Plate type rubber shock insulation support

Abstract

The application discloses a bridge support technical field, and particularly relates to a plate type rubber shock insulation support, which specifically comprises a first connecting plate and a second connecting plate, a rubber shock insulation mechanism is arranged between the first connecting plate and the second connecting plate, and the rubber shock insulation mechanism is fixedly connected with the first connecting plate and the second connecting plate; a plurality of arc-shaped pressure bearing plates are further arranged between the first connecting plate and the second connecting plate, the arc-shaped pressure bearing plates longitudinally penetrate the rubber shock insulation mechanism, and the two ends of the arc-shaped pressure bearing plates are fixedly connected with the first connecting plate and the second connecting plate. The application utilizes the arc-shaped pressure bearing plates to form elastic support between the first connecting plate and the second connecting plate, and penetrates the arc-shaped pressure bearing plates through the rubber shock insulation mechanism, so that the deformation of the rubber shock insulation mechanism is limited and protected by the arc-shaped pressure bearing plates, and the risk of local excessive deformation of the rubber shock insulation mechanism is reduced.

Description

Technical Field

[0001] This application relates to the field of bridge bearing technology, and in particular to a plate rubber seismic isolation bearing. Background Technology

[0002] Seismic isolation bearings commonly used between bridges and piers include pot bearings, spherical steel bearings, and plate rubber seismic isolation bearings. Plate rubber seismic isolation bearings, in particular, are bridge bearing products made by embedding, bonding, and vulcanizing multiple layers of rubber sheets and thin steel plates. Plate rubber seismic isolation bearings primarily utilize their own vertical stiffness to bear vertical loads and reliably transfer these loads to the piers and abutments.

[0003] In related technologies, plate rubber seismic isolation bearings can improve their vertical load-bearing capacity by utilizing their multi-layered stacking characteristics. During the actual bearing of bridge loads, the vertical load between the bridge and piers varies. As the bridge's load increases, the compression borne by the plate rubber seismic isolation bearings also increases. If a large concentrated load occurs on the bridge, the portion of the plate rubber seismic isolation bearing structure closest to the bridge is prone to locally exceeding its load-bearing capacity due to the concentrated load. The effect of concentrated loads can cause localized plastic deformation or damage to the plate rubber seismic isolation bearings, leading to weakened or lost support capacity. Utility Model Content

[0004] This application discloses a plate rubber seismic isolation bearing to solve the technical problem that plate seismic isolation bearings in related bridge bearing technologies are prone to local damage when subjected to concentrated loads, resulting in reduced or lost support capacity.

[0005] To solve the above problems, this application adopts the following technical solution: An embodiment of this application provides a plate-type rubber vibration isolation bearing, specifically including a first connecting plate and a second connecting plate, with a rubber vibration isolation mechanism provided between the first connecting plate and the second connecting plate, and the rubber vibration isolation mechanism being fixedly connected to the first connecting plate and the second connecting plate respectively. Several arc-shaped pressure plates are also provided between the first connecting plate and the second connecting plate. The arc-shaped pressure plates run longitudinally through the rubber vibration isolation mechanism, and the two ends of the arc-shaped pressure plates are fixedly connected to the first connecting plate and the second connecting plate, respectively.

[0006] Furthermore, several arc-shaped pressure plates are parallel to each other.

[0007] Furthermore, the rubber vibration isolation mechanism includes several overlapping rubber plates, with steel plates spaced between adjacent rubber plates, and the steel plates are fixedly connected to the adjacent rubber plates. Both the rubber sheet and the steel sheet have arc-shaped grooves, and the arc-shaped bearing plate runs longitudinally through the arc-shaped grooves.

[0008] Furthermore, a first fixing plate is provided between the rubber vibration isolation mechanism and the first connecting plate, and the rubber vibration isolation mechanism and the first connecting plate are fixedly connected by the first fixing plate; A second fixing plate is provided between the rubber vibration isolation mechanism and the second connecting plate, and the rubber vibration isolation mechanism and the second connecting plate are fixedly connected by the second fixing plate. The lower surface of the first fixing plate and the upper surface of the second fixing plate are parallel to each other.

[0009] Furthermore, a number of return springs are provided between the first connecting plate and the second connecting plate. One end of the return spring is fixed to the first connecting plate, and the other end passes through the rubber vibration isolation mechanism and is fixed to the second connecting plate.

[0010] Furthermore, the return springs and arc-shaped bearing plates are spaced apart along the longitudinal direction of the bridge, and the spacing between adjacent arc-shaped bearing plates and return springs is the same.

[0011] Furthermore, the rubber vibration isolation mechanism is covered with an elastic sleeve, one end of which is fixed to the first connecting plate and the other end of which is fixed to the second connecting plate.

[0012] Furthermore, the elastic sheath includes a first fixing ring and a second fixing ring, both of which are sleeved on the outside of the rubber vibration isolation mechanism. The first fixing ring is fixed to the first connecting plate, and the second fixing ring is fixed to the second connecting plate. A corrugated tube is provided between the first fixing ring and the second fixing ring. The corrugated tube is sleeved on the outside of the rubber vibration isolation mechanism, with one end of the corrugated tube fixed to the first fixing ring and the other end fixed to the second fixing ring.

[0013] Furthermore, a connecting ring is provided between the first fixing ring and the bellows. The connecting ring is fixedly connected to the first fixing ring. A first retaining ring is provided on the side of the connecting ring near the bellows. The first retaining ring protrudes into the inner part of the connecting ring and surrounds the inner side of the connecting ring to form a retaining cavity. A second retaining ring is provided inside the retaining cavity. The outer side of the second retaining ring is fixed to the connecting ring, and the end face of the second retaining ring is fixed to the first retaining ring. The second retaining ring protrudes into the inner part of the first retaining ring, the end of the bellows is fixed to the end face of the second retaining ring, and the side of the bellows is fixed to the inner side of the first retaining ring.

[0014] Furthermore, several elastic protrusions are fixed on the upper surface of the first connecting plate and the lower surface of the second connecting plate.

[0015] The technical solution adopted in this application can achieve the following beneficial effects: This application uses a first connecting plate to bear the pressure transmission of the bridge and a second connecting plate to bear the pressure transmission of the piers. When bearing vertical loads, the rubber isolation mechanism buffers and dissipates the vertical load. During this process, if a concentrated load applies excessive local pressure to the rubber isolation mechanism, it can easily cause localized damage, affecting the bearing capacity of the bearing. This application utilizes an arc-shaped bearing plate to form an elastic support between the first and second connecting plates, and the arc-shaped bearing plate penetrates the rubber isolation mechanism. This restricts and protects the elastic deformation of the rubber isolation mechanism, enhancing its elastic recovery capability and reducing the risk of excessive localized deformation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the plate rubber seismic isolation bearing disclosed in the embodiments of this application; Figure 2 This is a cross-sectional structural schematic diagram of the rubber vibration isolation mechanism disclosed in the embodiments of this application; Figure 3 This is a cross-sectional schematic diagram of the plate rubber seismic isolation bearing disclosed in the embodiments of this application; Figure 4 This is disclosed in the embodiments of this application. Figure 3 A magnified view of part A in the middle.

[0018] In the picture: 1. First connecting plate; 2. Second connecting plate; 3. Rubber vibration isolation mechanism; 31. First fixing plate; 32. Second fixing plate; 33. Rubber plate; 34. Steel plate; 35. Arc-shaped bearing plate; 36. Return spring; 4. Elastic sleeve; 41. First fixing ring; 42. Connecting ring; 43. First retaining ring; 44. Second fixing ring; 45. Second retaining ring; 46. Corrugated pipe; 47. Retaining cavity; 5. Elastic protrusion. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In relevant bridge bearing technologies, plate rubber seismic isolation bearings are installed between the bridge and the piers to withstand the mutual compression between them. When the bridge beams are erected on the piers, the beams exert vertical pressure on the piers, and the plate rubber seismic isolation bearings bear vertical loads. The structure of plate rubber seismic isolation bearings is typically a layered structure formed by multiple support layers. Therefore, when subjected to vertical loads, the vertical load can be gradually dissipated through multiple layers of buffering, enabling the plate rubber seismic isolation bearings to withstand the heavy weight of the bridge beams.

[0022] Because bridges are erected on piers, the bridge beams bear the weight of objects passing over them during normal use. Therefore, the pressure exerted by the beams on the piers is determined not only by the weight of the beams themselves but also by the weight they bear. When the weight on the bridge suddenly increases or a particular area experiences a large load, it creates a concentrated load on the plate rubber seismic isolation bearings. This causes increased deformation in the support layer of the bearings near the beam. Concentrated loads are relatively common during normal bridge use. When concentrated loads occur, they can cause the load on the plate rubber seismic isolation bearings to exceed their bearing capacity, leading to localized damage. When localized damage occurs, the overall load-bearing capacity of the plate rubber seismic isolation bearings is impaired. If localized collapse occurs, the overall support capacity of the plate rubber seismic isolation bearings will be significantly reduced or even lost.

[0023] Through research, the inventors discovered that the aforementioned problems mainly stem from the fact that, under vertical loads, each support layer of the plate rubber seismic isolation bearing undergoes relatively independent deformation. Under stable pressure, this dispersion of deformation among each support layer maintains the bearing's support performance, increasing its maximum load capacity. However, when the load suddenly increases or a large localized area bears significant weight, the concentrated load cannot be dispersed promptly or evenly across the support layers. This concentrated load causes localized deformation in some support layers to exceed their limits, resulting in localized damage to the bearing.

[0024] In view of this, this application provides a plate rubber seismic isolation bearing, which is described below in conjunction with the attached... Figures 1 to 4 The specific implementation examples and application scenarios will be used to illustrate this in detail.

[0025] Please see Figure 2 As shown, an embodiment of this application provides a plate-type rubber seismic isolation bearing, specifically comprising a first connecting plate 1 and a second connecting plate 2. The first connecting plate 1 connects to the beam, and the second connecting plate 2 connects to the pier. The first connecting plate 1 and the second connecting plate 2, acting as connectors, establish a relatively stable support space between the bridge and the pier. A rubber seismic isolation mechanism 3 is provided between the first connecting plate 1 and the second connecting plate 2. The rubber seismic isolation mechanism 3 comprises several overlapping support layers. Within the support space, the rubber seismic isolation mechanism 3 provides support for the first connecting plate 1 and the second connecting plate 2, thereby achieving the purpose of supporting the beam on the pier. The rubber seismic isolation mechanism 3 is fixedly connected to both the first connecting plate 1 and the second connecting plate 2. This fixed connection ensures that the connection positions of the rubber seismic isolation mechanism 3 with the first connecting plate 1 and the second connecting plate 2 do not move relative to each other, thus guaranteeing sufficient support stability for the rubber seismic isolation mechanism 3.

[0026] Several arc-shaped pressure plates 35 are also provided between the first connecting plate 1 and the second connecting plate 2, and the arc-shaped pressure plates 35 extend longitudinally through the rubber vibration isolation mechanism 3. The arc-shaped pressure plates 35 are used to assist the overall load-bearing capacity of the rubber vibration isolation mechanism 3. The two ends of the arc-shaped pressure plates 35 are fixedly connected to the first connecting plate 1 and the second connecting plate 2, respectively. When the weight borne by the first connecting plate 1 suddenly increases or the local load is too large, the support layer of the rubber vibration isolation mechanism 3 near the bridge deforms, and at the same time, the arc-shaped pressure plates 35 deform and compress the various support layers of the rubber vibration isolation mechanism 3.

[0027] Because the deformation of the arc-shaped bearing plate 35 is greater in the middle, it exerts a greater pressure on the support layer in the middle of the rubber isolation mechanism 3, and a smaller pressure on the ends of the rubber isolation mechanism 3. The deformation of the arc-shaped bearing plate 35, through its own elastic support capacity and the pressure on the support layer in the middle of the rubber isolation mechanism 3, reduces the deformation of the support layers at both ends of the rubber isolation mechanism 3. This reduces the deformation of each support layer of the rubber isolation mechanism 3 and distributes the deformation more evenly, avoiding the problem of excessive local deformation.

[0028] Based on this, when the bridge beam is erected on the piers, it is inevitably affected by thermal expansion and contraction and changes in the geological environment. When these factors occur, the beam will move relative to the piers in the longitudinal direction. This displacement will cause longitudinal deformation of the plate rubber seismic isolation bearings. The inventors' research on related technologies has revealed that these technologies typically utilize the elastic deformation capacity of the plate rubber seismic isolation bearings to cope with the relative displacement between the beam and the piers. However, because the plate rubber seismic isolation bearings are a layered structure, they are prone to structural damage when the relative displacement between the beam and the piers is too large or when subjected to excessive concentrated loads. This damage can manifest as interlayer tearing, plastic deformation of the rubber, or partial structural collapse.

[0029] The arc-shaped bearing plate 35 in this embodiment can also enhance the ability of the rubber vibration isolation mechanism 3 to withstand longitudinal bridge forces. The arc-shaped bearing plate 35 can serve as a limiting structure for each support layer of the rubber vibration isolation mechanism 3, enhancing its ability to effectively resist external forces in the longitudinal bridge direction, making the structure more stable and reliable. For example, when the first connecting plate 1 is subjected to longitudinal bridge tension, the arc-shaped bearing plate 35 undergoes elastic deformation to prevent the movement of the first connecting plate 1, and the support layer of the rubber vibration isolation mechanism 3 also undergoes elastic deformation to prevent the movement of the first connecting plate 1. Because the arc-shaped bearing plate 35 penetrates the rubber vibration isolation mechanism 3, it limits the deformation of the support layer while restricting the displacement of the first connecting plate 1, preventing excessive deformation and damage to the support layer under the influence of the first connecting plate 1. Therefore, the arc-shaped bearing plate 35 not only improves the vertical load-bearing capacity of the rubber vibration isolation mechanism 3 but also strengthens the structural stability protection of the rubber vibration isolation mechanism 3, thereby reducing the risk of damage to the rubber vibration isolation mechanism 3.

[0030] In this embodiment of the application, by limiting the height of each support layer, the deformation of the arc-shaped bearing plate 35 and each support layer can be controlled within a controllable range. While maintaining the stability of the support space, it can effectively avoid problems such as local tilting of the support and instability of the support.

[0031] In some embodiments of this application, please refer to... Figure 2As shown, several arc-shaped pressure plates 35 are parallel to each other. By arranging these arc-shaped pressure plates 35 in parallel, the compression direction of the arc-shaped pressure plates 35 on the rubber vibration isolation mechanism 3 is the same, avoiding the situation where different arc-shaped pressure plates 35 compress the rubber vibration isolation mechanism 3 in different directions. This reduces the risk of the rubber vibration isolation mechanism 3 tearing due to the mutual resistance of different arc-shaped pressure plates 35.

[0032] In some embodiments of this application, the rubber isolation mechanism 3 includes several overlapping rubber plates 33. The rubber plates 33 act as elastic supports, providing elastic support and buffering capacity. A steel plate 34 is spaced between each pair of adjacent rubber plates 33, and the steel plate 34 is fixedly connected to each of the adjacent rubber plates 33. The steel plate 34 creates a gap and constraint between the rubber plates 33, thereby limiting the deformation range of each rubber plate 33 and providing stability for its deformation. All the rubber plates 33 and steel plates 34 are fixedly connected by adhesive bonding, thereby increasing the stress-bearing area of ​​the fixed connection and making the stress distribution between the rubber plates 33 and steel plates 34 more uniform. The steel plate 34 spacers between the rubber plates 33 more effectively prevent stress concentration, thus enhancing the load-bearing capacity of the rubber isolation mechanism 3.

[0033] The arc-shaped pressure plate 35 longitudinally penetrates the rubber plate 33 and the steel plate 34. Both the rubber plate 33 and the steel plate 34 have arc-shaped grooves, through which the arc-shaped pressure plate 35 passes. When the arc-shaped pressure plate 35 deforms, the rubber plate 33 undergoes elastic deformation under the direct compression and tension of the steel plate 34. The elastic restoring force of the rubber plate 33 effectively counteracts the effect of the arc-shaped pressure plate 35. While the rubber plate 33 and the steel plate 34 are resisting the arc-shaped pressure plate 35, the rubber vibration isolation mechanism 3 provides stable support for the first connecting plate 1 and the second connecting plate 2.

[0034] In some embodiments of this application, the first connecting plate 1 and the second connecting plate 2 can be embedded into the bridge and piers in a pre-embedded form, or the first connecting plate 1 and the second connecting plate 2 can be directly abutted or fixedly connected to the bridge and piers. A first fixing plate 31 is provided between the rubber vibration isolation mechanism 3 and the first connecting plate 1, and the rubber vibration isolation mechanism 3 and the first connecting plate 1 are fixedly connected by the first fixing plate 31; a second fixing plate 32 is provided between the rubber vibration isolation mechanism 3 and the second connecting plate 2, and the rubber vibration isolation mechanism 3 and the second connecting plate 2 are fixedly connected by the second fixing plate 32.

[0035] When the first connecting plate 1 and the second connecting plate 2 are pre-embedded within the bridge and piers, the connection stability is improved. However, the rubber isolation mechanism 3 exhibits dynamic deformation and is not suitable for embedding within the bridge and piers. Therefore, the first fixing plate 31 and the second fixing plate 32 are used to maintain the overall stability of the support space, which is beneficial for the stable support provided by the rubber isolation mechanism 3.

[0036] When the first connecting plate 1 and the second connecting plate 2 are directly connected to or fixedly connected to the bridge and piers, the first fixing plate 31 serves to separate the first connecting plate 1 from the rubber vibration isolation mechanism 3, and the second fixing plate 32 serves to separate the second connecting plate 2 from the rubber vibration isolation mechanism 3. With the separation provided by the first fixing plate 31 and the second fixing plate 32, the pressure on the rubber vibration isolation mechanism 3 is more evenly distributed, thereby reducing the impact of concentrated loads on the rubber vibration isolation mechanism 3.

[0037] Please see Figure 2 and Figure 3 As shown, the lower surface of the first fixing plate 31 and the upper surface of the second fixing plate 32 are parallel to each other. This further enhances the stability of the support space and the support stability of the bracket.

[0038] In some embodiments of this application, a plurality of return springs 36 are provided between the first connecting plate 1 and the second connecting plate 2. One end of the return spring 36 is fixed to the first connecting plate 1, and the other end passes through the rubber vibration isolation mechanism 3 and is fixed to the second connecting plate 2. The elastic restoring force of the return spring 36 forms a buffering effect between the first connecting plate 1 and the second connecting plate 2 and helps the rubber in the rubber vibration isolation mechanism 3 to complete its elastic recovery more quickly. The return spring 36 can effectively improve the bearing capacity of the rubber vibration isolation mechanism 3 for vertical loads, thereby increasing the overall load-bearing capacity of the rubber vibration isolation mechanism 3.

[0039] Through holes matching the return spring 36 can be provided on the rubber plate 33 and the steel plate 34 to prevent the extension and contraction of the return spring 36 from being affected.

[0040] In some embodiments of this application, the return springs 36 and the arc-shaped bearing plates 35 are spaced apart along the longitudinal direction of the bridge, with adjacent arc-shaped bearing plates 35 and return springs 36 having the same spacing. When subjected to external forces in the longitudinal direction, each return spring 36 and arc-shaped bearing plate 35 can resist the external forces with a more uniform deformation, further preventing structural damage caused by excessive local deformation. The return springs 36 may be shape memory alloy springs to further enhance the shape recovery capability of the rubber vibration isolation mechanism 3.

[0041] Since plate rubber seismic isolation bearings are mostly located outdoors, and bridges are typically subjected to significant wind, rain, and sun exposure, the rubber isolation mechanism 3 is prone to rapid aging when exposed to natural environments. Please refer to... Figure 1 and Figure 3 As shown in some embodiments of this application, the rubber vibration isolation mechanism 3 is covered with an elastic sleeve 4. One end of the elastic sleeve 4 is fixed to the first connecting plate 1, and the other end is fixed to the second connecting plate 2. The elastic sleeve 4 separates the rubber vibration isolation mechanism 3 from the external environment, thereby preventing the natural environment from directly corroding and damaging the rubber vibration isolation mechanism 3 and slowing down its aging. The elastic sleeve 4 can also use its own elastic expansion and contraction capabilities to assist in supporting the rubber vibration isolation mechanism 3, thereby improving the overall support capacity of the support.

[0042] In some embodiments of this application, the elastic sheath 4 includes a first fixing ring 41 and a second fixing ring 44. Both the first fixing ring 41 and the second fixing ring 44 are sleeved on the outside of the rubber vibration isolation mechanism 3. The first fixing ring 41 is fixed to the first connecting plate 1, and the second fixing ring 44 is fixed to the second connecting plate 2. A corrugated tube 46 is provided between the first fixing ring 41 and the second fixing ring 44. The corrugated tube 46 is sleeved on the outside of the rubber vibration isolation mechanism 3, with one end of the corrugated tube 46 fixed to the first fixing ring 41 and the other end fixed to the second fixing ring 44. The first fixing ring 41 and the second fixing ring 44 ensure the stability of the end of the corrugated tube 46 and enhance the protective capability of the corrugated tube 46 for the rubber vibration isolation mechanism 3. The corrugated pipe 46, combined with the first fixed ring 41 and the second fixed ring 44, encloses the rubber vibration isolation mechanism 3 as a whole, thereby preventing the rubber vibration isolation mechanism 3 from being affected by environmental factors such as sun exposure and wind and rain erosion, slowing down the aging of the rubber vibration isolation mechanism 3, and increasing its service life; at the same time, the corrugated pipe 46 can also play a certain role in shock absorption and buffering, which can reduce the stress deformation of the rubber plate 33 and the steel plate 34, thus further increasing their service life.

[0043] For some embodiments of this application, please refer to Figure 4As shown, a connecting ring 42 is provided between the first fixing ring 41 and the bellows 46. The connecting ring 42 is fixedly connected to the first fixing ring 41. A first retaining ring 43 is provided on the side of the connecting ring 42 near the bellows 46. The first retaining ring 43 protrudes into the inner part of the connecting ring 42 and surrounds the inner side of the connecting ring 42 to form a retaining cavity 47. A second retaining ring 45 is provided in the retaining cavity 47. The outer side of the second retaining ring 45 is fixed to the connecting ring 42, and the end face of the second retaining ring 45 is fixed to the first retaining ring 43. The second retaining ring 45 protrudes into the inner part of the first retaining ring 43, and the end of the bellows 46 is fixed to the end face of the second retaining ring 45. The side of the bellows 46 is fixed to the inner side of the first retaining ring 43. The connecting ring 42, the first retaining ring 43, and the second retaining ring 45 form a side fixation and end face fixation for the end of the bellows 46 near the first fixing ring 41. When the bridge experiences longitudinal displacement on the piers, the end of the corrugated pipe 46 near the bridge will be subjected to shear stress. If the corrugated pipe 46 is not side-fixed by the first retaining ring 43, the connection between the corrugated pipe 46 and the first fixing ring 41 will be easily damaged by shear stress. Therefore, by providing sufficient space through the connecting ring 42 and optimizing the force path at the end of the corrugated pipe 46 using the first retaining ring 43 and the second retaining ring 45, the connection stability of the end of the corrugated pipe 46 near the bridge is enhanced, and its resistance to shear stress failure is increased.

[0044] The second retaining ring 45 protrudes inward towards the inner part of the first retaining ring 43, causing the first retaining ring 43 and the second retaining ring 45 to form an overlapping state. The overlapping of the first retaining ring 43 and the second retaining ring 45 can avoid stress concentration at the position of the first retaining ring 43 and the second retaining ring 45, so as to achieve uniform stress distribution. In the event of an earthquake or other disaster, it can better reduce the damage of shear stress to the structure.

[0045] Because the side of the corrugated pipe 46 closest to the pier will not experience horizontal displacement in this embodiment, the end of the corrugated pipe 46 closest to the pier will not be damaged by excessive shear stress. Therefore, the enclosing structure of the connecting ring 42, the first retaining ring 43, and the second retaining ring 45 is only provided at the first fixing ring 41.

[0046] For some embodiments of this application, please refer to Figure 1 As shown, several elastic protrusions 5 are fixed on the upper surface of the first connecting plate 1 and the lower surface of the second connecting plate 2.

[0047] To increase the friction between the first connecting plate 1 and the second connecting plate 2 and the bridge and piers, elastic protrusions 5 are respectively provided on the upper surface of the first connecting plate 1 and the lower surface of the second connecting plate 2. The elastic protrusions 5 are made of rubber, which can prevent the plate rubber seismic isolation bearing from sliding during use. When the first connecting plate 1 and the second connecting plate 2 are not pre-embedded in the bridge and piers, the elastic protrusions 5 can enhance the connection stability between the first connecting plate 1 and the bridge and the connection stability between the second connecting plate 2 and the piers by increasing the friction. When the first connecting plate 1 and the second connecting plate 2 are pre-embedded in the bridge and piers, the elastic protrusions 5 can play an anchoring role, thereby enhancing the connection stability.

[0048] It should be noted that, in this document, 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 a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0049] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0050] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A plate-type rubber seismic isolation bearing, characterized in that, It includes a first connecting plate (1) and a second connecting plate (2), and a rubber vibration isolation mechanism (3) is provided between the first connecting plate (1) and the second connecting plate (2). The rubber vibration isolation mechanism (3) is fixedly connected to the first connecting plate (1) and the second connecting plate (2) respectively. Several arc-shaped pressure plates (35) are provided between the first connecting plate (1) and the second connecting plate (2). The arc-shaped pressure plates (35) extend longitudinally through the rubber vibration isolation mechanism (3). The two ends of the arc-shaped pressure plates (35) are fixedly connected to the first connecting plate (1) and the second connecting plate (2) respectively.

2. The plate-type rubber seismic isolation bearing according to claim 1, characterized in that, Several of the aforementioned arc-shaped pressure plates (35) are parallel to each other.

3. A plate-type rubber seismic isolation bearing according to claim 1 or 2, characterized in that, The rubber vibration isolation mechanism (3) includes several overlapping rubber plates (33), and steel plates (34) are spaced between two adjacent rubber plates (33). The steel plates (34) are fixedly connected to the two adjacent rubber plates (33). Both the rubber plate (33) and the steel plate (34) are provided with arc-shaped grooves, and the arc-shaped pressure plate (35) runs longitudinally through the arc-shaped grooves.

4. A plate-type rubber seismic isolation bearing according to claim 3, characterized in that, A first fixing plate (31) is provided between the rubber vibration isolation mechanism (3) and the first connecting plate (1), and the rubber vibration isolation mechanism (3) and the first connecting plate (1) are fixedly connected by the first fixing plate (31); A second fixing plate (32) is provided between the rubber vibration isolation mechanism (3) and the second connecting plate (2), and the rubber vibration isolation mechanism (3) and the second connecting plate (2) are fixedly connected by the second fixing plate (32); The lower surface of the first fixing plate (31) and the upper surface of the second fixing plate (32) are parallel to each other.

5. A plate-type rubber seismic isolation bearing according to claim 1 or 2, characterized in that, A plurality of reset springs (36) are provided between the first connecting plate (1) and the second connecting plate (2). One end of the reset spring (36) is fixed to the first connecting plate (1), and the other end passes through the rubber vibration isolation mechanism (3) and is fixed to the second connecting plate (2).

6. A plate-type rubber seismic isolation bearing according to claim 5, characterized in that, The reset spring (36) and the arc-shaped bearing plate (35) are spaced apart along the longitudinal direction of the bridge, and the spacing between adjacent arc-shaped bearing plates (35) and reset springs (36) is the same.

7. A plate-type rubber seismic isolation bearing according to claim 1, characterized in that, The rubber vibration isolation mechanism (3) is covered with an elastic sleeve (4), one end of which is fixed to the first connecting plate (1) and the other end is fixed to the second connecting plate (2).

8. A plate-type rubber seismic isolation bearing according to claim 7, characterized in that, The elastic sheath (4) includes a first fixing ring (41) and a second fixing ring (44). The first fixing ring (41) and the second fixing ring (44) are both sleeved on the outside of the rubber vibration isolation mechanism (3). The first fixing ring (41) is fixed to the first connecting plate (1), and the second fixing ring (44) is fixed to the second connecting plate (2). A corrugated tube (46) is provided between the first fixing ring (41) and the second fixing ring (44). The corrugated tube (46) is sleeved outside the rubber vibration isolation mechanism (3). One end of the corrugated tube (46) is fixed to the first fixing ring (41), and the other end is fixed to the second fixing ring (44).

9. A plate-type rubber seismic isolation bearing according to claim 8, characterized in that, A connecting ring (42) is provided between the first fixing ring (41) and the bellows (46). The connecting ring (42) is fixedly connected to the first fixing ring (41). A first retaining ring (43) is provided on the side of the connecting ring (42) near the bellows (46). The first retaining ring (43) protrudes into the inner part of the connecting ring (42) and surrounds the inner side of the connecting ring (42) to form a retaining cavity (47). The cavity (47) is provided with a second retaining ring (45), the outer side of the second retaining ring (45) is fixed to the connecting ring (42), and the end face of the second retaining ring (45) is fixed to the first retaining ring (43); The second retaining ring (45) protrudes into the inner part of the first retaining ring (43), the end of the bellows (46) is fixed to the end face of the second retaining ring (45), and the side of the bellows (46) is fixed to the inner side of the first retaining ring (43).

10. A plate-type rubber seismic isolation bearing according to claim 1, characterized in that, The upper surface of the first connecting plate (1) and the lower surface of the second connecting plate (2) are each fixed with a number of elastic protrusions (5).

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