CN211472138U - Gear type bridge damping structure - Google Patents
Gear type bridge damping structure Download PDFInfo
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- CN211472138U CN211472138U CN201922479779.0U CN201922479779U CN211472138U CN 211472138 U CN211472138 U CN 211472138U CN 201922479779 U CN201922479779 U CN 201922479779U CN 211472138 U CN211472138 U CN 211472138U
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- elastic supporting
- supporting part
- upper elastic
- gear
- force transmission
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- 238000013016 damping Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000035939 shock Effects 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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Abstract
The utility model discloses a gear type bridge damping structure, which comprises a force transmission piece, a damping piece and a damping piece, wherein the force transmission piece is arranged along the longitudinal bridge direction; the buffer resetting assembly comprises an upper elastic supporting part and a lower elastic supporting part which are arranged in pairs, wherein the upper elastic supporting part is connected with the main beam, the lower elastic supporting part is connected with the cover beam, and the upper elastic supporting part and the lower elastic supporting part are arranged at intervals to form a reaction cavity for accommodating the force transmission part; the middle of the reaction cavity is large, and the two sides of the reaction cavity are small, so that when the main beam drives the upper elastic supporting part to generate transverse displacement, the force transmission part moves along the surface of the reaction cavity to press the upper elastic supporting part and the lower elastic supporting part to generate deformation, and the main beam is reset. The utility model discloses simple structure, low in cost, construction are swift, the maintenance is changed conveniently, not only can restrict the girder and take place lateral displacement, can make the girder independently reset moreover, have effectively improved bridge life, have ensured the current safety of people's car, have good engineering application prospect.
Description
Technical Field
The utility model belongs to the technical field of the bridge antidetonation shock attenuation technique and specifically relates to a gear type bridge shock attenuation structure is related to.
Background
With the development of highway bridge technology, the requirement on bridge shock absorption is higher and higher, and particularly in areas with frequent earthquakes, the bridge shock absorption is very important. When the earthquake takes place, if do not have sufficient antidetonation or shock-absorbing measure, great lateral displacement will take place for upper portion girder receives the damage, has the roof beam risk of falling when serious, directly threatens the driving safety of vehicle on the bridge. The existing bridge damping structure is mainly considered from the aspect of restraining the transverse displacement of the main beam, and can only restrain the transverse displacement of the main beam to a certain extent; once earthquake happens, the main beam cannot recover to the original position after being transversely displaced, and certain influence is caused on the subsequent use of the bridge. To some extent, the bridge with the displaced main girder is a bridge with potential safety hazard.
Disclosure of Invention
The utility model provides a gear type bridge shock attenuation structure, aim at solve current bridge shock attenuation structure and only can restrict the girder and take place lateral displacement and can not make the girder problem that independently resets.
In order to achieve the above purpose, the utility model can adopt the following technical proposal:
gear type bridge shock attenuation structure, include
A force transmission piece arranged along the longitudinal bridge direction;
the buffer resetting assembly comprises an upper elastic supporting part and a lower elastic supporting part which are arranged in pairs, wherein the upper elastic supporting part is connected with the main beam, the lower elastic supporting part is connected with the cover beam, and the upper elastic supporting part and the lower elastic supporting part are arranged at intervals to form a reaction cavity for accommodating the force transmission part;
the middle of the reaction cavity is large, and the two sides of the reaction cavity are small, so that when the main beam drives the upper elastic supporting part to generate transverse displacement, the force transmission part moves along the surface of the reaction cavity to press the upper elastic supporting part and the lower elastic supporting part to generate deformation, and the main beam is reset.
The force transmission piece is a spline shaft; the structure of the upper elastic supporting part is the same as that of the lower elastic supporting part, the upper elastic supporting part and the lower elastic supporting part are both composed of a steel shell and an elastic buffering core body filled in the steel shell, a toothed plate layer meshed with the spline shaft is arranged on the steel shell, and the cross section of the toothed plate layer is of a V-shaped structure.
Two rows of first dustproof hairbrushes arranged along the bridge length direction are connected to the lower edge of the upper elastic supporting piece.
The upper elastic supporting part and the main beam are connected with the lower elastic supporting part and the cover beam through vertically arranged fixing bolts.
And the lower elastic supporting part is provided with a pair of end baffles, and each end baffle is connected with the end part of the force transmission part through an elastic buffer part.
The end baffle is connected with the lower elastic supporting piece through a fixing bolt horizontally arranged.
The elastic buffer piece is a return spring.
The end baffle covers the outer side of the reaction cavity, and a second dustproof brush is arranged on the upper edge of the end baffle.
The buffering reset assembly is positioned between the bridge supports.
The utility model provides a gear type bridge shock attenuation structure need not to change the original structural system of bridge, can conveniently install between girder and bent cap, and its simple structure, low in cost, construction are swift, the maintenance is changed conveniently, not only can restrict the girder and take place lateral displacement, can make the girder independently reset moreover, have effectively improved bridge life, have ensured the current safety of people's car, have good engineering application prospect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
3 fig. 3 2 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3
Fig. 3 is a schematic view of the end stop arrangement of fig. 1.
Fig. 4 is a schematic view of the installation structure of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solutions of the present invention and are described in detail, but the present invention is not limited to the following embodiments.
As shown in FIGS. 1-4, the shock absorbing structure for a gear-type bridge of the present invention comprises a force transmitting member and a buffering and restoring member which are engaged with each other.
Specifically, the force transmission piece is a spline shaft 1 arranged along the longitudinal bridge direction, the outer diameter of the spline shaft 1 is at least 10cm, the middle part of the spline shaft can be made into a hollow shape, and the inner diameter of the spline shaft is 0-20 cm; the buffering reset assembly comprises an upper elastic supporting part 2 and a lower elastic supporting part 3 which are arranged in pairs, wherein the upper elastic supporting part 2 is connected with the main beam M, the lower elastic supporting part 3 is connected with the cover beam N, and the upper elastic supporting part 2 and the lower elastic supporting part 3 are arranged at intervals to form a reaction force cavity 4 which is large in the middle and small in two sides and is used for accommodating the spline shaft 1.
The upper elastic supporting part 2 and the lower elastic supporting part 3 have the same structure and are both composed of a steel shell and an elastic buffer core filled in the steel shell. Taking the elastic support member 2 as an example, the top surface of the steel shell 2.1 is flush with the lower surface of the main beam M, so that the two are firmly connected through the vertical fixing bolt 5; the bottom surface of the steel shell 2.1 is of a V-shaped cross section structure, the shortest distance between the bottom surface and the top surface is at least 3cm, the longest distance is at least 10cm, and a toothed plate layer 2.2 capable of being meshed with the spline shaft 1 is arranged on the surface of the bottom surface; the steel shell 2.1 is filled with an elastic buffer core 2.3 made of elastic rubber or elastic fiber and other materials. When the bottom surface of the upper elastic supporting part 2 and the top surface of the lower elastic supporting part 3 are oppositely arranged, the formed reaction force cavity 4 has a large middle space and a small space at two sides, so that the spline shaft 1 is not extruded when the bridge is in a normal state; when the external environment changes (earthquake occurs, etc.), the main beam M drives the upper elastic support 2 to transversely displace, and the spline shaft 1 transversely moves along the counter-force cavity 4 under the traction action of the toothed plate layer 2.2. Because the upper and lower elastic supporting parts 2 and 3 are transversely staggered, the accommodating space of the spline shaft 1 is reduced, the transverse displacement is restrained, and the moving speed is slowed down, so that the damping function of the utility model is exerted, and the beam falling risk of the main beam M is effectively reduced; simultaneously, the shell and the core pressurized of upper and lower elastic support part 2, 3 produce deformation, because the elastic buffering core has the elastic recovery ability, it produces reverse thrust to integral key shaft 1, make girder M reach the purpose in automatic recovery original position along with the reverse roll of integral key shaft 1, this in-process the utility model discloses fully consumed seismic energy, effectively played the cushioning effect.
In order to prevent the spline shaft 1 from falling off the gear plate layers of the upper and lower elastic supporting members 2 and 3 when the main beam M moves longitudinally, a pair of end baffles 7 are mounted at two ends of the lower elastic supporting member 3 through a plurality of horizontal fixing bolts 6, and each end baffle 7 is connected with the end of the spline shaft 1 through an elastic buffer member such as a return spring 8. When the main beam M drives the upper elastic supporting part 2 to longitudinally displace, the spline shaft 1 can move along with the upper elastic supporting part 2, the return springs 8 at the two ends of the spline shaft are compressed/stretched, and finally the spline shaft 1 longitudinally moves along the grooves of the upper elastic supporting part 2 and the lower elastic supporting part 3 and restores to the original position, so that the normal damping effect of the spline shaft is ensured.
The upper edge of the end baffle 7 is parallel to the lower edge of the upper elastic support member 2, and keeps a distance of about 2cm with the lower edge of the upper elastic support member 2, the upper edge of the end baffle 7 is also connected with a second dustproof brush 9 by bonding or bolts, the second dustproof brush 9 vertically extends to the upper part of the upper elastic support member 2, the length is about 5cm, the end baffle 7 and the second dustproof brush 9 can cover the outer side of the counter-force cavity 4 when the bridge is in a normal state, so that the dustproof effect is achieved, the lubrication between the internal structural members is kept, when the upper elastic support member 2 longitudinally moves along with the main beam M, the end baffle 7 does not collide with the upper elastic support member 2, and the dustproof brush 9 is tightly attached to the bottom of the upper elastic support member 2 through the bending deformation of the dustproof brush 9, so that the dustproof effect is achieved.
In addition, two rows of first dustproof brushes 10 with the length of about 5-10 cm are arranged at the lower edges of two sides of the steel shell 2.1 (namely the thicker edges in the V-shaped cross section structure) in the upper elastic supporting piece 2 along the bridge length direction, and the first dustproof brushes 10 are fixed on the steel shell 2.1 through bonding or bolt connection and vertically extend downwards to the lower elastic supporting piece 3 to play a dustproof role.
The utility model discloses be located between the support of girder M bottom both sides usually, neither influence the normal work of bridge, be convenient for again the utility model discloses a construction installation makes its performance cushioning effect.
Claims (9)
1. The utility model provides a gear type bridge shock attenuation structure which characterized in that: comprises that
A force transmission piece arranged along the longitudinal bridge direction;
the buffer resetting assembly comprises an upper elastic supporting part and a lower elastic supporting part which are arranged in pairs, wherein the upper elastic supporting part is connected with the main beam, the lower elastic supporting part is connected with the cover beam, and the upper elastic supporting part and the lower elastic supporting part are arranged at intervals to form a reaction cavity for accommodating the force transmission part;
the middle of the reaction cavity is large, and the two sides of the reaction cavity are small, so that when the main beam drives the upper elastic supporting part to generate transverse displacement, the force transmission part moves along the surface of the reaction cavity to press the upper elastic supporting part and the lower elastic supporting part to generate deformation, and the main beam is reset.
2. The gear-type bridge damping structure according to claim 1, wherein: the force transmission piece is a spline shaft; the structure of the upper elastic supporting part is the same as that of the lower elastic supporting part, the upper elastic supporting part and the lower elastic supporting part are both composed of a steel shell and an elastic buffering core body filled in the steel shell, a toothed plate layer meshed with the spline shaft is arranged on the steel shell, and the cross section of the toothed plate layer is of a V-shaped structure.
3. The gear-type bridge damping structure according to claim 2, wherein: two rows of first dustproof hairbrushes arranged along the bridge length direction are connected to the lower edge of the upper elastic supporting piece.
4. The gear-type bridge damping structure according to claim 1, wherein: the upper elastic supporting part and the main beam are connected with the lower elastic supporting part and the cover beam through vertically arranged fixing bolts.
5. The gear-type bridge damping structure according to claim 1, wherein: and the lower elastic supporting part is provided with a pair of end baffles, and each end baffle is connected with the end part of the force transmission part through an elastic buffer part.
6. The gear-type bridge damping structure according to claim 5, wherein: the end baffle is connected with the lower elastic supporting piece through a fixing bolt horizontally arranged.
7. The gear-type bridge damping structure according to claim 5, wherein: the elastic buffer piece is a return spring.
8. The gear-type bridge damping structure according to claim 5, wherein: the end baffle covers the outer side of the reaction cavity, and a second dustproof brush is arranged on the upper edge of the end baffle.
9. The gear-type bridge damping structure according to any one of claims 1 to 8, wherein: the buffering reset assembly is positioned between the bridge supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479779.0U CN211472138U (en) | 2019-12-31 | 2019-12-31 | Gear type bridge damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479779.0U CN211472138U (en) | 2019-12-31 | 2019-12-31 | Gear type bridge damping structure |
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| Publication Number | Publication Date |
|---|---|
| CN211472138U true CN211472138U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922479779.0U Active CN211472138U (en) | 2019-12-31 | 2019-12-31 | Gear type bridge damping structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847016A (en) * | 2019-12-31 | 2020-02-28 | 河南省交通规划设计研究院股份有限公司 | Gear type bridge damping structure |
-
2019
- 2019-12-31 CN CN201922479779.0U patent/CN211472138U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847016A (en) * | 2019-12-31 | 2020-02-28 | 河南省交通规划设计研究院股份有限公司 | Gear type bridge damping structure |
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