad 21. Because the lower component is fixed on the bridge pier, the driving gear 32 is fixed in the plane and vertical directions through the constraint of the positioning bolt 31, and can only rotate freely around the center of the positioning bolt 31.

[0054] Specifically, the driving gear 32 is provided with a nut portion 322 and a first gear portion 321 in sequence along the vertical direction, and the nut portion 322 is used to cooperate with a wrench to drive the driving gear 32 to rotate around its own axis. The nut portion 322 and the first gear portion 321 are arranged in an integrated manner. When the driving gear 32 needs to be rotated, the nut portion 322 is clamped by the wrench to rotate around the axis, thereby engaging the first gear portion 321 and the second gear portion 221, and driving the threaded rotating disk 22 to rotate around its own axis. Since the driving gear 32 of the height adjustment device can generate a large lifting force on the bridge bearing with a small driving force, the height adjustment device can be adjusted by rotating the driving gear 32 of the height adjustment device with a wrench in the ordinary case where the bridge bearing is subjected to a non-super-large load.

[0055] It can be understood that the above device is made of steel except for the sliding pad 25. When the bearing capacity of the bridge support above the device is small and the pressure on the sliding pad 25 is small, the sliding pad 25 can be made of a tetrafluoroethylene plate pad; when the bearing capacity of the bridge support above the device is large and the pressure on the sliding pad 25 is large, the sliding pad 25 can be made of a stainless steel plate pad.

[0056] Grouting holes and grouting exhaust holes are provided on the top of the threaded fixing plate 12 of the upper component. When the bridge widening project is completed and has been in operation for a period of time, and there is no settlement difference between the new and old bridges, and there is no need to adjust the height of the device, self-leveling non-shrinkage epoxy mortar is poured into the internal cavity of the threaded fixing plate 12 through the grouting holes to further improve the safety of the device's bearing capacity.

[0057] When the bridge widening project is completed and the old and new bridges are in operation for a period of time, and there is no settlement difference between the new and old bridges, and there is no need to adjust the height of the height adjustment device, non-shrinkage concrete is used to seal the height adjustment device to improve the structural bearing capacity, safety and durability. The non-shrinkage concrete pouring range is the free space within the range from the top surface of the pier to the upper pad 11 in the horizontal direction, with the surrounding lines of the upper pad 11 as the boundary and the height direction from the top surface of the pier to the upper pad 11.

[0058] In a specific embodiment, the upper component is composed of an upper pad 11, a first stiffening plate 14, a second stiffening plate 15, a positioning pin 13, and a threaded fixed disk 12. The upper pad 11 is fixedly connected with the first stiffening plate 14, the second stiffening plate 15, the positioning pin 13, and the threaded fixed disk 12 by welding, and the first stiffening plate 14, the second stiffening plate 15, the positioning pin 13, and the threaded fixed disk 12 are fixedly connected by welding. The threaded rotating disk 22 is provided with an external thread 222, a second gear portion 221, and a positioning sleeve hole 24, and the threaded fixed disk 12 of the upper component is connected with the threaded rotating disk 22 by threads. A sliding pad 25 is provided between the threaded rotating disk 22 and the lower pad 21 to realize the free rotation of the threaded rotating disk 22. The lower component is composed of a lower pad 21, a positioning sleeve 23, a positioning sleeve hole 24, a sliding pad 25, and a positioning bolt hole. The positioning sleeve 23 is fixedly connected to the lower pad 21 by welding, and the sliding pad 25 is bonded to the lower pad 21 by an adhesive. The lower pad 21 of the lower assembly is fixedly connected to the embedded steel plate on the top surface of the bridge pier by welding.

[0059] The lower component is provided with a positioning sleeve 23, which is cylindrical in shape and has a square positioning pin 13 hole in the middle. The positioning sleeve 23 is located in the circular positioning sleeve hole 24 of the threaded rotating disk 22, so as to fix the plane position of the threaded rotating disk 22 and realize the free rotation of the threaded rotating disk 22. The positioning pin 13 of the upper component is square and is installed in the positioning pin 13 hole of the lower component, so as to fix the plane position of the upper component relative to the lower component and prevent it from rotating, and it can only move in the vertical direction. Because the lower component is fixed on the bridge pier, the mutual constraints between the components can realize that the plane position of the upper component is fixed and cannot rotate, and it can only move in the vertical direction; the plane and vertical positions of the threaded rotating disk 22 are fixed, and it can only rotate freely around the center of the positioning sleeve 23; the lower component is fixed and does not move.

[0060] When the threaded rotating disk 22 rotates, the threaded fixed disk 12 of the upper assembly does not rotate, so the threaded rotating disk 22 and the threaded fixed disk 12 rotate relative to each other along the threaded track, pushing the threaded fixed disk 12 to move up and down, thereby adjusting the overall height of the device.

[0061] The settlement compensation device provided by the present application can realize the increase or decrease of the height adjustment range by appropriately adjusting the height of the threaded fixing disk 12, the positioning pin shaft 13, the threaded rotating disk 22, and the positioning sleeve 23, and can meet the compensation needs of different pier settlement amounts, ensuring that the settlement difference of the new and old bridge piers can be fully compensated. By appropriately adjusting the cross-sectional dimensions of the threaded fixing disk 12, the positioning pin shaft 13, the threaded rotating disk 22, and the positioning sleeve 23, and appropriately adjusting the size and number of the mutually engaged threads between the threaded fixing disk 12 and the threaded rotating disk 22, the bearing capacity can be adjusted to adapt to different bearing capacity requirements.

[0062] Based on the settlement compensating device for bridges provided in the above embodiments, the present application also provides a bridge, comprising a bridge beam, a bridge bearing, a bridge pier and the settlement compensating device for bridges of any one of the above embodiments, wherein the settlement compensating device for bridges is located between the bridge bearing and the bridge pier, and the bridge beam is located above the bridge bearing.

[0063] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A settlement compensation device for a bridge, located between a bridge support and a top surface of a bridge pier, characterized in that: include: An upper assembly, comprising an upper pad and a threaded fixing plate, wherein the threaded fixing plate is fixed below the upper pad, and the upper pad is connected to the bottom of the bridge support; The lower component includes a lower pad and a threaded rotating disk, wherein the lower pad is connected to the top surface of the bridge pier, the bottom of the threaded rotating disk is seated on the lower pad, the top of the threaded rotating disk is fitted with the threaded fixed disk and is threadedly connected, and the threaded rotating disk can rotate around its own axis relative to the upper pad and the lower pad, respectively, to drive the upper component to move vertically; A driving assembly is used to drive the threaded rotating disk to rotate along its own axis; the driving assembly includes a positioning bolt and a driving gear, the positioning bolt is fixed to the lower pad; the driving gear has a positioning bolt hole, the driving gear is mounted on the positioning bolt through the positioning bolt hole, and can rotate relative to the positioning bolt; the outer wall of the driving gear is provided with a first gear tooth portion, and the bottom of the threaded rotating disk is provided with a second gear tooth portion, and the driving gear drives the threaded rotating disk to rotate around its own axis through the first gear tooth portion and the second gear tooth portion.

2. The settlement compensation device for a bridge according to claim 1, characterized in that: The threaded fixing disk has a hollow cavity extending vertically downward, and the inner wall of the hollow cavity is provided with an internal thread; The threaded rotating disk is sleeved in the hollow cavity, and the outer wall of the threaded rotating disk is provided with an external thread for matching with the internal thread.

3. The settlement compensation device for a bridge according to claim 2, characterized in that: The upper assembly further includes a positioning pin, which is located in the hollow cavity and fixed to the upper pad; The lower component also includes a positioning sleeve fixed to the upper surface of the lower pad. The center of the threaded rotating disk has a positioning sleeve hole extending vertically. The positioning sleeve is sleeved in the positioning sleeve hole. The positioning pin is sleeved in the positioning sleeve. The positioning sleeve limits the rotation of the positioning pin around its own axis.

4. The settlement compensation device for a bridge according to claim 1, characterized in that: A sliding pad layer is provided on the upper surface of the lower pad, and the threaded rotating disk is seated on the sliding pad layer.

5. The settlement compensation device for a bridge according to claim 3, characterized in that: The upper assembly also includes: A plurality of first stiffening plates are located in the hollow cavity, and in the radial direction of the threaded fixing plate, two ends of the first stiffening plates are respectively fixed to the positioning pin shaft and the inner wall of the threaded fixing plate; in the vertical direction, the upper surface of the first stiffening plates is fixed to the lower surface of the upper pad; And / or, a plurality of second stiffening plates are located outside the threaded fixing disk, and the second stiffening plates are respectively fixed to the outer wall of the threaded fixing disk and the lower surface of the upper pad.

6. The settlement compensation device for a bridge according to claim 3, characterized in that: The cross section of the positioning pin is rectangular, and the cross section of the positioning sleeve is rectangular.

7. The settlement compensation device for a bridge according to claim 1, characterized in that: The driving gear is vertically provided with a nut portion and the first gear tooth portion in sequence, and the nut portion is used to cooperate with a wrench to drive the driving gear to rotate around its own axis.

8. A bridge, characterized in that: It comprises a bridge beam, a bridge bearing, a bridge pier and a settlement compensating device for a bridge as described in any one of claims 1 to 7, wherein the settlement compensating device for a bridge is located between the bridge bearing and the bridge pier, and the bridge beam is located above the bridge bearing.

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