Shearing resisting device for swivel pier

Abstract

The utility model discloses a swivel pier anti-shearing device, which belongs to the technical field of bridge swivel systems, and comprises two parallel I-beams, the back surfaces of the upper parts of the two I-beams are connected through a first pinch plate, and the front surfaces and the back surfaces of the lower parts of the two I-beams are respectively connected through a second pinch plate and a third pinch plate. The top ends and the bottom ends of the two pieces of I-shaped steel are connected through an upper steel plate and a lower steel plate respectively, the front faces of the upper portions of the two pieces of I-shaped steel are connected with an embedded steel plate, the front face of the embedded steel plate is connected with a plurality of layers of two oppositely-arranged thick rib plates, and the front faces of the two thick rib plates are connected with end plates. The thick rib plate and the end plate are embedded in the upper bearing platform concrete, and the fixing steel plate and the lower portion of the bolt are embedded in the lower bearing platform concrete. According to the utility model, the punching shearing force of the supporting legs to the bearing platform structure caused by unbalanced construction of a bridge at the upper part of the swivel pier or severe windy weather in the construction period can be reduced, and the overall stability of the bridge is ensured.

Description

Technical Field

[0001] This utility model relates to a shear-resistant device for rotating bridge piers, belonging to the technical field of bridge rotation systems. Background Technology

[0002] In some areas, the superstructure bridges all cross railway lines using a swing-over method. The main beams of the swing-over piers are constructed using hanging baskets, requiring the substructure to allow for unbalanced construction on one side of a standard section of the superstructure beams, and demanding that the T-sections of the swing-over piers withstand super typhoons of up to 99 m / s. Unbalanced construction of the superstructure bridge above the swing-over piers or severe winds can cause significant punching shear forces on the abutment structure, which will affect the overall stability of the bridge. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a shear-resistant device for rotating bridge piers, which can reduce the punching shear force on the pier cap structure caused by unbalanced construction of the upper part of the bridge or severe windy weather during construction, and ensure the overall stability of the bridge.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A shear-resistant device for a rotating bridge pier includes two parallel I-beams. The upper back sides of the two I-beams are connected by a first fastener plate, and the lower front and back sides of the two I-beams are connected by a second fastener plate and a third fastener plate, respectively. The top and bottom ends of the two I-beams are connected by an upper steel plate and a lower steel plate, respectively. An embedded steel plate is connected to the upper front of the two I-beams. Several layers of two opposing thick stiffening plates are connected to the front of the embedded steel plate. An end plate is connected to the front of the two thick stiffening plates. A fixing steel plate is connected to the lower part of the lower steel plate by bolts and nuts. The thick stiffening plates and end plates are embedded in the upper pier concrete. The lower fixing steel plate and the lower part of the bolts are embedded in the lower pier concrete. A grouting layer is provided between the lower steel plate and the lower pier.

[0006] The I-beam has reinforcing ribs on both sides inside.

[0007] The reinforcing ribs are in two sets, located at the upper and lower positions inside the I-beam, respectively.

[0008] The first, second, and third buckle plates are connected to the I-beam by welding.

[0009] The bolts and nuts are grade 10.8 M36.

[0010] The number of layers of the thick stiffening plate is 8 to 10.

[0011] The thickness of the reinforcing rib is 20mm.

[0012] The thickness of the grouting layer is 20 mm.

[0013] The beneficial effects of this utility model are as follows: The shear-resistant device for rotating bridge piers provided by this utility model uses steel profiles to make shear supports, which are installed between the upper and lower piers. Anchor bolts are pre-embedded in the lower pier, and the shear supports are installed. The upper part of the shear supports is embedded in the upper pier. This can reduce the punching shear force of the support legs on the pier structure, ensure the safety and stability of the unbalanced construction of the upper structure of the rotating bridge pier, and ensure the safety of the structure after multiple typhoons, so as to achieve a perfect rotation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of a rotating bridge pier shear-resistant device according to the present invention;

[0015] Figure 2 for Figure 1 A cross-sectional view of the AA position;

[0016] Figure 3 for Figure 2 A cross-sectional view of the BB position;

[0017] Figure 4 for Figure 1 A cross-sectional view of the CC position;

[0018] Figure 5 for Figure 1 A cross-sectional structural diagram of the DD position;

[0019] The reference numerals in the diagram are as follows: 1-Upper bearing platform; 2-Lower bearing platform; 3-I-beam; 4-Upper steel plate; 5-First snap plate; 6-Second snap plate; 7-Third snap plate; 8-Lower steel plate; 9-Grouting layer; 10-Embedded steel plate; 11-Thick stiffening plate; 12-End plate; 13-Bolt; 14-Nut; 15-Fixing steel plate; 16-Reinforcing stiffening plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0021] Example 1

[0022] like Figures 1 to 5As shown, this utility model discloses a shear-resistant device for rotating bridge piers, applied to the construction of the pier cap on a rotating bridge pier. The shear-resistant support is positioned around the pier cap, avoiding conflict with the reaction pier, traction cables, and other rotating equipment. The main structure includes two parallel H-beams 3, whose top and bottom ends are connected by an upper steel plate 4 and a lower steel plate 8, respectively, connecting the two H-beams 3 into a whole. In addition, the upper back of the two H-beams 3 is connected by a first fastening plate 5, and the lower front and back of the two H-beams 3 are connected by a second fastening plate 6 and a third fastening plate 7, respectively, reinforcing the two H-beams through the three fastening plates.

[0023] Two I-beams 3 are connected to embedded steel plates 10 on the upper front. The embedded steel plates 10 are connected to several layers of two oppositely arranged thick stiffening plates 11 on the front. The two thick stiffening plates 11 are connected to end plates 12 on the front. This part of the structure is embedded in the concrete of the upper foundation 1 to improve the shear support stability.

[0024] A fixing steel plate 15 is connected to the lower steel plate 8 via bolts 13 and nuts 14. The thick reinforcing plate 11 and end plate 12 are embedded in the concrete of the upper foundation 1. The lower parts of the fixing steel plate 15 and bolts 13 are embedded in the concrete of the lower foundation 2. A grouting layer 9 is provided between the lower steel plate 8 and the lower foundation 2. When rotation is required, it is cut from above the second and third fastening plates 6 and 7 of the I-beam 3 to achieve rotation.

[0025] This invention embeds the upper part of the shear support into the upper pier, which can reduce the punching shear force of the support foot on the pier structure, ensure the safety and stability of the unbalanced construction of the upper structure of the rotating pier, and ensure the safety of the structure after multiple typhoons, so as to achieve a perfect rotation.

[0026] Example 2

[0027] like Figures 1 to 5 As shown, this utility model discloses a shear-resistant device for rotating bridge piers. The shear support is positioned around the pier cap, avoiding conflict with rotating equipment such as reaction piers and traction cables. The main structure includes two parallel H-beams 3. Reinforcing ribs 16 are provided on both sides of the inner sides of each H-beam 3. There are two sets of reinforcing ribs 16, located at the upper and lower positions within the H-beam 3 respectively, with a thickness of 20mm, used to improve the strength of the H-beams 3. The top and bottom ends of the two H-beams 3 are connected by an upper steel plate 4 and a lower steel plate 8, respectively, connecting the two H-beams 3 into a whole. Furthermore, the upper back of the two H-beams 3 is connected by a first snap-fit ​​plate 5, and the lower front and back of the two H-beams 3 are connected by a second snap-fit ​​plate 6 and a third snap-fit ​​plate 7, respectively, reinforcing the two H-beams through these three snap-fit ​​plates. Specifically, the first snap-fit ​​plate 5, the second snap-fit ​​plate 6, and the third snap-fit ​​plate 7 are welded to the H-beams 3.

[0028] Two I-beams 3 are connected to embedded steel plates 10 on their upper front sides. Several layers of two opposing thick reinforcing slabs 11 are connected to the front sides of the embedded steel plates 10. End plates 12 are connected to the front sides of the two thick reinforcing slabs 11. The thick reinforcing slabs and end plates 12 are embedded in the concrete of the upper foundation 1 to improve the shear support stability. The number of layers of thick reinforcing slabs 11 is 8 to 10, preferably 9 layers in this embodiment.

[0029] A fixing steel plate 15 is connected below the lower steel plate 8 via bolts 13 and nuts 14. Bolts 13 and nuts 14 are M36 grade 10.8. The lower portions of the fixing steel plate 15 and bolts 13 are embedded in the concrete of the lower foundation 2. A grouting layer 9 with a thickness of 20mm is provided between the lower steel plate 8 and the lower foundation 2. When rotation is required, it is cut from above the second and third fastening plates 6 and 7 of the I-beam 3 to achieve rotation.

[0030] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A shear-resistant device for rotating bridge piers, characterized in that: The structure includes two parallel H-beams (3), the upper back sides of which are connected by a first snap-on plate (5), the lower front and back sides of which are connected by a second snap-on plate (6) and a third snap-on plate (7) respectively, the top and bottom ends of which are connected by an upper steel plate (4) and a lower steel plate (8) respectively, and an embedded steel plate (10) is connected to the upper front of which the embedded steel plate (10) has several layers of two opposing structures connected to its front. The two thick reinforcing plates (11) are connected to the front of the two thick reinforcing plates (11) by end plates (12). The lower steel plate (8) is connected to a fixing steel plate (15) by bolts (13) and nuts (14). The thick reinforcing plates (11) and end plates (12) are embedded in the concrete of the upper foundation (1). The fixing steel plate (15) and the lower part of the bolts (13) are embedded in the concrete of the lower foundation (2). A grouting layer (9) is provided between the lower steel plate (8) and the lower foundation (2).

2. The shear-resistant device for rotating bridge piers according to claim 1, characterized in that: The I-beam (3) has reinforcing ribs (16) on both sides.

3. The rotating pier shear-resistant device according to claim 2, characterized in that: The reinforcing ribs (16) are in two sets, located at the upper and lower positions inside the I-beam (3).

4. The shear-resistant device for rotating bridge piers according to claim 1, characterized in that: The first buckle plate (5), the second buckle plate (6) and the third buckle plate (7) are connected to the I-beam (3) by welding.

5. The shear-resistant device for rotating bridge piers according to claim 1, characterized in that: The bolt (13) and nut (14) are M36 grade 10.

8.

6. The shear-resistant device for rotating bridge piers according to claim 1, characterized in that: The number of layers of the thick stiffening plate (11) is 8 to 10.

7. The shear-resistant device for rotating bridge piers according to claim 2, characterized in that: The thickness of the reinforcing rib (16) is 20 mm.

8. The shear-resistant device for rotating bridge piers according to claim 1, characterized in that: The thickness of the grouting layer (9) is 20 mm.

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