Novel rigidity-variable support

Abstract

The utility model belongs to the technical field of bridge components, and discloses a novel rigidity-variable support which comprises a bottom plate, and an upper support plate is arranged above the bottom plate. The supporting assembly is arranged between the bottom plate and the upper support plate, and the supporting assembly is used for providing main support for the upper support plate; the variable stiffness part is arranged between the bottom plate and the upper support plate and used for providing auxiliary support for the upper support plate; wherein the supporting assembly is matched with the variable-rigidity piece to support the upper support plate in a variable-rigidity mode, and the problems that in the prior art, due to the fact that supports with the same structural function are adopted on piers with different heights, the supports cannot adapt to the rigidity influence of the piers with different heights, and the rigidity of the piers with different heights is influenced are solved. And therefore, the bridge component is suitable for being used as a bridge component.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge components, and more specifically, to a novel variable-rigidity support. Background Art

[0002] Currently in bridges and building structures, bearings are important components connecting the superstructure and the substructure. They can reliably transmit the reaction force and deformation, displacement and rotation of the bridge superstructure to the substructure.

[0003] With the continuous development of bridge technology, especially in mountainous areas such as the west and southwest, bridge technology has achieved rapid development and breakthroughs. However, due to the inconsistent terrain, the height of the piers of the same beam varies greatly. At present, the same structural support is used on these piers of different heights. This cannot adapt to the stiffness of different pier heights, resulting in inconsistent bending moments at the bottom of each pier, small bending moments at high piers, large bending moments at low piers, and large bending moments at abutments, etc., which in turn makes the safety factors of each pier inconsistent, increasing maintenance costs and even affecting the overall service life of the bridge. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of variable stiffness bearing, which solves the problem in the prior art that the same structural function bearings are used on piers of different heights, resulting in the inability to adapt to the stiffness of different pier heights, thereby increasing the maintenance cost of the bridge and even affecting the service life of the bridge.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a new type of variable stiffness support, including a base plate, on which an upper support plate is arranged; a support assembly, which is arranged between the base plate and the upper support plate, and the support assembly is used to provide main support for the upper support plate; a variable stiffness member, which is arranged between the base plate and the upper support plate, and the variable stiffness member is used to provide auxiliary support for the upper support plate; wherein the support assembly and the variable stiffness member cooperate with each other to realize variable stiffness support for the upper support plate.

[0006] The working principle of this technical solution is as follows: between bridge piers of different heights, the support assembly and the variable stiffness parts cooperate with each other to achieve variable stiffness support, wherein the support assembly allows a certain offset between the upper bearing plate and the bottom plate, and the variable stiffness parts can provide a certain buffer distance, enabling the bridge beam to achieve longitudinal or transverse displacement and contraction, meeting the normal needs of the bridge function without damaging the bridge superstructure; extending the life of the bridge.

[0007] In summary, the utility model has the following beneficial effects:

[0008] Compared with the prior art, the utility model provides a new type of variable stiffness bearing by setting a support assembly and a variable stiffness part to cooperate with each other to achieve variable stiffness support, wherein the support assembly allows a certain offset between the upper bearing plate and the bottom plate, and the variable stiffness part can provide a certain buffer distance, which can enable the bridge beam to achieve longitudinal or transverse displacement and contraction, meet the normal needs of the bridge function, will not damage the bridge superstructure, and extend the life of the bridge.

[0009] Furthermore, the support assembly includes a limit ring fixedly arranged on the top of the base plate, a rubber block is arranged on the inner side of the limit ring, and a limit block for fixing the rubber block is fixedly arranged on the inner wall of the limit ring, a stainless steel slide plate is installed on the bottom of the upper support plate, an intermediate steel lining plate is arranged between the stainless steel slide plate and the rubber block, a flat slide plate is installed on the top of the intermediate steel lining plate, wherein the flat slide plate and the stainless steel slide plate are slidably connected.

[0010] Furthermore, the variable stiffness member is formed by vulcanizing a steel plate and rubber into one piece.

[0011] Furthermore, two shear stops are fixedly provided at the bottom of the upper support plate by bolts, the two shear stops are symmetrically arranged on both sides of the middle seat plate and slidably abut against it, and each shear stop has a shear pin running through the shear stop and the upper support plate.

[0012] Furthermore, two shear stops are fixed at the bottom of the upper support plate by bolts, and the two shear stops are symmetrically arranged on both sides of the middle steel liner and slidably abutted therewith, and a shear pin is provided on the inner side of each shear stop, and the shear pin runs through the shear stop and the upper support plate.

[0013] Furthermore, a rubber sealing ring is installed at the bottom of the upper support. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0015] Figure 2 This is a front view of the first embodiment of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the second embodiment of the utility model;

[0017] Figure 4 This is a front view of the second embodiment of the utility model;

[0018] Figure 5 This is a front view of the first embodiment of the utility model after the shear stopper falls;

[0019] Figure 6This is a front view of the shear stopper of the second embodiment of the utility model after it falls off;

[0020] Figure 7 It is a schematic diagram of the top view of the variable stiffness member and the bottom plate in one embodiment of the utility model;

[0021] Figure 8 It is a schematic diagram of the top view of the variable stiffness member and the bottom plate in one embodiment of the utility model;

[0022] Fig. 9 It is a schematic diagram of the top view of the variable stiffness member and the bottom plate in one embodiment of the utility model;

[0023] Fig.10 It is a schematic diagram of the top view of the variable stiffness member and the bottom plate in one embodiment of the utility model;

[0024] In the figure: 1. bottom plate; 2. variable stiffness member; 3. upper support plate; 4. shear stopper; 5. shear pin; 6. bolt; 7. stainless steel slide plate; 8. flat slide plate; 9. ball crown steel lining plate; 10. rubber sealing ring; 11. middle seat plate; 12. middle steel lining plate; 13. limit ring; 14. limit block; 15. rubber block. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 —10 The utility model is further described in detail.

[0026] like Figure 1 and Figure 3 As shown, an embodiment of the utility model proposes a new type of variable stiffness support, including a base plate 1, on which an upper support plate 3 is arranged; a support assembly, which is arranged between the base plate 1 and the upper support plate 3, and the support assembly is used to provide main support for the upper support plate 3; a variable stiffness member, which is arranged between the base plate 1 and the upper support plate 3, and the variable stiffness member is used to provide auxiliary support for the upper support plate 3; wherein the support assembly and the variable stiffness member cooperate with each other to achieve variable stiffness support for the upper support plate 3.

[0027] The specific working process is: between piers of different heights, the support assembly and the variable stiffness member 2 cooperate with each other to achieve variable stiffness support, wherein the support assembly allows a certain offset between the upper bearing plate 3 and the bottom plate 1, and the variable stiffness member 2 can provide a certain buffer distance, which can enable the bridge beam to achieve longitudinal or transverse displacement and contraction, meet the normal needs of the bridge function, and will not damage the bridge superstructure; extend the life of the bridge.

[0028] In this embodiment, a support assembly and a variable stiffness member 2 are arranged to cooperate with each other to achieve variable stiffness support, wherein the support assembly allows a certain offset between the upper bearing plate 3 and the base plate 1, and the variable stiffness member 2 can provide a certain buffer distance, which can allow the bridge beam to achieve longitudinal or transverse displacement and contraction, meet the normal needs of the bridge function, will not damage the bridge superstructure, and extend the life of the bridge.

[0029] like Figure 1 and Figure 2 As shown, according to another embodiment of the utility model, a new type of variable stiffness bearing, wherein the supporting assembly includes a middle seat plate 11 fixedly arranged on the top of the base plate 1, the top of the middle seat plate 11 is recessed downward to form a concave surface, a spherical skateboard is arranged on the concave surface, a spherical crown steel lining plate 9 is slidably arranged on the surface of the spherical skateboard, a flat skateboard 8 is arranged on the top of the spherical crown steel lining plate 9, and a stainless steel skateboard 7 is installed on the bottom of the upper bearing plate 3, wherein the flat skateboard 8 and the stainless steel skateboard 7 are slidably connected.

[0030] This solution is to set the middle seat plate 11, the ball crown steel lining plate 9, the flat slide plate 8 and the stainless steel slide plate 7 to cooperate with each other, allowing the upper support plate 3 to produce a certain sliding between the middle seat plate 11 and the bottom plate 1, and then cooperate with the variable stiffness member 2 to achieve variable stiffness support for the upper support plate 3, which can allow the bridge beam to achieve longitudinal or transverse displacement and contraction, meet the normal needs of the bridge function, will not damage the upper structure of the bridge, and extend the service life of the bridge.

[0031] In actual use, in order to meet the normal needs of bridge functions and limit the longitudinal or lateral displacement of the bridge, two shear blocks 4 can be fixedly provided at the bottom of the upper support plate 3 by bolts 6, and the two shear blocks 4 are symmetrically arranged on both sides of the middle seat plate 11 and slidably abut against it, and a shear pin 5 is provided on the inner side of each shear block, and the shear pin 5 runs through the shear block 4 and the upper support plate 3, so as to limit the lateral or longitudinal displacement of the upper support plate 3 relative to the base 1, so as to meet the normal needs of bridge functions, such as Figure 5 As shown, when encountering an emergency such as an earthquake, when the actual horizontal force is greater than the designed horizontal force, the shear pin 5 and the bolt 6 break from the breaking position, and the shear stopper 4 falls off naturally. The staff can subsequently install the shear stopper 4 to restore its function; in order to prevent dust from entering the interior of the device, a rubber sealing ring 10 can be installed at the bottom of the upper support 3.

[0032] like Figure 3 and Figure 4As shown, according to another embodiment of the utility model, a new type of variable stiffness bearing is provided, wherein the supporting assembly includes a limiting ring 13 fixedly arranged on the top of the base plate 1, a rubber block 15 is arranged on the inner side of the limiting ring 13, and a limiting block 14 for fixing the rubber block 15 is fixedly arranged on the inner side wall of the limiting ring 13, a stainless steel slide plate 7 is installed at the bottom of the upper bearing plate 3, an intermediate steel lining plate 12 is arranged between the stainless steel slide plate 7 and the rubber block 15, a plane slide plate 8 is installed on the top of the intermediate steel lining plate 12, wherein the plane slide plate 8 and the stainless steel slide plate 7 are slidably connected.

[0033] This solution is to set a limit ring 13, a rubber block 15, a stainless steel slide plate 7, an intermediate steel lining plate 12 and a flat slide plate 8 to cooperate with each other, allowing the upper support plate 3 to produce a certain sliding between the middle seat plate 11 and the bottom plate 1, and then cooperate with the variable stiffness member 2 to achieve variable stiffness support for the upper support plate 3, which can allow the bridge beam to achieve longitudinal or transverse displacement and contraction, meet the normal needs of the bridge function, will not damage the upper structure of the bridge, and extend the service life of the bridge.

[0034] In actual use, in order to meet the normal needs of bridge functions and limit the longitudinal or lateral displacement of the bridge, two shear blocks 4 can be fixedly provided at the bottom of the upper support plate 3 by bolts 6, so that the two shear blocks 4 are symmetrically arranged on both sides of the middle steel liner 12 and slide against it, and each shear block 4 is provided with a shear pin 5 on the inner side, and the shear pin 5 runs through the shear block 4 and the upper support plate 3, so as to limit the lateral or longitudinal displacement of the upper support plate 3 relative to the base 1, so as to meet the normal needs of bridge functions, such as Figure 6 As shown, when encountering an emergency such as an earthquake, when the actual horizontal force is greater than the designed horizontal force, the shear pin 5 and the bolt 6 break from the breaking position, and the shear stopper 4 falls off naturally. The staff can subsequently install the shear stopper 4 to restore its function; in order to prevent dust from entering the interior of the device, a rubber sealing ring 10 can be installed at the bottom of the upper support 3.

[0035] like Figure 1 and Figure 3 As shown, according to another embodiment of the utility model, a new type of variable stiffness support, wherein the variable stiffness member 2 is formed by vulcanization of steel plate and rubber in one piece, so as to provide a certain displacement distance between the upper support plate 3 and the bottom plate 1.

[0036] It should be noted that if Figure 7 — Fig.10 As shown, in actual use, the variable stiffness member 2 can be sheared according to different actual conditions, and its quantity, size and distribution form can be changed to match the bridge piers with different stiffness.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A new type of variable stiffness support, characterized in that: include: A bottom plate (1), with an upper support plate (3) disposed above the bottom plate; A support assembly, which is arranged between the bottom plate (1) and the upper support plate (3), and is used to provide main support for the upper support plate (3); A variable stiffness member (2) is arranged between the bottom plate (1) and the upper support plate (3), and the variable stiffness member is used to provide auxiliary support for the upper support plate (3); The support assembly and the variable stiffness member (2) cooperate with each other to achieve variable stiffness support for the upper support plate (3).

2. A novel variable stiffness support as claimed in claim 1, characterized in that: The support assembly comprises a middle seat plate (11) fixedly arranged on the top of the base plate (1), the top of the middle seat plate (11) is recessed downward to form a concave surface, a spherical slide plate is arranged on the concave surface, a spherical crown steel lining plate (9) is slidably arranged on the surface of the spherical slide plate, a flat slide plate (8) is arranged on the top of the spherical crown steel lining plate (9), and a stainless steel slide plate (7) is installed on the bottom of the upper support plate (3), wherein the flat slide plate (8) and the stainless steel slide plate (7) are slidably connected.

3. A novel variable stiffness support as claimed in claim 1, characterized in that: The support assembly comprises a limit ring (13) fixedly arranged on the top of the base plate (1), a rubber block (15) is arranged on the inner side of the limit ring (13), and a limit block (14) for fixing the rubber block (15) is fixedly arranged on the inner side wall of the limit ring (13), a stainless steel slide plate (7) is installed on the bottom of the upper support plate (3), an intermediate steel lining plate (12) is arranged between the stainless steel slide plate (7) and the rubber block (15), and a plane slide plate (8) is installed on the top of the intermediate steel lining plate (12), wherein the plane slide plate (8) is slidably connected to the stainless steel slide plate (7).

4. A novel variable stiffness support as claimed in claim 1, characterized in that: The variable stiffness member (2) is formed by vulcanizing a steel plate and rubber into one piece.

5. A novel variable stiffness support as claimed in claim 2, characterized in that: Two shear stoppers (4) are fixedly arranged at the bottom of the upper support plate (3) by bolts (6); the two shear stoppers (4) are symmetrically arranged on both sides of the middle seat plate (11) and are slidably abutted therewith; and a shear pin (5) is arranged on the inner side of each shear stopper (4); the shear pin (5) penetrates the shear stopper (4) and the upper support plate (3).

6. A novel variable stiffness support as claimed in claim 3, characterized in that: Two shear stoppers (4) are fixedly arranged at the bottom of the upper support plate (3) by bolts (6); the two shear stoppers (4) are symmetrically arranged on both sides of the middle steel liner (12) and are in sliding contact with the middle steel liner (12); and a shear pin (5) is arranged on the inner side of each shear stopper (4); the shear pin (5) passes through the shear stopper (4) and the upper support plate (3).

7. A novel variable stiffness support according to any one of claims 5 or 6, characterized in that: A rubber sealing ring (10) is installed at the bottom of the upper support plate (3).

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