Anchoring devices and installation methods for bridge bearings

Abstract

This invention relates to the field of bridge structure construction, specifically disclosing an anchoring device and installation method for bridge bearings. The anchoring and rust-prevention mechanism includes: an outer sleeve and a rust-prevention plate. The outer sleeve includes: a first cover plate and a second cover plate. A spring is installed between the second cover plate and the first cover plate. A clamping groove is provided on the outer side of the outer sleeve. The bridge bearing includes: a top plate and a bottom plate. A steel cylinder connects the top plate and the bottom plate. An anchoring bolt is installed inside the sleeve. A bridge pier is installed above the top plate on the outer side of the anchoring bolt. The anchoring and rust-prevention mechanism uses a metal material with higher metal reactivity than the bridge bearing. Therefore, when it is connected as a whole with the bridge bearing and the sleeve, the whole structure can form a galvanic cell structure in a humid environment. Thus, when the anchoring structure and the bridge bearing corrode, the anchoring and rust-prevention mechanism can be used as a replacement.

Description

Technical Field

[0001] This invention relates to the field of bridge structure construction, specifically to anchoring devices for bridge bearings and methods for installing bridge bearings. Background Technology

[0002] Bridge bearings are crucial structural components connecting the superstructure and substructure of a bridge. Located between the bridge deck and the bearing pad, they reliably transfer the loads and deformations (displacement and rotation) borne by the superstructure to the substructure, serving as a vital force transmission device. There are two types: fixed bearings and movable bearings. Commonly used bearing types in bridge engineering include: felt or flat plate bearings, plate rubber bearings, spherical bearings, steel bearings, and special bearings. The arrangement of bridge bearings is primarily determined by the bridge's structural type and width. Simply supported beam bridges typically have fixed bearings at one end and movable bearings at the other. Railway bridges, due to their narrower width and minimal lateral bearing displacement, generally only require unidirectional (longitudinal) movable bearings. Highway beam bridges, with their wider decks, must consider the possibility of lateral bearing movement. Reinforcing steel anchorage refers to the process of encasing the reinforcing steel in concrete, strengthening the connection between the concrete and the steel, making the structure more robust, and enabling both to work together to withstand various stresses.

[0003] However, since bridge bearings are connected to the bridge structure through anchoring devices, the humid climate in daily environments can easily cause corrosion between the bridge bearings and the anchoring devices, making them impossible to disassemble. Summary of the Invention

[0004] To address the existing problems, the present invention provides an anchoring device for bridge bearings and a method for installing bridge bearings. When used in conjunction with the above, this device can effectively solve the problems mentioned in the background art.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] An anchoring device for a bridge bearing includes a bridge bearing and an anchoring and anti-rust mechanism for installing the bridge bearing. A bridge pier is provided above the bridge bearing, and a bridge body is provided below the bridge bearing. The anchoring and anti-rust mechanism is installed on the outside of the bridge bearing and then anchored to the bridge pier and the bridge body.

[0007] The bridge support includes a top plate and a bottom plate. A steel cylinder connects the top plate and the bottom plate. A sliding plate is installed inside the steel cylinder below the top plate. A middle steel plate is installed on the lower surface of the sliding plate. An upper friction plate is installed on the lower surface of the middle steel plate. Sleeves are installed inside both the top plate and the bottom plate. An anchor bolt is installed inside the sleeve. A bridge pier is installed on the outside of the anchor bolt above the top plate.

[0008] The anchoring and rust prevention mechanism includes: an outer sleeve and a rust-proof plate. The outer sleeve includes: a first cover plate and a second cover plate. A spring is installed between the second cover plate and the first cover plate. A clamping groove is provided on the outer side of the outer sleeve. A heat dissipation through holes are arrayed on the upper surface of the outer sleeve. The anchoring and rust prevention mechanism is made of a metal material with a metal activity greater than that of the bridge bearing.

[0009] As a further embodiment of the present invention: a guide slide is sleeved on the outer side of the central steel plate, and a cold-rolled steel strip is installed on the outer side of the guide slide located on the inner side wall of the top plate.

[0010] As a further embodiment of the present invention: the outer side wall of the anchor bolt is provided with a bolt groove, and the outer side of the anchor bolt is provided with anchoring through holes both inside the mounting pier and the mounting bridge body.

[0011] As a further embodiment of the present invention: a support plate is provided on the outer side of the top plate and the bottom plate, a hook is installed on the side surface of the support plate, and fastening bolts are used to connect the top plate and the bottom plate to the support plate.

[0012] As a further embodiment of the present invention: a rubber plate is installed below the upper friction plate inside the base plate, a lower liner is installed on the upper surface of the rubber plate, a lower friction plate is installed on the upper surface of the lower liner, and a damping rubber ring is sleeved on the outer side of the lower friction plate.

[0013] As a further aspect of the present invention, the bridge support is a stainless steel component.

[0014] As a further embodiment of the present invention, a drainage groove is provided on the upper surface of the top plate.

[0015] As a further embodiment of the present invention: the first cover plate and the second cover plate are fixedly connected by the spring, and the spring is fixedly connected to the rust-proof plate.

[0016] As a further aspect of the present invention, the inner diameter of the outer sleeve is greater than the outer diameter of the anchor bolt.

[0017] The bridge bearing installation method described above includes the following steps:

[0018] Step 1: Prepare the foundation for the installation of the bridge piers and bridge body, including but not limited to the following steps: clean the debris from the foundation surface to ensure the surface is flat, check the verticality and horizontality of the foundation and make adjustments if necessary, apply a waterproof layer to the surface of the bridge piers and bridge body according to the design requirements and ensure the integrity of the waterproof layer, and connect the anchoring and anti-rust mechanism as a whole to the outside of the sleeve on the outside of the top plate and bottom plate, pull the first cover plate outward to deform the spring, thereby increasing the inner diameter of the entire sleeve outer tube, and fit the first cover plate and the second cover plate as a whole onto the outside of the anchor bolt, so that the anchoring and anti-rust mechanism and the entire bridge support form a whole;

[0019] Step 2: Install the bridge bearing as a whole. Use lifting machinery to hoist the bridge bearing to the predetermined position and connect it with the bridge pier. Securely fix the bridge bearing to the foundation to prevent movement or rotation. Set the shims and bolts of the bridge bearing for tightening. Check the installation of the bridge bearing to ensure that its verticality and horizontality meet the requirements.

[0020] Step 3: After the bridge bearings are installed, inspection and testing are required to ensure their quality and proper function. Check the tightness of the anchoring and anti-rust mechanism and anchor bolts, inspect the tightness of the bridge bearings to ensure that the bolts are not loose, check whether the verticality and horizontality of the bridge bearings meet the design requirements, conduct load tests to simulate the load under actual operating conditions, and evaluate the bearing capacity and deformation of the bridge bearings.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The anchoring and rust prevention mechanism uses a metal material with higher metal activity than the bridge bearing. Therefore, when it is connected to the bridge bearing and sleeve as a whole, the whole can form a galvanic cell structure in a humid environment. Thus, when the anchoring structure and the bridge bearing rust, the anchoring and rust prevention mechanism can be used as a replacement.

[0023] 2. By connecting the anchoring and rust prevention mechanism as a whole to the outside of the sleeve on the outside of the top plate and bottom plate, the first cover plate is pulled outward to deform the spring, thereby increasing the inner diameter of the outer sleeve of the entire sleeve. The first cover plate and the second cover plate are then fitted onto the outside of the anchor bolt, ensuring tight contact between the anchoring and rust prevention mechanism, the sleeve, and the anchor bolt, and avoiding gaps that would prevent the protection from being achieved. Attached Figure Description

[0024] Fig. 1 A structural schematic diagram of the anchoring device and installation method of bridge bearings;

[0025] Fig. 2This is a sectional view of the bridge bearing after installation, as shown in the anchoring device and installation method of the bridge bearing.

[0026] Fig. 3 This is a structural schematic diagram of the anchoring device and the anti-rust mechanism in the bridge bearing installation method.

[0027] Fig. 4 This is a sectional view of a bridge bearing in the context of bridge bearing anchorage devices and bridge bearing installation methods.

[0028] Fig. 5 This is a partial enlarged view of the anchoring device and the anti-rust mechanism in the bridge bearing installation method.

[0029] Fig. 6 This is a partial enlarged view of a bridge bearing in the context of bridge bearing anchoring devices and bridge bearing installation methods.

[0030] In the diagram: 1. Bridge bearing; 2. Top plate; 3. Bottom plate; 4. Steel cylinder; 5. Support plate; 6. Hook; 7. Sleeve; 8. Anchor bolt; 9. Anchoring and rust prevention mechanism; 101. Install pier; 102. Install bridge body; 103. Anchoring perforation; 501. Fastening bolt; 201. Slide plate; 202. Cold-rolled steel bar; 203. Guide slide bar; 204. Middle steel plate; 205. Upper friction plate; 206. Drainage channel; 301. Rubber plate; 302. Lower lining plate; 303. Lower friction plate; 304. Damping rubber ring; 801. Bolt groove; 901. Sleeve outer sleeve; 902. Rust prevention plate; 903. First cover plate; 904. Second cover plate; 905. Spring; 906. Clamp groove. Detailed Implementation

[0031] The present invention will be further described below with reference to specific inventions. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0032] In the description of this specification, references to terms such as "this embodiment," "some embodiments," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] like Figs. 1-6As shown, this embodiment provides an anchoring device for a bridge bearing, including a bridge bearing 1 and an anchoring and anti-rust mechanism 9 for installing the bridge bearing 1. The bridge bearing 1 is a stainless steel component. A bridge pier 101 is installed above the bridge bearing 1, and a bridge body 102 is installed below the bridge bearing 1. The anchoring and anti-rust mechanism 9 is installed on the outside of the bridge bearing 1 and then anchored to the bridge pier 101 and the bridge body 102. The bridge bearing 1 includes a top plate 2 and a bottom plate 3. A steel cylinder 4 connects the top plate 2 and the bottom plate 3. The upper surface of the top plate 2... A drainage groove 206 is provided on the surface. A sliding plate 201 is installed inside the steel cylinder 4 below the top plate 2. A middle steel plate 204 is installed on the lower surface of the sliding plate 201. An upper friction plate 205 is installed on the lower surface of the middle steel plate 204. Sleeves 7 are installed inside both the top plate 2 and the bottom plate 3. Anchor bolts 8 are provided inside the sleeves 7. A bridge pier 101 is installed on the outside of the anchor bolts 8 above the top plate 2. The anchoring and anti-rust mechanism 9 includes: an outer sleeve 901 and an anti-rust plate 902. The outer sleeve 901 includes: a first cover plate 903. A second cover plate 904 is connected to a first cover plate 903 by a spring 905. A clamping groove 906 is provided on the outer side of the sleeve outer sleeve 901. Heat dissipation holes are arrayed on the upper surface of the sleeve outer sleeve 901. The anchoring and rust-prevention mechanism 9 uses a metal material with higher metal activity than the bridge bearing 1. A guide strip 203 is sleeved on the outer side of the central steel plate 204. A cold-rolled steel strip 202 is installed on the outer side of the guide strip 203, located on the inner wall of the top plate 2. A bolt groove 801 is provided on the outer wall of the anchor bolt 8. Anchoring holes 103 are provided inside the pier 101 and the bridge body 102. Support plates 5 are provided on the outer side of the top plate 2 and the bottom plate 3. Hooks 6 are installed on the side surface of the support plates 5. Fastening bolts 501 are connected between the top plate 2 and the bottom plate 3 and the support plates 5. A rubber plate 301 is installed below the upper friction plate 205 inside the bottom plate 3. A lower liner plate 302 is installed on the upper surface of the rubber plate 301. A lower friction plate 303 is installed on the upper surface of the lower liner plate 302. A damping rubber ring 304 is sleeved on the outer side of the lower friction plate 303.

[0034] like Figs. 1-6 As shown, the bridge bearing installation method described above includes the following steps:

[0035] Step 1: Process the installation foundation for the pier 101 and the bridge body 102, including but not limited to the following steps: clean the debris on the foundation surface to ensure the surface is flat, check the verticality and horizontality of the foundation and make adjustments if necessary, apply a waterproof layer to the surface of the pier 101 and the bridge body 102 according to the design requirements and ensure the integrity of the waterproof layer, connect the anchoring and anti-rust mechanism 9 as a whole to the outside of the sleeve 7 on the outside of the top plate 2 and the bottom plate 3, pull the first cover plate 903 outward to deform the spring 905, thereby increasing the inner diameter of the outer sleeve 901 of the entire sleeve, and fit the first cover plate 903 and the second cover plate 904 as a whole onto the outside of the anchor bolt 8, so that the anchoring and anti-rust mechanism 9 and the entire bridge support 1 form a whole;

[0036] Step 2: Install the bridge bearing 1 as a whole. Use cranes to lift the bridge bearing 1 to the predetermined position and connect it with the bridge pier 101. Secure the bridge bearing 1 firmly on the foundation to prevent movement or rotation. Set the shims and bolts of the bridge bearing 1 for tightening. Check the installation of the bridge bearing 1 to ensure that its verticality and horizontality meet the requirements.

[0037] Step 3: After the installation of bridge bearing 1 is completed, inspection and testing are required to ensure that the quality and function of bridge bearing 1 are normal. Check whether the contact between the anchoring and anti-rust mechanism 9 and the anchoring bolts 8 is tight, check the tightness of bridge bearing 1 to ensure that the bolts are not loose, check whether the verticality and horizontality of bridge bearing 1 meet the design requirements, conduct load tests to simulate the load under actual operating conditions, and evaluate the bearing capacity and deformation of bridge bearing 1.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An anchoring device for bridge bearings, characterized in that, The system includes a bridge bearing (1) and an anchoring and anti-rust mechanism (9) for installing the bridge bearing (1). A bridge pier (101) is provided above the bridge bearing (1), and a bridge body (102) is provided below the bridge bearing (1). The anchoring and anti-rust mechanism (9) is installed on the outside of the bridge bearing (1) and then anchored to the bridge pier (101) and the bridge body (102). The bridge support (1) includes: a top plate (2) and a bottom plate (3). A steel cylinder (4) is connected between the top plate (2) and the bottom plate (3). A sliding plate (201) is installed inside the steel cylinder (4) below the top plate (2). A middle steel plate (204) is installed on the lower surface of the sliding plate (201). An upper friction plate (205) is installed on the lower surface of the middle steel plate (204). A sleeve (7) is installed inside both the top plate (2) and the bottom plate (3). An anchor bolt (8) is provided inside the sleeve (7). A bridge pier (101) is installed on the outside of the anchor bolt (8) above the top plate (2). The anchoring and rust prevention mechanism (9) includes: sleeve outer sleeve (901) and rust prevention plate (902). The sleeve outer sleeve (901) includes: first cover plate (903) and second cover plate (904). A spring (905) is installed between the second cover plate (904) and the first cover plate (903). A clamping groove (906) is opened on the outer side of the sleeve outer sleeve (901). A heat dissipation through hole is arrayed on the upper surface of the sleeve outer sleeve (901). The anchoring and rust prevention mechanism (9) is made of a metal material with greater metal activity than the bridge bearing (1). By connecting the sleeve outer tube (901) of the anchoring and rust prevention mechanism (9) to the outside of the sleeve (7) on the outside of the top plate (2) and the bottom plate (3), and setting the rust prevention plate (902) on the upper side of the top plate (2), the anchoring and rust prevention mechanism (9) can form a galvanic cell structure for rust prevention in a humid environment after being connected to the bridge support (1) and the sleeve (7).

2. The anchoring device for bridge bearings according to claim 1, characterized in that, A guide strip (203) is sleeved on the outer side of the central steel plate (204), and a cold-rolled steel strip (202) is installed on the outer side of the guide strip (203) on the inner side wall of the top plate (2).

3. The anchoring device for bridge bearings according to claim 1, characterized in that, The outer side wall of the anchor bolt (8) is provided with a bolt groove (801), and the outer side of the anchor bolt (8) is provided with anchoring through holes (103) inside the installation pier (101) and the installation bridge body (102).

4. The anchoring device for bridge bearings according to claim 1, characterized in that, A support plate (5) is provided on the outer side of the top plate (2) and the bottom plate (3). A hook (6) is installed on the side surface of the support plate (5). A fastening bolt (501) is connected between the top plate (2) and the bottom plate (3) and the support plate (5).

5. The anchoring device for bridge bearings according to claim 1, characterized in that, A rubber plate (301) is installed below the upper friction plate (205) inside the base plate (3). A lower liner plate (302) is installed on the upper surface of the rubber plate (301). A lower friction plate (303) is installed on the upper surface of the lower liner plate (302). A damping rubber ring (304) is sleeved on the outer side of the lower friction plate (303).

6. The anchoring device for bridge bearings according to claim 1, characterized in that, The bridge support (1) is a stainless steel component.

7. The anchoring device for bridge bearings according to claim 1, characterized in that, The top plate (2) has a drainage groove (206) on its upper surface.

8. The anchoring device for bridge bearings according to claim 1, characterized in that, The first cover plate (903) and the second cover plate (904) are fixedly connected by the spring (905).

9. The anchoring device for bridge bearings according to claim 8, characterized in that, The inner diameter of the sleeve outer sleeve (901) is greater than the outer diameter of the anchor bolt (8).

10. The installation method of the anchoring device for bridge bearings as described in claim 3, characterized in that, The steps include the following: Step 1: The installation foundations for the pier (101) and the bridge body (102) are processed, including the following steps: clean the debris on the foundation surface, ensure the surface is flat, check the verticality and horizontality of the foundation, and make adjustments if necessary. According to the design requirements, apply a waterproof layer to the surface of the pier (101) and the bridge body (102) and ensure the integrity of the waterproof layer. By connecting the anchoring and anti-rust mechanism (9) as a whole to the outside of the sleeve (7) on the outside of the top plate (2) and the bottom plate (3), pull the first cover plate (903) as a whole to the outside so that the spring (905) deforms, thereby increasing the inner diameter of the outer sleeve (901) of the entire sleeve. Connect the first cover plate (903) and the second cover plate (904) as a whole to the outside of the anchor bolt (8), so that the anchoring and anti-rust mechanism (9) and the entire bridge support (1) form a whole. Step 2: Install the bridge bearing (1) as a whole. Use a crane to lift the bridge bearing (1) to the predetermined position and connect it with the pier (101). Secure the bridge bearing (1) firmly on the foundation to prevent movement or rotation. Set the shims and bolts of the bridge bearing (1) for tightening. Check the installation of the bridge bearing (1) to ensure that its verticality and horizontality meet the requirements. Step 3: After the installation of the bridge bearing (1) is completed, it is necessary to inspect and test it to ensure that the quality and function of the bridge bearing (1) are normal. Check whether the contact between the anchoring and anti-rust mechanism (9) and the anchoring bolts (8) is tight, check the tightness of the bridge bearing (1) to ensure that the bolts are not loose, check whether the verticality and horizontality of the bridge bearing (1) meet the design requirements, conduct load tests, simulate the load action under actual operating conditions, and evaluate the bearing capacity and deformation of the bridge bearing (1).

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