CN215857182U - Damping support for bridge and bridge - Google Patents

Abstract

The embodiment of the application provides a damping support for a bridge and the bridge, and relates to the technical field of bridge engineering. The support comprises a bottom plate, a guide rod, a support main body and a flexible damping piece, wherein the flexible damping piece is connected with the bottom plate and movably connected with the support main body; in the second state, the support main body can drive the flexible damping piece to deform, so that the movement energy of the bridge structure is reduced. This application realizes hierarchical power consumption shock attenuation through the different motion condition of flexible damping spare under two kinds of states, and simultaneously, flexible damping spare only plays under the second kind state, and the effectual use number of times that reduces flexible damping spare has prolonged it and has used for a long time, has saved the cost.

Description

Damping support for bridge and bridge

Technical Field

The application relates to the technical field of bridge engineering, in particular to a damping support for a bridge.

Background

In the technical field of bridge engineering, a support is an important part for connecting an upper structure and a lower structure of a bridge and is positioned between a beam body and a pier. The upper structure is generally a beam body, the lower structure is generally a pier, and the support can reliably transfer load and deformation borne by the upper structure of the bridge to the lower structure of the bridge, so that the support is an important force transfer device of the bridge.

Due to the force transmission performance of the support, the support can reduce the damage of an earthquake to the bridge. The related support adopts damping piece consumption seismic energy, reaches the purpose of shock attenuation, but damping piece takes place fatigue damage easily, needs the periodic replacement.

Disclosure of Invention

In view of this, the embodiment of the present application provides a damping support for a bridge, so as to solve the problem that a damping member is easily damaged by fatigue and has a short service life.

The technical scheme of the application is realized as follows:

the embodiment of the application provides a damping support for a bridge, which comprises a bottom plate; the guide rod is arranged above the bottom plate and extends along a first direction, and the guide rod has a first state that the relative displacement of the guide rod and the bottom plate in the first direction is smaller than or equal to a first preset value and a second state that the relative displacement of the guide rod and the bottom plate in the first direction is larger than the first preset value; the support body is arranged around the guide rod and can slide along the first direction relative to the guide rod; the flexible damping part is connected with the bottom plate and movably connected with the support main body; wherein in the first state the flexible damping member remains stationary; in the second state, the flexible damping part is driven by the support main body to deform.

Furthermore, a reset piece is arranged between the support main body and the guide rod; in the first state, in a case where the holder main body slides out of an initial position with respect to the guide bar, the reset piece generates a force for resetting the holder main body to the initial position.

Further, the reset piece includes: the force transmission piece is fixedly connected with the guide rod; one end of the elastic piece is connected with the force transmission piece, and the other end of the elastic piece is in contact with the support main body.

Further, the flexible damping member includes: a body; the first connecting arm protrudes out of the body and is connected with the bottom plate; the second connecting arm protrudes out of the body and is movably connected with the support main body; wherein a spacing space is provided between the first connecting arm and the second connecting arm.

Further, one of the second connecting arm and the support main body is provided with a through hole with the length extending along the first direction, and the other one is fixedly provided with a connecting piece used for penetrating through the through hole, and the length of the through hole is larger than that of the connecting piece in the first direction; and when the sliding displacement of the support main body relative to the guide rod is equal to a first preset value, the connecting piece is positioned at one end of the through hole in the first direction.

Further, the length direction of the body is along the first direction, and the included angle between the length direction of the first connecting arm and the second connecting arm and the first direction is larger than a preset angle.

Furthermore, the support further comprises a limiting member fixedly connected with the bottom plate, and the limiting member is used for limiting the relative displacement between the guide rod and the bottom plate in the first direction; and when the relative displacement is larger than the first preset value, the limiting piece releases the limiting.

Further, the stopper includes: the shell is internally provided with a channel extending in the first direction, and the guide rod extends into the channel; the blocking piece is arranged in the channel and fixedly connected with the shell so as to block the guide rod from moving along the first direction; wherein, the state of the force limit value of the blocking piece is the state that the relative displacement is equal to the first preset value.

Further, a gap is formed between the bottom surface of the support main body and the bottom plate.

The embodiment of the present application further provides a bridge, including: a damping mount as claimed in any one of the above claims; the bridge pier is fixedly connected with the bottom plate; a beam body; wherein, the support is located between the pier and the beam body.

The damping support comprises a bottom plate, a guide rod, a support main body and a flexible damping part, wherein the bottom plate of the flexible damping part is connected with the support main body in a movable mode; in the second state, the movement displacement of the support main body along the guide rod is larger than the movement range of the support main body relative to the flexible damping piece, so that the support main body can drive the flexible damping piece to move, the flexible damping piece is extruded or stretched to deform, the movement energy of the support main body is consumed, and the movement displacement of the support main body is gradually reduced. The different motion conditions of the flexible damping piece under two states realize hierarchical energy dissipation and shock absorption, and meanwhile, the flexible damping piece only plays a role under the second state, so that the use times of the flexible damping piece are effectively reduced, the use time is prolonged, and the cost is saved.

Drawings

FIG. 1 is a schematic partial cross-sectional view of a damping mount according to an embodiment of the present disclosure;

FIG. 2 is a top view of FIG. 1 provided in accordance with an embodiment of the present application;

FIG. 3 is an enlarged view of A in FIG. 1 provided by an embodiment of the present application;

fig. 4 is a schematic cross-sectional view of a restoring member according to an embodiment of the present application;

fig. 5 is a schematic cross-sectional view of another restoring member according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a flexible damping member according to an embodiment of the present disclosure;

FIG. 7 is an enlarged view of B in FIG. 2 according to an embodiment of the present disclosure;

fig. 8 is a schematic cross-sectional view of a position limiter according to an embodiment of the present disclosure;

fig. 9 is a schematic cross-sectional view of another limiting element according to an embodiment of the present disclosure;

fig. 10 is a schematic view of a bridge structure according to an embodiment of the present application.

Description of reference numerals:

10-a base plate; 11-a chute; 12-a fixing member; 121-a second via; 20-a holder body; 21-an upper support plate; 22-a slide block; 23-a lower support plate; 231-a guide rail; 24-a sliding cavity; 25-arm lever; 251-a clamping groove; 252-a via hole; 26-a chute; 30-a guide bar; 40-a flexible damping member; 41-a first through hole; 42-a body; 43-a first connecting arm; 44-a second connecting arm; 441-connecting piece; 50-a reset piece; 51-a force-transmitting member; 52-an elastic member; 60-a stop; 61-a housing; 611-a channel; 612-a friction member; 62-a barrier; 70-bridge pier; 80-beam body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Various combinations of the specific features in the embodiments described in the detailed description may be made without contradiction, for example, different embodiments may be formed by different combinations of the specific features, and in order to avoid unnecessary repetition, various possible combinations of the specific features in the present application will not be described separately.

In the following description, the term "first \ second \ … …" is referred to merely to distinguish different objects and does not indicate that there is identity or relationship between the objects. It should be understood that references to "above", "below", "upper" and "lower" are intended to refer to the orientation during normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.

The application provides a support for a bridge, which is a force transmission device of a supporting beam body and comprises a basin-shaped rubber support, a spherical support, a steel support, a spherical steel support and the like. It should be noted that the present application does not limit the type of the support.

The following will roughly describe the composition and operation principle of the spherical steel pedestal by taking the spherical steel pedestal as an example. As shown in fig. 1, the stand may include a base plate 10 and a stand body 20. Wherein, the support main body 20 comprises an upper support plate 21, a slide block 22 and a lower support plate 23, a slide cavity 24 is formed between the upper support plate 21 and the lower support plate 23, and the slide block 22 is placed in the slide cavity 24 and can slide in the slide cavity 24. At least one of the surface of the upper support plate 21 close to the sliding cavity 24 and the surface of the lower support plate 23 close to the sliding cavity 24 is a circular arc surface. The side of the slider 22 that contacts the arcuate surface is also correspondingly configured to match the arcuate surface to allow the slider to slide within the sliding chamber 24. Further, a friction pair may be provided between the slider 22 and the upper support plate 21 and between the slider 22 and the lower support plate 23 to reduce wear of the slider 22, the upper support plate 21, and the lower support plate 23. The lower support plate 23 is connected to the base plate 10 and is movable relative to the base plate 10. The bottom plate 10 is provided with a sliding chute 11, the lower support plate 23 is correspondingly provided with a guide rail 231, and the guide rail 231 moves along the sliding chute 11. Optionally, a friction pair is arranged between the sliding chute 11 and the guide rail 231, and a friction pair is also arranged between the lower support plate 23 and the bottom plate 10, so that abrasion among the lower support plate 23, the bottom plate 10 and the guide rail 231 is reduced. It should be noted that a friction pair is a device or object that contacts and generates frictional movement between two components, for example, a friction pair may be a wear plate made of a thermoplastic polyester material.

When the upper support plate 21 vibrates, the upper support plate 21 slides with the slider 22, and part of vibration energy is consumed through sliding friction of the slider 22 in the sliding cavity 24, so that the vibration energy transmitted from the upper support plate 21 to the lower support plate 23 is reduced, and further the movement displacement of the lower support plate 23 relative to the bottom plate 10 is reduced.

As shown in fig. 2, the support further includes a guide rod 30, a flexible damping member 40. Wherein, the base plate 10 is a flat plate for placing the holder main body 20. And a guide bar 30 disposed above the base plate and extending in the first direction. The first direction is a direction in which the guide bar 30 extends in length (the left-right direction shown in fig. 2). Specifically, the guide bar 30 is a long bar, and the cross section thereof may be circular, square, rectangular, or other shapes. The guide bar 30 may be disposed on the base plate 10 without a space therebetween. In another embodiment, the guide bar 30 may be spaced apart from the base plate 10 to reduce friction between the guide bar 30 and the base plate 10. The interval arrangement means that the two components do not contact with each other, but a gap is left. The guide bar 30 has a first state in which a relative displacement with respect to the base plate 10 in a first direction (left-right direction as shown in fig. 2) 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 10 in the first direction (left-right direction as shown in fig. 2) is greater than the first preset value. It should be noted that the first preset value is determined according to actual conditions. Specifically, the guide rod 30 is reciprocally movable with respect to the base plate 10 along the length direction of the guide rod 30, and the reciprocal movement displacement of the guide rod 30 in the first state is smaller than the movement displacement thereof in the second state. The first state and the second state may be two states of the guide rod determined by the external environment, for example, the first state is a state of the bridge deformed due to the temperature effect, and it should be noted that the temperature effect refers to a condition that the bridge expands when heated and contracts when cooled. In this state, the displacement of the movement of the guide bar 30 is small. The second state is a state in which an earthquake occurs, and in this state, the displacement of the guide bar 30 is large.

As shown in fig. 2, the stand main body 20 is disposed around the guide bar 30 to be slidable in a first direction (left-right direction as shown in fig. 2) with respect to the guide bar 30. Specifically, the holder body 20 is provided with an arm 25 perpendicular to the longitudinal direction (vertical direction as shown in fig. 2) of the guide bar 30, and the arm 25 is provided with an engaging groove 251 extending in the longitudinal direction (horizontal direction as shown in fig. 2) of the guide bar, and the size of the engaging groove 251 is at least equal to the size of the cross section of the guide bar 30. The guide bar 30 penetrates the engaging groove 251 so that the holder main body 20 can slide back and forth along the guide bar 30.

As shown in fig. 2, the flexible damping member 40 is coupled to the base plate 10 and is movably coupled to the stand body 20. It should be noted that the flexible damping member 40 is a device that dissipates kinetic energy by deforming to provide a damping force. The movable connection means that the two components can move relative to each other while being connected. Specifically, the flexible damping member 40 may be fixedly connected to the base plate 10, and in another embodiment, the flexible damping member 40 may be rotatably connected to the base plate. For example, as shown in fig. 3, a circular through hole 41 is formed in the flexible damping member 40, the fixing member 12 is formed on the base plate 10, a second through hole 121 having the same size as the first through hole 41 is also formed in the fixing member 12, and a cylindrical pin penetrates through the second through hole 121 and the first through hole 41 in sequence to connect the fixing member 12 and the flexible damping member 40, and the flexible damping member 40 can rotate around the cylindrical pin. The flexible damping member 40 is also movably connected to the stand body 20, for example, one end of the flexible damping member 40 may be connected to the base plate 10, and the other end is movably connected to the movable stand. The flexible damping member 40 may be slidably connected, for example, a sliding protrusion is provided on the flexible damping member 40, a sliding track along the length direction of the sliding rod (left and right direction as shown in fig. 2) is provided on the support body 20, and the support body 20 and the flexible damping member 40 are movably connected by sliding the sliding protrusion in the sliding track. The support main body 20 can move relatively to the flexible damping member 40 within the movable connection range, when the movement displacement of the support main body 20 is larger than the movable connection range, the support main body 20 can drive the flexible damping member 40 to move, and the flexible damping member 40 is connected with the bottom plate 10, so that the flexible damping member 40 can be extruded or pulled to deform, the movement energy of the support main body 20 is further consumed, and the movement displacement of the support main body 20 is gradually reduced.

As shown in fig. 2, in the first state, the flexible damping member 40 remains stationary; in the second state, the flexible damping member 40 is deformed by the holder main body 20. Specifically, in the first state, the support body 20 is in a static state or does a movement with a small displacement along the guide rod 30, and the movement displacement of the support body 20 is smaller than or equal to the maximum movement displacement of the support body 20 relative to the movement of the flexible damping member 40, so that the movement of the support body 20 cannot drive the flexible damping member 40 to move. In the second state, the support body 20 makes a large displacement movement along the guide rod, and the movement displacement is larger than the maximum movement displacement of the support body 20 relative to the movement of the flexible damping member 40, so that the support body 20 drives the flexible damping member 40 to extrude or stretch and deform, and the flexible damping member 40 reduces the movement energy of the support body 20.

The support provided by the embodiment comprises a bottom plate, a guide rod, a support main body and a flexible damping part, wherein the bottom plate of the flexible damping part is connected with the support main body in a movable mode; in the second state, the movement displacement of the support main body along the guide rod is larger than the movement range of the support main body relative to the flexible damping piece, so that the support main body can drive the flexible damping piece to move, the flexible damping piece is extruded or stretched to deform, the movement energy of the support main body is consumed, and the movement displacement of the support main body is gradually reduced. The embodiment of the application realizes graded energy consumption and shock absorption through different motion conditions of the flexible damping piece in two states, and meanwhile, the flexible damping piece only plays a role in the second state, so that the use times of the flexible damping piece are effectively reduced, the use time is prolonged, and the cost is saved.

In some embodiments, as shown in fig. 4, a restoring member 50 is disposed between the holder main body 20 and the guide bar 30; in the first state, in the case where the stand main body 20 slides with respect to the guide bar 30 from the initial position, the restoring member 50 generates a force for restoring the stand main body 20 to the initial position. The initial position refers to a position where the holder main body 20 is in a rest state. Specifically, one end of the restoring member 50 contacts the holder main body 20, and the opposite end of the restoring member 50 is fixedly connected to the guide bar 30. For example, the restoring member 50 is a restoring spring having two opposite ends, one of the two opposite ends is fixedly connected to the support body 20, and the other end is fixedly connected to the guide rod 30, and in the first state, when the support body 20 is stationary relative to the guide rod 30, the restoring spring is in an unstressed state; when the holder body 20 moves relative to the guide bar 30, the return spring is stretched, generating a force to restore the holder body 20 to the original position, against the movement of the holder body 20 relative to the guide bar 30.

Through set up the piece that resets between support main part and guide bar to under the skew initial position's of relative guide bar of support main part the condition, provide the power that makes support main part reply initial position, in order to overcome the skew initial position's of support main part motion, and then avoided support main part to take place the dislocation with the bridge when the application, influence support bridge.

In some embodiments, as shown in fig. 5, the restoring member 50 includes: a force-transmitting member 51 and an elastic member 52. Wherein the force transmission element 51 is fixedly connected to the guide rod 30. Specifically, the force transmission member 51 may be annular, and the guide rod 30 penetrates through the annular force transmission member 51, so that the force transmission member 51 is fixed to the guide rod 30. The guide member 30 may be provided with a screw thread and the force-transmitting member 51 may be provided with a matching screw thread, which screw the force-transmitting member 51 onto the guide rod 30 by screw-fitting. One end of the elastic member 52 is connected to the force transmitting member 51, and the other end of the elastic member 52 is in contact with the holder main body 20. Specifically, the elastic member 52 is disposed between the force transmitting member 51 and the holder main body 20, and the elastic member 52 is disposed around the guide bar 30. When the holder body 20 slides along the guide rod 30, the elastic member 52 is pressed together with the force transmission member 51, so that the elastic member 52 generates a force against the pressing direction of the holder body 20, and the movement of the holder body 20 is prevented until the holder body 20 returns to the initial position. Alternatively, two elastic members 52 may be provided on one guide bar 30, and the two elastic members 52 are symmetrically provided with respect to the holder body 20, so that the holder body 20 can provide a force for returning the holder body 20 to the original position when reciprocating along the guide bar 30.

Through biography power piece and guide bar fixed connection to when making the support main part motion, the support main part extrudees the elastic component with passing power piece jointly, thereby produces the power that prevents the motion of support main part, so that the support main part restores to initial position, and the elastic component is more easily damaged in the tensile state than the compression state, adopts the mode of compression elastic component to prevent the motion of support main part, avoids damaging the elastic component.

In some embodiments, as shown in fig. 6, the flexible damping member 40 includes: the main body 42, the first connecting arm 43 and the second connecting arm 44, wherein the first connecting arm 43 protrudes out of the main body 42 and is connected with the bottom plate 10, and the second connecting arm 44 protrudes out of the main body and is movably connected with the support main body 20; with a space between the first connecting arm 43 and the second connecting arm 44. It should be noted that the spacing space means that there is a distance between the two components, that is, there is a distance between the first connecting arm 43 and the second connecting arm 44. Specifically, the body 42 may be elongated, and the first connecting arm 43 and the second connecting arm 44 may be disposed at opposite ends of the body 42. The first connecting arm 43 can be rotatably connected to the support main body 20, and in the second state, the support main body 20 drives the second connecting arm 44 to move, 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 by a certain angle around the connecting point connected to the bottom plate 10 to buffer the sudden stress of the flexible damping member 40, thereby avoiding the damage of the flexible damping member 40. After the first connecting arm 43 completes the rotation movement, the main body 20 still drives the second connecting arm 44 to move, so that the second connecting arm 44 and the body 42 and the first connecting arm 43 are mutually extruded or stretched, and the flexible damping member 40 is deformed and absorbs energy. Alternatively, the first connecting arms 43 may be provided in plural, the plural first connecting arms 43 are respectively connected to the base plate 10, and the plural first connecting arms 43 are spaced apart from the second connecting arms 44, so as to further provide the energy absorbing capability of the flexible damping member 40. For example, two second connecting arms 43 may be provided, and two second connecting arms 43 are symmetrically provided on the main body 42 with the second connecting portion 44 as a symmetry axis, so that when the main body 20 of the support base drives the second connecting arms 44 to move, one section of the main body 42 is compressed while the other section of the main body 42 is stretched, so as to provide double resistance to prevent the main body 10 of the support base from moving, thereby improving the ability of the flexible damping to absorb energy.

The base plate and the support main body are respectively connected with the body through the first connecting arm and the second connecting arm, and the space is reserved between the first connecting arm and the second connecting arm so as to increase the deformation of the flexible damping piece and increase the shock absorption and energy absorption capacity of the flexible damping piece.

In some embodiments, as shown in fig. 7, one of the second connecting arm 44 and the stand main body 20 is provided with a through hole 252 having a length in the first direction (the left-right direction as shown in fig. 7), and the other is fixed with a connecting member 441 for penetrating the through hole 252, the length of the through hole 252 being 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 formed in an oblong shape, and both ends of the through hole 252 in the longitudinal direction are formed in arc shapes so that the connector 441 can slide in the through hole 252. The connecting member 44 is elongated and has a longitudinal direction perpendicular to the longitudinal direction of the through hole 252. The cross-sectional area of the portion of the connecting member 44 sliding in the through-hole 252 is smaller than or equal to the pitch of the through-hole 252 so that the connecting member 441 can slide more smoothly in the through-hole 252. Note that the pitch of the through holes refers to a distance of the through holes 252 in a direction perpendicular to the length direction of the through holes 252. The through hole 252 and the attaching member 441 are provided on the second connecting arm 44 and the stand main body 20, respectively, that is, when the through hole 252 is provided on the stand main body 20, the attaching member 441 is provided on the second connecting arm 44, or the through hole 252 is provided on the second connecting arm 44 and the attaching member 441 is provided on the stand main body 20. Wherein the sliding displacement of the stand main body 20 relative to the guide bar 30 is equal to a first preset value, and the connecting member 441 is located at one end of the through hole 252 in a first direction (left-right direction as shown in fig. 7). Specifically, the support body 20 is movably connected with the flexible damping member 40 through the through hole 252 and the connecting member 441. When the support body 20 moves, the maximum displacement of the relative movement between the support body 20 and the flexible damping member 40 is obtained when the connecting member 44 moves from the initial position to one end of the through hole 252 in the length direction, and when the support body 20 continues to move, the support body 20 drives the flexible damping member 40 to move, so that the maximum displacement of the relative movement 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 disposed with respect to the holder body 20, the through hole 252 is also symmetrically disposed with respect to the holder body 20, that is, the initial position of the connecting member 441 is located at the middle of the through hole 252, and at this time, the distances from the connecting member 441 to both ends of the through hole 252 in the length direction are the same, and at this time, the first preset value is half the length of the through hole 252 in the length direction (the left-right direction as shown in fig. 7).

Through setting up through-hole and connecting piece on support main part and the second linking arm respectively, realize support main part and flexible damping spare swing joint, also conveniently confirm the size of first default through the length of control through-hole simultaneously.

In some embodiments, as shown in fig. 6, the length direction of the body 42 is along a first direction (left-right direction shown in fig. 6), and the length directions of the first connecting arm 43 and the second connecting arm 44 are at an angle greater than a preset angle with respect to the first direction (left-right direction shown in fig. 6). 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 body 42, so that the first connecting arm 43 and the second connecting arm 44 can be extruded or stretched with the body 42, and the deformation amount of the flexible damping member 40 is increased. The angle between the length direction of the first connecting arm 43 and the first direction (the left-right direction as shown in fig. 6) of the body 42 and the angle between the length direction of the second connecting arm 44 and the first direction (the left-right direction as shown in fig. 6) of the body 42 may be the same or different, for example, the angle between the length direction of the first connecting arm 43 and the first direction (the left-right direction as shown in fig. 6) of the body 42 is 60 °, and the angle between the length direction of the second connecting arm 44 and the first direction (the left-right direction as shown in fig. 6) of the body 42 is 90 °.

An included angle is formed between the length direction of the first connecting arm and the length direction of the second connecting arm and the length direction of the body (the left and right directions shown in fig. 7), so that the length directions of the first connecting arm and the second connecting arm are not parallel to the length direction of the body, the second connecting arm and the body are extruded or stretched and deformed mutually between the body and the first connecting arm, the deformation of the flexible damping piece is increased, and the shock absorption and energy consumption capacity of the flexible damping piece is further enhanced.

In some embodiments, as shown in fig. 8, the support 1 further includes a limiting member 60 fixedly connected to the base plate 10, and the limiting member 60 is used for limiting the relative displacement between the guide rod 30 and the base plate 10 in the first direction (the left-right direction shown in fig. 8). Specifically, the limiting member 60 is fixed to the base plate 10 and connected to the guide rod 30, and in the first state, the limiting member 60 limits the movement 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. Alternatively, two stoppers 60 are provided, and are respectively connected to both ends of the guide bar 30 in the longitudinal direction thereof, so as to restrict the displacement of the guide bar 30 in a first direction (the left-right direction shown in fig. 8). For example, the end portions of the limiting member 60 and the guide bar 30 in the longitudinal direction are both magnets with the same magnetism, and in one state, the end portions of the limiting member 60 and the guide bar 30 are made to generate a mutually repulsive force due to the same magnetism, so as to limit the displacement of the guide bar 30 in the first direction (the longitudinal direction shown in fig. 8) relative to the base plate 10. When the relative displacement is greater than the first preset value, the position limiting member 60 contacts to limit the position. 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 limiting member 60, so as to drive the guide rod 30 to move in the first direction (the left-right direction shown in fig. 8), and contact the limiting function of the limiting member 60, so that the support 1 enters the second state.

The limiting piece limits the displacement of the guide rod relative to the bottom plate in the first state, and the limiting of the guide rod is released in the second state, so that the conversion from the first state to the second state is conveniently realized.

In some embodiments, as shown in fig. 9, the position-limiting member 60 includes a housing 61 and a blocking member 62, the housing 61 has a channel 611 extending in a first direction (a left-right direction shown in fig. 9) inside, and the guide rod 30 extends into the channel 611. Specifically, the housing 61 may be a rectangular parallelepiped or a cube, the housing 61 is fixed on the base plate 10, the channel 611 in the housing 61 may penetrate along the first direction, i.e., 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 may slide in the channel 611 along the length direction of the guide rod 30. Optionally, a friction member 612 is disposed at a contact position between the guide rod 30 and the channel 611, for reducing friction loss between the guide rod 30 and the channel 611. The blocking member 62 is disposed in the channel 611 and fixedly coupled to the housing 61 to block movement of the guide bar 30 in a first direction (left-right direction as viewed in fig. 9). Specifically, the length direction of the blocking member 62 forms an angle with the length direction of the channel 611, that is, the blocking member 62 is disposed parallel to the channel 611. A blocking member 62 is provided in the channel 611 near the end of the guide 30 to block movement of the guide 30 in the lengthwise direction thereof. The state of the force limit value of the blocking member 62 is a state in which the relative displacement is equal to a first preset value. It should be noted that the force limit is the maximum amount of force that the barrier 62 can withstand before breaking occurs. In particular, the stop 62 is a breakable element, such as a shear pin, that breaks when subjected to excessive force, thereby losing its restraining effect. The first state is changed to the second state by changing the limit rotation state of the guide rod 30, so that when the force received by the guide rod 30 along the length direction is greater than the limit value of the force applied to the blocking member 62, the first state is changed to the second state, i.e. the first preset value is equal to the maximum value of the force that the blocking member 62 can bear.

The limit part is set in the limit part to limit the guide rod, and meanwhile, the limit of the guide rod is relieved due to the characteristic that the limit part can be broken when being subjected to certain force, so that the conversion from the first state to the second state can be realized.

In some embodiments, as shown in fig. 10, there is an aperture between the bottom surface of the stand body 20 and the bottom plate 10. The bottom surface of the holder main body 20 is an end surface of the holder main body 20 close to the base plate 10. Specifically, the stand main body 20 is movable in a first direction (left-right direction as viewed in fig. 10) with respect to the base plate 10, and the bottom surface of the stand main body 20 is parallel to the base plate 10. Optionally, a gap is formed between the bottom surface of the support main body 20 and the bottom plate 10, the gap is used for placing a ball, ball grooves arranged along the first direction are arranged on the bottom surface of the support main body 20 and the bottom plate 10, and the support main body 20 slides on the ball, so that the support main body 20 moves relative to the bottom plate 10.

A gap is formed between the bottom surface of the support main body and the bottom plate, so that the bottom surface of the support main body and the bottom plate support slide mutually, and the friction force between the bottom surface of the support main body and the bottom plate is reduced.

As shown in fig. 10, the present embodiment further provides a bridge structure, including a support 1, a pier 70, and a beam 80 according to any of the above embodiments. Wherein, pier 70 and bottom plate 10 fixed connection, support 1 is located between pier 70 and the roof beam body 80. Specifically, when the support 1 is used, the beam body 80 is located above the support 1, and the upper end surface of the support 1 is fixedly connected with the beam body. The upper end surface of the cradle 1 refers to an end surface of the cradle body 20 away from the base plate 10. The pier 70 is fixedly coupled to the floor 10 such that the abutment 1 is positioned between the pier 70 and the girder 80, and the abutment 1 stands on the pier 70 to support the girder 80.

By using the support to support the beam body, when the support is in the first state, for example, the beam body 80 vibrates when a vehicle passes through, the support main body 20 is driven to vibrate, the support main body 20 consumes the vibration energy under the condition under the action of the reset piece 50, and the stability of the beam body 80 is further maintained; when the support body 20 drives the guide rod 30 to move in the second state, for example, in case of an earthquake, the reset element 50 cannot reset the support body 20, so as to drive the flexible damping element 40 to move, thereby consuming vibration energy and reducing the damage of the earthquake to the bridge.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims (10)

1. A damping support for a bridge, comprising:

a base plate;

the guide rod is arranged above the bottom plate and extends along a first direction, and the guide rod has a first state that the relative displacement of the guide rod and the bottom plate in the first direction is smaller than or equal to a first preset value and a second state that the relative displacement of the guide rod and the bottom plate in the first direction is larger than the first preset value;

the support body is arranged around the guide rod and can slide along the first direction relative to the guide rod;

the flexible damping part is connected with the bottom plate and movably connected with the support main body;

wherein in the first state the flexible damping member remains stationary; in the second state, the flexible damping part is driven by the support main body to deform.

2. The damping mount of claim 1, wherein a reset member is disposed between the mount body and the guide bar; in the first state, in a case where the holder main body slides with respect to the guide bar away from an initial position, the reset member generates a force for resetting the holder main body to the initial position.

3. The dampening mount of claim 2, wherein the reset member comprises:

the force transmission piece is fixedly connected with the guide rod;

one end of the elastic piece is connected with the force transmission piece, and the other end of the elastic piece is in contact with the support main body.

4. The damping mount of claim 1, wherein the flexible damping member comprises:

a body;

the first connecting arm protrudes out of the body and is connected with the bottom plate;

the second connecting arm protrudes out of the body and is movably connected with the support main body;

wherein a spacing space is provided between the first connecting arm and the second connecting arm.

5. The dampening shoe according to claim 4, wherein one of the second connecting arm and the shoe main body is provided with a through hole having a length extending in the first direction, and the other is fixed with a connecting member for penetrating the through hole, the length of the through hole being greater than the length of the connecting member in the first direction;

and when the sliding displacement of the support main body relative to the guide rod is equal to a first preset value, the connecting piece is positioned at one end of the through hole in the first direction.

6. The dampening shoe according to claim 4, wherein the length of the body is along the first direction, and the length of the first link arm and the second link arm is at an angle greater than a predetermined angle to the first direction.

7. The damping mount of claim 1, wherein the mount further comprises a stop fixedly coupled to the base plate, the stop configured to limit relative displacement of the guide bar and the base plate in the first direction; and when the relative displacement is larger than the first preset value, the limiting piece releases the limiting.

8. The dampening mount of claim 7, wherein the retainer comprises:

the shell is internally provided with a channel extending in the first direction, and the guide rod extends into the channel;

the blocking piece is arranged in the channel and fixedly connected with the shell so as to block the guide rod from moving along the first direction;

wherein, the state of the force limit value of the blocking piece is the state that the relative displacement is equal to the first preset value.

9. The dampening shoe of claim 1, wherein a gap is provided between the bottom surface of the shoe body and the bottom plate.

10. A bridge, comprising:

the damping mount of any one of claims 1 to 9;

the bridge pier is fixedly connected with the bottom plate;

a beam body;

wherein, the support is located between the pier and the beam body.

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