Bridge pier anti-overturning reinforcing structure

Abstract

The utility model relates to bridge reinforcing technical field, concretely is a kind of bridge pier column anti-overturning reinforcing structure, comprising: fixed subassembly, fixed subassembly is used to be fixed to the support subassembly on pier column, support subassembly includes support plate and support column, support plate is located the both sides of fixed subassembly symmetrically, upper support plate is used to support box girder, box girder bottom side near bending core is connected with support plate by constraint component, constraint component is used to prevent, box girder bending core side moves upward.The utility model, utilize support column to connect two seat plate, can be the bending moment that upper fixed subassembly received is transferred to the fixed subassembly at lower side, while support column itself share part pressure and tension, to reduce the bending moment that pier column receives, avoid pier column middle part crack, improve support capacity;Utilize constraint component to connect box girder bending core side and inclined support plate, can when there is downward moving tendency outside box girder, provide certain tension, improve the anti-overturning capacity of curved box girder.

Description

Technical Field

[0001] This utility model relates to the field of bridge reinforcement technology, specifically a bridge pier anti-overturning reinforcement structure. Background Technology

[0002] During highway bridge construction, due to the influence of terrain, ground space, and landscape, single-column supports are often used for the lower piers to reduce land occupation, improve the layout of the substructure, and minimize positional conflicts between the bridge foundation and the bridge. Single-column piers are generally located on the central axis of the bridge structure. However, in the curved sections of the bridge, the axis of rotation is the line connecting the two pier support points. In the curved sections, the outer lever arm is greater than the inner one, making it more prone to lateral overturning. Therefore, to prevent bridge overturning, the piers need to be reinforced.

[0003] Strengthening piers typically involves adding new piers or cap beams. Adding new piers involves installing new supports on either side of the existing pier, usually made of steel or cast-in-place concrete. This method increases support capacity but can damage the soil layer, is more complex to construct, and requires careful attention to prevent the original pier from tilting during construction. Adding cap beams involves directly installing a cap beam and supports on top of the pier, providing additional support. The cap beam is typically made of steel and secured to the pier using bolts and rebar. This method does not affect the original pier foundation but alters the stress distribution on the pier, increasing the bending moment and increasing the risk of fracture. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a bridge pier anti-overturning reinforcement structure.

[0005] The technical solution of this utility model is:

[0006] A bridge pier anti-overturning reinforcement structure includes:

[0007] The fixing component is used to fix the support component to the pier. There are two fixing components, which are located at the top and bottom of the pier respectively. The support component includes a support plate and a support column. The support plate is symmetrically located on both sides of the fixing component. The upper support plate is used to support the box girder. The bottom of the box girder near the bending center is connected to the support plate through a constraint component. The constraint component is used to prevent the bending center side of the box girder from moving upward.

[0008] Preferably, the fixing component includes two hoops, which are semi-circular in shape, and the two hoops are wrapped around the outside of the pier and fixed with locking bolts.

[0009] Preferably, the support plate includes a seat plate, one end of which is fixedly connected to the hoop, and a diagonal brace is provided between the bottom of the seat plate and the hoop.

[0010] Preferably, a second rubber support is provided between the top surface of the upper seat plate and the box girder.

[0011] Preferably, the support column is fixedly installed between two seat plates on the same side, and a hoop is provided in the middle of the support column and the pier column, with a pull plate fixedly connected between the hoop.

[0012] Preferably, the constraint assembly includes two fixing frames, which are respectively fixedly installed on the top of the diagonal brace and the bottom of the box girder, and a connecting rod is fixedly installed between the fixing frames by fixing bolts.

[0013] Preferably, the fixing frame is provided with a waist-shaped hole, and the fixing bolt passes through the waist-shaped hole and can slide along the waist-shaped hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a support column to connect two base plates, which can transfer the bending moment of the upper fixed component to the lower fixed component. At the same time, the support column itself shares part of the pressure and tension, thereby reducing the bending moment on the pier, preventing cracking in the middle of the pier, and improving the support capacity. The constraint component connects one side of the box girder's bending center and the diagonal brace, which can provide a certain amount of tension when the outer side of the box girder has a downward tendency to move, thus improving the overturning resistance of the bent box girder. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0020] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point C.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Pier; 2. First rubber bearing; 3. Box girder;

[0023] 4. Fixing components; 41. Hoops; 42. Rebar anchors; 43. Fixing blocks; 44. Locking bolts;

[0024] 5. Support components; 51. Diagonal brace plate; 52. Seat plate; 53. Support column; 54. Hoop ring; 55. Tie plate; 56. Second rubber bearing;

[0025] 6. Constraint components; 61. Fixing bracket; 62. Waist-shaped hole; 63. Connecting rod; 64. Fixing bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments:

[0029] A bridge pier anti-overturning reinforcement structure includes:

[0030] Fixed component 4 is used to fix support component 5 to pier 1. There are two fixed components 4, which are located at the top and bottom of pier 1 respectively. Support component 5 includes support plate and support column 53. The support plate is symmetrically located on both sides of fixed component 4. The upper support plate is used to support box girder 3. The bottom of box girder 3 near the bending center is connected to the support plate through constraint component 6. Constraint component 6 is used to prevent box girder 3 from moving upward on the bending center side.

[0031] The top of pier 1 is connected to box girder 3 via a first rubber bearing 2 to reduce the impact of vehicle vibrations on pier 1. The bottom of pier 1 is buried below ground level.

[0032] The fixing component 4 includes two hoops 41, which are semi-circular. The two hoops 41 are wrapped around the outside of the pier 1 and fixed by locking bolts 44.

[0033] A fixing block 43 is welded to the side edge of the hoop 41. The fixing blocks 43 of the two hoops 41 abut against each other, and the locking bolt 44 passes through the fixing block 43 to fix the two hoops 41.

[0034] A reinforcing bar 43 is inserted through the middle of the hoop 41, and the reinforcing bar 43 is inserted into the pier column 1 and fixed with structural adhesive. The reinforcing bar 43 can hold the hoop 41 in place and prevent the hoop 41 from sliding.

[0035] The support plate includes a seat plate 52, one end of which is welded to the hoop 41, and a diagonal brace 51 is welded between the bottom of the seat plate 52 and the hoop 41.

[0036] The diagonal brace 51 is used to support the seat plate 52, which is parallel to the ground.

[0037] A second rubber bearing 56 is bolted between the top surface of the upper seat plate 52 and the box girder 3.

[0038] The second rubber bearing 56 is used to absorb the impact of vibrations generated by vehicles traveling on the box girder 3 on the seat plate 52.

[0039] The support column 53 is fixedly installed between two seat plates 52 on the same side by bolts. The support column 53 and the pier column 1 are fixedly installed with a hoop 54 by bolts in the middle. The hoop 54 are fixedly connected with a tie plate 55 by bolts.

[0040] The support column 53 can transmit the pressure on the upper seat plate 52 to the lower seat plate 52.

[0041] When the box girder 3 is subjected to uneven loads and tends to overturn, the support column 53 on one side is under compression and the support column 53 on the other side is under tension, which can disperse the bending moment on the pier 1 and prevent the pier 1 from breaking. The tie plate 55 can play a supporting role and prevent the support column 53 from separating from the seat plate 52.

[0042] The constraint assembly 6 includes two fixing frames 61, which are respectively fixed to the top of the diagonal brace 51 and the bottom of the box girder 3 by bolts. A connecting rod 63 is fixedly installed between the fixing frames 61 by fixing bolts 64.

[0043] When the box girder 3 tilts outward, traditional reinforcement methods only apply pressure to the outer seat plate 52, while the inner seat plate 52 has no contact with the box girder 3. The pressure on the outer seat plate 52 is too great, and its support capacity is limited. By using the connecting rod 63 to provide additional tension, the overturning moment of the box girder 3 can be evenly distributed, thereby improving the bearing capacity of the support component 5.

[0044] The mounting bracket 61 is provided with a waist-shaped hole 62, and the fixing bolt 64 passes through the waist-shaped hole 62 and can slide along the waist-shaped hole 62.

[0045] The waist-shaped hole 62 allows the connecting rod 63 and the fixing bolt 64 to have some room for movement, preventing the fixing bolt 64 from loosening due to vibration of the box girder 3.

[0046] Working principle: When the load on both sides of the box girder 3 is uneven, there is a tendency to overturn. At this time, the upper inclined brace plate 51 and seat plate 52 can bear part of the pressure and prevent the box girder 3 from overturning.

[0047] Pressure is transmitted from the upper seat plate 52 to the lower seat plate 52 through the support column 53, thereby improving the load-bearing capacity of the seat plate 52.

[0048] Meanwhile, the support column 53 can share part of the bending moment, and together with the tension provided by the support column 53 on the other side, it can prevent the bending moment on the pier column 1 from being too large, which could lead to breakage.

[0049] When the load on the top of the box girder 3 is excessively uneven and the degree of overturning is too large, the connecting rod 63 can provide additional tension so that the support components 5 on both sides can evenly distribute the overturning moment of the box girder 3 and improve the bearing capacity of the seat plate 52.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bridge pier anti-overturning reinforcement structure, characterized in that, include: The fixing component (4) is used to fix the support component (5) to the pier (1). There are two fixing components (4), which are located at the top and bottom of the pier (1) respectively. The support component (5) includes a support plate and a support column (53). The support plate is symmetrically located on both sides of the fixing component (4). The upper support plate is used to support the box girder (3). The bottom of the box girder (3) is connected to the support plate near the bending center through a constraint component (6). The constraint component (6) is used to prevent the bending center side of the box girder (3) from moving upward.

2. The bridge pier anti-overturning reinforcement structure as described in claim 1, characterized in that: The fixing component (4) includes two hoops (41) which are semi-circular. The two hoops (41) wrap around the outside of the pier (1) and are fixed by locking bolts (44).

3. The bridge pier anti-overturning reinforcement structure as described in claim 2, characterized in that: The support plate includes a seat plate (52), one end of which is fixedly connected to the hoop (41), and a diagonal brace (51) is provided between the bottom of the seat plate (52) and the hoop (41).

4. The bridge pier anti-overturning reinforcement structure as described in claim 3, characterized in that: A second rubber support (56) is provided between the top surface of the upper seat plate (52) and the box girder (3).

5. The bridge pier anti-overturning reinforcement structure as described in claim 3, characterized in that: The support column (53) is fixedly installed between two seat plates (52) on the same side. The support column (53) and the pier column (1) are provided with a hoop (54) in the middle. A pull plate (55) is fixedly connected between the hoop (54).

6. The bridge pier anti-overturning reinforcement structure as described in claim 3, characterized in that: The constraint assembly (6) includes two fixing frames (61), which are respectively fixedly installed on the top of the diagonal brace (51) and the bottom of the box girder (3). A connecting rod (63) is fixedly installed between the fixing frames (61) by fixing bolts (64).

7. The bridge pier anti-overturning reinforcement structure as described in claim 6, characterized in that: The fixing frame (61) is provided with a waist-shaped hole (62), and the fixing bolt (64) passes through the waist-shaped hole (62) and can slide along the waist-shaped hole (62).

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