CN110565503A - Bridge assembled energy dissipation antidetonation dog that can reset - Google Patents
Bridge assembled energy dissipation antidetonation dog that can reset Download PDFInfo
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- CN110565503A CN110565503A CN201910805582.3A CN201910805582A CN110565503A CN 110565503 A CN110565503 A CN 110565503A CN 201910805582 A CN201910805582 A CN 201910805582A CN 110565503 A CN110565503 A CN 110565503A
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title description 2
- 238000005265 energy consumption Methods 0.000 claims abstract description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 230000009471 action Effects 0.000 abstract description 11
- 230000006378 damage Effects 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridge anti-seismic stop blocks, in particular to a bridge assembly type resettable energy-consumption anti-seismic stop block. The device comprises a back plate, a front plate, a U-shaped plate, a connecting rod, a spring, soft steel, a bolt, a gasket, a stiffening rib, a bolt hole and a rail; the U-shaped plate is characterized in that the front plate back plates are connected through a plurality of connecting rods sleeved with springs, the connecting rods are welded with the front plates, the other ends of the connecting rods penetrate through corresponding holes in the back plates and then are limited to be pulled out from the back plates through bolts, a plurality of bolt holes are formed in the left side plate and the right side plate of the U-shaped plate, the stop blocks can be connected to the cover beams through the bolts, and the connection is movable assembly type connection. Compared with the traditional stop block, the invention has simple structure and definite stress. Convert the rigid collision of traditional dog and girder into flexible collision, slow down the striking of seismic action to girder and dog, reduce the local destruction to dog and girder.
Description
Technical Field
The invention relates to the field of bridge anti-seismic stop blocks, in particular to a bridge assembly type resettable energy-consumption anti-seismic stop block.
Background
China is in the middle of the Asia-Europe seismic zone and the Pacific seismic zone, and belongs to the countries with multiple earthquakes. The bridge is used as a junction project for transportation and is in an extremely important position in earthquake relief. Once a bridge is damaged, huge social resources are needed to repair, reinforce and even rebuild, and more importantly, traffic transportation interruption can be caused, and disaster relief work after earthquake can be delayed, so that huge economic loss and social negative influence are brought. The reasonable anti-seismic design of the bridge plays an extremely important role in reducing the earthquake damage of the bridge.
The stop block is used as an important component of bridge anti-seismic, is usually arranged at the top of a pier capping beam, and has the functions of limiting the transverse displacement of a main beam, protecting a support and preventing the main beam from falling. Conventional dog is mostly the solid reinforced concrete piece of rectangle or trapezoidal cross-section, and its rigidity is great, produces great impact force when colliding with the girder, leads to dog and girder local destruction, passes to the substructure with the impact force even, causes the substructure damage. In addition, the dog is difficult to provide sufficient restoring force after the damage, arouses the great residual deformation of girder easily, increases the prosthetic degree of difficulty of bridge, draws the beam even, and the dog often faces the problem of repairing the difficulty after the damage.
Therefore, it is necessary to design an assembled resettable energy-dissipating anti-seismic stop block, which can convert rigid collision between the stop block and a main beam into flexible collision, can realize self-resetting after collision, and is convenient to install and replace.
Disclosure of Invention
Aiming at the technical problems, at present, no reasonable solution is provided, and in order to solve the defects of the traditional stop block in the earthquake, the invention provides the bridge assembly type resettable energy-consumption anti-seismic stop block which is an assembly type steel stop block, is convenient to install and replace, can slow down the impact of the earthquake action on a main beam and the stop block, consumes the ground energy under the action of rare earthquakes, limits the transverse displacement of the main beam, prevents the beam from falling, simultaneously provides the resetting function, and reduces the residual deformation of the main beam after the earthquake. In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
A bridge assembly type resettable energy-consumption anti-seismic stop block is characterized by comprising a back plate, a front plate, a U-shaped plate, a connecting rod, a spring, soft steel, a bolt, a gasket, a stiffening rib, a bolt hole and a rail; the U-shaped plate is characterized in that the front plate back plates are connected through a plurality of connecting rods sleeved with springs, the connecting rods are welded with the front plates, the other ends of the connecting rods penetrate through corresponding holes in the back plates and then are limited to be pulled out from the back plates through bolts, a plurality of bolt holes are formed in the left side plate and the right side plate of the U-shaped plate, the stop blocks can be connected to the cover beams through the bolts, and the connection is movable assembly type connection.
Furthermore, the back plate and the U-shaped plate are integrated, and a plurality of stiffening ribs are arranged along the height direction of the back plate and the horizontal direction of the left plate and the right plate of the U-shaped plate so as to improve the integral bending rigidity.
Furthermore, a horizontal rail is arranged on the inner side of the U-shaped plate and used for the front plate to horizontally slide.
Furthermore, a plurality of V-shaped mild steels are arranged on the front plate.
Further, a gasket is arranged between the back plate and each bolt.
Preferably, the diameters of the connecting rods are equal and equal to the inner diameter of the sleeved spring.
Preferably, the diameter of the opening on the back plate is larger than that of the connecting rod.
The invention has the beneficial effects that: compared with the traditional stop block, the invention has simple structure and definite stress. The front plate, the back plate and the U-shaped plate are steel plates, the rigidity is low, under the action of medium and small earthquakes, the springs between the front plate and the back plate contract, under the action of large earthquakes, the V-shaped soft steel deforms and consumes energy due to large impact force, rigid collision of a traditional stop block and a main beam is converted into flexible collision, the impact of the earthquake action on the main beam and the stop block is relieved, and local damage to the stop block and the main beam is reduced. In addition, the invention adopts the assembly type mounting method that the check block is connected with the bent cap by the bolt, the replacement is convenient, the existing check block with insufficient shock resistance or the damaged check block of the bridge can be replaced, the cost is lower, and the convenience and the economy of the maintenance in the later period of the construction can be ensured. In addition, the invention can provide a reset function, after the stop block is collided by the main beam, the spring between the front plate back plates is contracted, the collision action of the earthquake on the main beam and the stop block is relieved, after the earthquake action is finished, the restoring force of the spring can push the main beam to reset, the residual deformation of the main beam after the earthquake is reduced, and the bridge repairing difficulty is reduced. According to the invention, the soft steel is arranged on the front plate of the stop block, so that the earthquake energy can be dissipated through the collision deformation of the soft steel under the action of rare earthquakes, the transverse displacement of the main beam is limited, the beam falling is prevented, and the bridge can be conveniently repaired after the earthquake. The invention has the advantages of clear structure, simple manufacturing process, clear stress, lower cost, suitability for the old bridge of the new bridge, convenience for repair after earthquake and the like, and can be popularized and used in a large area.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a cross-sectional view of a fabricated resettable energy dissipating seismic stop for a bridge according to an embodiment of the present invention;
FIG. 2 is a top view of a bridge fabricated resettable energy dissipating seismic stop according to an embodiment of the present invention;
3 FIG. 3 3 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
FIG. 4 is a connection diagram of a fabricated resettable energy-dissipating seismic stop of a bridge and a cap beam of a main beam according to an embodiment of the invention;
FIG. 5 is an enlarged view of a bolt of the assembled resettable energy dissipating seismic stop of the bridge according to an embodiment of the invention;
In the figure: 1-back plate, 2-front plate, 3-U-shaped plate, 4-connecting rod, 5-spring, 6-mild steel, 7-gasket, 8-bolt, 9-stiffening rib, 10-bolt hole, 11-rail, 12-main beam, 13-support and 14-cover beam.
Detailed Description
As shown in fig. 1-5, the assembled resettable energy-consuming anti-seismic stop block for a bridge is characterized by comprising a back plate 1, a front plate 2, a U-shaped plate 3, a connecting rod 4, a spring 5, mild steel 6, bolts 8, a gasket 7, stiffening ribs 9, bolt holes 10 and a rail 11; the U-shaped plate is characterized in that the front plate back plates are connected through a plurality of connecting rods sleeved with springs, the connecting rods are welded with the front plates, the other ends of the connecting rods penetrate through corresponding holes in the back plates and then are limited to be pulled out from the back plates through bolts, a plurality of bolt holes are formed in the left side plate and the right side plate of the U-shaped plate, the stop blocks can be connected to the cover beams through the bolts, and the connection is movable assembly type connection.
In specific implementation, the back plate and the U-shaped plate are integrated, and a plurality of stiffening ribs are arranged along the height direction of the back plate and the horizontal direction of the left plate and the right plate of the U-shaped plate so as to improve the integral bending rigidity.
In specific implementation, a horizontal rail is arranged on the inner side of the U-shaped plate and used for the front plate to horizontally slide.
In specific implementation, a plurality of V-shaped mild steels are arranged on the front plate.
in specific implementation, a gasket is arranged between the back plate and each bolt.
in one embodiment, the connecting rods have the same diameter and the same inner diameter as the springs. In a specific implementation, the diameter of the opening on the back plate is larger than that of the connecting rod.
The working mechanism of the invention is as follows: under the normal application condition, leave certain distance between dog and the girder, do not hinder the normal application of girder. The connecting rod supports the front plate placed on the U-shaped plate rail, and the whole stop block is in a stable state. Under the condition of an earthquake, when the horizontal displacement of the main beam exceeds the reserved distance between the stop block and the main beam, the stop block starts to bear force, and because the soft steel selected by the stop block is harder and the spring is softer, the soft steel on the front plate is not deformed, the spring between the back plates of the front plate is contracted, the connecting rod slides towards the back plates, and the collision effect of the earthquake on the main beam and the stop block is relieved. When the restoring force of the spring is equal to the earthquake acting force, the main beam does not move any more, and the displacement of the main beam is limited; when the earthquake action disappears, the restoring force pushes the main beam back to the original position, and the main beam is reset. In rare earthquake conditions, when the main beam generates horizontal displacement exceeding the reserved distance between the stop block and the main beam, the stop block starts to be stressed, the soft steel on the front plate starts to be stressed, deformed and dissipated the ground energy, the spring between the back plate of the front plate starts to contract, and the connecting rod starts to slide towards the back plate; along with the continuous increase of the stress, the deformation of the mild steel is continuously increased, the energy consumption is increased, meanwhile, the deformation of the spring is continuously increased, and the restoring force is also continuously increased; when the restoring force is equal to the earthquake acting force, the main beam does not move any more; when the earthquake acting force disappears, the main beam can reset to a certain extent under the action of restoring force.
Claims (7)
1. The bridge assembly type resettable energy-consumption anti-seismic stop block is characterized by comprising a back plate (1), a front plate (2), a U-shaped plate (3), a connecting rod (4), a spring (5), mild steel (6), a bolt (8), a gasket (7), a stiffening rib (9), a bolt hole (10) and a rail (11); the connecting rod (4) that has spring (5) by a plurality of cover between front bezel (2) backplate (1) is connected, connecting rod (4) and front bezel (2) welding, connecting rod (4) other end pass corresponding trompil on backplate (1) after restrict the connecting rod through bolt (8) and extract in backplate department, be equipped with a plurality of bolt holes (10) on the board of the left and right sides of U template (3), the accessible bolt is connected the dog in the bent cap, this connection is the mobility assembled connection.
2. The bridge assembly type resettable energy-dissipating anti-seismic stop block of claim 1, wherein: the back plate (1) and the U-shaped plate (3) are integrated, and a plurality of stiffening ribs (9) are arranged along the height direction of the back plate and the horizontal direction of the left plate and the right plate of the U-shaped plate so as to improve the integral bending rigidity.
3. The bridge assembly type resettable energy-dissipating anti-seismic stop block of claim 1, wherein: and a horizontal rail (11) is arranged on the inner side of the U-shaped plate (3) and used for the front plate to horizontally slide.
4. The bridge assembly type resettable energy-dissipating anti-seismic stop block of claim 1, wherein: the front plate (2) is provided with a plurality of V-shaped mild steel (6).
5. The bridge assembly type resettable energy-dissipating anti-seismic stop block of claim 1, wherein: the diameters of the connecting rods (4) are equal and equal to the inner diameter of the spring (5).
6. The bridge fabricated resettable energy-dissipating seismic stop of claim 6, wherein: the diameter of the opening on the back plate (1) is larger than that of the connecting rod (4).
7. The bridge assembly type resettable energy-dissipating anti-seismic stop block of claim 1, wherein: a gasket (7) is arranged between the back plate (1) and each bolt (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805582.3A CN110565503A (en) | 2019-08-29 | 2019-08-29 | Bridge assembled energy dissipation antidetonation dog that can reset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805582.3A CN110565503A (en) | 2019-08-29 | 2019-08-29 | Bridge assembled energy dissipation antidetonation dog that can reset |
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| Publication Number | Publication Date |
|---|---|
| CN110565503A true CN110565503A (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910805582.3A Pending CN110565503A (en) | 2019-08-29 | 2019-08-29 | Bridge assembled energy dissipation antidetonation dog that can reset |
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| Country | Link |
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| CN (1) | CN110565503A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910505A (en) * | 2020-09-22 | 2020-11-10 | 中国地震局工程力学研究所 | Penetration type multistage energy consumption bridge anti-collision stop block |
| CN114541244A (en) * | 2022-01-25 | 2022-05-27 | 河南大学 | Self-resetting anti-seismic stop block |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951580A (en) * | 2016-06-24 | 2016-09-21 | 西南交通大学 | Energy dissipation self-reset anti-seismic retaining block structure for bridge |
| CN206467556U (en) * | 2017-02-16 | 2017-09-05 | 西南交通大学 | A kind of spring-rubber damping device with multistage function of seismic resistance |
| CN107268423A (en) * | 2017-07-13 | 2017-10-20 | 中交公路养护工程技术有限公司 | One kind can reset bridge block |
| KR101830863B1 (en) * | 2017-04-05 | 2018-02-21 | 용일토건 주식회사 | Hydraulic stopper for seismic control of bridge, and construction method for the same |
| CN107974925A (en) * | 2017-12-28 | 2018-05-01 | 中交公路养护工程技术有限公司 | A kind of two-way preloading bridge block |
| CN208183517U (en) * | 2018-04-24 | 2018-12-04 | 济南城建集团有限公司 | Stop assembly suitable for the bridge of straight web box girder or T beam energy consumption girder falling |
| CN209243551U (en) * | 2018-09-27 | 2019-08-13 | 河南省交通规划设计研究院股份有限公司 | Energy dissipating Self-resetting bridge shockproof structure |
| CN211228054U (en) * | 2019-08-29 | 2020-08-11 | 南昌大学 | Bridge assembled energy dissipation antidetonation dog that can reset |
-
2019
- 2019-08-29 CN CN201910805582.3A patent/CN110565503A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951580A (en) * | 2016-06-24 | 2016-09-21 | 西南交通大学 | Energy dissipation self-reset anti-seismic retaining block structure for bridge |
| CN206467556U (en) * | 2017-02-16 | 2017-09-05 | 西南交通大学 | A kind of spring-rubber damping device with multistage function of seismic resistance |
| KR101830863B1 (en) * | 2017-04-05 | 2018-02-21 | 용일토건 주식회사 | Hydraulic stopper for seismic control of bridge, and construction method for the same |
| CN107268423A (en) * | 2017-07-13 | 2017-10-20 | 中交公路养护工程技术有限公司 | One kind can reset bridge block |
| CN107974925A (en) * | 2017-12-28 | 2018-05-01 | 中交公路养护工程技术有限公司 | A kind of two-way preloading bridge block |
| CN208183517U (en) * | 2018-04-24 | 2018-12-04 | 济南城建集团有限公司 | Stop assembly suitable for the bridge of straight web box girder or T beam energy consumption girder falling |
| CN209243551U (en) * | 2018-09-27 | 2019-08-13 | 河南省交通规划设计研究院股份有限公司 | Energy dissipating Self-resetting bridge shockproof structure |
| CN211228054U (en) * | 2019-08-29 | 2020-08-11 | 南昌大学 | Bridge assembled energy dissipation antidetonation dog that can reset |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910505A (en) * | 2020-09-22 | 2020-11-10 | 中国地震局工程力学研究所 | Penetration type multistage energy consumption bridge anti-collision stop block |
| CN114541244A (en) * | 2022-01-25 | 2022-05-27 | 河南大学 | Self-resetting anti-seismic stop block |
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