CN113265939A - Multi-friction damping energy dissipation reset anti-seismic stop block structure - Google Patents
Multi-friction damping energy dissipation reset anti-seismic stop block structure Download PDFInfo
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- CN113265939A CN113265939A CN202110593026.1A CN202110593026A CN113265939A CN 113265939 A CN113265939 A CN 113265939A CN 202110593026 A CN202110593026 A CN 202110593026A CN 113265939 A CN113265939 A CN 113265939A
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- 238000013016 damping Methods 0.000 title claims abstract description 13
- 230000021715 photosynthesis, light harvesting Effects 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 238000005265 energy consumption Methods 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 239000000872 buffer Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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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 seismic resistance, in particular to a multi-friction damping energy-consumption reset seismic stop block structure which comprises a steel corbel, a friction cylinder, a wavy inner wall, collision rubber, seismic springs and a straight rod sliding structure, wherein the wavy inner wall is fixed on the upper part of a fixed top plate, and steel baffle side plates positioned on two sides of the fixed top plate are connected with steel baffle webs on the outer sides through the steel springs; the fixed support is fixed at the bottom of the main beam through a bolt, a rotating support is fixed at the bottom of the fixed support, the outer ends of the straight rod sliding structures are fixed at two sides above the inner wall of the steel baffle side plate respectively, the inner ends of the straight rod sliding structures are connected with the rotating support through a second steel spring, and the friction cylinder is connected with the lower portion of the rotating support through a connecting rod. The invention can limit the excessive displacement between the beam body and the bridge pier along the bridge direction, prevent the beam falling phenomenon, and buffer and consume part of the energy input by earthquake by means of the friction and the deformation of the buffer energy consumption device.
Description
Technical Field
The invention relates to the technical field of bridge seismic resistance, in particular to a multi-friction damping energy dissipation reset seismic stop block structure.
Background
Road and bridge traffic construction is extremely important to the development of a region. The bridge is also a junction in a traffic route, and once an accident occurs to the bridge, a series of butterfly effects such as economy, society and the like can be generated. Therefore, the safety performance and stability of the bridge such as earthquake resistance are worth discussing.
China has ever-changing topography, the shadows of bridges are arranged in various terrains and regions, and some regions belong to earthquake-prone areas. Bridges in these areas present many safety hazards. Once an earthquake happens, the bridge is easy to collapse, and great economic loss is brought to people, and even the life safety of people is threatened. And meanwhile, traffic is blocked, so that difficulties such as rescue are serious.
The bridge structure mainly breaks in earthquake in the forms of upper beam body falling, support seat breaking, pile foundation pier column cracking, beam body collision breaking and the like. However, most of bridges in China currently adopt measures for resisting earthquake that reinforced concrete stop blocks are arranged on two sides of the top of a pier capping beam, the method can limit the transverse bridge-direction displacement of an upper beam body to a certain extent, but local damage is easily caused during collision, and the method has no effect of restraining the displacement along the bridge direction.
Therefore need design and develop a neotype bridge antidetonation dog structure, can effectively exert the antidetonation effect when the earthquake, can restrict the bridge forward displacement of bridge upper portion roof beam body again, self impaired degree when will reduce the dog effect simultaneously.
Based on the reasons, the invention provides a multi-friction damping energy dissipation reset anti-seismic stop block structure.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-friction damping energy-consumption reset anti-seismic stop block structure which can limit overlarge displacement between a beam body and a pier along the bridge direction and prevent the beam falling phenomenon, the friction and the deformation of an energy-consumption buffering device are used for buffering and consuming part of energy input by earthquake, the energy of the earthquake is absorbed through the deformation of springs among all parts and the collision deformation of collision rubber, the damage degree of a bridge is reduced as much as possible, and the stop block can be reset to the original shape to continue working along with the enhancement of the recovery action of the energy-consumption buffering device and a torsion spring after the earthquake.
In order to realize the purpose of the invention, the invention adopts the technical scheme that:
the invention discloses a multi-friction damping energy-consumption reset anti-seismic stop block structure which comprises a steel corbel, a friction cylinder, a waveform inner wall, collision rubber, anti-seismic springs and a straight rod sliding structure, wherein the steel corbel is fixed above the side wall of a pier through a steel corbel bolt, a fixed top plate is arranged at the top of the steel corbel, the waveform inner wall is fixed at the upper part of the fixed top plate, and steel baffle side plates positioned at two sides of the fixed top plate are connected with a steel baffle web plate at the outer side through the steel springs; the fixed support is fixed at the bottom of the main beam through a bolt, a rotating support is fixed at the bottom of the fixed support, the outer ends of the straight rod sliding structures are fixed at two sides above the inner wall of the steel baffle side plate respectively, the inner ends of the straight rod sliding structures are connected with the rotating support through a second steel spring, and the friction cylinder is connected with the lower portion of the rotating support through a connecting rod.
The straight rod sliding structure comprises a connecting block, a sliding straight rod, a first collision rubber and a second collision rubber, the connecting block is of a square structure, the outer end of the connecting block is fixed above the inner wall of the steel baffle side plate, the inner end of the connecting block is connected with the outer end of the sliding straight rod, and the inner end of the sliding straight rod is connected with the rotating support through the second steel spring; the first collision rubber and the second collision rubber are fixed at the bottom of the outer end of the connecting block in a semi-cylindrical structure; the lowest point of the second collision rubber is lower than the lowest point of the first collision rubber.
The rotating support is fixed at the bottom of the fixed support in an inverted triangle support structure; the two friction cylinders are respectively connected with the lower part of the rotating support through a connecting rod, and the top of the connecting rod is hinged with the rotating support; and a plurality of semi-cylindrical friction blocks are arranged on the surface of the friction cylinder at equal intervals.
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.
The bottom of the steel baffle plate web plate is fixed on a lower fixing plate, the lower fixing plate is connected with the steel corbel top plate through a fixing bolt, a concave isosceles trapezoid groove is formed in the top of the corrugated inner wall, a plurality of semi-cylindrical protrusions are arranged on the upper surface of the corrugated inner wall at equal intervals, and the surface of the friction cylinder is in contact with the upper surface of the corrugated inner wall.
The invention has the beneficial effects that:
(1) the invention can limit the excessive displacement between the beam body and the bridge pier along the bridge direction, prevent the beam falling phenomenon, buffer and consume a part of earthquake input energy by the friction and deformation of the buffer energy consumption device, absorb the earthquake energy by the deformation of the springs among all the parts and the collision deformation of the collision rubber, reduce the damage degree of the bridge as much as possible, and the baffle block can be reset to the original shape to continue working along with the enhancement of the recovery action of the buffer energy consumption device and the torsion spring after the earthquake.
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 schematic view of the structure of the rotatable support of the present invention;
FIG. 4 is a schematic structural view of a steel baffle web and a steel spring according to the present invention;
FIG. 5 is a schematic structural view of a straight rod sliding structure according to the present invention;
FIG. 6 is a schematic structural diagram of a corrugated inner wall according to the present invention.
Detailed Description
The invention is further illustrated below:
referring to figures 1-6 of the drawings,
the invention discloses a multi-friction damping energy-consumption reset anti-seismic stop block structure which comprises a steel corbel 1, a friction cylinder 5, a corrugated inner wall 13, collision rubber 8, anti-seismic springs 3 and a straight rod sliding structure 7, wherein the steel corbel 1 is fixed above the side wall of a pier 23 through a steel corbel bolt 18, a fixed top plate 25 is arranged at the top of the steel corbel 1, the corrugated inner wall 13 is fixed at the upper part of the fixed top plate 25, and steel baffle side plates 27 positioned at two sides of the fixed top plate 25 are connected with a steel baffle web plate 2 at the outer side through steel springs 3; the fixed support 16 is fixed at the bottom of the main beam 21 through a bolt 12, a rotating support 4 is fixed at the bottom of the fixed support 16, the outer ends of the two straight rod sliding structures 7 are fixed at two sides of the upper portion of the inner wall of the steel baffle side plate 27, the inner ends of the two straight rod sliding structures are connected with the rotating support 4 through a second steel spring 10, and the friction cylinder 5 is connected with the lower portion of the rotating support 4 through a connecting rod.
The straight rod sliding structure 7 comprises a connecting block 71, a sliding straight rod 72, first collision rubber 8 and second collision rubber 9, the connecting block 71 is of a square structure, the outer end of the connecting block 71 is fixed above the inner wall of the steel baffle plate side plate 27, the inner end of the connecting block is connected with the outer end of the sliding straight rod 72, and the inner end of the sliding straight rod 72 is connected with the rotating support 4 through the second steel spring 10; the first collision rubber 8 and the second collision rubber 9 are fixed at the bottom of the outer end of the connecting block 71 in a semi-cylindrical structure; the lowest point of the second collision rubber 9 is lower than the lowest point of the first collision rubber 8, when an earthquake occurs, the earthquake energy is buffered through the second steel spring 10, when the earthquake reaches a certain intensity, the friction cylinder 5 rotates to the top end of the wave-shaped inner wall 13 to collide with the first collision rubber 8 and the second collision rubber 9, and the earthquake energy is consumed through the plastic deformation of the first collision rubber 8 and the second collision rubber 9.
The rotating support 4 is fixed at the bottom of the fixed support 16 in an inverted triangle support structure; the two friction cylinders 5 are respectively connected with the lower part of the rotating support 4 through connecting rods, and the top parts of the connecting rods are hinged with the rotating support 4; the surface of the friction cylinder 5 is provided with a plurality of semi-cylindrical friction blocks 6 at equal intervals, the friction blocks 6 on the surface of the friction cylinder 5 are matched and meshed with the concave-convex surface of the wave-shaped inner wall 13, and the friction cylinder 5 buffers seismic energy when rolling.
The bottom of the steel baffle plate web 2 is fixed on a lower fixing plate 26, the lower fixing plate 26 is connected with the steel corbel top plate 15 through a fixing bolt 11, a concave isosceles trapezoid groove is formed at the top of the corrugated inner wall 13, a plurality of semi-cylindrical protrusions are arranged on the upper surface of the corrugated inner wall at equal intervals, and the surface of the friction cylinder 5 is in contact with the upper surface of the corrugated inner wall 13.
The working principle is as follows: during earthquake, the main beam 21 moves forwards to drive the rotating support 4 to move, the second steel spring 10 between the sliding straight rod 72 and the rotating support 4 is compressed and deformed, the rotating support 4 drives the friction cylinder 5 inside the anti-seismic stop block to roll on the wave-shaped inner wall 13 through the connection of the connecting rod, on one hand, the second rigid spring 10 is compressed and deformed to consume earthquake energy, and on the other hand, the friction generated when the friction block 6 on the surface of the friction cylinder 5 rolls on the wave-shaped inner wall 13 consumes the earthquake energy;
when the earthquake reaches a certain intensity, the friction cylinder 5 rotates to the top end of the wave-shaped inner wall 13 to collide with the first collision rubber 8 and the second collision rubber 9, and earthquake energy is consumed through plastic deformation of the first collision rubber 8 and the second collision rubber 9.
The steel springs 3 between the steel baffle side plate 27 and the steel baffle web 2 are composed of small springs which are uniformly distributed. So can increase lifting surface to reduce 2 pressures of steel baffle web, make web 2 safer. Meanwhile, the transverse displacement can be limited, and seismic energy is converted into energy absorbed by compression and extension of the spring.
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 (5)
1. The utility model provides a many friction damping power consumption antidetonation dog structure that resets which characterized in that: the steel corbel anti-seismic device comprises a steel corbel (1), a friction cylinder (5), a corrugated inner wall (13), collision rubber (8), anti-seismic springs (3) and a straight rod sliding structure (7), wherein the steel corbel (1) is fixed above the side wall of a pier (23) through a steel corbel bolt (18), a fixed top plate (25) is arranged at the top of the steel corbel (1), the corrugated inner wall (13) is fixed on the upper part of the fixed top plate (25), and steel baffle side plates (27) positioned on two sides of the fixed top plate (25) are connected with a steel baffle web plate (2) on the outer side through the steel springs (3); fixing support (16) are fixed in girder (21) bottom through bolt (12), fixing support (16) bottom is fixed with rotating support (4), two the outer end of straight-bar sliding structure (7) is fixed in both sides respectively the inner wall top of steel baffle curb plate (27), its inner end pass through second steel spring (10) with rotating support (4) are connected, friction drum (5) are connected through the below of connecting rod with rotating support (4).
2. The multi-friction damping energy-dissipating reset anti-seismic stop structure according to claim 1, wherein: the straight rod sliding structure (7) comprises a connecting block (71), a sliding straight rod (72), first collision rubber (8) and second collision rubber (9), the connecting block (71) is of a square structure, the outer end of the connecting block is fixed above the inner wall of the steel baffle side plate (27), the inner end of the connecting block is connected with the outer end of the sliding straight rod (72), and the inner end of the sliding straight rod (72) is connected with the rotating support (4) through a second steel spring (10); the first collision rubber (8) and the second collision rubber (9) are fixed at the bottom of the outer end of the connecting block (71) in a semi-cylindrical structure; the lowest point of the second collision rubber (9) is lower than the lowest point of the first collision rubber (8).
3. The multi-friction damping energy-dissipating reset anti-seismic stop structure according to claim 2, wherein: the rotating support (4) is fixed at the bottom of the fixed support (16) in an inverted triangle support structure; the two friction cylinders (5) are respectively connected with the lower part of the rotating support (4) through connecting rods, and the top parts of the connecting rods are hinged with the rotating support (4); the surface of the friction cylinder (5) is provided with a plurality of semi-cylindrical friction blocks (6) at equal intervals.
4. A multi-friction damping energy-dissipating reset anti-seismic stop structure according to claim 3, wherein: steel corbel (1) includes steel corbel roof (15), steel corbel curb plate (17), steel corbel web (24) and steel corbel bottom plate (14), steel corbel curb plate (17) are through a plurality of steel corbel bolt (18) fixed connection on pier (23) lateral wall, steel corbel curb plate (17) one side is located to steel corbel roof (15) and steel corbel bottom plate (14) level, and vertical steel corbel web (24) that set up two parallels between the two, steel corbel web (24) are connected in steel corbel curb plate (17) one side.
5. The multi-friction damping energy-consumption reset anti-seismic stop structure according to claim 4, wherein: the bottom of the steel baffle plate web (2) is fixed on a lower fixing plate (26), the lower fixing plate (26) is connected with a steel corbel top plate (15) through a fixing bolt (11), a concave isosceles trapezoid groove is formed at the top of the corrugated inner wall (13), a plurality of semi-cylindrical protrusions are arranged on the upper surface of the corrugated inner wall at equal intervals, and the surface of the friction cylinder (5) is in contact with the upper surface of the corrugated inner wall (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110593026.1A CN113265939B (en) | 2021-05-28 | 2021-05-28 | Multi-friction damping energy dissipation reset anti-seismic stop block structure |
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| CN202110593026.1A CN113265939B (en) | 2021-05-28 | 2021-05-28 | Multi-friction damping energy dissipation reset anti-seismic stop block structure |
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| CN113265939A true CN113265939A (en) | 2021-08-17 |
| CN113265939B CN113265939B (en) | 2024-10-11 |
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Cited By (2)
| 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 |
| CN114108449A (en) * | 2021-11-24 | 2022-03-01 | 重庆交通大学 | Friction sliding energy consumption type bridge damping device for high-speed rail |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007063961A (en) * | 2005-08-30 | 2007-03-15 | Shunichiro Hanzawa | Aseismatic structure of existing multi-span bridge for stability by inelastic collision with bridge abutment |
| WO2019024552A1 (en) * | 2017-08-04 | 2019-02-07 | 东南大学 | Self-resetting, friction pendulum three-dimensional seismic damping and isolation bearing |
| CN111827086A (en) * | 2020-07-06 | 2020-10-27 | 南昌大学 | Buffering energy-consumption type bridge anti-seismic stop block capable of rotating along bridge direction |
| CN112267371A (en) * | 2020-09-10 | 2021-01-26 | 南昌大学 | Saw-type gear wheel rotation buffering energy-consumption type anti-seismic stop block structure |
| CN217733721U (en) * | 2021-05-28 | 2022-11-04 | 南昌大学 | Multi-friction damping energy dissipation reset anti-seismic stop block structure |
-
2021
- 2021-05-28 CN CN202110593026.1A patent/CN113265939B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007063961A (en) * | 2005-08-30 | 2007-03-15 | Shunichiro Hanzawa | Aseismatic structure of existing multi-span bridge for stability by inelastic collision with bridge abutment |
| WO2019024552A1 (en) * | 2017-08-04 | 2019-02-07 | 东南大学 | Self-resetting, friction pendulum three-dimensional seismic damping and isolation bearing |
| CN111827086A (en) * | 2020-07-06 | 2020-10-27 | 南昌大学 | Buffering energy-consumption type bridge anti-seismic stop block capable of rotating along bridge direction |
| CN112267371A (en) * | 2020-09-10 | 2021-01-26 | 南昌大学 | Saw-type gear wheel rotation buffering energy-consumption type anti-seismic stop block structure |
| CN217733721U (en) * | 2021-05-28 | 2022-11-04 | 南昌大学 | Multi-friction damping energy dissipation reset anti-seismic stop block structure |
Non-Patent Citations (1)
| Title |
|---|
| 刘珺;: "波形钢腹板连续梁桥减隔震设计研究", 中国水运(下半月), no. 05, 15 May 2020 (2020-05-15) * |
Cited By (2)
| 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 |
| CN114108449A (en) * | 2021-11-24 | 2022-03-01 | 重庆交通大学 | Friction sliding energy consumption type bridge damping device for high-speed rail |
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