A damping bearing for a bridge and a bridge

Abstract

The embodiments of the present application provide a damping bearing for a bridge and a bridge, relating to the technical field of bridge engineering. The bearing includes a bottom plate, a guide rod, a bearing body, and a flexible damping member. Among them, the flexible damping member is connected to the bottom plate and is movably connected to the bearing body. In the first state, when the bearing body moves, it does not drive the flexible damping member to deform, and the flexible damping member thus remains stationary; in the second state, the bearing body can drive the flexible damping member to deform, thereby dissipating the kinetic energy of the bridge structure. The present application realizes hierarchical energy dissipation and shock absorption through the different movement conditions of the flexible damping member in the two states. At the same time, the flexible damping member only functions in the second state, effectively reducing the usage times of the flexible damping member, extending its service life, and saving costs.

Description

Technical Field

[0001] This application relates to the technical field of bridge engineering, and particularly to a damping bearing for bridges. Background Art

[0002] In the technical field of bridge engineering, a bearing is an important component connecting the upper structure and the lower structure of a bridge, located between the beam body and the bridge pier. Among them, the upper structure is generally the beam body, and the lower structure is generally the bridge pier. The bearing can reliably transfer the load and deformation borne by the upper structure of the bridge to the lower structure of the bridge, and is an important force transmission device for the bridge.

[0003] Due to the force transmission of the bearing, the bearing can reduce the damage of earthquakes to bridges. Related bearings use damping components to consume seismic energy to achieve the purpose of seismic reduction, but the damping components are prone to fatigue damage and need to be replaced regularly. Summary of the Invention

[0004] In view of this, the embodiments of this application provide a damping bearing for bridges to solve the problems that the damping components are prone to fatigue damage and have a short service life.

[0005] The technical solution of this application is implemented as follows:

[0006] The embodiments of this application provide a damping bearing for bridges, including a bottom plate; a guide rod disposed above the bottom plate and extending along a first direction, the guide rod having a first state in which the relative displacement between the guide rod and the bottom plate in the first direction is less than or equal to a first preset value and a second state in which the relative displacement between the guide rod and the bottom plate in the first direction is greater than the first preset value; a bearing body disposed around the guide rod and slidable relative to the guide rod along the first direction; a flexible damping member connected to the bottom plate and movably connected to the bearing body; wherein, in the first state, the flexible damping member remains stationary; in the second state, the flexible damping member is deformed by the bearing body.

[0007] Further, a reset member is disposed between the bearing body and the guide rod; in the first state, when the bearing body slides relative to the guide rod and deviates from the initial position, the reset member generates a force for resetting the bearing body to the initial position.

[0008] Further, the reset member includes: a force transmission member fixedly connected to the guide rod; an elastic member, one end of the elastic member is connected to the force transmission member, and the other end of the elastic member contacts the bearing body.

[0009] Further, the flexible damping member includes: a body; a first connecting arm protruding from the body and connected to the bottom plate; a second connecting arm protruding from the body and movably connected to the support body; wherein, there is a spaced space between the first connecting arm and the second connecting arm.

[0010] Further, one of the second connecting arm and the support body is provided with a through hole extending in the first direction, and the other is fixed with a connecting member for passing through the through hole, and the length of the through hole is greater than the length of the connecting member in the first direction; wherein, when the displacement of the support body sliding relative to the guide rod is equal to a first preset value, the connecting member is located at one end of the through hole in the first direction.

[0011] Further, the length direction of the body is along the first direction, and the included angle between the length directions of the first connecting arm and the second connecting arm and the first direction is greater than a preset angle.

[0012] Further, the support further includes a limiting member fixedly connected to the bottom plate, and the limiting member is used to limit the relative displacement between the guide rod and the bottom plate in the first direction; in a state where the relative displacement is greater than the first preset value, the limiting member releases the limit.

[0013] Further, the limiting member includes: a housing having a channel extending in the first direction inside, and the guide rod extends into the channel; a blocking member disposed in the channel and fixedly connected to the housing to block the movement of the guide rod in the first direction; wherein, the state of the force limit value of the blocking member is the state where the relative displacement is equal to the first preset value.

[0014] Further, there is a gap between the bottom surface of the support body and the bottom plate.

[0015] An embodiment of the present application further provides a bridge, including: a damping bearing as described in any one of the above; a bridge pier fixedly connected to the bottom plate; a beam body; wherein, the bearing is located between the bridge pier and the beam body.

[0016] The damping bearing provided by the embodiment of the present application includes a bottom plate, a guide rod, a bearing main body, and a flexible damping member. Among them, the flexible damping member is connected to the bottom plate and is movably connected to the bearing main body. In the first state, the bearing main body is in a static state or the displacement of moving along the guide rod is within the range where the bearing main body moves relative to the flexible damping member, so that the bearing main body does not drive the flexible damping member to move when it moves, and the flexible damping member thus remains in a static state; in the second state, the displacement of the bearing main body moving along the guide rod is greater than the range where the bearing main body moves relative to the flexible damping member, so that the bearing main body can drive the flexible damping member to move, and the flexible damping member thus undergoes compression or tensile deformation, dissipating the kinetic energy of the bearing main body and gradually reducing the moving displacement of the bearing main body. Through the different movement conditions of the flexible damping member in the two states, hierarchical energy dissipation and shock absorption are achieved. At the same time, the flexible damping member only functions in the second state, effectively reducing the usage times of the flexible damping member, extending its service life, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Partial sectional view of a damping bearing provided by an embodiment of the present application;

[0018] Figure 2 Provided by an embodiment of the present application Figure 1 Top view in;

[0019] Figure 3 Provided by an embodiment of the present application Figure 1 Enlarged view of A in;

[0020] Figure 4 Partial sectional view of a reset member provided by an embodiment of the present application;

[0021] Figure 5 Another partial sectional view of a reset member provided by an embodiment of the present application;

[0022] Figure 6 Structural diagram of a flexible damping member provided by an embodiment of the present application;

[0023] Figure 7 Provided by an embodiment of the present application Figure 2 Enlarged view of B in;

[0024] Figure 8 Partial sectional view of a limiting member provided by an embodiment of the present application;

[0025] Figure 9 Another partial sectional view of a limiting member provided by an embodiment of the present application;

[0026] Figure 10 Structural diagram of a bridge provided by an embodiment of the present application.

[0027] Description of the Reference Numerals of the Drawings:

[0028] 10 - bottom plate; 11 - sliding groove; 12 - fixing member; 121 - second through - hole; 20 - support body; 21 - upper support plate; 22 - slider; 23 - lower support plate; 231 - guide rail; 24 - sliding cavity; 25 - arm rod; 251 - engaging groove; 252 - through - hole; 26 - sliding groove; 30 - guide rod; 40 - flexible damping member; 41 - first through - hole; 42 - body; 43 - first connecting arm; 44 - second connecting arm; 441 - connecting member; 50 - reset member; 51 - force - transmitting member; 52 - elastic member; 60 - limiting member; 61 - housing; 611 - channel; 612 - friction member; 62 - blocking member; 70 - bridge pier; 80 - beam body. Detailed Embodiments

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] For each of the specific technical features in each of the embodiments described in the detailed embodiments, various combinations can be made without conflict. For example, different embodiments can be formed by combining different specific technical features. To avoid unnecessary repetition, various possible combination methods of each specific technical feature in the present application will not be described separately.

[0031] In the following description, the terms "first / second / ..." only distinguish different objects and do not indicate that there are any same or related relationships between the objects. It should be understood that the orientation descriptions "above", "below", "upper", and "lower" are all in the orientation in the normal use state.

[0032] It should be noted that the term "comprising", "including" or any other variation thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. The term "connection" includes both direct connection and indirect connection unless otherwise specified.

[0033] The present application provides a bearing for a bridge, which is a force - transmitting device for supporting a beam body, including a pot - type rubber bearing, a spherical bearing, a steel bearing, a spherical steel bearing, etc. It should be noted that the present application does not limit the type of the bearing.

[0034] Taking the spherical steel bearing as an example, the composition structure and working principle of the bearing will be roughly described as follows. As Figure 1 shown, the bearing may include a bottom plate 10 and a bearing body 20. Among them, the bearing body 20 includes an upper bearing plate 21, a slider 22, and a lower bearing plate 23. A sliding cavity 24 is formed between the upper bearing plate 21 and the lower bearing plate 23. The slider 22 is placed in the sliding cavity 24 and can slide in the sliding cavity 24. At least one of the surface of the upper bearing plate 21 close to the sliding cavity 24 and the surface of the lower bearing plate 23 close to the sliding cavity 24 is an arc surface. The surface of the slider 22 in contact with the arc surface is also correspondingly set to a matching arc surface so that the slider can slide in the sliding cavity 24. Further, friction pairs may be provided between the slider 22 and the upper bearing plate 21 and between the slider 22 and the lower bearing plate 23 to reduce the wear of the slider 22, the upper bearing plate 21, and the lower bearing plate 23. The lower bearing plate 23 is connected to the bottom plate 10 and can move relative to the bottom plate 10. A chute 11 is provided on the bottom plate 10, and a guide rail 231 is correspondingly provided on the lower bearing plate 23. The guide rail 231 moves along the chute 11. Optionally, a friction pair is provided between the chute 11 and the guide rail 231, and a friction pair is also provided between the lower bearing plate 23 and the bottom plate 10 to reduce the wear between the lower bearing plate 23, the bottom plate 10, and the guide rail 231. It should be noted that a friction pair is a device or object that contacts between two components and generates frictional movement. For example, the friction pair may be a wear-resistant plate made of thermoplastic polyester material.

[0035] When the upper bearing plate 21 vibrates, sliding occurs between the upper bearing plate 21 and the slider 22. Through the sliding friction of the slider 22 in the sliding cavity 24, part of the vibration energy is consumed, so that the vibration energy transmitted from the upper bearing plate 21 to the lower bearing plate 23 is reduced, and further the movement displacement of the lower bearing plate 23 relative to the bottom plate 10 is reduced.

[0036] As Figure 2 shown, the bearing further includes a guide rod 30 and a flexible damper 40. Among them, the bottom plate 10 is in a flat plate shape and is used to place the bearing body 20. The guide rod 30 is arranged above the bottom plate and extends along the first direction. It should be noted that the first direction refers to the direction in which the guide rod 30 extends in length (such as Figure 2 shown in the left-right direction). Specifically, the guide rod 30 is in a long rod shape, and its cross-section can be circular, or square, rectangular or other shapes. The guide rod 30 can be arranged on the bottom plate 10 without a gap therebetween. In another embodiment, the guide rod 30 may also be arranged at an interval from the bottom plate 10 to reduce the friction between the guide rod 30 and the bottom plate 10. It should be noted that the interval arrangement means that the two components do not contact but leave a gap. The guide rod 30 has the same first direction as the bottom plate 10 (such as Figure 2a first state in which the relative displacement in the left - right direction (as shown) is less than or equal to a first preset value and a second state in which the relative displacement in the first direction (such as the left - right direction as shown) with respect to the bottom plate 10 is greater than the first preset value. It should be noted that the first preset value is determined according to the actual situation. Specifically, the guide rod 30 can reciprocate relative to the bottom plate 10 along the length direction of the guide rod 30, and the displacement of the reciprocating movement of the guide rod 30 in the first state is less than its movement displacement in the second state. The first state and the second state can be two states of the guide rod determined by the external environment. For example, the first state is the state of the deformation of the bridge due to the temperature effect. It should be noted that the temperature effect refers to the situation where the bridge expands when heated and contracts when cooled. In this state, the displacement of the movement of the guide rod 30 is small. The second state is the state of an earthquake. In this state, the displacement of the guide rod 30 is large. Figure 2 a second state in which the relative displacement in the left - right direction (as shown) with respect to the bottom plate 10 is greater than the first preset value. It should be noted that the first preset value is determined according to the actual situation. Specifically, the guide rod 30 can reciprocate relative to the bottom plate 10 along the length direction of the guide rod 30, and the displacement of the reciprocating movement of the guide rod 30 in the first state is less than its movement displacement in the second state. The first state and the second state can be two states of the guide rod determined by the external environment. For example, the first state is the state of the deformation of the bridge due to the temperature effect. It should be noted that the temperature effect refers to the situation where the bridge expands when heated and contracts when cooled. In this state, the displacement of the movement of the guide rod 30 is small. The second state is the state of an earthquake. In this state, the displacement of the guide rod 30 is large.

[0037] such as Figure 2 As shown, the support body 20 is arranged around the guide rod 30 and can slide relative to the guide rod 30 in the first direction (such as the left - right direction as shown). Specifically, on the support body 20, there is an arm rod 25 perpendicular to the length direction of the guide rod 30 (such as the up - down direction as shown). In the arm rod 25, there is a clamping groove 251 extending along the length direction of the guide rod (such as the left - right direction as shown). The size of the clamping groove 251 is at least equal to the cross - sectional size of the guide rod 30. The guide rod 30 penetrates through the clamping groove 251 so that the support body 20 can slide back and forth along the guide rod 30. Figure 2 As shown, the support body 20 is arranged around the guide rod 30 and can slide relative to the guide rod 30 in the first direction (such as the left - right direction as shown). Specifically, on the support body 20, there is an arm rod 25 perpendicular to the length direction of the guide rod 30 (such as the up - down direction as shown). In the arm rod 25, there is a clamping groove 251 extending along the length direction of the guide rod (such as the left - right direction as shown). The size of the clamping groove 251 is at least equal to the cross - sectional size of the guide rod 30. The guide rod 30 penetrates through the clamping groove 251 so that the support body 20 can slide back and forth along the guide rod 30. Figure 2 As shown, the support body 20 is arranged around the guide rod 30 and can slide relative to the guide rod 30 in the first direction (such as the left - right direction as shown). Specifically, on the support body 20, there is an arm rod 25 perpendicular to the length direction of the guide rod 30 (such as the up - down direction as shown). In the arm rod 25, there is a clamping groove 251 extending along the length direction of the guide rod (such as the left - right direction as shown). The size of the clamping groove 251 is at least equal to the cross - sectional size of the guide rod 30. The guide rod 30 penetrates through the clamping groove 251 so that the support body 20 can slide back and forth along the guide rod 30. Figure 2 As shown, the support body 20 is arranged around the guide rod 30 and can slide relative to the guide rod 30 in the first direction (such as the left - right direction as shown). Specifically, on the support body 20, there is an arm rod 25 perpendicular to the length direction of the guide rod 30 (such as the up - down direction as shown). In the arm rod 25, there is a clamping groove 251 extending along the length direction of the guide rod (such as the left - right direction as shown). The size of the clamping groove 251 is at least equal to the cross - sectional size of the guide rod 30. The guide rod 30 penetrates through the clamping groove 251 so that the support body 20 can slide back and forth along the guide rod 30.

[0038] such as Figure 2 As shown, the flexible damping member 40 is connected to the bottom plate 10 and is movably connected to the support body 20. It should be noted that the flexible damping member 40 is a device that provides damping force by deforming and dissipates the movement energy. The movable connection means that the two components can move relative to each other while being connected. Specifically, the flexible damping member 40 can be fixedly connected to the bottom plate 10. In another embodiment, the flexible damping member 40 can also be rotatably connected to the bottom plate. For example, as Figure 3 As shown, the flexible damping member 40 is provided with a circular through - hole 41, and the bottom plate 10 is provided with a fixing member 12. The fixing member 12 is also provided with a second through - hole 121 having the same size as the first through - hole 41. A cylindrical pin sequentially penetrates through the second through - hole 121 and the first through - hole 41 to connect the fixing member 12 and the flexible damping member 40. The flexible damping member 40 can rotate around the cylindrical pin. The flexible damping member 40 is also movably connected to the support body 20. For example, one end of the flexible damping member 40 can be connected to the bottom plate 10, and the other end is movably connected to the movable support. The way of this movable connection can be a sliding connection. For example, the flexible damping member 40 is provided with a sliding protrusion, and the support body 20 is provided with a direction along the length of the slide bar (such asFigure 2 A slideway in the left - right direction (as shown) allows the sliding protrusion to slide within the slideway, thereby achieving the movable connection between the support body 20 and the flexible damping member 40. Within the movable connection range, the support body 20 can move relative to the flexible damping member 40. When the movement displacement of the support body 20 is greater than the range of this movable connection, the support body 20 can drive the flexible damping member 40 to move. Since the flexible damping member 40 is connected to the bottom plate 10, the flexible damping member 40 will be squeezed or stretched and deformed, thereby dissipating the movement energy of the support body 20 and gradually reducing the movement displacement of the support body 20.

[0039] As Figure 2 shown, in the first state, the flexible damping member 40 remains stationary; in the second state, the flexible damping member 40 is driven by the support body 20 to deform. Specifically, in the first state, the support body 20 is in a stationary state or moves with a small displacement along the guide rod 30, and the movement displacement of the support body 20 is less than or equal to the maximum movement displacement of the support body 20 relative to the flexible damping member 40. Therefore, the movement of the support body 20 cannot drive the flexible damping member 40 to move. In the second state, the support body 20 moves with a large displacement along the guide rod, and its movement displacement is greater than the maximum movement displacement of the support body 20 relative to the flexible damping member 40. Thus, the support body 20 will drive the flexible damping member 40 to be squeezed or stretched and deformed, causing the flexible damping member 40 to dissipate the movement energy of the support body 20.

[0040] The support provided by the embodiment of the present application includes a bottom plate, a guide rod, a support body, and a flexible damping member. Among them, the flexible damping member is connected to the bottom plate and movably connected to the support body. In the first state, the support body is in a stationary state or the displacement of moving along the guide rod is within the range of the support body's relative movement with respect to the flexible damping member, so that the support body does not drive the flexible damping member to move when it moves, and the flexible damping member thus remains stationary; in the second state, the displacement of the support body moving along the guide rod is greater than the range of the support body's relative movement with respect to the flexible damping member, so that the support body can drive the flexible damping member to move, and the flexible damping member thus undergoes squeezing or stretching deformation, dissipating the movement energy of the support body and gradually reducing the movement displacement of the support body. The embodiment of the present application achieves hierarchical energy - dissipation and shock - absorption through the different movement conditions of the flexible damping member in two states. At the same time, the flexible damping member only functions in the second state, effectively reducing the usage times of the flexible damping member, extending its service life, and saving costs.

[0041] In some embodiments, as Figure 4As shown, a reset member 50 is provided between the support body 20 and the guide rod 30; in the first state, when the support body 20 slides relative to the guide rod 30 and deviates from the initial position, the reset member 50 generates a force for returning the support body 20 to the initial position. It should be noted that the initial position refers to the position where the support body 20 is located in the stationary state. Specifically, one end of the reset member 50 contacts the support body 20, and the opposite end of the reset member 50 is fixedly connected to the guide rod 30. For example, the reset member 50 is a reset spring, which has opposite ends, one end of which is fixedly connected to the support body 20, and the other end is fixedly connected to the guide rod 30. In the first state, when the support body 20 is stationary relative to the guide rod 30, the reset spring is in an unloaded state; when the support body 20 moves relative to the guide rod 30, the reset spring is stretched, generating a force to return the support body 20 to the initial position and overcoming the movement of the support body 20 relative to the guide rod 30.

[0042] By providing a reset member between the support body and the guide rod, when the support body deviates from the initial position relative to the guide rod, a force is provided to return the support body to the initial position, so as to overcome the movement of the support body deviating from the initial position, thereby avoiding the misalignment of the support body and the bridge during use and affecting the support of the bridge by the support.

[0043] In some embodiments, as Figure 5 shown, the reset member 50 includes: a force transmission member 51 and an elastic member 52. Among them, the force transmission member 51 is fixedly connected to the guide rod 30. Specifically, the force transmission member 51 can be circular, and the guide rod 30 passes through the circular force transmission member 51 so that the force transmission member 51 is fixed on the guide rod 30. Threads can be provided on the guide member 30, and matching threads are also provided on the force transmission member 51. Through thread cooperation, the force transmission member 51 is tightened on the guide rod 30. One end of the elastic member 52 is connected to the force transmission member 51, and the other end of the elastic member 52 contacts the support body 20. Specifically, the elastic member 52 is arranged between the force transmission member 51 and the support body 20, and the elastic member 52 is arranged around the guide rod 30. When the support body 20 slides along the guide rod 30, it will jointly squeeze the elastic member 52 with the force transmission member 51, causing the elastic member 52 to generate a force opposite to the squeezing direction of the support body 20, preventing the movement of the support body 20 until the support body 20 returns to the initial position. Optionally, two elastic members 52 on the same guide rod 30 can be provided, and the two elastic members 52 are symmetrically arranged relative to the support body 20 so that when the support body 20 reciprocates along the guide rod 30, a force can be provided to return the support body 20 to the initial position.

[0044] It is fixedly connected to the guide rod through a force transmission member, so that when the support body moves, the support body and the force transmission member jointly compress the elastic member, thereby generating a force to prevent the support body from moving, so that the support body returns to the initial position. The elastic member is more likely to be damaged in the stretched state than in the compressed state. The method of compressing the elastic member is adopted to prevent the support body from moving, avoiding damaging the elastic member.

[0045] In some embodiments, such as Figure 6 shown, the flexible damping member 40 includes: a body 42, a first connecting arm 43, a second connecting arm 44. The first connecting arm 43 protrudes from the body 42 and is connected to the bottom plate 10, and the second connecting arm 44 protrudes from the body and is movably connected to the support body 20; there is a spaced space between the first connecting arm 43 and the second connecting arm 44. It should be noted that the spaced space means that there is a distance between two components, that is, there is a distance between the first connecting arm 43 and the second connecting arm 44. Specifically, the body 42 can be strip-shaped, and the first connecting arm 43 and the second connecting arm 44 can be arranged at opposite ends of the body 42. The first connecting arm 43 can be rotatably connected to the support body 20. In the second state, the support body 20 drives the second connecting arm 44 to move, and the second connecting arm 44 drives the body 42 to move, and the body 42 drives the first connecting arm 43 to rotate. It should be noted that the first connecting arm 43 can rotate a certain angle around the connection point connected to the bottom plate 10, for buffering the sudden force on the flexible damping member 40 and avoiding damage to the flexible damping member 40. After the first connecting arm 43 completes the rotational movement, the support body 20 still drives the second connecting arm 44 to move, so that the second connecting arm 44 and the body 42 and between the body 42 and the first connecting arm 43 are mutually compressed or stretched, thereby realizing the deformation and energy absorption of the flexible damping member 40. Optionally, a plurality of first connecting arms 43 can be provided. The plurality of first connecting arms 43 are respectively connected to the bottom plate 10, and the plurality of first connecting arms 43 are all spaced from the second connecting arm 44, thereby further providing the energy absorption capacity of the flexible damping member 40. For example, the second connecting arm 43 can be provided as two, and the two second connecting arms 43 are symmetrically arranged on the body 42 with the second connecting portion 44 as the axis of symmetry. When the support body 20 drives the second connecting arm 44 to move, it will compress one section of the body 42 and stretch the other section of the body 42 at the same time, so as to provide double resistance to prevent the support body 10 from moving and improve the ability of the flexible damping to absorb energy.

[0046] The first connecting arm, the second connecting arm and the body are respectively connected to the bottom plate and the support body, and there is a spaced space between the first connecting arm and the second connecting arm, so as to increase the deformation amount of the flexible damping member, thereby increasing the energy absorption capacity of the flexible damping member.

[0047] In some embodiments, such as Figure 7 shown, one of the second connecting arm 44 and the support body 20 is provided with a length along the first direction (such asFigure 7 a through hole 252 in the left - right direction (as shown) is provided, and the other is fixed with a connecting member 441 for passing through the through hole 252. The length of the through hole 252 is greater than the length of the connecting member 441 in the first direction (the left - right direction as shown). Specifically, the through hole 252 is oblong, and the two ends in the length direction of the through hole 252 are arc - shaped so that the connecting member 441 can slide in the through hole 252. The connecting member 44 is strip - shaped, and its length direction is perpendicular to the length direction of the through hole 252. The cross - sectional area of the part of the connecting member 44 that slides in the through hole 252 is less than or equal to the spacing of the through hole 252 so that the connecting member 441 can slide more smoothly in the through hole 252. It should be noted that the spacing of the through holes refers to the distance of the through hole 252 in the direction perpendicular to the length direction of the through hole 252. The through hole 252 and the connecting member 441 are respectively arranged on the second connecting arm 44 and the support body 20, that is, when the through hole 252 is arranged on the support body 20, the connecting member 441 is arranged on the second connecting arm 44, or when the through hole 252 is arranged on the second connecting arm 44, the connecting member 441 is arranged on the support body 20. Among them, the displacement of the support body 20 sliding relative to the guide rod 30 is equal to the first preset value, and the connecting member 441 is located at one end of the through hole 252 in the first direction (such as Figure 7 the left - right direction as shown). Specifically, the support body 20 and the flexible damping member 40 are movably connected through the through hole 252 and the connecting member 441. When the support body 20 moves, when the connecting member 44 moves from its initial position to one end of the through hole 252 in its length direction, it is the maximum displacement that the support body 20 and the flexible damping member 40 can move relative to each other. When the support body 20 continues to move, the support body 20 will drive the flexible damping member 40 to move. Therefore, the maximum relative displacement between the support body 20 and the flexible damping member 40 is the first preset value. For example, when the flexible damping member 40 is symmetrically arranged relative to the support body 20, the through hole 252 is also symmetric relative to the support body 20, that is, the initial position of the connecting member 441 is located in the middle of the through hole 252. At this time, the distances from the connecting member 441 to the two ends in the length direction of the through hole 252 are the same. At this time, the first preset value is half of the length of the through hole 252 in the length direction (such as Figure 7 the left - right direction as shown).

[0048] By respectively arranging through holes and connecting members on the support body and the second connecting arm, the movable connection between the support body and the flexible damping member is realized. At the same time, by controlling the length of the through hole, it is also convenient to determine the size of the first preset value.

[0049] In some embodiments, as Figure 6 shown, the length direction of the body 42 is along the first direction (such as Figure 6 the left - right direction as shown), and the length directions of the first connecting arm 43 and the second connecting arm 44 are the same as the first direction (such as Figure 6The included angle between the length directions of the first connecting arm 43 and the second connecting arm 44 and the length direction of the main body 42 (such as the left-right direction shown) is greater than a preset angle. It should be noted that the preset angle is greater than 0° and less than 180°. Specifically, the length directions of the first connecting arm 43 and the second connecting arm 44 are not parallel to the length direction of the main body 42, so that the first connecting arm 43 and the second connecting arm 44 can be deformed by extrusion or stretching with the main body 42, increasing the deformation amount of the flexible damper 40. The included angle between the length direction of the first connecting arm 43 and the first direction of the main body 42 (such as Figure 6 the left-right direction shown) is the same as or different from the included angle between the length direction of the second connecting arm 44 and the first direction of the main body 42 (such as Figure 6 the left-right direction shown). For example, the included angle between the length direction of the first connecting arm 43 and the first direction of the main body 42 (such as Figure 6 the left-right direction shown) is 60°, and the included angle between the length direction of the second connecting arm 44 and the first direction of the main body 42 (such as Figure 6 the left-right direction shown) is 90°.

[0050] By setting an included angle between the length directions of the first connecting arm and the second connecting arm and the length direction of the main body (such as Figure 7 the left-right direction shown), the length directions of the first connecting arm and the second connecting arm are not parallel to the length direction of the main body, so that the second connecting arm and the main body, and the main body and the first connecting arm are deformed by extrusion or stretching with each other, increasing the deformation amount of the flexible damper, and further enhancing the shock absorption and energy dissipation ability of the flexible damper.

[0051] In some embodiments, as Figure 8 shown, the support 1 further includes a limiting member 60 fixedly connected to the bottom plate 10. The limiting member 60 is used to limit the relative displacement between the guide rod 30 and the bottom plate 10 in the first direction (such as Figure 8 the left-right direction shown). Specifically, while the limiting member 60 is fixedly connected to the bottom plate 10, it is also connected to the guide rod 30. In the first state, the limiting member 60 limits the displacement of the guide rod 30 in the first direction, that is, the length direction of the guide rod 30, so that the guide rod 30 is stationary or moves within a small range. Optionally, there are two limiting members 60, which are respectively connected to both ends in the length direction of the guide rod 30 to limit the displacement of the guide rod 30 in the first direction (such as Figure 8 the left-right direction shown). For example, the limiting members 60 and the ends of the guide rod 30 in the length direction are magnets with the same magnetism. In one state, due to the same magnetism, the limiting members 60 and the ends of the guide rod 30 generate repulsive forces to limit the guide rod 30 in the first direction (such as Figure 8When the relative displacement is greater than the first preset value, the limiter 60 contacts the limiter. Specifically, when the movement displacement of the guide rod 30 driven by the support body 20 is greater than the first preset value, the force provided by the support body 20 to the guide rod 30 is greater than the magnetic force between the guide rod 30 and the limiter 60, thereby driving the guide rod 30 in the first direction (as shown). Figure 8 The support 1 moves in the left and right directions as shown), contacts the limiting function of the limiting member 60, so that the support 1 enters the second state.

[0052] The limiting member limits the displacement of the guide rod relative to the base plate in the first state, and releases the limiting member of the guide rod in the second state, thereby facilitating the transition from the first state to the second state.

[0053] In some embodiments, as Figure 9 As shown, the limiting member 60 includes a shell 61 and a blocking member 62. The interior of the shell 61 has a first direction (such as Figure 9 The guide rod 30 extends into the channel 611. Specifically, the shell 61 can be a rectangular parallelepiped or a cube, etc. The shell 61 is fixed on the base plate 10. The channel 611 in the shell 61 can be along the first direction, that is, through the length direction of the guide rod 30. The end of the guide rod 30 in the length direction extends into the channel 611, and the guide rod 30 can slide in the channel 611 along the length direction of the guide rod 30. Optionally, a friction member 612 is provided at the contact point between the guide rod 30 and the channel 611 to reduce the friction loss between the guide rod 30 and the channel 611. The blocking member 62 is arranged in the channel 611 and is fixedly connected to the shell 61 to block the guide rod 30 from moving along the first direction (such as Figure 9 The blocking member 62 is arranged at a certain angle to the longitudinal direction of the channel 611, that is, the blocking member 62 is arranged parallel to the channel 611. The blocking member 62 is arranged in the channel 611 near the end of the guide member 30 to block the movement of the guide member 30 in its longitudinal direction. The force limit value state of the blocking member 62 is a state where the relative displacement is equal to the first preset value. It should be noted that the force limit value refers to the maximum value of the force that the blocking member 62 can withstand before breaking. Specifically, the blocking member 62 is a breakable element, such as a shear pin. When the force is too large, it will break, thereby losing its limiting effect. The transition from the first state to the second state is achieved by changing the limiting state of the guide rod 30. Therefore, when the force received by the guide rod 30 along the longitudinal direction is greater than the force limit value of the blocking member 62, the first state will be converted into the second state, that is, the first preset value is equal to the maximum value of the force that the blocking member 62 can withstand.

[0054] By setting a blocking member in the limiting member, the limiting effect on the guide rod is achieved. At the same time, due to the characteristic that the blocking member can break under a certain force, the limitation on the guide rod is released, so that the conversion from the first state to the second state can be realized.

[0055] In some embodiments, such as Figure 10 As shown, there is a gap between the bottom surface of the support body 20 and the bottom plate 10. It should be noted that the bottom surface of the support body 20 is an end surface of the support body 20 close to the bottom plate 10. Specifically, the support body 20 can move relative to the bottom plate 10 in the first direction (such as Figure 10 the left - right direction described), and the bottom surface of the support body 20 is parallel to the bottom plate 10. Optionally, there is a gap between the bottom surface of the support body 20 and the bottom plate 10, and balls are placed in this gap. Both the bottom surface of the support body 20 and the bottom plate 10 are provided with ball grooves arranged in the first direction, and the support body 20 slides on these balls, so as to realize the movement of the support body 20 relative to the bottom plate 10.

[0056] By setting a gap between the bottom surface of the support body and the bottom plate, the bottom surface of the support body and the bottom plate can slide relative to each other, reducing the friction between the bottom surface of the support body and the bottom plate.

[0057] Such as Figure 10 As shown, the embodiment of the present application also provides a bridge structure, including the support 1 involved in any of the above - mentioned embodiments, a bridge pier 70 and a beam body 80. Among them, the bridge pier 70 is fixedly connected to the bottom plate 10, and the support 1 is located between the bridge pier 70 and the beam body 80. Specifically, when using this support 1, the beam body 80 is located above the support 1, and the upper end surface of the support 1 is fixedly connected to the beam body. It should be noted that the upper end surface of the support 1 refers to an end surface of the support body 20 far from the bottom plate 10. The bridge pier 70 is fixedly connected to the bottom plate 10, so that the support 1 is located between the bridge pier 70 and the beam body 80, so that the support 1 stands on the bridge pier 70 to support the beam body 80.

[0058] By using this support to support the beam body, when in the first state, for example, when a vehicle passes on the beam body 80 and causes vibration, the support body 20 is driven to vibrate. Under the action of the reset member 50, the vibration energy in this case is consumed, and thus the stability of the beam body 80 is maintained; when in the second state, for example, in the case of an earthquake, the support body 20 drives the guide rod 30 to move. At this time, the reset member 50 cannot reset the support body 20, so the flexible damping member 40 is driven to move, and then the vibration energy is consumed, reducing the damage to the bridge caused by the earthquake.

[0059] The above - mentioned is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A damping bearing for a bridge, characterized in that, The damping bearing is a spherical steel bearing, and the damping bearing comprises: base plate; a guide rod, disposed above the base plate and extending along a first direction, the first direction being the length direction of the bridge, the guide rod having a first state in which a relative displacement with respect to the base plate in the first direction is less than or equal to a first preset value, and a second state in which a relative displacement with respect to the base plate in the first direction is greater than the first preset value; a support body, disposed around the guide rod and capable of sliding relative to the guide rod along the first direction; A flexible damping member connected to the base plate and movably connected to the support body; Wherein, in the first state, the flexible damping member remains stationary; in the second state, the flexible damping member is driven by the support body to deform.

2. The damping bearing according to claim 1, characterized in that, A reset member is provided between the support body and the guide rod; in the first state, when the support body slides relative to the guide rod and deviates from the initial position, the reset member generates a force for restoring the support body to the initial position.

3. The damping bearing according to claim 2, wherein The reset element comprises: A force transmission member, fixedly connected to the guide rod; An elastic member, one end of which is connected to the force transmission member, and the other end of which is in contact with the support body.

4. The damping bearing according to claim 1, characterized in that, The flexible damping member comprises: ontology; a first connecting arm, protruding from the body and connected to the bottom plate; a second connecting arm, protruding from the main body and movably connected to the support body; Wherein, there is a spacing space between the first connecting arm and the second connecting arm.

5. The damping support according to claim 4, characterized in that: One of the second connecting arm and the support body is provided with a through hole extending in the first direction, and the other is fixed with a connecting piece for passing through the through hole, wherein the length of the through hole is greater than the length of the connecting piece in the first direction; Wherein, when the sliding displacement of the support body relative to the guide rod is equal to a first preset value, the connecting member is located at one end of the through hole in the first direction.

6. The damping bearing according to claim 4, wherein, The length direction of the body is along the first direction, and an angle between the length direction of the first connecting arm and the second connecting arm and the first direction is greater than a preset angle.

7. The damping support according to claim 1, wherein: The support further includes a limiting member fixedly connected to the base plate, wherein the limiting member is used to limit the relative displacement between the guide rod and the base plate in the first direction; when the relative displacement is greater than the first preset value, the limiting member releases the limit.

8. The damping support according to claim 7, characterized in that: The limiting member includes: a housing having a passage extending in the first direction, wherein the guide rod extends into the passage; a blocking member, disposed in the channel and fixedly connected to the housing, to block movement of the guide rod along the first direction; The state of the force limit value of the blocking member is a state where the relative displacement is equal to the first preset value.

9. The damping support according to claim 1, wherein: There is a gap between the bottom surface of the support body and the bottom plate.

10. A bridge, characterized in that, include: The damping bearing according to any one of claims 1 to 9; A bridge pier, fixedly connected to the base plate; beam body; Wherein, the support is located between the pier and the beam body.

Images