Assembled bridge seismic anchor device

Abstract

The utility model discloses an assembled bridge anti-seismic anchor device, which comprises: a steel sleeve, an anchor rod is fixedly connected to the inner surface of the steel sleeve, a reinforcing rod is fixedly connected to the inner surface of the steel sleeve, the upper surface of the steel sleeve is fixedly connected to the bridge body, the inner wall of the mounting plate is fixedly connected to a fixing plate, a spring is arranged on the side surface of the fixing plate, the side surface of the limit block is fixedly connected to a connecting rod, the outer surface of the connecting rod is connected to the spring sleeve, and the overall strength of the steel sleeve can be enhanced by arranging the reinforcing rod. When the bridge is subjected to a certain earthquake, the deformation of the bridge is mainly concentrated on the upper part of the anchor rod, which is enough to consume the energy of the earthquake, thereby enhancing the anti-seismic performance of the bridge; the spring arranged on the fixing plate can push the limit block to be inserted into the limit hole, and the arranged movable block can play a limiting role, which can effectively reduce the excessive movement of the limit block.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge earthquake resistance, in particular to an assembled bridge earthquake resistance anchor bolt device. Background Art

[0002] There are many types of bridges in my country, especially beam bridges (such as T-beam, box beam, and plate beam) are the most widely used. In the design and construction of beam bridges, not only prestressing, concrete shrinkage and creep effects, but also earthquake effects must be considered. The seismic performance of the bridge needs to meet specific requirements to ensure the smooth flow of life transportation lines.

[0003] The existing main beam and bridge piers are simply connected by gravity with rubber bearings. This connection method is suitable under normal operation conditions, but in the event of an earthquake, the main beam is prone to large displacement or even falling. For example, a Chinese patent discloses "a new type of seismic anchor bolt for bridges", and its application number is: "CN201720763919.5", which includes: a steel pipe sleeve, a pre-buried anchor bolt, a round steel sheet and a spring. The device structure is prone to large displacement or even falling of the main beam in the event of an earthquake, and its applicability is relatively limited. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an assembled bridge seismic anchor device. The device can enhance the overall strength of the steel sleeve by arranging a reinforcing rod. When the bridge is subjected to a certain earthquake, the horizontal stiffness of the bridge is deformed along any horizontal direction, so that the deformation of the bridge is mainly concentrated on the upper part of the anchor rod, which is enough to consume the energy of the earthquake, thereby enhancing the seismic performance of the bridge. The spring arranged on the fixed plate can push the limit block to be inserted into the limit hole, and the movable block arranged can play a role of limiting, which can effectively reduce the excessive movement of the limit block.

[0005] The utility model also provides an assembled bridge seismic anchor device as mentioned above, comprising: a steel sleeve, an anchor rod is fixedly connected to the inner surface of the steel sleeve, a reinforcing rod is fixedly connected to the inner surface of the steel sleeve, and a wear-resistant shell is arranged on the outer surface of the steel sleeve; through the mutual cooperation between the above parts, the overall strength of the steel sleeve can be enhanced, and when the bridge is subjected to a certain earthquake, the horizontal stiffness of the bridge is deformed along any horizontal direction, so that the deformation of the bridge is mainly concentrated on the upper part of the anchor rod, which is enough to consume the energy of the earthquake, thereby enhancing the seismic performance of the bridge.

[0006] The upper surface of the steel sleeve is fixedly connected to the bridge body, the inner surface of the bridge body is provided with a limiting hole, the upper surface of the steel sleeve is fixedly connected to the mounting plate, the side surface of the mounting plate is fixedly connected to the limiting block, the inner wall of the mounting plate is fixedly connected to the fixing plate, the side surface of the fixing plate is provided with a spring, the side surface of the limiting block is fixedly connected to a connecting rod, and the outer surface of the connecting rod is connected to the spring sleeve. Through the mutual cooperation between the above parts, the limiting block can be pushed to be inserted into the limiting hole, and the movable block provided can play a limiting role.

[0007] According to the utility model, the assembled bridge earthquake-resistant anchor device has a concrete structure fixedly connected to the lower surface of the steel sleeve, and the bottom end of the anchor rod is cast on the inner surface of the concrete structure. The above parts cooperate with each other to facilitate fixation.

[0008] According to the utility model, the inner surface of the steel sleeve is provided with asphalt paste, which is an elastic-plastic sealing material prepared by using petroleum asphalt as a base material, adding a softener and a filling material. Through the mutual cooperation between the above parts, it has good waterproof and leakproof properties, and has good anti-corrosion and anti-mildew properties.

[0009] According to the utility model, the inner surface of the steel sleeve is coated with an anti-corrosion layer, and the material of the anti-corrosion layer is epoxy powder coating. Through the mutual cooperation between the above parts, it has good corrosion resistance and improves the service life of the steel sleeve.

[0010] According to the utility model, the first movable block and the second movable block are fixedly connected to the two ends of the spring. The above parts cooperate with each other to play a role of limiting, which can effectively reduce excessive movement of the limit block.

[0011] According to the utility model, a prefabricated bridge seismic anchor bolt device is provided with a fixing groove on the lower surface of the limit block, and a fixing block is connected through the inner surface of the fixing groove. Through the mutual cooperation between the above parts, the limit block will not move, which is convenient for the assembly of the seismic anchor bolt.

[0012] According to the utility model, the assembled bridge anti-seismic anchor bolt device is connected to the steel sleeve by welding. Through the mutual cooperation between the above parts, the connection is stable and has good sealing performance.

[0013] According to the utility model, the assembled bridge anti-seismic anchor bolt device is provided, wherein the bridge body, the limit block and the limit hole are connected by a snap fit, and the mutual cooperation between the above parts facilitates installation and disassembly.

[0014] Beneficial Effects

[0015] Compared with the prior art, the utility model can enhance the overall strength of the steel sleeve by arranging a reinforcing rod. When the bridge is subjected to a certain earthquake, the horizontal stiffness of the bridge is deformed along any horizontal direction, so that the deformation of the bridge is mainly concentrated on the upper part of the anchor rod, which is enough to consume the energy of the earthquake, thereby enhancing the seismic performance of the bridge. The spring arranged on the fixed plate can push the limit block to be inserted into the limit hole, and the movable block arranged can play a role of limiting, which can effectively reduce the excessive movement of the limit block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is the overall structural diagram of the utility model of the assembled bridge seismic anchor device;

[0018] Figure 2 This is the internal structure diagram of the mounting plate of the utility model assembled bridge seismic anchor device;

[0019] Figure 3 This is a structural diagram of the steel sleeve installation of the utility model's assembled bridge seismic anchor device;

[0020] Figure 4 This is a diagram showing the internal structure of the steel sleeve of the utility model's assembled bridge seismic anchor device;

[0021] Legend:

[0022] 1. Concrete structure; 2. Steel sleeve; 3. Anchor rod; 4. Asphalt paste; 5. Anti-corrosion layer; 6. Reinforcement rod; 7. Bridge body; 8. Mounting plate; 9. Limiting hole; 10. Fixing plate; 11. Spring; 12. First movable block; 13. Limiting block; 14. Fixing groove; 15. Connecting rod; 16. Second movable block. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4The utility model embodiment is a prefabricated bridge seismic anchor device, which includes: a steel sleeve 2, the inner surface of the steel sleeve 2 is coated with an anti-corrosion layer 5, the material of the anti-corrosion layer 5 is epoxy powder coating, which has good corrosion resistance and improves the service life of the steel sleeve, the inner surface of the steel sleeve 2 is provided with asphalt paste 4, the asphalt paste 4 is an elastic-plastic sealing material prepared with petroleum asphalt as a base material, a softener and a filling material, which has good waterproof and leak-proof properties, and has good anti-corrosion and anti-mildew properties, the lower surface of the steel sleeve 2 is fixedly connected with a concrete structure 1, and the anchor rod 3 is The bottom end is cast on the inner surface of the concrete structure 1 for easy fixation. The inner surface of the steel sleeve 2 is fixedly connected with an anchor rod 3. The anchor rod 3 and the steel sleeve 2 are welded, the connection is stable and has good sealing. The inner surface of the steel sleeve 2 is fixedly connected with a reinforcing rod 6. The outer surface of the steel sleeve 2 is provided with a wear-resistant shell, which can enhance the overall strength of the steel sleeve 2. When the bridge is subjected to a certain earthquake, the horizontal stiffness of the bridge is deformed along any horizontal direction, so that the deformation of the bridge is mainly concentrated on the upper part of the anchor rod 3, which is enough to consume the energy of the earthquake, thereby enhancing the seismic performance of the bridge.

[0025] The upper surface of the steel sleeve 2 is fixedly connected with the bridge body 7, and the bridge body 7, the limit block 13 and the limit hole 9 are snap-fitted and connected, which is convenient for installation and disassembly. The inner surface of the bridge body 7 is provided with a limit hole 9, and the upper surface of the steel sleeve 2 is fixedly connected with the mounting plate 8, and the side surface of the mounting plate 8 is fixedly connected with the limit block 13. The lower surface of the limit block 13 is provided with a fixing groove 14, and the inner surface of the fixing groove 14 is penetrated and connected with a fixing block, so that the limit block 13 will not move, which is convenient for the assembly of the seismic anchor bolts. The inner wall of the mounting plate 8 is fixedly connected with a fixing plate 10, and the side surface of the fixing plate 10 is provided with a spring 11. The two ends of the spring 11 are fixedly connected with a first movable block 12 and a second movable block 16, which can play a role of limiting and can effectively reduce the excessive movement of the limit block 13. The side surface of the limit block 13 is fixedly connected with a connecting rod 15, and the outer surface of the connecting rod 15 is sleeved and connected with the spring 11, which can push the limit block 13 to be inserted into the limit hole 9, and the movable block provided can play a role of limiting.

[0026] Working principle: Before use, the seismic anchor bolt is first cast in the concrete structure 1, and the steel sleeve 2 is inserted into the mounting hole through the mounting hole pre-opened in the bridge body 7, so as to place the seismic anchor bolt. A limiting hole 9 is set in the bridge body 7, and a fixing groove 14 is set on the limiting block 13. The steel sleeve 2 is pushed so that the connecting rod 15 set on the mounting plate 8 can drive the first movable block 12 to move. The spring 11 set on the fixing plate 10 can push the first movable block 12 to move horizontally, driving the limiting block 13 to be inserted into the limiting hole 9, so that the seismic anchor bolt can be limited and fixed. , which can effectively reduce the displacement and falling off of the seismic anchor bolt and improve practicality. The reinforcing rod 6 can enhance the strength of the steel sleeve 2. When the bridge is subjected to a certain earthquake, the anchor rod 3 enters the working state, which can increase the horizontal stiffness of the bridge and deform along any horizontal direction. The deformation of the bridge is mainly concentrated in the upper part of the anchor rod 3, forming a plastic area, which can consume the energy of the earthquake, thereby enhancing the overall seismic performance of the bridge and making the bridge less likely to be damaged by falling beams. The anti-corrosion layer 5 set in the steel sleeve 2 can play an anti-corrosion role, thereby reducing the corrosion of the anchor rod 3 and affecting its service life.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An assembled bridge seismic anchor device, characterized in that: include: A steel sleeve (2), wherein an anchor rod (3) is fixedly connected to the inner surface of the steel sleeve (2), a reinforcing rod (6) is fixedly connected to the inner surface of the steel sleeve (2), and a wear-resistant outer shell is provided on the outer surface of the steel sleeve (2); The upper surface of the steel sleeve (2) is fixedly connected to a bridge body (7), the inner surface of the bridge body (7) is provided with a limiting hole (9), the upper surface of the steel sleeve (2) is fixedly connected to a mounting plate (8), the side surface of the mounting plate (8) is fixedly connected to a limiting block (13), the inner wall of the mounting plate (8) is fixedly connected to a fixing plate (10), the side surface of the fixing plate (10) is provided with a spring (11), the side surface of the limiting block (13) is fixedly connected to a connecting rod (15), and the outer surface of the connecting rod (15) is sleeved and connected with the spring (11).

2. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The lower surface of the steel sleeve (2) is fixedly connected to the concrete structure (1), and the bottom end of the anchor rod (3) is cast on the inner surface of the concrete structure (1).

3. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The inner surface of the steel sleeve (2) is provided with asphalt paste (4), and the asphalt paste (4) is an elastic-plastic sealing material prepared by taking petroleum asphalt as a base material and adding a softener and a filling material.

4. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The inner surface of the steel sleeve (2) is coated with an anti-corrosion layer (5), and the material of the anti-corrosion layer (5) is epoxy powder coating.

5. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The two ends of the spring (11) are fixedly connected to a first movable block (12) and a second movable block (16).

6. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The lower surface of the limiting block (13) is provided with a fixing groove (14), and the inner surface of the fixing groove (14) is penetrated and connected with a fixing block.

7. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The anchor rod (3) and the steel sleeve (2) are connected by welding.

8. The seismic anchor device for assembled bridge according to claim 1, characterized in that: The bridge body (7), the limiting block (13) and the limiting hole (9) are connected by snapping.

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