Anisotropic seismic isolation rubber bearing

Abstract

An anisotropic seismic isolation rubber bearing includes a bearing core and an inner connecting steel plate connected to the end surface thereof, wherein the bearing core includes a main body layer and an adjustment layer located at the end surface of the main body layer, wherein the adjustment layer includes N layers of functional adjustment steel plates that overlap with the adjustment rubber layer, and n straight grooves are provided on the adjustment layer, thereby dividing the adjustment layer into n-1 or n+1 adjustment units; n functional blocks are connected to the side of the inner connecting steel plate opposite to the adjustment layer, and the positions of the functional blocks correspond to the positions of the straight grooves and cooperate with the gaps of the straight grooves. The seismic isolation rubber bearing has a simple structure, a scientific design, and a clear seismic isolation mechanism. By adjusting the number of layers of the adjustment layer and the number of functional blocks, the displacement, stiffness, and damping of the bearing in all directions can be adjusted, so that the seismic isolation rubber bearing has anisotropic functions, thereby further optimizing the size and reinforcement of the piers according to the transverse and longitudinal cross-sectional characteristics of the bridge and the requirements of the seismic structure, thereby saving construction costs.

Description

Technical Field

[0001] The invention relates to a bridge component, in particular to an anisotropic seismic isolation rubber bearing. Background Art

[0002] Earthquake is a sudden and devastating natural disaster that poses a serious threat to human society and causes huge losses of life and property. One very important reason is that bridge projects suffered serious damage in earthquakes, cutting off the lifeline of transportation in the earthquake-stricken areas, causing great difficulties in disaster relief work, aggravating secondary disasters, and thus leading to huge economic losses. Therefore, in order to ensure the safety of bridge structures, seismic isolation technology must be introduced to bridges to improve the safety of bridges.

[0003] Bridge seismic isolation technology refers to the use of seismic isolation devices to extend the natural vibration period of the bridge structure, reduce the seismic displacement response of the piers, and reduce the acceleration response of the superstructure to ensure the safety of the bridge. The principle of bridge seismic isolation is to rely on seismic isolation devices to extend the natural vibration period of the bridge, increase the damping characteristics of the structure, and thus reduce the acceleration response of the bridge structure in an earthquake; at the same time, the seismic force can be evenly distributed to each pier, avoiding the concentration of seismic force on a certain pier.

[0004] Traditional seismic isolation devices mainly include seismic isolation rubber bearings, such as horizontal force dispersion rubber bearings, lead core seismic isolation rubber bearings, high damping seismic isolation rubber bearings, ultra-high damping seismic isolation rubber bearings, etc. With the continuous development of seismic isolation technology, some functional deficiencies of existing seismic isolation products have gradually emerged. With the continuous development of bridge structure design, more and more requirements are placed on the functions of bridge bearings. Usually, seismic isolation rubber bearings are designed with exactly the same performance in all horizontal directions. The problems are:

[0005] (1) As a result, the structural displacements and internal forces in the transverse and longitudinal directions can only be controlled by the same set of support parameters during the seismic design of bridges. One set of parameters is required to control the structural displacements and internal forces in both directions, which limits the design flexibility to a certain extent.

[0006] (2) In many cases, the cross-sectional characteristics and stiffness of the bridge substructure in the transverse and longitudinal directions are different. The same performance of the supports in the two horizontal directions may result in one direction meeting the seismic requirements while the seismic margin in the other direction may be large. However, the support parameters in the other direction cannot be changed, so the structural dimensions or reinforcement in this direction cannot be further optimized. Summary of the invention

[0007] The purpose of the present invention is to provide an anisotropic seismic isolation rubber bearing to overcome the above-mentioned shortcomings of the prior art.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] An anisotropic seismic isolation rubber bearing, comprising a bearing core and an inner connecting steel plate connected to the upper and lower end surfaces of the bearing core; the bearing core comprises a main body layer and an adjustment layer located on the end surface of the main body layer, the main body layer comprises M layers of reinforcing steel plates staggered and overlapped with rubber layers, the adjustment layer comprises N layers of functional adjustment steel plates staggered and overlapped with the adjustment rubber layer, the adjustment layer is provided with n horizontally arranged straight grooves, thereby dividing the adjustment layer into n-1 or n+1 adjustment units; the inner connecting steel plate is connected to n functional stoppers on a side opposite to the adjustment layer, the position of the functional stoppers corresponds to the position of the straight grooves and is in gap with the functional adjustment steel plates adjacent to the straight grooves; the main body layer, the adjustment layer, the functional stoppers and the inner connecting steel plates are vulcanized into one;

[0010] The above M+N satisfies the total number of layers of the support core design, the number of layers M of the main layer is not less than 3 layers, the number of layers N of the adjustment layer is any integer between 1 and 6, and the number n of straight grooves is any integer between 1 and 6.

[0011] A further technical solution is as follows: the support core comprises a main body layer and an adjustment layer located on the upper end surface of the main body layer and an adjustment layer on the lower end surface, the adjustment layer on the upper end surface comprises two layers of functional adjustment steel plates overlapping with the adjustment rubber layer, and three straight grooves are opened on the adjustment layer, thereby dividing the adjustment layer on the upper end surface into two or four adjustment units; the adjustment layer on the lower end surface comprises two layers of functional adjustment steel plates overlapping with the adjustment rubber layer, and three straight grooves are opened on the adjustment layer, thereby dividing the adjustment layer on the lower end surface into two or four adjustment units;

[0012] The inner side surface of the inner connecting steel plate opposite to the adjustment layer of the upper end face is connected with three functional stops, whose positions correspond to the three straight grooves of the adjustment layer of the upper end face and cooperate with the gaps of the functional adjustment steel plates adjacent to the straight grooves; the inner side surface of the inner connecting steel plate opposite to the adjustment layer of the lower end face is connected with three functional stops, whose positions correspond to the three straight grooves of the adjustment layer of the lower end face and cooperate with the gaps of the functional adjustment steel plates adjacent to the straight grooves.

[0013] Or: the support core includes a main body layer and an adjustment layer located on the upper end surface or the lower end surface of the main body layer, the adjustment layer includes 2 layers of functional adjustment steel plates that are staggered and overlapped with the adjustment rubber layer, and 3 straight grooves are opened on the adjustment layer, thereby dividing the adjustment layer into 2 or 4 adjustment units; the inner connecting steel plate is connected to 3 functional blocks on the side opposite to the adjustment layer, and the positions of the functional blocks correspond to the positions of the 3 straight grooves respectively and match the gaps of the functional adjustment steel plates adjacent to the straight grooves.

[0014] Furthermore: the cross-sections of the straight groove and the functional stopper are square or rectangular, and the functional stopper is connected to the inner connecting steel plate by welding or bolting.

[0015] Due to the above structure, compared with the prior art, the anisotropic seismic isolation rubber bearing of the present invention has the following beneficial effects:

[0016] 1. The anisotropic seismic isolation rubber bearing, the bearing core comprises a main body layer and an adjustment layer located on the end surface of the main body layer, the main body layer comprises M layers of reinforcing steel plates staggered and overlapped with the rubber layer, the adjustment layer comprises N layers of functional adjustment steel plates staggered and overlapped with the adjustment rubber layer, the adjustment layer is provided with n straight grooves, so as to divide the adjustment layer into n-1 or n+1 adjustment units; the inner connecting steel plate is connected to a side opposite to the adjustment layer with n functional stoppers, the position of the functional stoppers corresponds to the position of the straight grooves and is in gap with the functional adjustment steel plates adjacent to the straight grooves;

[0017] Since M+N satisfies the total number of layers of the bearing core design, if the number of layers N of the adjusting layer stiffening steel plate is large, the number of layers M of the main layer will be reduced, that is, the number of layers of the rubber layer involved in shearing will be reduced, and the thickness of the rubber layer involved in shearing will be reduced. In addition, the adjusting layer can be set on one side or on the upper and lower sides. Therefore, by adjusting the number of layers of the adjusting layer function adjusting steel plate and coordinating the number of functional stoppers, the displacement, stiffness and damping in all directions can be adjusted, so that the seismic isolation rubber bearing has anisotropic function.

[0018] 2. This is an anisotropic seismic isolation rubber bearing, the bearing structure can be type I bearing and type II bearing, the shape can be square, rectangular and circular, and the application range is wide; when the bearing structure is type I bearing, the upper inner connecting steel plate is connected to the upper outer connecting steel plate by inner connecting screws, the upper part of the upper outer connecting steel plate is connected to the sleeve bolts and buried at the bottom of the beam body, the lower inner connecting steel plate is connected to the lower outer connecting steel plate by inner connecting screws, and the lower part of the lower outer connecting steel plate is connected to the sleeve bolts and buried at the upper part of the cushion stone; when the bearing structure is type II bearing, the upper part of the upper inner connecting steel plate is connected to the sleeve bolts and buried at the bottom of the beam body, and the lower part of the lower inner connecting steel plate is connected to the sleeve bolts and buried at the upper part of the cushion stone;

[0019] 3. The adjustment layer and the rubber layer of the anisotropic seismic isolation rubber bearing are vulcanized as a whole, and a gap is provided between the functional stopper and the functional adjustment steel plate adjacent to the straight groove, and the gap is filled with rubber during vulcanization. The seismic isolation rubber bearing has a simple structure, scientific design, and a clear seismic isolation mechanism. The pier size and reinforcement can be further optimized according to the cross-sectional characteristics and reinforcement conditions of the transverse and longitudinal bridge directions combined with the seismic requirements of the structure, thereby saving construction costs.

[0020] The technical features of an anisotropic seismic isolation rubber bearing of the present invention are further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 to Figure 3 This is a schematic diagram of an anisotropic seismic isolation rubber bearing structure according to the first embodiment of the present invention:

[0022] Figure 1 It is a type II support. The upper and lower end surfaces of the support core have adjustment layers. Three functional blocks divide the adjustment layer into two adjustment units. Figure 2 It is a type I support. The upper and lower end surfaces of the support core have adjustment layers. Three functional blocks divide the adjustment layer into two adjustment units. Figure 3 It is a type II bearing, with adjustment layers on both the upper and lower end surfaces of the bearing core, and three functional blocks dividing the adjustment layer into four adjustment units;

[0023] Figure 4-5 This is a schematic diagram of the support core structure:

[0024] Figure 4 For the main view, Figure 5 It is a top view;

[0025] Figure 6-7 Schematic diagram of the internal connection steel plate structure:

[0026] Figure 6 For the main view, Figure 7 This is a bottom view;

[0027] Figure 8 to Figure 10 This is a schematic diagram of an anisotropic seismic isolation rubber bearing structure according to the second embodiment of the present invention:

[0028] Figure 8 It is a type I support. The upper end surface of the support core has an adjustment layer, and three functional blocks divide the adjustment layer into two adjustment units.

[0029] Fig. 9 It is a type I support. The lower end surface of the support core has an adjustment layer, and three functional blocks divide the adjustment layer into two adjustment units.

[0030] Fig.10 It is a type I support, with an adjustment layer on the lower end of the support core, and three functional blocks dividing the adjustment layer into four adjustment units;

[0031] Figure 11 to Figure 13 This is a schematic diagram of an anisotropic seismic isolation rubber bearing structure according to the third embodiment of the present invention:

[0032] Fig.11 It is a type I support. The upper and lower end surfaces of the support core have adjustment layers, and two functional blocks divide the adjustment layer into one adjustment unit. Fig.12 It is a type I support. The upper and lower end surfaces of the support core have adjustment layers. Two functional blocks divide the adjustment layer into three adjustment units. Fig.13 It is a type II support. The upper and lower end surfaces of the support core have adjustment layers, and two functional blocks divide the adjustment layer into three adjustment units.

[0033] Fig.14This is a schematic diagram of the structure of an anisotropic seismic isolation rubber bearing according to the fourth embodiment of the present invention (type I bearing, the upper and lower end surfaces of the bearing core body are both provided with adjustment layers, and four functional blocks divide the adjustment layer into three adjustment units);

[0034] In the figure: 1—inner connecting steel plate, 2—functional stopper, 3—adjusting layer, 31—functional adjusting steel plate, 32—adjusting rubber layer, 33—straight groove, 4—main body layer, 41—stiffening steel plate, 42—rubber layer, 5—sleeve bolt, 6—outer connecting steel plate, 7—connecting bolt. DETAILED DESCRIPTION

[0035] Embodiment 1

[0036] An anisotropic seismic isolation rubber bearing, comprising a bearing core and an inner connecting steel plate 1 connected to the upper and lower end surfaces of the bearing core; the bearing core comprises a main body layer 4 and an adjustment layer 3 located at the upper and lower end surfaces of the main body layer, the main body layer comprises 10 layers of stiffening steel plates 41 and a rubber layer 42 staggered and overlapped with the stiffening steel plates, the adjustment layers at the upper and lower end surfaces respectively comprise 2 layers of functional adjustment steel plates 31 and an adjustment rubber layer 32 staggered and overlapped with the functional adjustment steel plates, and the adjustment layers at the upper and lower end surfaces are respectively provided with 3 straight grooves 33, the 3 straight grooves are parallel to each other, thereby dividing the adjustment layer into 2 or 4 adjustment units;

[0037] The inner side surface of the inner connecting steel plate opposite to the adjustment layer on the upper end surface of the main layer is connected with three mutually parallel functional stoppers 2, the positions of the functional stoppers correspond to the positions of the three straight grooves and are in gap fit with the functional adjustment steel plates adjacent to the straight grooves;

[0038] The inner side surface of the inner connecting steel plate opposite to the adjusting layer at the lower end surface of the main layer is connected with three mutually parallel functional stoppers 2, the positions of the functional stoppers correspond to the positions of the three straight grooves and are matched with the gaps of the functional adjusting steel plates adjacent to the straight grooves; the main layer, the adjusting layer, the inner connecting steel plate and the functional stoppers are vulcanized into a whole, and during vulcanization, the gaps between the functional stoppers and the functional adjusting steel plates adjacent to the straight grooves are filled with rubber;

[0039] There are two layouts of the three straight grooves in the adjustment layer:

[0040] In the first arrangement, one straight groove is in the middle, and the other two are at the two ends of the adjustment layer, so that the adjustment layer is divided into two identical adjustment units. The positions of the three functional blocks of the inner connecting steel plate correspond to it, one is in the middle of the inner connecting steel plate, and the other two are at the two ends of the inner connecting steel plate (see Appendix Figure 1 and attached Figure 2 ).

[0041] The second arrangement is that one straight groove is in the middle, and the other two are located on both sides but not at the end of the adjustment layer, thereby dividing the adjustment layer into 4 identical adjustment units; the positions of the three functional stoppers of the inner connecting steel plate correspond to it, one is in the middle of the inner connecting steel plate, and the other two are located on both sides but not at the end of the inner connecting steel plate (see Appendix Figure 3 ).

[0042] Embodiment 2

[0043] An anisotropic seismic isolation rubber bearing, comprising a bearing core and an inner connecting steel plate 1 connected to the upper and lower end surfaces of the bearing core; the bearing core comprises a main body layer 4 and an adjustment layer 3 located at the upper end surface or the lower end surface of the main body layer, the main body layer comprises 12 layers of stiffening steel plates 41 and a rubber layer 42 staggered and overlapped with the stiffening steel plates, the adjustment layer comprises 2 layers of functional adjustment steel plates 31 and an adjustment rubber layer 32 staggered and overlapped with the functional adjustment steel plates, and the adjustment layer is provided with 3 straight grooves 33, which are parallel to each other, thereby dividing the adjustment layer into 2 or 4 adjustment units;

[0044] The inner connecting steel plate 1 is connected to a side opposite to the adjustment layer on the upper end face or the lower end face of the main body layer with three mutually parallel functional stoppers 2, the positions of the functional stoppers correspond to the positions of the three straight grooves and are matched with the gaps of the functional adjustment steel plates adjacent to the straight grooves; the main body layer, the adjustment layer, the inner connecting steel plate and the functional stoppers are vulcanized into a whole, and during vulcanization, the gaps between the functional stoppers and the functional adjustment steel plates adjacent to the straight grooves are filled with rubber;

[0045] There are two layouts of the three straight grooves in the adjustment layer:

[0046] In the first arrangement, one straight groove is in the middle, and the other two are at the two ends of the adjustment layer, thereby dividing the adjustment layer into two identical adjustment units; the positions of the three functional blocks of the inner connecting steel plate correspond to it, one is in the middle of the inner connecting steel plate, and the other two are at the two ends of the inner connecting steel plate (see Appendix Figure 8 and attached Fig. 9 ).

[0047] The second arrangement is that one straight groove is in the middle, and the other two are located on both sides but not at the end of the adjustment layer, thereby dividing the adjustment layer into 4 identical adjustment units; the positions of the three functional stoppers of the inner connecting steel plate correspond to it, one is in the middle of the inner connecting steel plate, and the other two are located on both sides but not at the end of the inner connecting steel plate (see Appendix Fig.10 ).

[0048] Embodiment 3

[0049] An anisotropic seismic isolation rubber bearing, comprising a bearing core and an inner connecting steel plate 1 connected to the upper and lower end surfaces of the bearing core; the bearing core comprises a main body layer 4 and an adjustment layer 3 located at the upper and lower end surfaces of the main body layer, the main body layer comprises 10 layers of stiffening steel plates 41 and a rubber layer 42 staggered and overlapped with the stiffening steel plates, the adjustment layers at the upper and lower end surfaces respectively comprise 2 layers of functional adjustment steel plates 31 and an adjustment rubber layer 32 staggered and overlapped with the functional adjustment steel plates, and the adjustment layers at the upper and lower end surfaces are respectively provided with 2 straight grooves 33, the 2 straight grooves are parallel to each other, thereby equally dividing the adjustment layer into 1 or 3 adjustment units;

[0050] The inner side surface of the inner connecting steel plate opposite to the adjustment layer on the upper end surface of the main body layer is connected with two mutually parallel functional stoppers 2, the positions of the functional stoppers correspond to the positions of the two straight grooves and are in gap fit with the functional adjustment steel plates adjacent to the straight grooves;

[0051] The inner side surface of the inner connecting steel plate opposite to the adjustment layer at the lower end surface of the main layer is connected with two mutually parallel functional stoppers 2, the positions of the functional stoppers correspond to the positions of the two straight grooves and are in gap fit with the functional adjustment steel plates adjacent to the straight grooves;

[0052] The main body layer, the adjustment layer, the inner connection steel plate and the functional stopper are vulcanized into a whole, and during the vulcanization, the gap between the functional stopper and the functional adjustment steel plate adjacent to the straight groove is filled with rubber;

[0053] There are two layouts of the two straight grooves in the adjustment layer:

[0054] In the first arrangement, two straight grooves are respectively located at the two ends of the adjustment layer, thereby dividing the adjustment layer into one adjustment unit; the positions of the two functional blocks of the inner connecting steel plate correspond to it, and are respectively connected to the two ends of the inner connecting steel plate (see attached Fig.11 ).

[0055] In the second arrangement, the two straight grooves are not located at the ends of the adjustment layer, but in the middle of the adjustment layer, thereby dividing the adjustment layer into three identical adjustment units; the positions of the three functional blocks of the inner connecting steel plate correspond to this, and are located on both sides but not in the middle of the inner connecting steel plate (see Appendix Fig.12 and attached Fig.13 ).

[0056] Embodiment 4

[0057] An anisotropic seismic isolation rubber bearing, comprising a bearing core and an inner connecting steel plate 1 connected to the upper and lower end surfaces of the bearing core; the bearing core comprises a main body layer 4 and an adjustment layer 3 located at the upper and lower end surfaces of the main body layer, the main body layer comprises 10 layers of stiffening steel plates 41 staggered and overlapped with a rubber layer 42, the adjustment layers at the upper and lower end surfaces respectively comprise 2 layers of functional adjustment steel plates 31 staggered and overlapped with an adjustment rubber layer 32, and the adjustment layers at the upper and lower end surfaces are respectively provided with 4 straight grooves 33, the 4 straight grooves are parallel to each other, thereby dividing the adjustment layer into 3 or 5 adjustment units;

[0058] The inner side surface of the inner connecting steel plate opposite to the adjustment layer on the upper end surface of the main body layer is connected with four mutually parallel functional blocks 2, the positions of the functional blocks correspond to the positions of the four straight grooves and match the straight groove gaps;

[0059] The inner side surface of the inner connecting steel plate opposite to the adjustment layer at the lower end surface of the main body layer is connected with four mutually parallel functional stoppers 2, the positions of the functional stoppers correspond to the positions of the four straight grooves and are in gap fit with the functional adjustment steel plates adjacent to the straight grooves;

[0060] The main body layer, the adjustment layer, the inner connection steel plate and the functional stopper are vulcanized into a whole, and during the vulcanization, the gap between the functional stopper and the functional adjustment steel plate adjacent to the straight groove is filled with rubber;

[0061] The arrangement of the four straight grooves of the adjustment layer in this embodiment is: 2 at the two ends and 2 in the middle, thereby dividing the adjustment layer into 3 equal adjustment units; the positions of the four functional stoppers of the inner connecting steel plate correspond to them, 2 connected to the two ends of the inner connecting steel plate and 2 connected to the middle of the inner connecting steel plate (see attached Fig.14 ).

[0062] In the above embodiment:

[0063] (i) The cross-section of the straight groove and the functional stopper is square or rectangular, and the functional stopper is connected to the inner connecting steel plate by welding or bolting;

[0064] (ii) The seismic isolation rubber bearing is either a Type I bearing (an inner connecting steel plate is connected to an outer connecting steel plate) or a Type II bearing. If it is a Type I bearing, during installation and use, the inner connecting steel plate at the upper end is connected to the upper outer connecting steel plate by inner connecting screws, the upper part of the upper outer connecting steel plate is connected to sleeve bolts and buried in the bottom of the beam body, and the inner connecting steel plate at the lower end is connected to the lower outer connecting steel plate by inner connecting screws, the lower part of the lower outer connecting steel plate is connected to sleeve bolts and buried in the upper part of the cushion stone; if it is a Type II bearing, during installation and use, the inner connecting steel plate at the upper end is connected to the lower outer connecting steel plate by sleeve bolts and buried in the bottom of the beam body, and the lower inner connecting steel plate is connected to the upper part of the cushion stone by sleeve bolts.

[0065] The working principle of an anisotropic seismic isolation rubber bearing is as follows: the steel plate is reinforced to increase the vertical stiffness of the bearing, so that it can effectively support the bridge superstructure and building structure. The rubber layer gives the bearing high elasticity and reset and load-bearing functions, and absorbs earthquake energy through large displacement shear deformation and hysteresis energy dissipation in the horizontal direction of the rubber. An anisotropic seismic isolation rubber bearing controls the thickness T of the rubber layer involved in shear in each direction by adjusting the functional stopper and the functional adjustment plate. r Different, realize displacement X in all directions, horizontal stiffness K h and damping h eq Adjustable, so as to achieve the design of the bridge in two horizontal directions. The formula of the horizontal stiffness and equivalent damping ratio of the support is as follows:

[0066] The formula of horizontal stiffness of support: Equivalent damping ratio formula: A—Effective Area

[0067] G—Rubber shear modulus

[0068] T r —Total thickness of rubber layer

[0069] X—Shear displacement

[0070] W d —Energy consumed per loading cycle

[0071] K h —Horizontal stiffness

[0072] h eq —Equivalent damping ratio.

Claims

1. An anisotropic seismic isolation rubber bearing, comprising a bearing core and inner connecting steel plates (1) connected to the upper and lower end surfaces of the bearing core; characterized in that: The support core comprises a main body layer (4) and an adjustment layer (3) located on the end surface of the main body layer, the main body layer (4) comprises M layers of reinforcing steel plates (41) which are staggered and overlapped with rubber layers (42), the adjustment layer (3) comprises N layers of functional adjustment steel plates (31) which are staggered and overlapped with adjustment rubber layers (32), the adjustment layer is provided with n horizontally arranged straight grooves (33), so as to divide the adjustment layer into n-1 or n+1 adjustment units; the inner connecting steel plate (1) is connected to n functional stoppers (2) on a side opposite to the adjustment layer, the position of the functional stoppers corresponds to the position of the straight grooves and is in gap with the functional adjustment steel plates adjacent to the straight grooves; the main body layer, the adjustment layer, the functional stoppers and the inner connecting steel plate are vulcanized into one body; The above M+N satisfies the total number of layers of the support core design, the number of layers M of the main layer is not less than 3 layers, the number of layers N of the adjustment layer is any integer between 1 and 6, and the number n of straight grooves is any integer between 1 and 6.

2. The anisotropic seismic isolation rubber bearing according to claim 1, characterized in that: The support core comprises a main body layer (4) and an adjustment layer located on the upper end surface of the main body layer and an adjustment layer (3) on the lower end surface, wherein the adjustment layer on the upper end surface comprises two layers of functional adjustment steel plates (31) that are staggered and overlapped with the adjustment rubber layer (32), and the adjustment layer is provided with three straight grooves (33), thereby dividing the adjustment layer on the upper end surface into two or four adjustment units; the adjustment layer on the lower end surface comprises two layers of functional adjustment steel plates (31) that are staggered and overlapped with the adjustment rubber layer (32), and the adjustment layer is provided with three straight grooves, thereby dividing the adjustment layer on the lower end surface into two or four adjustment units; The inner side surface of the inner connecting steel plate (1) opposite to the adjustment layer of the upper end surface is connected to three functional stoppers (2), whose positions correspond to the three straight grooves of the adjustment layer of the upper end surface and are gap-matched with the functional adjustment steel plates adjacent to the straight grooves; the inner side surface of the inner connecting steel plate (1) opposite to the adjustment layer of the lower end surface is connected to three functional stoppers (2), whose positions correspond to the three straight grooves of the adjustment layer of the lower end surface and are gap-matched with the functional adjustment steel plates adjacent to the straight grooves.

3. The anisotropic seismic isolation rubber bearing according to claim 1, characterized in that: The support core comprises a main body layer (4) and an adjustment layer (3) located at the upper end surface or the lower end surface of the main body layer, the adjustment layer comprises two layers of functional adjustment steel plates (31) which are staggered and overlapped with the adjustment rubber layer (32), and three straight grooves (33) are formed on the adjustment layer, so as to divide the adjustment layer into two or four adjustment units; the inner connecting steel plate (1) is connected to three functional stoppers (2) on a side opposite to the adjustment layer, the positions of the functional stoppers respectively corresponding to the positions of the three straight grooves and matching the gaps of the functional adjustment steel plates adjacent to the straight grooves.

4. An anisotropic seismic isolation rubber bearing according to claim 1, 2 or 3, characterized in that: The cross-sections of the straight groove (33) and the functional stopper (2) are square or rectangular, and the functional stopper is connected to the inner connecting steel plate by welding or bolting.

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