An integrated fireproof and seismic isolation rubber bearing

Abstract

The present invention belongs to the technical field of building seismic isolation and fire prevention, and particularly relates to an integrated fireproof seismic isolation rubber bearing; it includes an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts. The seismic isolation rubber bearing includes an upper connecting plate, a lower connecting plate, and an internal structural part of the seismic isolation rubber bearing arranged between the upper connecting plate and the lower connecting plate. An inner protective rubber layer is arranged on the internal structural part of the seismic isolation rubber bearing, a flexible fireproof and heat-insulating material layer is arranged on the outer wall of the inner protective rubber layer, and an outer protective rubber layer is wrapped on the outer wall of the flexible fireproof and heat-insulating material layer; the present invention cancels the form of the post-wrapped fireproof device and the structural fireproof form, and meets the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use.

Description

Technical Field

[0001] The present invention belongs to the technical field of building seismic isolation and fire prevention, and particularly relates to an integrated fireproof seismic isolation rubber bearing. Background Art

[0002] Building seismic isolation technology refers to setting a seismic isolation layer between an engineering structure and a foundation to isolate the upper structure from the foundation and prevent seismic energy from being transmitted to the engineering structure, thereby reducing earthquake disasters. A building seismic isolation rubber bearing is a seismic isolation device composed of steel plates, rubber, or lead cores, etc., and is currently the most widely used seismic isolation device in seismic isolation layers.

[0003] According to the provisions for civil buildings in the "Code for Fire Protection Design of Buildings GB / T 50016-2014", for column members with a fire resistance rating of first class, the fire resistance limit shall not be less than 3 hours. As an important part of the load-bearing column member, the fire resistance limit of the seismic isolation rubber bearing should also meet the requirement of not less than 3 hours. However, the seismic isolation rubber bearing does not have good fire resistance performance and cannot meet the corresponding regulatory requirements. When the temperature reaches about 420 °C, its protective layer begins to fall off, the bearing is distorted, and it completely loses its function after being exposed to fire for 82 minutes, far lower than the requirement of 3 hours of fire resistance.

[0004] There are mainly two forms of existing seismic isolation and fire prevention structures. One is to regard the entire seismic isolation layer as a fire prevention zone and a protection object, separate it from adjacent floors, and adopt fire prevention structures at the gaps of the separated channels. The other is to wrap a fire protection device outside the seismic isolation rubber bearing after the installation of the seismic isolation rubber bearing and the formation of the upper structure. This is also the most widely used fire protection form at present.

[0005] Disadvantages of the two seismic isolation and fire prevention structures: Fire prevention for the entire seismic isolation layer has a large scope, and some areas of the seismic isolation layer are also functional areas where people often enter and exit. It is impossible to completely separate and protect them from the floors, and the implementation difficulty is large. Wrapping a fire protection device outside the seismic isolation rubber bearing is affected by the construction progress. Moreover, after the installation of most seismic isolation bearings, the space below is small, and it is impossible to implement fireproof outer wrapping. In addition, for those that can implement outer wrapping fire protection, a scheme design needs to be carried out according to the actual pier situation. The construction difficulty is large at pier positions such as corners, with load-bearing walls, and partition walls. The actual construction effect generally has a large difference from the design, and later maintenance and replacement operations are difficult. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, provide an integrated fireproof seismic isolation rubber bearing, cancel the form of post-wrapped fire protection devices and the structural fire protection form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] An integral fireproof and seismic isolation rubber bearing includes an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts. The seismic isolation rubber bearing includes an upper connecting plate, a lower connecting plate, and an internal structural part of the seismic isolation rubber bearing disposed between the upper connecting plate and the lower connecting plate. An inner protective rubber layer is provided on the internal structural part of the seismic isolation rubber bearing, a flexible fireproof and heat-insulating material layer is provided on the outer wall of the inner protective rubber layer, and an outer protective rubber layer is wrapped on the outer wall of the flexible fireproof and heat-insulating material layer.

[0009] Furthermore, except for the surfaces of the upper connecting plate and the lower connecting plate that contact the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer.

[0010] Furthermore, the inner protective rubber layer is a fireproof and flame-retardant rubber or ordinary rubber that can achieve co-vulcanization with the inner rubber.

[0011] Furthermore, the flexible fireproof and heat-insulating material layer is vulcanized into one body with the inner and outer protective rubber layers, and the flexible fireproof and heat-insulating material layer is a fireproof blanket or a fireproof and flame-retardant cloth.

[0012] Furthermore, the flexible fireproof and heat-insulating material layer is vulcanized into one body with the inner and outer protective rubber layers, and the flexible fireproof and heat-insulating material layer is a fireproof blanket and a fireproof and flame-retardant cloth.

[0013] Furthermore, the fireproof blanket is one or more of rock wool blanket, aluminum silicate fiber blanket, glass fiber blanket, aerogel blanket, etc.

[0014] Furthermore, the fireproof and flame-retardant cloth is one or more of ceramic fiber cloth, glass fiber cloth, silicone fireproof cloth, etc.

[0015] Furthermore, the outer protective rubber layer is a fireproof and flame-retardant rubber vulcanized and bonded to the upper connecting plate and the lower connecting plate.

[0016] Furthermore, bolt through holes are provided on the upper and lower connecting plates for the bolts to connect the embedded parts and the upper and lower piers.

[0017] Furthermore, the fireproof coating layer is one of thick-type intumescent fireproof coating or thick-type graphene fireproof coating or other types of fireproof coatings.

[0018] Furthermore, when the flexible fireproof and heat-insulating material layer is a fireproof and flame-retardant cloth, the total thickness is 6 - 18 mm.

[0019] Furthermore, when the flexible fireproof and heat-insulating material layer is a fireproof blanket, the total thickness is 20 - 50 mm.

[0020] Furthermore, the sizes of the upper connecting plate and the lower connecting plate are increased according to the total thickness sizes of the inner and outer protective rubber and the flexible fireproof and heat-insulating material.

[0021] Furthermore, the flexible fireproof and heat-insulating material is vulcanized into one body with the inner and outer protective rubber, and crosslinking occurs at the contact surface between the flexible fireproof and heat-insulating material and the inner and outer protective rubber, bonding them together.

[0022] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0023] The present invention can achieve the integration of fire protection for the seismic isolation rubber bearing, cancel the form of the post-wrapped fire protection device and the structural fire protection form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fireproof and flame-retardant rubber is co-vulcanized with the flexible fireproof and heat-insulating material to achieve multi-layer and multi-channel fire protection; the integrated seismic isolation rubber bearing is simple and convenient to construct, and is easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view of the integrated fireproof seismic isolation rubber bearing of this patent;

[0025] Figure 2 is the top view of Embodiment 2 of the integrated fire protection device of this patent.

[0026] Figure 3 is the top view of Embodiment 3 of the integrated fire protection device of this patent.

[0027] Figure 4 is the schematic diagram of the result of Experiment 1 of the present invention.

[0028] Figure 5 is the schematic diagram of the result of Experiment 2 of the present invention.

[0029] In the figure, 1 - the internal structure part of the seismic isolation rubber bearing; 12 - the upper connecting plate; 13 - the lower connecting plate; 2 - the inner protective rubber layer; 3 - the flexible fireproof and heat-insulating material; 4 - the outer protective rubber layer; 5 - the fireproof coating layer; 6 - the embedded part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Embodiment 1

[0032] An integrated fireproof and seismic isolation rubber bearing, comprising an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts 6. The seismic isolation rubber bearing includes an upper connecting plate 12, a lower connecting plate 13, and an internal structural part 1 of the seismic isolation rubber bearing disposed between the upper connecting plate 12 and the lower connecting plate 13. Except for the surfaces of the upper connecting plate 12 and the lower connecting plate 13 of the seismic isolation rubber bearing that are in contact with the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer 5. An inner protective rubber layer 2 is provided on the internal structural part 1 of the seismic isolation rubber bearing. The inner protective rubber layer 2 is ordinary rubber. A flexible fireproof and heat-insulating material layer 3 is provided on the outer wall of the inner protective rubber layer 2. The flexible fireproof and heat-insulating material layer 3 is sulfurized into one body with the inner and outer protective rubbers, and the flexible fireproof and heat-insulating material layer 3 is a fireproof blanket; the fireproof blanket is a rock wool blanket; the total thickness of the flexible fireproof and heat-insulating material layer 3 is 20 mm; the fireproof coating layer 5 is a thick-type intumescent fireproof coating. The outer wall of the flexible fireproof and heat-insulating material layer 3 is wrapped with an outer protective rubber layer 4; the outer protective rubber layer 4 is a fireproof and flame-retardant rubber vulcanized and bonded to the upper connecting plate 12 and the lower connecting plate 13. Bolt through-holes for bolts to connect the upper and lower piers through the embedded parts 6 are provided on the upper and lower connecting plates. The present invention can achieve the integration of fireproof and seismic isolation of the rubber bearing, cancel the form of the post-wrapped fireproof device and the structural fireproof form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fireproof and flame-retardant glue and the flexible fireproof and heat-insulating material are co-vulcanized to achieve multi-layer and multi-channel fire protection; the integrated seismic isolation rubber bearing is simple and convenient to construct, and is convenient for maintenance and replacement.

[0033] Embodiment 2

[0034] An integrated fireproof and seismic isolation rubber bearing, comprising an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts 6. The seismic isolation rubber bearing includes an upper connecting plate 12, a lower connecting plate 13, and an internal structural part 1 of the seismic isolation rubber bearing disposed between the upper connecting plate 12 and the lower connecting plate 13. Except for the surfaces of the upper connecting plate 12 and the lower connecting plate 13 that are in contact with the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer 5. The upper connecting plate 12 and the lower connecting plate 13 are circular structures. An inner protective rubber layer 2 is provided on the internal structural part 1 of the seismic isolation rubber bearing. The inner protective rubber layer 2 is a fireproof and flame-retardant rubber that can be co-vulcanized with the inner rubber. A flexible fireproof and heat-insulating material layer 3 is provided on the outer wall of the inner protective rubber layer 2. The flexible fireproof and heat-insulating material layer 3 is vulcanized into one body with the inner and outer protective rubbers, and the flexible fireproof and heat-insulating material layer 3 is a fireproof and flame-retardant cloth; the fireproof and flame-retardant cloth is a ceramic fiber cloth, and the total thickness of the flexible fireproof and heat-insulating material layer 3 is 10 mm; the fireproof coating layer 5 is a thick graphene fireproof coating. An outer protective rubber layer 4 is wrapped around the outer wall of the flexible fireproof and heat-insulating material layer 3; the outer protective rubber layer 4 is a fireproof and flame-retardant rubber vulcanized and bonded to the upper connecting plate 12 and the lower connecting plate 13; bolt through-holes for bolts to connect the upper and lower piers through the embedded parts 6 are provided on the upper and lower connecting plates. The present invention can achieve the integration of fireproofing of the seismic isolation rubber bearing, cancel the form of the post-wrapped fireproof device and the structural fireproof form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fireproof and flame-retardant rubber is co-vulcanized with the flexible fireproof and heat-insulating material to achieve multi-layer and multi-channel fireproofing; the integrated seismic isolation rubber bearing is simple and convenient to construct, and is convenient for maintenance and replacement.

[0035] Example 3

[0036] An integrated fireproof and seismic isolation rubber bearing, comprising an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts 6. The seismic isolation rubber bearing includes an upper connecting plate 12, a lower connecting plate 13, and an internal structure part 1 of the seismic isolation rubber bearing disposed between the upper connecting plate 12 and the lower connecting plate 13. Except for the surfaces of the upper connecting plate 12 and the lower connecting plate 13 that contact the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer 5. The upper connecting plate 12 and the lower connecting plate 13 are circular structures. An inner protective rubber layer 2 is provided on the internal structure part 1 of the seismic isolation rubber bearing. The inner protective rubber layer 2 is a fireproof and flame-retardant rubber that can achieve co-vulcanization with the inner rubber. A flexible fireproof and heat-insulating material layer 3 is provided on the outer wall of the inner protective rubber layer 2. The flexible fireproof and heat-insulating material layer 3 is vulcanized into one body with the inner and outer protective rubbers, and the flexible fireproof and heat-insulating material layer 3 is a fireproof blanket and a fireproof and flame-retardant cloth; the fireproof blanket is a silicon-aluminum fiber blanket; the fireproof and flame-retardant cloth is a ceramic fiber cloth, and the total thickness of the flexible fireproof and heat-insulating material layer 3 is 50 mm; the fireproof coating layer 5 is a thick-type intumescent fireproof coating. An outer protective rubber layer 4 is wrapped around the outer wall of the flexible fireproof and heat-insulating material layer 3; the outer protective rubber layer 4 is a fireproof and flame-retardant rubber vulcanized and bonded to the upper connecting plate 12 and the lower connecting plate 13; bolt through-holes for bolts to connect the embedded parts 6 and the upper and lower piers are provided on the upper and lower connecting plates. The present invention can achieve the integration of fireproofing of the seismic isolation rubber bearing, cancel the form of the post-wrapped fireproof device and the structural fireproof form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fireproof and flame-retardant rubber is co-vulcanized with the flexible fireproof and heat-insulating material to achieve multi-layer and multi-channel fireproofing; the integrated seismic isolation rubber bearing is simple and convenient to construct, and is convenient for maintenance and replacement.

[0037] Example 4

[0038] An integral fire-proof and seismic isolation rubber bearing includes an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts 6. The seismic isolation rubber bearing includes an upper connecting plate 12, a lower connecting plate 13, and an internal structural part 1 of the seismic isolation rubber bearing disposed between the upper connecting plate 12 and the lower connecting plate 13. Except for the surfaces of the upper connecting plate 12 and the lower connecting plate 13 in contact with the upper pier and the lower pier, the remaining exposed parts are sprayed with a fire-proof coating layer 5. An inner protective rubber layer 2 is provided on the internal structural part 1 of the seismic isolation rubber bearing. The inner protective rubber layer 2 is a fire-proof and flame-retardant rubber that can achieve co-vulcanization with the inner rubber. A flexible fire-proof and heat-insulating material layer 3 is provided on the outer wall of the inner protective rubber layer 2. The flexible fire-proof and heat-insulating material layer 3 is vulcanized into one body with the inner and outer protective rubbers, and the flexible fire-proof and heat-insulating material layer 3 is a fire-proof and flame-retardant cloth; the fire-proof and flame-retardant cloth is a ceramic fiber cloth and a glass fiber cloth, and the total thickness of the flexible fire-proof and heat-insulating material layer 3 is 15 mm; the fire-proof coating layer 5 is a thick-type intumescent fire-proof coating. An outer protective rubber layer 4 is wrapped around the outer wall of the flexible fire-proof and heat-insulating material layer 3; the outer protective rubber layer 4 is a fire-proof and flame-retardant rubber vulcanized and bonded to the upper connecting plate 12 and the lower connecting plate 13; bolt through-holes for bolts to connect the upper and lower piers through the embedded parts 6 are provided on the upper and lower connecting plates. The present invention can achieve the integration of fire-proof for the seismic isolation rubber bearing, cancel the form of post-wrapped fire-proof devices and the structural fire-proof form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fire-proof and flame-retardant rubber and the flexible fire-proof and heat-insulating material are co-vulcanized to achieve multi-layer and multi-channel fire protection; the integral seismic isolation rubber bearing is simple and convenient to construct, and is convenient for maintenance and replacement.

[0039] Example 5

[0040] An integrated fireproof and seismic isolation rubber bearing, comprising an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts 6. The seismic isolation rubber bearing includes an upper connecting plate 12, a lower connecting plate 13, and an internal structural part 1 of the seismic isolation rubber bearing disposed between the upper connecting plate 12 and the lower connecting plate 13. Except for the surfaces of the upper connecting plate 12 and the lower connecting plate 13 that are in contact with the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer 5. An inner protective rubber layer 2 is provided on the internal structural part 1 of the seismic isolation rubber bearing. The inner protective rubber layer 2 is a fireproof and flame-retardant rubber that can achieve co-vulcanization with the inner rubber. A flexible fireproof and heat-insulating material layer 3 is provided on the outer wall of the inner protective rubber layer 2. The flexible fireproof and heat-insulating material layer 3 is vulcanized into one body with the inner and outer protective rubbers, and the flexible fireproof and heat-insulating material layer 3 is a fireproof blanket; the fireproof blanket is an aluminum silicate fiber blanket, a glass fiber blanket, or an aerogel blanket, and the total thickness of the flexible fireproof and heat-insulating material layer 3 is 30 mm; the fireproof coating layer 5 is a thick-type intumescent fireproof coating, and an outer protective rubber layer 4 is wrapped around the outer wall of the flexible fireproof and heat-insulating material layer 3; the outer protective rubber layer 4 is a fireproof and flame-retardant rubber vulcanized and bonded to the upper connecting plate 12 and the lower connecting plate 13; bolt through-holes for bolts to connect the upper and lower piers through the embedded parts 6 are provided on the upper and lower connecting plates. The present invention can achieve the integration of fireproofing of the seismic isolation rubber bearing, cancel the form of the post-wrapped fireproof device and the structural fireproof form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fireproof and flame-retardant rubber and the flexible fireproof and heat-insulating material are co-vulcanized to achieve multi-layer and multi-channel fireproofing; the integrated seismic isolation rubber bearing is simple and convenient to construct, and is convenient for maintenance and replacement.

[0041] Example 6

[0042] An integrated fireproof and seismic isolation rubber bearing, comprising an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts 6. The seismic isolation rubber bearing includes an upper connecting plate 12, a lower connecting plate 13, and an internal structural part 1 of the seismic isolation rubber bearing arranged between the upper connecting plate 12 and the lower connecting plate 13. Except for the surfaces of the upper connecting plate 12 and the lower connecting plate 13 in contact with the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer 5. An inner protective rubber layer 2 is arranged on the internal structural part 1 of the seismic isolation rubber bearing. The inner protective rubber layer 2 is a fireproof and flame-retardant rubber that can realize co-vulcanization with the inner rubber. A flexible fireproof and heat-insulating material layer 3 is arranged on the outer wall of the inner protective rubber layer 2. The flexible fireproof and heat-insulating material layer 3 is vulcanized into one body with the inner and outer protective rubbers, and the flexible fireproof and heat-insulating material layer 3 is a fireproof and flame-retardant cloth; the fireproof and flame-retardant cloth is a glass fiber cloth, and the total thickness of the flexible fireproof and heat-insulating material layer 3 is 7.2 mm; the fireproof coating layer 5 is a thick graphene fireproof coating. An outer protective rubber layer 4 is wrapped on the outer wall of the flexible fireproof and heat-insulating material layer 3; the outer protective rubber layer 4 is a fireproof and flame-retardant rubber vulcanized and bonded to the upper connecting plate 12 and the lower connecting plate 13; bolt through-holes for bolts to connect the upper and lower piers through the embedded parts 6 are arranged on the upper and lower connecting plates. The present invention can realize the integration of fireproof of the seismic isolation rubber bearing, cancel the form of the post-wrapped fireproof device and the structural fireproof form, and meet the shear use requirements of the seismic isolation bearing, so that the seismic isolation bearing is always under fire protection during use; the experimental fireproof and flame-retardant rubber and the flexible fireproof and heat-insulating material are co-vulcanized to realize multi-layer and multi-channel fireproof; the integrated seismic isolation rubber bearing is simple and convenient to construct, and is convenient for maintenance and replacement.

[0043] Experimental analysis:

[0044] In order to test the fireproof effect of the present invention,

[0045] Experimental group 1 (Example 2): Sulfurized samples with a fire-exposed surface of flame-retardant rubber (about 10 mm), a middle layer of ceramic fiber cloth (5 layers, 2 mm for each layer, and the temperature measurement point 1 is between the 2nd and 3rd layers), and a non-fire-exposed surface of strip rubber (6 - 8 mm) are used for fireproof performance testing to check the co-vulcanization of the rubber and the fireproof cloth, test the combustion situation (fireproof situation) of the fireproof rubber, and the heat insulation situation on the back fire side. The experimental results are as Figure 4 shown.

[0046] Experimental group 2 (Example 6): Sulfurized samples with a fire-exposed surface of flame-retardant rubber (about 10 mm), a middle layer of glass fiber cloth (24 layers, 0.3 mm for each layer, and the temperature measurement point 1 is between the 9th and 10th layers), and a non-fire-exposed surface of strip rubber (6 - 8 mm) are used for fireproof performance testing to check the co-vulcanization of the rubber and the fireproof cloth, test the combustion situation (fireproof situation) of the fireproof rubber, and the heat insulation situation on the back fire side. The experimental results Figure 5 shown.

[0047] FromFigure 4 and Figure 5 It can be seen that the fireproof and seismic isolation rubber of the present invention has a good fireproof effect.

[0048] Although the present invention has been described herein with reference to various illustrative embodiments of the invention, it should be understood that those skilled in the art can devise many other modifications and embodiments that will fall within the scope and spirit of the principles disclosed in this application. More specifically, within the scope of the present application disclosure, the drawings and the claims, various variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An integral fireproof and seismic isolation rubber bearing, comprising an upper pier, a lower pier, and a seismic isolation rubber bearing connected to the upper pier and the lower pier through embedded parts (6), characterized in that: The seismic isolation rubber bearing includes an upper connecting plate (12), a lower connecting plate (13), and an internal structural part (1) of the seismic isolation rubber bearing disposed between the upper connecting plate (12) and the lower connecting plate (13). An inner protective rubber layer (2) is provided on the internal structural part (1) of the seismic isolation rubber bearing. A flexible fireproof and heat-insulating material layer (3) is provided on the outer wall of the inner protective rubber layer (2). An outer protective rubber layer (4) is wrapped and disposed on the outer wall of the flexible fireproof and heat-insulating material layer (3); Except for the surfaces of the upper connecting plate (12) and the lower connecting plate (13) that come into contact with the upper pier and the lower pier, the remaining exposed parts are sprayed with a fireproof coating layer (5); The inner protective rubber layer (2) is a fireproof and flame-retardant rubber that can achieve co-vulcanization with the inner rubber; The flexible fireproof and heat-insulating material layer (3) is vulcanized into one body with the inner and outer protective rubbers, and the flexible fireproof and heat-insulating material layer (3) is a fireproof blanket and / or a fireproof and flame-retardant cloth; The fireproof blanket is one or more of a rock wool blanket, an aluminum silicate fiber blanket, a glass fiber blanket, and an aerogel blanket; The fireproof and flame-retardant cloth is one or more of a glass fiber cloth and a silicone fireproof cloth; The outer protective rubber layer (4) is a fireproof and flame-retardant rubber that is vulcanized and bonded to the upper connecting plate (12) and the lower connecting plate (13); Bolt through holes for bolts to connect with the upper and lower piers through the embedded parts (6) are provided on the upper and lower connecting plates.

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