Rubber / carbon fiber composite plate type bridge support capable of effectively transmitting load

Abstract

The utility model discloses a rubber / carbon fiber composite material plate type bridge support capable of effectively transmitting load, which belongs to the technical field of bridge mechanical parts and comprises a support main body, a bearing surface connected with a bridge floor is arranged at the top of the support main body, and a supporting surface connected with a bridge pier is arranged at the bottom of the support main body; the support main body comprises a rubber elastic body and a multi-layer composite material plate wrapped by the rubber elastic body, and the multi-layer composite material plate and the rubber elastic body are integrally vulcanized and formed; the composite material plate is formed by overlapping a plurality of epoxy resin-rubber blocks, and the plurality of epoxy resin-rubber blocks are connected into a whole through carbon fibers. According to the composite material plate disclosed by the utility model, through the elaborately designed wedge-shaped structure and the reasonable layout of the carbon fibers, the composite material plate has excellent mechanical properties, so that the composite material plates between layers are consistent in deformability and stress distribution conditions, and can show better compression resistance, tensile resistance and bending resistance under a specific load; and the service performance of the support is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge mechanical components, and particularly relates to a rubber / carbon fiber composite plate bridge bearing capable of effectively transmitting loads. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] The bearing is an important connecting structure in the bridge structure, connecting the upper structure of the bridge and the bridge pier, and playing roles such as transmitting loads, damping vibration, resisting the translation of the bridge span structure caused by wind force and live load, and maintaining stability, so as to protect the beam ends and bridge piers from damage.

[0004] The bearing with a rubber elastomer is one of the most commonly used bearing structures in the bridge structure; the rubber elastomer is usually made by inlaying, bonding and pressing multiple layers of rubber sheets and thin steel plates (using steel plates as rigid stiffeners). Due to the existence of two different types of materials, rubber and steel, their deformation capabilities under stress loading are different, and the stress distribution conditions are also different, which leads to the fact that the interface bonding quality between rubber and steel will directly affect the service performance of the bearing. Moreover, the steel plate is in contact with the external environment and is prone to introduce damage such as corrosion failure and even fracture.

[0005] In order to solve the above technical problems, Patent CN206928181 U discloses a plate rubber bearing with strong durability, which adopts an internal steel plate with densely distributed through holes, and after passing a fiber bundle through the through holes and bonding it with rubber, a laminated rubber body is formed, improving the bonding strength between the internal steel plate and rubber, making it difficult for the internal steel plate and rubber to peel off, and through a composite high-performance carbon fiber cloth layer, it helps to protect the rubber protective layer and prevent cracks from occurring.

[0006] However, the above solution still has the following problems:

[0007] Although the connection between the steel plate and the rubber sheet is strengthened by the fiber bundle, the steel plate and rubber are still arranged in a laminated manner. Due to their different deformation capabilities, the stress distribution conditions between them have not been improved, and it still affects the service performance of the bearing. Content of the Utility Model

[0008] In view of the above problems, the utility model provides a rubber / carbon fiber composite plate bridge bearing capable of effectively transmitting loads, which is integrally made of multiple composite material plates containing rubber, epoxy resin and carbon fiber and a rubber elastomer. The composite material plates are formed by overlapping multiple wedge-shaped structures, improving the stress distribution of the bridge bearing and effectively improving its service performance.

[0009] To achieve the above object, the utility model adopts the following technical solutions:

[0010] A rubber / carbon fiber composite plate - type bridge bearing capable of effectively transmitting load, comprising a bearing main body. The top of the bearing main body is provided with a bearing surface for connecting with the bridge deck, and the bottom is provided with a supporting surface for connecting with the bridge pier; the bearing main body includes a rubber elastomer and multiple composite material plates wrapped by the rubber elastomer, and the multiple composite material plates are integrally vulcanized with the rubber elastomer; the composite material plate is composed of multiple epoxy resin - rubber blocks lapped, and the multiple epoxy resin - rubber blocks are connected into one body by carbon fibers.

[0011] Preferably, multiple rows of carbon fiber holes are opened on the side surface of the epoxy resin - rubber block for passing through multiple carbon fibers; the carbon fibers at the two ends of the composite material plate need to be fixed outside the carbon fiber holes.

[0012] Preferably, the shape of the epoxy resin - rubber block is a wedge - shaped structure.

[0013] Preferably, the material of the rubber elastomer is ordinary rubber or damping rubber.

[0014] Preferably, the epoxy resin - rubber block is made of epoxy resin and rubber; the epoxy resin, carbon fiber, and rubber have a certain gradient combination.

[0015] Preferably, the mass ratio of rubber to epoxy resin in the epoxy resin - rubber block is between 5:100 and 20:100; the volume ratio of carbon fiber to the epoxy resin - rubber block is between 10:50 and 10:65.

[0016] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0017] The bearing main body of the present utility model adopts a composite material plate. Through the carefully designed wedge - shaped structure and the reasonable layout of carbon fibers, the composite material plate has excellent mechanical properties. At the same time, since the deformation ability and stress distribution condition of the composite material plates between layers are the same, it can show better compressive, tensile, and bending resistance under specific loads, enhancing the service performance of the bearing.

[0018] By using the design of lapping with a wedge - shaped structure, the present utility model can enable the composite material plate to achieve modular production, which is convenient to adjust the number of layers and the type of materials according to needs in different applications to meet different performance requirements and improve the convenience of installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0020] Figure 1 is a schematic structural view of a bridge bearing according to an embodiment of the present utility model;

[0021] Figure 2 is a schematic structural view of a composite material plate according to an embodiment of the present utility model;

[0022] Figure 3 is a side view of an epoxy resin-rubber block according to an embodiment of the present utility model;

[0023] In the figure:

[0024] 1, bearing main body; 11, rubber elastic body; 12, composite material plate; 13, epoxy resin-rubber block; 14, carbon fiber; 15, carbon fiber hole; 2, bearing surface; 3, supporting surface. Specific embodiments

[0025] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0026] The following combines the drawings to provide a detailed description of the present utility model. The rubber / carbon fiber composite material plate type bridge bearing disclosed in this embodiment can effectively transmit loads. As Figure 1 shown, it includes a bearing main body 1. The top of the bearing main body 1 is provided with a bearing surface 2 for connecting with the bridge deck, and the bottom is provided with a supporting surface 3 for connecting with the bridge pier; the bearing main body 1 includes a rubber elastic body 11 and multiple layers of composite material plates 12 wrapped by the rubber elastic body 11. The multiple layers of composite material plates 12 are integrally vulcanized with the rubber elastic body 11.

[0027] As Figure 2 shown, the composite material plate 12 is formed by overlapping multiple wedge-shaped epoxy resin-rubber blocks 13. The multiple epoxy resin-rubber blocks 13 are connected into one body through carbon fibers 14. As Figure 3 shown, multiple rows of carbon fiber holes 15 are opened on the side surface of the epoxy resin-rubber block 13 for passing through multiple carbon fibers 14. Multiple carbon fibers 14 need to be fixed outside the carbon fiber holes 15 at both ends of the composite material plate 12, so as to connect the multiple epoxy resin-rubber blocks 13 into one body.

[0028] In this embodiment, the epoxy resin-rubber block 13 is made into a wedge-shaped structure and overlapped to form each layer of the composite material plate 12. Since the composite material plate 12 contains a certain amount of rubber, the bonding interface between these rubbers and the rubber elastic body 11 can improve the bonding strength between layers of the composite material plate 12; and the bonding interface between the composite material plate 12 and the rubber elastic body layer 11 is superior to that of a reinforcing layer made of steel plates or other completely dissimilar materials.

[0029] In addition, since the wedge shape can provide a larger contact area, improving friction and joint strength, this is particularly beneficial for applications that are subject to cyclic movement or vibration; and, different from the traditional case where the force transfer can only occur in a specific direction when a steel plate and a rubber sheet are laminated, in this embodiment, the force can be transferred more effectively through multiple wedge surfaces, thereby improving the load-bearing capacity and stability of the overall structure; the wedge-shaped lap joint can also provide a more uniform stress distribution, reducing fatigue damage caused by stress concentration; this design helps to extend the service life of the bearing and enhance its service performance.

[0030] In this embodiment, the material of the rubber elastomer 11 can be ordinary rubber or damping rubber; it can be understood that damping rubber is made by adding various compounding agents to ordinary rubber. Usually, damping rubber is adopted to improve its performance.

[0031] In this embodiment, the composite material plate 12 wrapped inside the rubber elastomer 11 is formed by overlapping a plurality of wedge-shaped epoxy resin-rubber blocks 13, which enables the bearing body 1 to better disperse and absorb energy when facing an earthquake or other impact forces, thereby protecting the main structure from damage. This is particularly important for buildings in earthquake-prone areas.

[0032] In this embodiment, carbon fiber 14 is used as a reinforcing material, passing through a plurality of epoxy resin-rubber blocks 13 of the entire composite material plate. Due to its high strength and light weight characteristics, carbon fiber 14 can provide additional mechanical strength and rigidity.

[0033] The carbon fiber holes 15 provided on the epoxy resin-rubber blocks 13 can fix the carbon fiber 14 and provide protection for the carbon fiber 14. And being made of epoxy resin and rubber, it can endow the composite material plate 12 with the characteristics of chemical stability and resistance to environmental influence. Moreover, when manufacturing the epoxy resin-rubber blocks 13, the epoxy resin can also form good adhesion during the curing process, enhancing the integrity of the overall structure.

[0034] It should be noted that each epoxy resin-rubber block 13 is made of the same material, but their contents are somewhat different, and the composition ratios of the various materials within each layer of the composite material plate 12 are also somewhat different. In this embodiment, the epoxy resin, carbon fiber, and rubber have a certain gradient combination. Among them, the mass ratio of rubber to epoxy resin within the epoxy resin-rubber block 13 is between 5:100 and 20:100; the volume ratio of carbon fiber 14 to the epoxy resin-rubber block 13 is between 10:50 and 10:65. This ratio range can improve its interlaminar fracture toughness and resistance to low-velocity impact damage without sacrificing the strength, elastic modulus, and glass transition temperature of the carbon fiber composite material.

[0035] Through the carefully designed wedge-shaped structure and the reasonable layout of carbon fiber, the composite material plate 12 has excellent mechanical properties. At the same time, between layers, the composite material plates 12 have consistent deformation capabilities and stress distribution conditions, enabling them to exhibit better compressive, tensile, and bending resistance under specific loads.

[0036] The design of this wedge-shaped lap joint structure also enables the modular production of the composite material plate 12, facilitating the adjustment of the number of layers and the type of material according to needs in different applications to meet different performance requirements and improve the convenience of installation and maintenance.

[0037] By reasonably designing the wedge-shaped cross-section, the use of materials can be reduced without sacrificing performance, thereby reducing costs and improving material efficiency. The wedge-shaped lap joint structure can also be optimized according to the actual load conditions, enabling the support to adapt to different load requirements, including static loads and dynamic loads.

[0038] Although the specific implementation manners of the present utility model have been described above in conjunction with the accompanying drawings, they do not limit the protection scope of the present utility model. Those skilled in the art should understand that based on the technical solution of the present utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present utility model.

Claims

1. A rubber / carbon fiber composite plate type bridge bearing capable of effectively transmitting load, comprising a bearing main body, a bearing surface for connecting with the bridge deck is arranged at the top of the bearing main body, and a supporting surface for connecting with the bridge pier is arranged at the bottom, and it is characterized in that, The support body includes a rubber elastomer and a multi-layer composite material plate wrapped by the rubber elastomer, and the multi-layer composite material plate is integrally vulcanized with the rubber elastomer; the composite material plate is formed by overlapping multiple epoxy resin-rubber blocks, and the multiple epoxy resin-rubber blocks are connected into one body through carbon fibers.

2. The rubber / carbon fiber composite plate bridge bearing capable of effectively transmitting load as described in claim 1, wherein Multiple rows of carbon fiber holes are formed on the side surface of the epoxy resin-rubber block for passing multiple carbon fibers; the two ends of the carbon fiber located in the composite material plate need to be fixed outside the carbon fiber holes.

3. The rubber / carbon fiber composite plate bridge bearing capable of effectively transmitting a load according to claim 1, characterized in that, The shape of the epoxy resin-rubber block is a wedge-shaped structure.

4. The rubber / carbon fiber composite plate bridge bearing capable of effectively transmitting a load according to claim 1, characterized in that, The material of the rubber elastomer is ordinary rubber or damping rubber.

Images