A high fatigue three-dimensional vibration dual control device

Abstract

The invention relates to a high fatigue three-dimensional vibration dual-control device suitable for vibration prevention and seismic isolation of subway superstructures; the device comprises a laminated rubber bearing and a vertical vibration isolation device which are serially combined; the laminated rubber bearing is formed by alternately laminating a layer of steel plate and a layer of rubber and then molding; the vertical vibration isolation device is formed by laminating a single layer of rubber or multiple layers of rubber and a steel plate, or by integrally vulcanizing a rubber damping element, a steel rod and a steel cylinder; the vertical vibration isolation and the horizontal vibration isolation of the three-dimensional seismic isolation (vibration) device are mutually decoupled, and the rubber material is high fatigue rubber, which better meets the use conditions of subway superstructures, and at the same time, the device has excellent quality, good vibration isolation effect and low cost.

Description

Technical Field

[0001] The invention relates to the field of seismic (vibration) isolation technology, and in particular to a high-fatigue three-dimensional seismic-vibration dual-control device suitable for vibration prevention and seismic isolation of subway superstructures. Background Art

[0002] Building seismic isolation technology has developed rapidly since its inception. Its seismic isolation effect has been verified by many earthquakes and has been recognized by experts and scholars in the field of building seismic resistance at home and abroad. In China, building seismic isolation technology has developed rapidly. Currently, there are demonstration projects such as Kunming Changshui Airport and Beijing Daxing Airport. However, the main consideration in the design of building seismic isolation technology is to isolate horizontal earthquakes, and the seismic isolation bearings have basically no vertical vibration isolation effect.

[0003] The advancement of urbanization has led to a sharp increase in urban traffic pressure, and the development of urban rail transit has become inevitable. At the same time, the increasing shortage of urban land has made the use of land along the rail lines inevitable. With the improvement of people's requirements for building comfort and the accuracy requirements of some precision instruments, the demand for vertical vibration isolation of buildings along subways and high-speed railways has become increasingly prominent.

[0004] The national standard has clear requirements for the indoor vibration limits of different types of buildings along the rail transit line. The vibration isolation effect brought by the current track vibration isolation technology and building isolation bearings cannot meet the requirements of the national standard.

[0005] The devices of the currently disclosed related patents mostly use springs for vertical vibration isolation, which is more expensive than rubber and is not conducive to promotion and application.

[0006] The vibration frequency caused by the subway is mainly concentrated in the range of 10 to 80 Hz. In this case, the fatigue performance requirements for the vibration isolation device are relatively high. The working environment of the building isolation rubber bearing is basically in a static state, so the fatigue performance requirements are relatively low. With the development of society, some vibration environments have also adopted building isolation rubber bearings. For example, roads, railways, and subways are all in a long-term vibration environment. Changes in the use environment have also changed the performance requirements of building isolation rubber bearings. Vibration can cause fatigue damage to rubber, and fatigue damage affects the safe use of rubber products. The development of high-fatigue rubber can increase the service life of isolation rubber bearings in vibration environments, while improving the safety of using isolation rubber bearings in vibration environments.

[0007] Bridge rubber bearings are in vertical compression and vibration conditions for a long time, so the fatigue performance requirements are relatively high. However, there are relatively few rubbers with good fatigue resistance used in bridge bearings, and the replacement cost of bridge seismic isolation rubber bearings is high after damage. The use of fatigue-resistant rubber can greatly extend the service life of bridge seismic isolation rubber bearings and their safety. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a high-fatigue three-dimensional seismic and vibration dual-control device. The vertical isolation and horizontal isolation of the three-dimensional seismic isolation (vibration) device are decoupled from each other, and the rubber material is high-fatigue rubber, which can better meet the use conditions of subway superstructures. At the same time, the device has excellent quality, good seismic isolation (vibration) effect and low cost.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A high fatigue three-dimensional vibration dual-control device comprises a laminated rubber support and a vertical vibration isolation device which are combined in series.

[0011] Furthermore, the laminated rubber bearing is formed by alternately laminating a layer of steel plate and a layer of rubber and then molding them.

[0012] Furthermore, the vertical vibration isolation device is formed by laminating a single layer of rubber or multiple layers of rubber and a steel plate.

[0013] Furthermore, the vertical vibration isolation device is formed by vulcanizing the rubber damping element, the steel rod and the steel cylinder in one piece.

[0014] Furthermore, the outer periphery of the laminated rubber bearing is wrapped with protective rubber.

[0015] Furthermore, the upper and lower ends of the laminated rubber bearing are provided with connecting plates, and the connecting plates are provided with first reserved holes for connecting with the vertical vibration isolation device or the building pier.

[0016] Furthermore, an upper connecting plate and a lower connecting plate are provided at both ends of the vertical vibration isolation device, and a limiting guide device is provided between the upper and lower connecting plates.

[0017] Furthermore, the vertical vibration isolation device is connected to the laminated rubber bearing or the building pier through the second reserved hole on the connecting plate.

[0018] Furthermore, the vertical natural frequency of the support body is 1 to 10 Hz.

[0019] Furthermore, the rubber and the rubber damping element are both high fatigue rubbers, and the weight proportions of the components in the formula are as follows: 70-40 parts of natural rubber, 30-100 parts of butadiene rubber, 30-10 parts of trans-polyisoprene, 3-10 parts of zinc oxide, 2-5 parts of stearic acid, 1-3 parts of antioxidant RD, 1-3 parts of antioxidant 4010NA, 1-3 parts of antioxidant BLE-W, 1-3 parts of fatigue agent PL-600, 15-60 parts of carbon black N375, 5-15 parts of plasticizer, 1-3 parts of sulfur, 1-4 parts of accelerator, 1-5 parts of anti-reversion agent PK900, 0-3 parts of WAX, and 3-25 parts of resin.

[0020] Furthermore, the plasticizer is 5 to 15 parts of DOS; the accelerators are 1 to 2 parts of accelerator DZ, 0 to 1 part of accelerator DM, and 0 to 1 part of TMTD.

[0021] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0022] The present invention is composed of a laminated rubber bearing and a vertical vibration isolation device. The laminated rubber bearing can isolate horizontal earthquakes, and the vertical vibration isolation device can isolate subway vibrations. The vertical vibration isolation device can be decoupled from the horizontal isolation bearing through a limit guide device. The vertical vibration frequency of the device body is between 1 and 10 Hz, avoiding the main frequency of subway vibration between 10 and 80 Hz, and achieving a vertical vibration isolation effect. The rubber used is fatigue-resistant rubber, which ensures that the device has stable performance under long-term high-frequency use conditions.

[0023] The invention has low cost, and vertical vibration isolation and horizontal vibration isolation are decoupled from each other, with clear division of labor, excellent quality, and good vibration isolation effect. The rubber material used is a special fatigue-resistant rubber with strong functionality.

[0024] Bridge seismic isolation rubber bearings are in a vibrating environment for a long time, so the fatigue performance requirements are also higher. The development of high fatigue rubber bearings can improve the stability of the mechanical properties of seismic isolation rubber bearings and provide better protection for buildings such as roads and bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of Example 2 of the present invention under compression and shearing state.

[0029] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present invention;

[0030] Figure 6 It is a top view of Embodiment 4 of the present invention;

[0031] Figure 7 This is a structural diagram of Embodiment 5 of the present invention;

[0032] Figure 8 This is a structural diagram of Embodiment 6 of the present invention;

[0033] Fig. 9 This is a schematic diagram of Example 5 of the present invention under a compression and shearing state.

[0034] In the figure, 1-laminated rubber bearing, 2-vertical vibration isolation device, 3-limiting guide device, 4-upper connecting plate, 5-lower connecting plate, 6-second reserved hole, 7-rubber, 8-steel plate, 10-protective rubber, 11-connecting plate, 12-first reserved hole, 13-steel cylinder, 14-steel rod. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0036] Example 1

[0037] See also Figure 1 The high fatigue three-dimensional vibration dual control device of the present invention is composed of a laminated rubber bearing 1 and a vertical vibration isolation device 2 connected in series. In this embodiment, a laminated rubber bearing 1 and a vertical vibration isolation device 2 are provided, wherein the laminated rubber bearing 1 is formed by alternately stacking a layer of steel plate 8 and a layer of rubber 7 and then molded, and the outer periphery of the bearing is coated with a protective rubber 10 to play an anti-aging role. The upper and lower ends of the laminated rubber bearing are provided with connecting plates 11, and the connecting plate 11 is provided with a first reserved hole 12 to connect with the vertical vibration isolation device and the building pier. An upper connecting plate 4 and a lower connecting plate 5 are provided at both ends of the vertical vibration isolation device, and a limiting guide device 3 and a rubber pad are provided between the upper and lower connecting plates. The limiting guide device can be a structure with limiting and guiding functions in various forms. The rubber pad adopts a single-layer rubber. The vertical vibration isolation device is connected to the laminated rubber support 1 or the building pier through the second reserved hole 6 on the connecting plate. The rubber material adopts a specially developed fatigue-resistant rubber. The weight parts of each component in the formula are as follows: 50 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of trans-polyisoprene TBIR, 6 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant RD, 2 parts of antioxidant 4010NA, 1 part of antioxidant BLE-W, 1 part of fatigue agent PL-600, 20 parts of carbon black N375, 9 parts of plasticizer, 1 part of sulfur, 1.8 parts of accelerator, 1 part of anti-vulcanization reversion agent PK900, 6 parts of resin, the plasticizer is DOS, and the accelerator is accelerator DZ 1.5 parts, accelerator DM 0.5 parts.

[0038] Preparation of plasticized rubber: Put the weighed natural rubber into an internal mixer for plasticization, stir for 5 minutes to discharge the rubber, cool and place for more than 4 hours for use. According to the above ratio, weigh the plasticized natural rubber and cis-1,2-butadiene rubber, put them into an internal mixer for plasticization, stir for 3 minutes to discharge the rubber, and cool for more than 4 hours for use.

[0039] Preparation of rubber mix: put the weighed mixed rubber, activator, antioxidant, carbon black and plasticizer into an internal mixer, stir for 5 minutes to discharge the rubber, cool on a roll on an open mixer, add sulfur and accelerator when the temperature cools to below 80°C, turn over for 5 minutes, cool on the sheet for more than 4 hours for use.

[0040] Sheeting: put the mixed rubber into the open mixing mill for 8 minutes of hot refining, calender the hot-refined rubber, sheet out, and cool for standby use.

[0041] Vulcanization: Cross-stack the prepared rubber sheet and the processed steel plate together, and put the pre-installed bearing into the mold. After pressurized hot vulcanization, remove the mold and the seismic isolation rubber bearing is ready.

[0042] Example 2

[0043] See also Figure 2 A high fatigue three-dimensional vibration dual-control device of the present invention is composed of a laminated rubber bearing 1 and a vertical vibration isolation device 2 connected in series. In this embodiment, a laminated rubber bearing 1 and two vertical vibration isolation devices 2 are provided, wherein the laminated rubber bearing 1 is formed by alternately stacking a layer of steel plate 8 and a layer of rubber 7 and then molded, and the outer periphery of the bearing is coated with a protective rubber 10 to prevent aging. The upper and lower ends of the laminated rubber bearing are provided with connecting plates 11, and the connecting plate 11 is provided with a first reserved hole 12 to connect with the vertical vibration isolation device. An upper connecting plate 4 and a lower connecting plate 5 are provided at both ends of the vertical vibration isolation device, and a limiting guide device 3 and a rubber pad are provided between the upper and lower connecting plates. The limiting guide device can be a structure with limiting and guiding functions in various forms, and the rubber pad is formed by stacking multiple layers of rubber and steel plates. The vertical vibration isolation device is connected to the laminated rubber bearing 1 or the building pier through the second reserved hole 6 on the connecting plate,

[0044] See also Figure 4 When an earthquake causes horizontal displacement, the laminated rubber bearing 1 undergoes horizontal shearing to perform horizontal seismic isolation. The vertical vibration isolation device 2 does not undergo horizontal deformation due to the limitation of the limit guide device 3, which does not affect the seismic isolation effect of the laminated rubber bearing. After the earthquake, the laminated rubber bearing is reset, and the high fatigue three-dimensional seismic isolation (vibration) device continues to work.

[0045] The rubber material adopts specially developed fatigue-resistant rubber. The weight proportions of the components in the formula are as follows: 50 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of trans-polyisoprene TBIR, 7 parts of zinc oxide, 3 parts of stearic acid, 1 part of antioxidant RD, 2 parts of antioxidant 4010NA, 1 part of antioxidant BLE-W, 1 part of fatigue agent PL-600, 60 parts of carbon black N375, 10 parts of plasticizer, 2 parts of sulfur, 2.5 parts of accelerator, 1 part of anti-reversion agent PK900, 2 parts of WAX, and 15 parts of resin; the plasticizer is DOS, the accelerator is 1.5 parts of accelerator DZ, and 0.5 parts of accelerator TMTD.

[0046] Preparation of plasticized rubber: Put the weighed natural rubber into an internal mixer for plasticization, stir for 6 minutes to discharge the rubber, cool and place for more than 4 hours for use. According to the above ratio, weigh the plasticized natural rubber and cis-1,2-butadiene rubber, put them into an internal mixer for plasticization, stir for 3 minutes to discharge the rubber, and cool for more than 4 hours for use.

[0047] Preparation of rubber mix: put the weighed mixed rubber, activator, antioxidant, carbon black and plasticizer into an internal mixer, stir for 5 minutes to discharge the rubber, cool on a roll on an open mixer, add sulfur and accelerator when the temperature cools to below 80°C, turn over for 5 minutes, cool on the sheet for more than 4 hours for use.

[0048] Sheeting: Put the mixed rubber into the open mixing mill for 10 minutes of refining, calender the hot-refined rubber, sheet out, and cool it for standby use.

[0049] Vulcanization: Cross-stack the prepared rubber sheet and the processed steel plate together, and put the pre-installed bearing into the mold. After pressurized hot vulcanization, remove the mold and the seismic isolation rubber bearing is ready.

[0050] Example 3

[0051] See also Figure 3 A high fatigue three-dimensional vibration dual-control device of the present invention is composed of a laminated rubber bearing 1 and a vertical vibration isolation device 2 connected in series. In this embodiment, two laminated rubber bearings 1 and a vertical vibration isolation device 2 are provided, wherein the laminated rubber bearing 1 is formed by alternately stacking a layer of steel plate 8 and a layer of rubber 7 and then molded, and the outer periphery of the bearing is coated with a protective rubber 10 to prevent aging. The upper and lower ends of the laminated rubber bearing are provided with connecting plates 11, and the connecting plate 11 is provided with a first reserved hole 12 to connect with the vertical vibration isolation device and the building pier. An upper connecting plate 4 and a lower connecting plate 5 are provided at both ends of the vertical vibration isolation device, and a limiting guide device 3 and a rubber pad are provided between the upper and lower connecting plates. The limiting guide device can be a structure with limiting and guiding functions in various forms, and the rubber pad is formed by stacking multiple layers of rubber and steel plates. The vertical vibration isolation device is connected to the laminated rubber bearing 1 through the second reserved hole 6 on the connecting plate.

[0052] The rubber material adopts specially developed fatigue-resistant rubber. The weight proportions of the components in the formula are as follows: 50 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of trans-polyisoprene TBIR, 7 parts of zinc oxide, 3 parts of stearic acid, 1 part of antioxidant RD, 2 parts of antioxidant 4010NA, 1 part of antioxidant BLE-W, 1 part of fatigue agent PL-600, 60 parts of carbon black N375, 10 parts of plasticizer, 2 parts of sulfur, 2.5 parts of accelerator, 1 part of anti-reversion agent PK900, 2 parts of WAX, and 15 parts of resin; the plasticizer is DOS, the accelerator is 1.5 parts of accelerator DZ, and 0.5 parts of accelerator TMTD.

[0053] Preparation of plasticized rubber: Put the weighed natural rubber into an internal mixer for plasticization, stir for 6 minutes to discharge the rubber, cool and place for more than 4 hours for use. According to the above ratio, weigh the plasticized natural rubber and cis-1,2-butadiene rubber, put them into an internal mixer for plasticization, stir for 3 minutes to discharge the rubber, and cool for more than 4 hours for use.

[0054] Preparation of rubber mix: put the weighed mixed rubber, activator, antioxidant, carbon black and plasticizer into an internal mixer, stir for 5 minutes to discharge the rubber, cool on a roll on an open mixer, add sulfur and accelerator when the temperature cools to below 80°C, turn over for 5 minutes, cool on the sheet for more than 4 hours for use.

[0055] Sheeting: Put the mixed rubber into the open mixing mill for 10 minutes of refining, calender the hot-refined rubber, sheet out, and cool it for standby use.

[0056] Vulcanization: Cross-stack the prepared rubber sheet and the processed steel plate together, and put the pre-installed bearing into the mold. After pressurized hot vulcanization, remove the mold and the seismic isolation rubber bearing is ready.

[0057] Example 4

[0058] See also Figure 5 , Figure 6The high fatigue three-dimensional vibration dual control device of the present invention is composed of a laminated rubber bearing 1 and a vertical vibration isolation device 2 connected in series. In this embodiment, a laminated rubber bearing 1 and a vertical vibration isolation device 2 are provided, wherein the laminated rubber bearing 1 is formed by alternately stacking a layer of steel plate 8 and a layer of rubber 7 and then molded, and the outer periphery of the bearing is coated with a protective rubber 10 to play an anti-aging role. The upper and lower ends of the laminated rubber bearing are provided with connecting plates 11, and the connecting plate 11 is provided with a first reserved hole 12 to connect with the vertical vibration isolation device and the building pier. An upper connecting plate 4 and a lower connecting plate 5 are provided at both ends of the vertical vibration isolation device, and a limit guide device 3 and a rubber pad are provided between the upper and lower connecting plates. The limit guide device can be a structure with limit and guide functions in various forms. The vertical vibration isolation device 2 is formed by vulcanizing a rubber damping element, a steel rod 14, and a steel cylinder 13 as a whole. The vertical vibration isolation device is connected to a laminated rubber bearing 1 or a building pier through a second reserved hole 6 on the connecting plate. The rubber material adopts a specially developed fatigue-resistant rubber. The weight parts of each component in the formula are as follows: 50 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of trans-polyisoprene TBIR, 6 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant RD, 2 parts of antioxidant 4010NA, 1 part of antioxidant BLE-W, 1 part of fatigue agent PL-600, 20 parts of carbon black N375, 9 parts of plasticizer, 1 part of sulfur, 1.8 parts of accelerator, and anti-vulcanization reversion agent PK900. 1 part, resin 6 parts, the plasticizer is DOS part, the accelerator is 1.5 parts of accelerator DZ, and 0.5 parts of accelerator DM.

[0059] Preparation of plasticized rubber: Put the weighed natural rubber into an internal mixer for plasticization, stir for 5 minutes to discharge the rubber, cool and place for more than 4 hours for use. According to the above ratio, weigh the plasticized natural rubber and cis-1,2-butadiene rubber, put them into an internal mixer for plasticization, stir for 3 minutes to discharge the rubber, and cool for more than 4 hours for use.

[0060] Preparation of rubber mix: put the weighed mixed rubber, activator, antioxidant, carbon black and plasticizer into an internal mixer, stir for 5 minutes to discharge the rubber, cool on a roll on an open mixer, add sulfur and accelerator when the temperature cools to below 80°C, turn over for 5 minutes, cool on the sheet for more than 4 hours for use.

[0061] Sheeting: put the mixed rubber into the open mixing mill for 8 minutes of hot refining, calender the hot-refined rubber, sheet out, and cool for standby use.

[0062] Vulcanization: Cross-stack the prepared rubber sheet and the processed steel plate together, and put the pre-installed bearing into the mold. After pressurized hot vulcanization, remove the mold and the seismic isolation rubber bearing is ready.

[0063] Example 5

[0064] See also Figure 7A high fatigue three-dimensional vibration dual-control device of the present invention is composed of a laminated rubber bearing 1 and a vertical vibration isolation device 2 connected in series. In this embodiment, a laminated rubber bearing 1 and two vertical vibration isolation devices 2 are provided, wherein the laminated rubber bearing 1 is formed by alternately stacking a layer of steel plate 8 and a layer of rubber 7 and then molded, and the outer periphery of the bearing is coated with a protective rubber 10 to prevent aging. The upper and lower ends of the laminated rubber bearing are provided with connecting plates 11, and the connecting plate 11 is provided with a first reserved hole 12 to connect with the vertical vibration isolation device and the building pier. An upper connecting plate 4 and a lower connecting plate 5 are provided at both ends of the vertical vibration isolation device, and a limiting guide device 3 and a rubber pad are provided between the upper and lower connecting plates. The limiting guide device can be a variety of structures with limiting and guiding functions. The vertical vibration isolation device 2 is formed by vulcanizing a rubber damping element with a steel rod 14 and a steel cylinder 13 as a whole. The vertical vibration isolation device is connected to the laminated rubber bearing 1 or the building pier through the second reserved hole 6 on the connecting plate.

[0065] like Fig. 9 As shown, when an earthquake causes horizontal displacement, the laminated rubber bearing 1 undergoes horizontal shearing to perform horizontal seismic isolation, and the vertical vibration isolation device 2 does not undergo horizontal deformation due to the limitation of the limit guide device 2, which does not affect the seismic isolation effect of the laminated rubber bearing. After the earthquake, the laminated rubber bearing is reset, and the high fatigue three-dimensional seismic isolation (vibration) device continues to work.

[0066] The rubber material adopts specially developed fatigue-resistant rubber. The weight proportions of the components in the formula are as follows: 50 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of trans-polyisoprene TBIR, 6 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant RD, 2 parts of antioxidant 4010NA, 1 part of antioxidant BLE-W, 1 part of fatigue agent PL-600, 20 parts of carbon black N375, 9 parts of plasticizer, 1 part of sulfur, 1.8 parts of accelerator, 1 part of anti-vulcanization reversion agent PK900, 6 parts of resin, the plasticizer is DOS, the accelerator is 1.5 parts of accelerator DZ, and 0.5 parts of accelerator DM.

[0067] Preparation of plasticized rubber: Put the weighed natural rubber into an internal mixer for plasticization, stir for 5 minutes to discharge the rubber, cool and place for more than 4 hours for use. According to the above ratio, weigh the plasticized natural rubber and cis-1,2-butadiene rubber, put them into an internal mixer for plasticization, stir for 3 minutes to discharge the rubber, and cool for more than 4 hours for use.

[0068] Preparation of rubber mix: put the weighed mixed rubber, activator, antioxidant, carbon black and plasticizer into an internal mixer, stir for 5 minutes to discharge the rubber, cool on a roll on an open mixer, add sulfur and accelerator when the temperature cools to below 80°C, turn over for 5 minutes, cool on the sheet for more than 4 hours for use.

[0069] Sheeting: put the mixed rubber into the open mixing mill for 8 minutes of hot refining, calender the hot-refined rubber, sheet out, and cool for standby use.

[0070] Vulcanization: Cross-stack the prepared rubber sheet and the processed steel plate together, and put the pre-installed bearing into the mold. After pressurized hot vulcanization, remove the mold and the seismic isolation rubber bearing is ready.

[0071] Example 6

[0072] See also Figure 8 The high fatigue three-dimensional vibration dual control device of the present invention is composed of a laminated rubber bearing 1 and a vertical vibration isolation device 2 connected in series. In this embodiment, two laminated rubber bearings 1 and a vertical vibration isolation device 2 are provided, wherein the laminated rubber bearing 1 is formed by alternately stacking a layer of steel plate 8 and a layer of rubber 7 and then molded, and the outer periphery of the bearing is coated with a protective rubber 10 to prevent aging. The upper and lower ends of the laminated rubber bearing are provided with connecting plates 11, and the connecting plate 11 is provided with a first reserved hole 12 to connect with the vertical vibration isolation device and the building pier. An upper connecting plate 4 and a lower connecting plate 5 are provided at both ends of the vertical vibration isolation device, and a limit guide device 3 and a rubber pad are provided between the upper and lower connecting plates. The limit guide device can be a structure with limit and guide functions in various forms. The vertical vibration isolation device 2 is formed by vulcanizing a rubber damping element, a steel rod 14, and a steel cylinder 13 as a whole. The vertical vibration isolation device is connected to a laminated rubber bearing 1 or a building pier through a second reserved hole 6 on the connecting plate. The rubber material adopts a specially developed fatigue-resistant rubber. The weight parts of each component in the formula are as follows: 50 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of trans-polyisoprene TBIR, 6 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant RD, 2 parts of antioxidant 4010NA, 1 part of antioxidant BLE-W, 1 part of fatigue agent PL-600, 20 parts of carbon black N375, 9 parts of plasticizer, 1 part of sulfur, 1.8 parts of accelerator, and anti-vulcanization reversion agent PK900. 1 part, resin 6 parts, the plasticizer is DOS part, the accelerator is 1.5 parts of accelerator DZ and 0.5 parts of accelerator DM.

[0073] Preparation of plasticized rubber: Put the weighed natural rubber into an internal mixer for plasticization, stir for 5 minutes to discharge the rubber, cool and place for more than 4 hours for use. According to the above ratio, weigh the plasticized natural rubber and cis-1,2-butadiene rubber, put them into an internal mixer for plasticization, stir for 3 minutes to discharge the rubber, and cool for more than 4 hours for use.

[0074] Preparation of rubber mix: put the weighed mixed rubber, activator, antioxidant, carbon black and plasticizer into an internal mixer, stir for 5 minutes to discharge the rubber, cool on a roll on an open mixer, add sulfur and accelerator when the temperature cools to below 80°C, turn over for 5 minutes, cool on the sheet for more than 4 hours for use.

[0075] Sheeting: put the mixed rubber into the open mixing mill for 8 minutes of hot refining, calender the hot-refined rubber, sheet out, and cool for standby use.

[0076] Vulcanization: Cross-stack the prepared rubber sheet and the processed steel plate together, and put the pre-installed bearing into the mold. After pressurized hot vulcanization, remove the mold and the seismic isolation rubber bearing is ready.

[0077] Experimental analysis:

[0078] Performance testing: The tensile mechanical properties of the rubber material of the present invention are tested according to the national standard GB / T528-1998, and the dynamic fatigue resistance is tested according to GB / T15584-1995.

[0079] Table 1. Dynamic fatigue properties

[0080]

[0081] Table 2. Tensile mechanical properties

[0082]

[0083] The present invention is composed of a laminated rubber bearing and a vertical vibration isolation device. The laminated rubber bearing can isolate horizontal earthquakes, and the vertical vibration isolation device can isolate subway vibrations. The vertical vibration isolation device can be decoupled from the horizontal isolation bearing through a limit guide device. The vertical vibration frequency of the device body is between 1 and 10 Hz, avoiding the main frequency of subway vibration between 10 and 80 Hz, and achieving a vertical vibration isolation effect. The rubber used is fatigue-resistant rubber, which ensures that the device has stable performance under long-term high-frequency use conditions.

[0084] The invention has low cost, and vertical vibration isolation and horizontal vibration isolation are decoupled from each other, with clear division of labor, excellent quality, and good vibration isolation effect. The rubber material used is a special fatigue-resistant rubber with strong functionality.

[0085] Bridge seismic isolation rubber bearings are in a vibrating environment for a long time, so the fatigue performance requirements are also higher. The development of high fatigue rubber bearings can improve the stability of the mechanical properties of seismic isolation rubber bearings and provide better protection for buildings such as roads and bridges.

[0086] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A high fatigue three-dimensional vibration dual control device, characterized in that: It comprises a laminated rubber support (1) and a vertical vibration isolation device (2) which are combined in series; The laminated rubber bearing (1) is formed by alternately laminating a layer of steel plate (8) and a layer of rubber (7) and then molding them; The vertical vibration isolation device (2) is formed by vulcanizing a rubber damping element, a steel rod (14) and a steel cylinder (13) in one piece; One end of the steel rod (14) is connected to the connecting plate, and the other end is arranged in the rubber damping element; A plurality of steel bars (14) are arranged to be spaced circumferentially around the center of the high fatigue three-dimensional vibration dual-control device; An upper connecting plate (4) and a lower connecting plate (5) are provided at both ends of the vertical vibration isolation device (2), and a limiting guide device (3) is provided between the upper connecting plate (4) and the lower connecting plate (5); The outer periphery of the laminated rubber support (1) is wrapped with protective rubber (10); The laminated rubber bearing (1) is provided with connecting plates (11) at the upper and lower ends, and the connecting plates are provided with first reserved holes (12) for connecting with the vertical vibration isolation device (2) or the building buttress; The vertical vibration isolation device (2) is connected to the laminated rubber support (1) or the building pier via a second reserved hole (6) on the connection plate; The rubber and rubber damping element are both high fatigue rubbers. The weight proportions of the components in the high fatigue rubber formula are as follows: 70-40 parts of natural rubber, 30-100 parts of butadiene rubber, 30-10 parts of trans-polyisoprene, 3-10 parts of zinc oxide, 2-5 parts of stearic acid, 1-3 parts of antioxidant RD, 1-3 parts of antioxidant 4010NA, 1-3 parts of antioxidant BLE-W, 1-3 parts of fatigue agent PL-600, 15-60 parts of carbon black N375, 5-15 parts of plasticizer, 1-3 parts of sulfur, 1-4 parts of accelerator, 1-5 parts of anti-reversion agent PK900, 0-3 parts of WAX, and 3-25 parts of resin. The plasticizer is 5-15 parts of DOS; the accelerator is 1-2 parts of accelerator DZ, 0-1 parts of accelerator DM, and 0-1 parts of TMTD; The vertical vibration frequency of the device body is between 1 and 10 Hz, avoiding the main frequency of subway vibration between 10 and 80 Hz, and achieving a vertical vibration isolation effect.

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