CN113265941A - Anti-seismic stop block structure for limiting bidirectional movement of bridge - Google Patents
Anti-seismic stop block structure for limiting bidirectional movement of bridge Download PDFInfo
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- CN113265941A CN113265941A CN202110642547.1A CN202110642547A CN113265941A CN 113265941 A CN113265941 A CN 113265941A CN 202110642547 A CN202110642547 A CN 202110642547A CN 113265941 A CN113265941 A CN 113265941A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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Abstract
The invention relates to the technical field of bridge earthquake resistance, in particular to an earthquake-resistant stop block structure for limiting the bidirectional movement of a bridge, which comprises a steel corbel, a fixed top plate and an earthquake-resistant stop block, wherein the steel corbel is fixed above the side wall of a pier through a steel corbel bolt; the beam plate is fixed at the bottom of the main beam, the middle of the lower surface of the beam plate is provided with a connecting baffle, the bottom of the connecting baffle is connected with a collision cylinder, and the collision cylinder is positioned among the four collision rubbers. The invention can effectively limit the large displacement of the bridge in the transverse bridge direction and the vertical direction during the earthquake, prevent the bridge from falling and being damaged, reduce the possibility of collision of the bridge at the expansion joint and effectively protect the bridge deck and the bottom of the pier of the bridge.
Description
Technical Field
The invention relates to the technical field of bridge seismic resistance, in particular to an anti-seismic stop block structure for limiting bidirectional movement of a bridge.
Background
In view of the present bridge mainstream adopts the cross bridge to set up concrete antidetonation dog, and the produced power conduction of unable effectual control rigid collision leads to the pier to the damage that the pier bottom caused, and vertical, takes place too big displacement to lead to taking place to fall the roof beam and produce the harm to the support along the bridge to the bridge. Because the displacement and force generated by an earthquake on the bridge are complex and variable, only one situation is considered that no way is ensured that the bridge body can keep relative integrity in the earthquake, and the bridge damage caused by the earthquake is mostly positioned in the transverse bridge direction and the vertical bridge direction of the bridge. Therefore, a device needs to be developed, which can play a role in limiting the bridge in the transverse direction and the vertical direction, and convert the rigid collision causing the damage of the bridge into the elastic-plastic collision capable of consuming partial energy, so as to solve the problem that the bridge and the movable support saddle generate large relative displacement to cause the damage of the support saddle, and the bridge pier caused by the rigid collision between the bridge body and the stop block generates irreparable damage.
Therefore, a novel bridge anti-seismic stop block structure needs to be designed and developed, can effectively play an anti-seismic role in an earthquake, and can limit the transverse and vertical displacement of the upper beam body of the bridge.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an anti-seismic stop block structure for limiting the bidirectional movement of a bridge, which can effectively limit the larger displacement of the bridge in the transverse direction and the vertical direction during an earthquake, prevent the bridge from falling and being damaged, reduce the possibility of collision of the bridge at an expansion joint, and effectively protect the bridge deck and the bottom of a pier of the bridge.
In order to realize the purpose of the invention, the invention adopts the technical scheme that:
the invention discloses an anti-seismic stop block structure for limiting bidirectional movement of a bridge, which comprises a steel corbel, a fixed top plate and an anti-seismic stop block, wherein the steel corbel is fixed above the side wall of a pier through a steel corbel bolt; the beam plate is fixed at the bottom of the main beam, the middle of the lower surface of the beam plate is provided with a connecting baffle, the bottom of the connecting baffle is connected with a collision cylinder, and the collision cylinder is positioned among the four collision rubbers.
The concrete baffle plate is characterized in that concrete stop blocks are connected to two sides of the bottom of the beam plate, and a plurality of semi-cylindrical friction blocks are arranged on the inner wall of each concrete stop block and the outer wall of each vertical baffle plate.
The both sides of antidetonation dog are equipped with steel baffle, steel baffle's inner wall top with the outer wall below of concrete dog is equipped with solid cylinder and hollow cover post respectively, the outer end of hollow cover post is equipped with and is used for solid cylinder male recess, solid cylindrical outer wall with the inner wall of hollow cover post is friction surface.
The outer wall of the steel baffle is provided with a concrete long column; the top both sides of steel bracket are fixed with the concrete dog, be fixed with the concrete stopper on the inner wall of concrete dog, be equipped with on the inner wall of concrete stopper and be used for the gliding spout of concrete rectangular post, be fixed with steel spring on the inner wall of spout.
Be fixed with the steel web who is right triangle on the outer wall of concrete baffle, the steel web is fixed in the fixed roof top, the fixed roof passes through fixing bolt to be fixed in the steel corbel top.
The steel bracket comprises a steel bracket top plate, a steel bracket side plate, a steel bracket web plate and a steel bracket bottom plate, the steel bracket side plate is fixedly connected to the side wall of the pier through a plurality of steel bracket bolts, the steel bracket top plate and the steel bracket bottom plate are horizontally arranged on one side of the steel bracket side plate, the steel bracket web plate is vertically arranged between the steel bracket top plate and the steel bracket bottom plate in two parallel, and the steel bracket web plate is connected to one side of the steel bracket side plate.
A toothed belt block is fixed above the inner wall of the vertical baffle, a semicircular arc groove is formed in the inner wall of the toothed belt block, and a toothed belt is arranged on the inner wall of the semicircular arc groove; the outer wall of the connecting baffle is hinged with a rotating plate, and the outer end of the rotating plate is connected with a cylindrical sawtooth wheel meshed with the toothed belt.
The invention has the beneficial effects that:
(1) the device can effectively limit the bridge to generate larger displacement in the transverse bridge direction and the vertical direction during earthquake, prevent the bridge from falling and being damaged, reduce the possibility of collision of the bridge at the expansion joint and effectively protect the bridge deck and the bottom of the pier of the bridge;
(2) the collision rubber is a rubber material with better collision buffering performance, has better buffering effect in the collision process with the friction cylinder, can effectively consume earthquake energy, and limits the overlarge displacement of the bridge along the bridge direction;
(3) the device comprises an embedded cylinder, a carbon steel spring, a concrete limiting block, a rough friction inner wall, an arc gear structure, a collision structure and the like, and when an earthquake occurs, the energy acted on the bridge by the earthquake can be effectively converted into elastic potential energy and heat energy, so that the damage of the bridge is ensured in a reasonable range;
(4) the carbon steel spring and the collision rubber of the device have certain self-restoring capacity, can ensure the restoration effect on the small displacement generated by the bridge when a small earthquake occurs, and can accelerate the restoration process after the bridge is damaged in the earthquake.
(5) The invention has simple structure, simple and convenient manufacture and good anti-seismic effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic representation of the forward bridge arrangement of the present invention;
FIG. 3 is a partial schematic view of the first embodiment of the present invention;
fig. 4 is a partial structural schematic diagram of the present invention.
Detailed Description
The invention is further illustrated below:
referring to figures 1-4 of the drawings,
the invention discloses an anti-seismic stop block structure for limiting bidirectional movement of a bridge, which comprises a steel corbel 1, a fixed top plate 5 and an anti-seismic stop block 11, wherein the steel corbel 1 is fixed above the side wall of a pier 32 through a steel corbel bolt 23, the fixed top plate 5 is fixed at the top of the steel corbel 1, the anti-seismic stop block 11 is arranged at the upper part of the fixed top plate 5, the top of the anti-seismic stop block 11 is provided with two vertical baffle plates 27, and collision rubber 16 is arranged below the inner wall of each vertical baffle plate 27 and in the middle of the inner wall; the beam plate 20 is fixed at the bottom of the main beam 30, a connecting baffle 26 is arranged in the middle of the lower surface of the beam plate, a collision cylinder 17 is connected to the bottom of the connecting baffle 26, and the collision cylinder 17 is located among the four collision rubbers 16.
The concrete stop blocks 28 are connected to two sides of the bottom of the beam plate 20, and a plurality of semi-cylindrical friction blocks 15 are arranged on the inner wall of each concrete stop block 28 and the outer wall of each vertical baffle plate 27.
The both sides of antidetonation dog 11 are equipped with steel baffle 12, the inner wall top of steel baffle 12 with the outer wall below of concrete dog 28 is equipped with solid cylinder 13 and hollow cover post 14 respectively, the outer end of hollow cover post 14 is equipped with and is used for solid cylinder 13 male recess, the outer wall of solid cylinder 13 with the inner wall of hollow cover post 14 is coarse friction surface.
The outer wall of the steel baffle plate 12 is provided with a concrete long column 10; the top both sides of steel bracket 1 are fixed with concrete dog 7, be fixed with concrete stopper 9 on the inner wall of concrete dog 7, be equipped with on the inner wall of concrete stopper 9 and be used for the gliding spout of concrete rectangular column 10, be fixed with steel spring 8 on the inner wall of spout.
Be fixed with on the outer wall of concrete baffle 7 and be right triangle's steel web 6, steel web 6 is fixed in 5 tops of fixed roof, fixed roof 5 is fixed in through fixing bolt 24 1 top of steel bracket.
Steel corbel 1 includes steel corbel roof 4, steel corbel curb plate 3, steel corbel web 22, steel corbel bottom plate 2, the steel corbel curb plate passes through 23 fixed connection at 32 lateral walls of pier through a plurality of steel corbel bolts, 3 one sides of steel corbel curb plate are located to steel corbel roof 4 and 2 levels of steel corbel bottom plate, and vertically between the two set up two parallel steel corbel webs 22, steel corbel web 22 is connected in 3 one sides of steel corbel curb plate.
A toothed belt block 29 is fixed above the inner wall of the vertical baffle 27, a semicircular arc groove is formed in the inner wall of the toothed belt block 29, and a toothed belt 18 is arranged on the inner wall of the semicircular arc groove; the outer wall of the connecting baffle 26 is hinged with a rotating plate 19, and the outer end of the rotating plate 19 is connected with a cylindrical sawtooth wheel 31 meshed with the toothed belt 18.
The working principle is as follows: when an earthquake occurs, the bridge girder generates forward displacement to drive the collision cylinder 17 at the top of the anti-seismic stop block 11 to be in contact with the collision rubber 16 on the side wall, a part of energy of the earthquake is absorbed through extrusion deformation between the collision cylinder 17 and the collision rubber 16, a certain gap is reserved between the solid cylinder 13 and the hollow sleeve column 14 between the steel baffle plate 12 and the concrete stop block 28 when the earthquake does not occur, when the earthquake occurs, through the forward displacement of the girder 30, the concrete baffle plate 28 drives the hollow sleeve column 14 and the solid cylinder 13 to generate relative displacement, the distance between the solid cylinder 13 and the hollow sleeve column 13 is reduced, along with the increase of earthquake intensity, the solid cylinder 13 slides relatively in the hollow sleeve column 14, the surfaces of the solid cylinder and the hollow sleeve column are rough, friction is generated, and the energy of the earthquake is further absorbed. When an earthquake reaches a certain strength, the anti-seismic stop dog 11 is displaced integrally, friction occurs between the concrete long column 10 and the concrete limiting block 9 between the outer steel baffle plate 12 and the concrete stop dog 7, and the carbon steel spring 8 is extruded to deform, so that the stability of the whole device when large forward displacement occurs is ensured due to the fixing and supporting effect of the steel web plate 6.
When the bridge girder takes place vertical displacement, the inner wall of concrete dog 28 with the clutch blocks 15 on the outer wall of perpendicular baffle 27 take place the friction, produce the internal energy, the connection baffle 26 that welds in girder 30 below also takes place vertical displacement, it rotates to drive the rotor plate 19 that is fixed in connection baffle 26 through the hinged-support, take place frictional force between the serrated wheel 31 that the meshing matches and the cingulum 18 and do work, simultaneously, the collision drum 17 of connection baffle 26 bottom collides with collision rubber 16 all around and takes place plastic deformation, because rubber material's collision rigidity is little, can cushion the collision power greatly, absorb the energy that the earthquake brought through friction acting and rubber deformation, the fourth cylindrical collision rubber 16 that is located collision drum 17 all around has restricted the holistic displacement of connection baffle 26, the vertical displacement of girder 30 has been restricted to a certain extent. The collision rubber 16 and the steel spring 8 can provide certain resilience, so that the device can be simply and rapidly repaired or disassembled for replacement, and the bridge can be ensured to keep certain functions after an earthquake.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the drawings or directly or indirectly applied to the related technical fields are included in the scope of the present invention.
Claims (7)
1. The utility model provides a restriction bridge two-way movement's antidetonation dog structure which characterized in that: the anti-seismic bridge pier is characterized by comprising a steel corbel (1), a fixed top plate (5) and an anti-seismic stop block (11), wherein the steel corbel (1) is fixed above the side wall of a pier (32) through a steel corbel bolt (23), the fixed top plate (5) is fixed at the top of the steel corbel (1), the anti-seismic stop block (11) is arranged on the upper portion of the fixed top plate (5), two vertical baffle plates (27) are arranged at the top of the anti-seismic stop block (11), and collision rubber (16) is arranged below the inner wall of each vertical baffle plate (27) and in the middle of the inner wall; the beam plate (20) is fixed to the bottom of the main beam (30), a connecting baffle (26) is arranged in the middle of the lower surface of the beam plate, a collision cylinder (17) is connected to the bottom of the connecting baffle (26), and the collision cylinder (17) is located among the four collision rubbers (16).
2. An anti-seismic stop structure for limiting bi-directional movement of a bridge according to claim 1, wherein: the concrete baffle plate is characterized in that concrete stop blocks (28) are connected to two sides of the bottom of the beam plate (20), and a plurality of semi-cylindrical friction blocks (15) are arranged on the inner wall of each concrete stop block (28) and the outer wall of each vertical baffle plate (27).
3. An anti-seismic stop structure for limiting bi-directional movement of a bridge according to claim 2, wherein: the both sides of antidetonation dog (11) are equipped with steel baffle (12), the inner wall top of steel baffle (12) with the outer wall below of concrete dog (28) is equipped with solid cylinder (13) and hollow cover post (14) respectively, the outer end of hollow cover post (14) is equipped with and is used for solid cylinder (13) male recess, the outer wall of solid cylinder (13) with the inner wall of hollow cover post (14) is coarse friction surface.
4. An anti-seismic stop structure for limiting bi-directional movement of a bridge according to claim 3, wherein: the outer wall of the steel baffle plate (12) is provided with a concrete long column (10); the top both sides of steel bracket (1) are fixed with concrete dog (7), be fixed with concrete stopper (9) on the inner wall of concrete dog (7), be equipped with on the inner wall of concrete stopper (9) and be used for the gliding spout of concrete rectangular column (10), be fixed with steel spring (8) on the inner wall of spout.
5. An anti-seismic stop structure for limiting bi-directional movement of a bridge according to claim 4, wherein: be fixed with steel web (6) that are right triangle on the outer wall of concrete baffle (7), steel web (6) are fixed in fixed roof (5) top, fixed roof (5) are fixed in through fixing bolt (24) steel corbel (1) top.
6. An anti-seismic stop structure for limiting bi-directional movement of a bridge according to claim 5, wherein: steel corbel (1) includes steel corbel roof (4), steel corbel curb plate (3), steel corbel web (22), steel corbel bottom plate (2), the steel corbel curb plate is through a plurality of steel corbel bolts (23) fixed connection at pier (32) lateral wall, steel corbel curb plate (3) one side is located to steel corbel roof (4) and steel corbel bottom plate (2) level, and vertical steel corbel web (22) that set up two parallels between the two, steel corbel web (22) is connected in steel corbel curb plate (3) one side.
7. An anti-seismic stop structure for limiting bi-directional movement of a bridge according to claim 6, wherein: a toothed belt block (29) is fixed above the inner wall of the vertical baffle (27), a semicircular arc groove is formed in the inner wall of the toothed belt block (29), and a toothed belt (18) is arranged on the inner wall of the semicircular arc groove; the outer wall of the connecting baffle plate (26) is hinged with a rotating plate (19), and the outer end of the rotating plate (19) is connected with a cylindrical sawtooth wheel (31) meshed with the toothed belt (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110642547.1A CN113265941A (en) | 2021-06-09 | 2021-06-09 | Anti-seismic stop block structure for limiting bidirectional movement of bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110642547.1A CN113265941A (en) | 2021-06-09 | 2021-06-09 | Anti-seismic stop block structure for limiting bidirectional movement of bridge |
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| CN113265941A true CN113265941A (en) | 2021-08-17 |
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| CN202110642547.1A Pending CN113265941A (en) | 2021-06-09 | 2021-06-09 | Anti-seismic stop block structure for limiting bidirectional movement of bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789715A (en) * | 2021-09-17 | 2021-12-14 | 南昌大学 | Sliding damping shock absorption limiting device suitable for bridge |
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2021
- 2021-06-09 CN CN202110642547.1A patent/CN113265941A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789715A (en) * | 2021-09-17 | 2021-12-14 | 南昌大学 | Sliding damping shock absorption limiting device suitable for bridge |
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