Bridge rubber bearing load dispersion structure

Abstract

This utility model relates to the field of bridge bearings, specifically disclosing a load-distributing structure for a bridge rubber bearing. The bridge bearing includes an upper connecting steel plate and a lower connecting steel plate. A protective sleeve is installed on the upper surface of the lower connecting steel plate below the upper connecting steel plate. A shock-absorbing mechanism is installed inside the protective sleeve, and rubber pads are arranged in an array inside the shock-absorbing mechanism. An inner steel plate is installed between two adjacent rubber pads. Ribs are arranged in an array on both the upper and lower surfaces of the inner steel plate. Connecting lugs are arranged in an array on the outer wall of the protective sleeve. Diagonal braces are provided on the lower surface of the upper connecting steel plate and the upper surface of the lower connecting steel plate. When a vertically downward force is applied to the upper connecting steel plate, the load on the side surface of the shock-absorbing mechanism is applied to the inner wall of the protective sleeve. The diagonal braces, which cross-support the outer side of the protective sleeve, prevent the protective sleeve from deforming under radial expansion and compression forces when the load is too large.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearings, specifically a load-distributing structure for bridge rubber bearings. Background Technology

[0002] Bridge rubber bearings are made of multiple layers of rubber sheets and thin steel plates vulcanized and bonded together. They have sufficient vertical stiffness to reliably transfer the reaction force of the superstructure to the piers and abutments; good elasticity to accommodate the rotation of the beam ends; and large shear deformation capacity to meet the horizontal displacement of the superstructure. By bonding a layer of polytetrafluoroethylene (PTFE) sheet to the surface of the plate rubber bearing, a PTFE sliding plate rubber bearing can be made. In addition to its vertical stiffness and elastic deformation, which allow it to withstand vertical loads and accommodate beam end rotation, the low coefficient of friction of the PTFE sheet allows the beam ends to slide freely on the PTFE surface, with unrestricted horizontal displacement. This makes it particularly suitable for bridges with medium to small loads and large displacements. Bridge rubber bearings not only have excellent technical performance but also feature simple construction, low cost, no maintenance required, easy replacement, shock absorption, and low construction height. Therefore, they are very popular in the bridge industry and widely used.

[0003] However, because existing plate rubber bearings generate outward expansion stress when under pressure, the internal rubber is prone to uneven load damage. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a load-distributing structure for bridge rubber bearings, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a load-distributing structure for a bridge rubber bearing, comprising a bridge bearing, the bridge bearing comprising: an upper connecting steel plate and a lower connecting steel plate, a protective sleeve being provided on the upper surface of the lower connecting steel plate below the upper connecting steel plate, a shock-absorbing mechanism being provided inside the protective sleeve, rubber pads being arranged in an array inside the shock-absorbing mechanism, an inner steel plate being installed between two adjacent rubber pads, ribs being arranged in an array on both the upper and lower surfaces of the inner steel plate, connecting lugs being arranged in an array on the outer wall of the protective sleeve, and diagonal bracing rods being provided on both the lower surface of the upper connecting steel plate and the upper surface of the lower connecting steel plate.

[0006] As a further improvement of this utility model: a fixing hole is installed between the diagonal brace and the upper connecting steel plate and the lower connecting steel plate, and an anchor rod is installed on the side of the upper connecting steel plate and the lower connecting steel plate away from the protective sleeve.

[0007] As a further improvement of this utility model: the upper end of the shock-absorbing mechanism is equipped with an upper sealing plate inside the protective sleeve, and the lower end of the shock-absorbing mechanism is equipped with a lower sealing plate inside the protective sleeve.

[0008] As a further improvement of this utility model: the diagonal brace is movably connected to the upper connecting steel plate and the lower connecting steel plate through the fixed insertion hole.

[0009] As a further improvement of this utility model: the connecting ear plate is fixedly connected to the protective sleeve, and the diagonal brace is fitted with a locking bolt to the connecting ear plate.

[0010] As a further improvement of this utility model, sleeves are installed inside the upper connecting steel plate and the lower connecting steel plate at positions corresponding to the anchor rods.

[0011] As a further improvement of this utility model: a reinforcing ring is installed on the outer side of the shock absorption mechanism located on the inner wall of the protective sleeve.

[0012] As a further improvement of this utility model, both the lower sealing plate and the upper sealing plate are flat plate structural components.

[0013] Compared with the prior art, the beneficial effects of this utility model are: When a vertical downward force is applied to the upper part of the connecting steel plate, the load on the side surface of the damping mechanism will be applied to the inner wall of the protective sleeve. Therefore, the diagonal bracing rods that are cross-braced on the outside of the protective sleeve can prevent the protective sleeve from deforming under radial expansion and compression forces when the load is too large, thus preventing the internal damping mechanism from failing.

[0014] The ribs arranged in an array on the upper and lower surfaces of the built-in steel plate can be used to evenly distribute the pressure onto the rubber pad, thereby reducing the deformation of the rubber pad under pressure. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a load-distributing structure for a bridge rubber bearing. Figure 2 This is a side view of a bridge bearing in a load-distributing structure for bridge rubber bearings. Figure 3 This is a cross-sectional view of a bridge bearing in a load-distribution structure for bridge rubber bearings. Figure 4 This is a schematic diagram of a vibration damping mechanism in a load-distributing structure for bridge rubber bearings. Figure 5 This is a schematic diagram of the diagonal brace in a load-distributing structure for bridge rubber bearings.

[0016] In the diagram: 1. Bridge bearing; 2. Upper connecting steel plate; 3. Lower connecting steel plate; 4. Protective sleeve; 5. Anchor bolt; 6. Diagonal brace; 401. Connecting lug; 402. Vibration damping mechanism; 403. Rubber pad; 404. Internal steel plate; 405. Lower sealing plate; 406. Upper sealing plate; 407. Rib; 601. Fixing hole. Detailed Implementation

[0017] 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.

[0018] like Figure 1-5 As shown, this embodiment provides a load-distributing structure for a bridge rubber bearing, including a bridge bearing 1. The bridge bearing 1 includes an upper connecting steel plate 2 and a lower connecting steel plate 3. A protective sleeve 4 is provided on the upper surface of the lower connecting steel plate 3 below the upper connecting steel plate 2. A damping mechanism 402 is provided inside the protective sleeve 4. A reinforcing ring is installed on the outer side of the damping mechanism 402 on the inner side wall of the protective sleeve 4. Rubber pads 403 are arranged in an array inside the damping mechanism 402. An inner steel plate 404 is installed between two adjacent rubber pads 403. Ribs 407 are arranged in an array on both the upper and lower surfaces of the inner steel plate 404. Connecting ear plates 401 are arranged in an array on the outer side wall of the protective sleeve 4. The connecting ear plates 401 are fixedly connected to the protective sleeve 4. A locking bolt is installed between the diagonal brace 6 and the connecting ear plate 401. Diagonal braces 6 are provided on the lower surface of the upper connecting steel plate 2 and the upper surface of the lower connecting steel plate 3.

[0019] like Figure 2-3 As shown, in this embodiment, the diagonal brace 6 is installed with a fixing hole 601 between the upper connecting steel plate 2 and the lower connecting steel plate 3. The diagonal brace 6 is movably connected to the upper connecting steel plate 2 and the lower connecting steel plate 3 through the fixing hole 601. Anchor rods 5 are installed on the side of the upper connecting steel plate 2 and the lower connecting steel plate 3 that is away from the protective sleeve 4. Sleeves are installed inside the upper connecting steel plate 2 and the lower connecting steel plate 3 at the positions corresponding to the anchor rods 5. The upper end of the shock absorption mechanism 402 is installed with an upper sealing plate 406 inside the protective sleeve 4, and the lower end of the shock absorption mechanism 402 is installed with a lower sealing plate 405 inside the protective sleeve 4. Both the lower sealing plate 405 and the upper sealing plate 406 are flat plate structural components.

[0020] The working principle of this utility model is as follows: During use, after the multi-layer rubber pad 403 and the inner steel plate 404 are staggered and stacked, the ribs 407 arrayed on the upper and lower surfaces of the inner steel plate 404 can evenly distribute the pressure onto the rubber pad 403, reducing deformation of the rubber pad 403. After the shock-absorbing mechanism 402 is vulcanized and bonded as a whole, the upper and lower sealing plates 405 are placed inside the protective sleeve 4. The shock-absorbing mechanism 402 is then placed above the lower sealing plate 405, and the upper sealing plate 406 is placed above the shock-absorbing mechanism 402. After the upper connecting steel plate 2 and the lower connecting steel plate 3 are installed, the diagonal bracing rods 6 below the upper connecting steel plate 2 and above the lower connecting steel plate 3 are rotated using the fixed insertion holes 601. With the free end of the diagonal brace 6 aligned with the connecting lug 401 on the outer wall of the protective sleeve 4, and the limiting bolts inserted into the connecting lug 401 from the inside of the fixing hole 601 for fixation, the diagonal brace 6 between the upper connecting steel plate 2 and the lower connecting steel plate 3 presents an interlaced support method. Therefore, it can strengthen the support of the side of the protective sleeve 4. When the upper connecting steel plate 2 is subjected to a vertically downward force, the damping mechanism 402 will distribute the load as a whole, and the load on the side surface of the damping mechanism 402 will be applied to the inner wall of the protective sleeve 4. Therefore, the diagonal brace 6 cross-supported on the outside of the protective sleeve 4 can prevent the protective sleeve 4 from deforming under radial expansion and compression force when the load is too large, thus preventing the internal damping mechanism 402 from failing.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A load-distributing structure for bridge rubber bearings, comprising a bridge bearing (1), characterized in that, The bridge support (1) includes: an upper connecting steel plate (2) and a lower connecting steel plate (3). A protective sleeve (4) is provided on the upper surface of the lower connecting steel plate (3) below the upper connecting steel plate (2). A shock-absorbing mechanism (402) is provided inside the protective sleeve (4). Rubber pads (403) are arranged in an array inside the shock-absorbing mechanism (402). An internal steel plate (404) is installed between two adjacent rubber pads (403). Ribs (407) are arranged in an array on both the upper and lower surfaces of the internal steel plate (404). Connecting ear plates (401) are arranged in an array on the outer side wall of the protective sleeve (4). Diagonal braces (6) are provided on the lower surface of the upper connecting steel plate (2) and the upper surface of the lower connecting steel plate (3).

2. The load-distributing structure for bridge rubber bearings according to claim 1, characterized in that, The diagonal brace (6) is provided with a fixing hole (601) between it and the upper connecting steel plate (2) and the lower connecting steel plate (3). Anchor rods (5) are provided on the side of the upper connecting steel plate (2) and the lower connecting steel plate (3) that is away from the protective sleeve (4).

3. The load-distributing structure for bridge rubber bearings according to claim 1, characterized in that, The upper end of the shock-absorbing mechanism (402) is located inside the protective sleeve (4) and an upper sealing plate (406) is installed thereon. The lower end of the shock-absorbing mechanism (402) is located inside the protective sleeve (4) and a lower sealing plate (405) is installed thereon.

4. The load-distributing structure for bridge rubber bearings according to claim 2, characterized in that, The diagonal brace (6) is movably connected to the upper connecting steel plate (2) and the lower connecting steel plate (3) through the fixed insertion hole (601).

5. The load-distributing structure for bridge rubber bearings according to claim 1, characterized in that, The connecting ear plate (401) is fixedly connected to the protective sleeve (4), and the diagonal brace (6) is fitted with a locking bolt to the connecting ear plate (401).

6. The load-distributing structure for bridge rubber bearings according to claim 2, characterized in that, The upper connecting steel plate (2) and the lower connecting steel plate (3) are each fitted with a sleeve corresponding to the position of the anchor rod (5).

7. The load-distributing structure for bridge rubber bearings according to claim 1, characterized in that, A reinforcing ring is installed on the outer side of the shock absorption mechanism (402) on the inner wall of the protective sleeve (4).

8. The load-distributing structure for bridge rubber bearings according to claim 3, characterized in that, Both the lower sealing plate (405) and the upper sealing plate (406) are flat plate structural components.

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