Friction pendulum seismic mitigation and isolation spherical support and road and bridge structure

Abstract

The utility model provides a friction pendulum seismic mitigation and isolation spherical support and a road and bridge structure, and relates to the field of bridge supports. A friction pendulum seismic mitigation and isolation spherical support is used for being arranged between a bridge body and a bridge pier of a bridge and comprises an upper support plate, a first friction pair, a spherical crown, a second friction pair and a lower support plate which are sequentially arranged from top to bottom, the bottom face of the spherical crown is a first convex spherical face protruding towards the lower support plate, and the top face of the lower support plate is a first concave spherical face matched with the first convex spherical face. The second friction pair is provided with a through hole, a first limiting piece is arranged on the top face of the lower seat plate, a second limiting piece is arranged on the bottom face of the spherical crown, and the first limiting piece or the second limiting piece penetrates through the through hole and is matched with the through hole to limit rotation displacement between the spherical crown and the lower seat plate.

Description

Technical Field

[0001] The present application relates to the field of bridge bearings, and more specifically, to a friction pendulum seismic isolation spherical bearing and a road-bridge structure. Background Art

[0002] The friction pendulum seismic isolation spherical bearing is a commonly used bridge bearing. It is widely used because of its clear function and excellent performance. It can usually be used as a bridge spherical bearing to play the functions of bearing, adapting to temperature displacement, and rotation angle. During an earthquake, it can be transformed from a bridge movable bearing to a friction pendulum seismic isolation bearing by shearing off the horizontal constraint member. By designing the pendulum length of the friction pendulum bearing, the natural vibration period of the structure is extended, the seismic response of the structure is reduced, and the input structural energy is dissipated through the friction between the friction pairs.

[0003] During the use of conventional friction pendulum seismic isolation spherical bearings, the ball crown will produce excessive rotational displacement, affecting the overall stability of the friction pendulum seismic isolation spherical bearing and the vehicle. Utility Model Content

[0004] The purpose of the present application is to provide a friction pendulum seismic isolation spherical bearing and a road and bridge structure, so as to improve the technical problem that during the use of the existing conventional friction pendulum seismic isolation spherical bearing, the ball crown will produce excessive rotational displacement, affecting the overall stability of the friction pendulum seismic isolation spherical bearing and the vehicle.

[0005] In the first aspect, an embodiment of the present application provides a friction pendulum seismic isolation spherical bearing for being arranged between the beam and the pier of a bridge, comprising an upper seat plate, a first friction pair, a ball crown, a second friction pair and a lower seat plate arranged in sequence from top to bottom, the bottom surface of the ball crown presents a first convex spherical surface protruding toward the lower seat plate, the top surface of the lower seat plate presents a first concave spherical surface matching with the first convex spherical surface, the second friction pair is provided with a through hole, the top surface of the lower seat plate is provided with a first limit piece, the bottom surface of the ball crown is provided with a second limit piece, the first limit piece or the second limit piece passes through the through hole and cooperates to limit the rotational displacement between the ball crown and the lower seat plate.

[0006] In the above implementation process, the present application provides a first limit member on the top surface of the lower seat plate, and a second limit member on the bottom surface of the ball crown. The first limit member and the second limit member cooperate to limit the rotational displacement between the ball crown and the lower seat plate within a certain range, thereby meeting the rotation angle requirements of the friction pendulum seismic isolation ball bearing and avoiding excessive rotational displacement of the ball crown, thereby ensuring the overall stability of the friction pendulum seismic isolation ball bearing and the vehicle.

[0007] In a possible implementation, the first limiting member is a limiting groove, and the second limiting member is a limiting column; or, the first limiting member is a limiting column, and the second limiting member is a limiting groove.

[0008] The present application sets the first limit member as a limit groove or a limit column, and the second limit member as a limit column or a limit groove corresponding to the first limit member, and sets the limit column in the limit groove to limit the rotational displacement of the ball crown, thereby avoiding excessive rotational displacement of the ball crown and ensuring the overall stability of the friction pendulum seismic isolation ball bearing and the vehicle.

[0009] In a possible implementation, the circumferential distance from the inner wall of the limiting groove to the cylindrical surface of the limiting column is A, where A=spherical radius of the first convex spherical surface×rotation angle of the spherical crown, and the rotation angle of the spherical crown is 0.02-0.06Rad.

[0010] The present application can limit the excessive rotational displacement of the spherical crown and prevent the spherical crown from being completely restricted by setting a suitable distance from the inner wall of the limiting groove to the outer wall of the limiting column.

[0011] In a possible implementation, the friction pendulum seismic isolation spherical bearing also includes a connecting assembly, which includes a shear column, one end of the shear column is fixedly connected to the upper seat plate, and the other end is fixedly connected to the lower seat plate, and a shear weakening surface is arranged on the shear column between the upper seat plate and the lower seat plate.

[0012] The present application provides a shear weakening surface on the shear column between the upper seat plate and the lower seat plate. When the horizontal load force is greater than the designed shear force, the shear weakening surface of the shear column can promptly undergo brittle fracture, and the horizontal shear force can be accurately controlled, so that the friction pendulum seismic isolation spherical bearing can promptly play its seismic isolation function.

[0013] In a possible implementation, the upper seat plate is connected to a plurality of connection components on both sides of a first direction of a road surface width, and the plurality of connection components on each side are spaced apart along a second direction of a road surface length.

[0014] The present application connects a plurality of connection components on both sides of the upper seat plate in the first direction of the road width, and limits the friction pendulum seismic isolation ball bearing in the first direction before the seismic isolation work, thereby forming a one-way friction pendulum seismic isolation ball bearing.

[0015] In a possible implementation, a plurality of connection assemblies are evenly spaced apart in the circumferential direction of the upper seat plate.

[0016] The present application arranges a plurality of connection components evenly spaced in the circumferential direction of the upper seat plate, and limits the friction pendulum seismic isolation spherical bearing in the first direction and the second direction before the seismic isolation work, so as to form a fixed friction pendulum seismic isolation spherical bearing.

[0017] In a possible implementation, the connection assembly also includes a connecting seat, which includes a horizontal plate and a vertical plate connected to each other, the end of the horizontal plate away from the vertical plate is connected to the lower seat plate, the end of the vertical plate away from the horizontal plate is provided with a first countersunk hole, and the bottom surface of the upper seat plate is provided with a second countersunk hole, one end of the shear column is embedded and connected in the first countersunk hole, and the other end of the shear column is embedded and connected in the second countersunk hole, and the shear weakening surface is located at the connection between the upper seat plate and the vertical plate.

[0018] The present application connects the upper seat plate and the lower seat plate by means of a connecting seat and a shear column. At the same time, the shear weakening surface of the shear column is arranged at the connection between the upper seat plate and the vertical plate. When the horizontal load force is greater than the designed shear force, the shear weakening surface of the shear column promptly breaks, thereby separating the connected upper seat plate and the lower seat plate, allowing the first friction pair to slide, and promptly exerting the seismic isolation function.

[0019] In a possible implementation, the shear weakening surface is an annular weakening surface, and the circumference of the shear weakening surface is evenly recessed toward the inside of the shear column.

[0020] The present application arranges an annular weakening surface on the shear column, and the circumference of the shear weakening surface is evenly recessed toward the inside of the shear column, so that when the shear column is subjected to a horizontal load greater than the designed shear force, it is easier for the shear weakening surface to promptly fracture, so that the friction pendulum seismic isolation spherical bearing can promptly play its seismic isolation function.

[0021] In one possible implementation, the first friction pair includes a first sliding plate and a first friction plate, the first sliding plate is fixed to the bottom surface of the upper seat plate, and the first friction plate is embedded and fixed to the top surface of the spherical crown; the second friction pair includes a second sliding plate and a second friction plate, the second sliding plate is fixed to the bottom surface of the spherical crown, the second friction plate is embedded and fixed to the top surface of the lower seat plate, and the second friction plate is provided with a through hole.

[0022] The present application sets a first friction pair and a second friction pair, the upper seat plate slides relative to the ball crown through the first friction pair, and the ball crown rotates relative to the lower seat plate through the second friction pair, thereby realizing the seismic isolation function of the friction pendulum seismic isolation spherical bearing.

[0023] In the second aspect, an embodiment of the present application provides a road bridge structure, including a road surface, a beam, bridge piers and the friction pendulum seismic isolation spherical bearing provided in the first aspect, wherein the beam is fixed to the bottom surface of the road surface along a first direction, and at least one friction pendulum seismic isolation spherical bearing is arranged between the beam and the bridge pier.

[0024] The present application can stably support the road surface and promptly exert the seismic isolation function by arranging at least one friction pendulum seismic isolation spherical bearing provided by the first aspect between the beam body and the pier of the bridge along the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of a road and bridge structure provided in an embodiment of the present application.

[0027] Figure 2 This is a first structural schematic diagram of the friction pendulum seismic isolation spherical bearing provided in an embodiment of the present application.

[0028] Figure 3 for Figure 2 Bottom perspective view.

[0029] Figure 4 A second structural schematic diagram of the friction pendulum seismic isolation spherical bearing provided in an embodiment of the present application.

[0030] Figure 5 for Figure 4 Bottom perspective view.

[0031] Figure 6 This is a third structural schematic diagram of the friction pendulum seismic isolation spherical bearing provided in an embodiment of the present application.

[0032] Figure 7 for Figure 6 Bottom perspective view.

[0033] Figure 8 A schematic diagram of a shear column provided in an embodiment of the present application.

[0034] Icons: 1-road and bridge structure; 11-road surface; 12-beam; 13-bridge pier; 2-friction pendulum seismic isolation spherical bearing; 21-upper seat plate; 22-first friction pair; 221-first sliding plate; 222-first friction plate; 23-spherical crown; 231-second limiter; 24-second friction pair; 241-second sliding plate; 242-second friction plate; 25-lower seat plate; 251-first limiter; 26-shear column; 261-shear weakening surface; 27-horizontal plate; 28-vertical plate; 29-sliding pair; 291-guide sliding bar; 292-third sliding plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of this application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Example

[0042] The present application intends to improve the technical problem that the ball cap 23 of the conventional friction pendulum vibration isolation spherical bearing 2 will produce excessive rotation displacement during use, affecting the overall stability of the friction pendulum vibration isolation spherical bearing 2, and proposes a road bridge structure 1, such as Figure 1 As shown, it includes a road surface 11, a beam body 12, a bridge pier 13 and a friction pendulum seismic isolation spherical bearing 2. Along the first direction of the width of the road surface 11, the beam body 12 is fixed to the bottom surface of the road surface 11, and two friction pendulum seismic isolation spherical bearings 2 are arranged between the beam body 12 and the bridge pier 13 at intervals.

[0043] The two friction pendulum vibration-isolating spherical bearings 2 are spaced apart along the first direction between the beam 12 and the bridge pier 13 , and can stably support the road surface 11 and timely exert the vibration-isolating function.

[0044] The present application embodiment provides a friction pendulum vibration isolation spherical bearing 2, such as Figure 2-Figure 3 As shown, it is used to be arranged between the beam body 12 and the pier 13 of the bridge, and includes an upper seat plate 21, a first friction pair 22, a spherical crown 23, a second friction pair 24 and a lower seat plate 25 arranged in sequence from top to bottom. The bottom surface of the spherical crown 23 is a first convex spherical surface protruding toward the lower seat plate 25, and the top surface of the lower seat plate 25 is a first concave spherical surface matched with the first convex spherical surface. The second friction pair 24 is provided with a through hole, and the top surface of the lower seat plate 25 is provided with a first limiting member 251, and the bottom surface of the spherical crown 23 is provided with a second limiting member 231. The first limiting member 251 or the second limiting member 231 passes through the through hole and cooperates to limit the rotational displacement between the spherical crown 23 and the lower seat plate 25. The first limiting member 251 and the second limiting member 231 cooperate to limit the rotation displacement of the ball crown 23 between the upper seat plate 21 and the lower seat plate 25 within a certain range, meeting the rotation angle requirements of the friction pendulum vibration isolation spherical bearing 2, while avoiding excessive rotation displacement of the ball crown 23, thereby ensuring the overall stability of the friction pendulum vibration isolation spherical bearing 2 and the vehicle. Specifically, the first limiting member 251 is a limiting groove, and the second limiting member 231 is a limiting column. In other embodiments, the first limiting member 251 can also be a limiting column, and the second limiting member 231 can be a limiting groove.

[0045] The upper seat plate 21 of the friction pendulum seismic isolation spherical bearing 2 provided in this embodiment has no limit in the first direction of the width of the road surface 11 and in the second direction of the length of the road surface 11. The upper seat plate 21 can be displaced in both directions in the first direction and the second direction relative to the ball crown 23 through sliding between the first friction pairs 22, thereby forming a bidirectional friction pendulum seismic isolation spherical bearing 2. When an earthquake occurs, the sliding displacement in the first direction and the second direction can be achieved directly through the sliding between the first friction pairs 22, and the rotation angle can be achieved through the sliding between the second friction pairs 24, thereby extending the vibration period of the structure, effectively isolating the beam body 12 and the bridge pier 13, and preventing most of the earthquake energy from being transmitted from the underground bridge pier 13 to the beam body 12 and the road surface 11, thereby effectively exerting the seismic isolation function of the friction pendulum seismic isolation spherical bearing 2.

[0046] In some embodiments, the circumferential distance from the inner wall of the limiting groove to the cylindrical surface of the limiting column is A, A=spherical radius of the first convex spherical surface×rotation angle of the spherical crown 23, and the rotation angle of the spherical crown 23 is 0.02-0.06Rad. As an example, the rotation angle of the spherical crown 23 can be, but is not limited to, 0.02Rad, 0.03Rad, 0.04Rad, 0.05Rad, and 0.06Rad. The spherical radius of the first convex spherical surface can be set according to actual needs. The rotation angle of the spherical crown 23 is the rotation angle in any direction. By setting an appropriate distance from the inner wall of the limiting groove to the cylindrical surface of the limiting column in the circumferential direction, it can not only limit the excessive rotational displacement of the spherical crown 23, but also avoid the spherical crown 23 being completely restricted, so as to meet the rotation angle requirements of the friction pendulum seismic isolation spherical bearing 2, and ensure the overall stability. As an example, the vertical distance from any circumferential point of the cylindrical surface of the limiting column to the inner wall of the limiting groove is equal.

[0047] The embodiment of the present application provides a second structure of a friction pendulum vibration isolation spherical bearing 2, such as Figure 4-Figure 5 As shown, the friction pendulum seismic isolation spherical bearing 2 also includes a connection component, which includes a shear column 26, one end of which is fixedly connected to the upper seat plate 21, and the other end is fixedly connected to the lower seat plate 25, and a shear weakening surface 261 is provided on the shear column 26 between the upper seat plate 21 and the lower seat plate 25. Specifically, a plurality of connection components are connected to both sides of the upper seat plate 21 in the first direction, and a plurality of connection components on each side are arranged at intervals along the second direction. When the horizontal load force is greater than the designed shear force, the shear weakening surface 261 provided on the shear column 26 will promptly break, so that the friction pendulum seismic isolation spherical bearing 2 can promptly play the seismic isolation function.

[0048] The friction pendulum seismic isolation spherical bearing 2 provided in this embodiment has a plurality of connection components connected to both sides of the first direction of the upper seat plate 21, so that the upper seat plate 21 has a limit in the first direction, and the upper seat plate 21 can be unidirectionally displaced relative to the ball crown 23 along the second direction through sliding between the first friction pairs 22, thereby forming a unidirectional friction pendulum seismic isolation spherical bearing 2. When an earthquake occurs, when the horizontal force that the bridge can withstand is greater than the shear force of the shear column 26, the plurality of shear columns 26 of the plurality of connection components all break brittlely, and the sliding displacement in the first and second directions is achieved through sliding between the first friction pairs 22, and the rotation angle is achieved through sliding between the second friction pairs 24, thereby extending the vibration period of the structure, thereby exerting the seismic isolation function of the friction pendulum seismic isolation spherical bearing 2.

[0049] In some embodiments, the connection assembly further comprises a connection seat, the connection seat comprises a cross plate 27 and a vertical plate 28 connected to each other, the end of the cross plate 27 away from the vertical plate 28 is connected to the lower seat plate 25 through a sliding pair 29, the sliding pair 29 comprises a guide sliding bar 291 and a third sliding plate 292, the guide sliding bar 291 is fixed to the side wall of the lower seat plate 25, the third sliding plate 292 is fixed to the end of the cross plate 27 away from the vertical plate 28, the guide sliding bar 291 and the third sliding plate 292 both extend along the second direction; as an example, the third sliding plate 292 is made of mirror stainless steel. A first countersunk hole is provided at one end of the vertical plate 28 away from the cross plate 27, a second countersunk hole is provided on the bottom surface of the upper seat plate 21, one end of the shear column 26 is embedded and connected in the first countersunk hole, the other end of the shear column 26 is embedded and connected in the second countersunk hole, and the shear weakening surface 261 is located at the connection between the upper seat plate 21 and the vertical plate 28.

[0050] When an earthquake occurs, when the horizontal load force is greater than the designed shear force of the shear column 26, the multiple shear columns 26 connected on both sides of the first direction all break brittlely at the shear weakening surface 261, and the sliding displacement in the first direction and the second direction is achieved through the sliding between the first friction pairs 22, thereby timely exerting the seismic isolation function.

[0051] The present application embodiment provides a third structure of a friction pendulum vibration isolation spherical bearing 2, such as Figure 6-Figure 7 As shown, a plurality of connection components are evenly spaced on the circumference of the upper seat plate 21. The upper seat plate 21 of the friction pendulum vibration isolation spherical bearing 2 provided in this embodiment is evenly spaced on the circumference, so that the upper seat plate 21 has limit positions in both the first direction and the second direction, thus forming a fixed friction pendulum vibration isolation spherical bearing 2.

[0052] In some embodiments, the connection assembly further includes a connection seat, which includes a horizontal plate 27 and a vertical plate 28 connected to each other, one end of the horizontal plate 27 away from the vertical plate 28 is fixedly connected to the lower seat plate 25, one end of the vertical plate 28 away from the horizontal plate 27 is provided with a first countersunk hole, and the bottom surface of the upper seat plate 21 is provided with a second countersunk hole, one end of the shear column 26 is embedded and connected in the first countersunk hole, and the other end of the shear column 26 is embedded and connected in the second countersunk hole, and the shear weakened surface 261 is located at the connection between the upper seat plate 21 and the vertical plate 28. As an example, the two ends of the shear column 26 can be connected by threaded anchoring, but not limited to.

[0053] Before the seismic reduction and isolation work, the upper seat plate 21 cannot be displaced because multiple connecting components are arranged at circumferential intervals; when an earthquake occurs, when the horizontal load force is greater than the designed shear force of the shear column 26, the multiple shear columns 26 arranged circumferentially all break brittlely at the shear weakening surface 261, and the displacement in the first direction and the second direction is achieved through the sliding between the first friction pairs 22, thereby timely exerting the seismic reduction and isolation function.

[0054] In some embodiments, Figure 8 As shown, the shear weakening surface 261 is an annular weakening surface, and the circumference of the shear weakening surface 261 is uniformly concave toward the inside of the shear column 26. As an example, the cross-section of the shear weakening surface 261 is a V-shaped structure. In other embodiments, the cross-section of the shear weakening surface 261 may be, but is not limited to, a concave or arc-shaped structure. When the shear column 26 is subjected to a horizontal load greater than the designed shear force, it can accurately and timely fracture from the shear weakening surface 261, so that the friction pendulum seismic isolation spherical bearing 2 can play the seismic isolation function in time. As an example, the shear column 26 may be, but is not limited to, made of high-strength brittle steel, such as SNCM630. The cross-sectional size of the shear weakening surface 261 is calculated and determined based on the actual required shear force design strength requirements.

[0055] In some embodiments, the first friction pair 22 includes a first sliding plate 221 and a first friction plate 222, the first sliding plate 221 is fixed to the bottom surface of the upper seat plate 21, and the first friction plate 222 is embedded and fixed to the top surface of the ball crown 23; the second friction pair 24 includes a second sliding plate 241 and a second friction plate 242, the second sliding plate 241 is fixed to the bottom surface of the ball crown 23, the second friction plate 242 is embedded and fixed to the top surface of the lower seat plate 25, and the second friction plate 242 is provided with a through hole. As an example, the inner diameter of the through hole matches the inner diameter of the limiting groove, so that the limiting column passes through the through hole and is embedded in the limiting groove to limit the rotation of the ball crown 23, so that the ball crown 23 will not produce excessive rotation displacement, and will not be completely restricted, so as to meet the rotation angle requirements of the friction pendulum seismic isolation ball bearing 2 and ensure the overall stability.

[0056] In some embodiments, the first sliding plate 221 and the second sliding plate 241 are both made of mirror stainless steel, and the first friction plate 222 and the second friction plate 242 are both made of polytetrafluoroethylene, ultra-high molecular weight polyethylene or polyoxymethylene. As an example, the material of the first friction plate 222 and the second friction plate 242 is selected according to the design requirements of the actual friction coefficient.

[0057] In some embodiments, the top surface of the spherical cap 23 is a second convex spherical surface protruding toward the upper seat plate 21, and the bottom surface of the upper seat plate 21 is a second concave spherical surface matching the second convex spherical surface. As an example, the spherical radius of the second convex spherical surface is smaller than the spherical radius of the first convex spherical surface.

[0058] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A friction pendulum seismic isolation spherical bearing, used to be arranged between the beam and the pier of a bridge, characterized in that: It includes an upper seat plate, a first friction pair, a spherical crown, a second friction pair and a lower seat plate which are arranged in sequence from top to bottom, the bottom surface of the spherical crown is a first convex spherical surface protruding toward the lower seat plate, the top surface of the lower seat plate is a first concave spherical surface matching with the first convex spherical surface, the second friction pair is provided with a through hole, the top surface of the lower seat plate is provided with a first limiting piece, the bottom surface of the spherical crown is provided with a second limiting piece, the first limiting piece or the second limiting piece passes through the through hole and matches to limit the rotational displacement between the spherical crown and the lower seat plate.

2. The friction pendulum seismic isolation spherical bearing according to claim 1 is characterized in that: The first limiting member is a limiting groove, and the second limiting member is a limiting column; Alternatively, the first limiting member is a limiting column, and the second limiting member is a limiting groove.

3. The friction pendulum seismic isolation spherical bearing according to claim 2 is characterized in that: The circumferential distance from the inner wall of the limiting groove to the cylindrical surface of the limiting column is A, where A=the spherical radius of the first convex spherical surface×the rotation angle of the spherical cap, and the rotation angle of the spherical cap is 0.02-0.06Rad.

4. The friction pendulum seismic isolation spherical bearing according to any one of claims 1 to 3, characterized in that: The friction pendulum seismic isolation spherical bearing also includes a connecting component, which includes a shear column, one end of which is fixedly connected to the upper seat plate, and the other end is fixedly connected to the lower seat plate, and a shear weakening surface is arranged on the shear column between the upper seat plate and the lower seat plate.

5. The friction pendulum seismic isolation spherical bearing according to claim 4 is characterized in that: The upper seat plate is connected to a plurality of the connection components on both sides of the first direction of the road surface width, and the plurality of the connection components on each side are arranged at intervals along the second direction of the road surface length.

6. The friction pendulum vibration isolation spherical bearing according to claim 4, characterized in that: A plurality of the connecting assemblies are evenly spaced apart in the circumferential direction of the upper seat plate.

7. The friction pendulum vibration isolation spherical bearing according to claim 4, characterized in that: The connecting assembly also includes a connecting seat, which includes a transverse plate and a vertical plate connected to each other, the end of the transverse plate away from the vertical plate is connected to the lower seat plate, the end of the vertical plate away from the transverse plate is provided with a first countersunk hole, and the bottom surface of the upper seat plate is provided with a second countersunk hole, one end of the shear column is embedded and connected in the first countersunk hole, and the other end of the shear column is embedded and connected in the second countersunk hole, and the shear weakening surface is located at the connection between the upper seat plate and the vertical plate.

8. The friction pendulum vibration isolation spherical bearing according to claim 4, characterized in that: The shear weakening surface is an annular weakening surface, and the circumference of the shear weakening surface is uniformly recessed toward the inside of the shear column.

9. The friction pendulum seismic isolation spherical bearing according to any one of claims 1 to 3, characterized in that: The first friction pair comprises a first sliding plate and a first friction plate, wherein the first sliding plate is fixed to the bottom surface of the upper seat plate, and the first friction plate is embedded and fixed to the top surface of the ball crown; The second friction pair comprises a second sliding plate and a second friction plate, wherein the second sliding plate is fixed to the bottom surface of the ball crown, the second friction plate is embedded and fixed to the top surface of the lower seat plate, and the second friction plate is provided with the through hole.

10. A road bridge structure, characterized in that: It comprises a road surface, a beam, a bridge pier and a friction pendulum seismic isolation spherical bearing as described in any one of claims 1 to 9, wherein the beam is fixed to the bottom surface of the road surface along a first direction, and at least one of the friction pendulum seismic isolation spherical bearings is arranged between the beam and the bridge pier.

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