CN210420837U - Beam bridge provided with displacement locking seismic isolation and reduction device - Google Patents
Beam bridge provided with displacement locking seismic isolation and reduction device Download PDFInfo
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- CN210420837U CN210420837U CN201921030757.XU CN201921030757U CN210420837U CN 210420837 U CN210420837 U CN 210420837U CN 201921030757 U CN201921030757 U CN 201921030757U CN 210420837 U CN210420837 U CN 210420837U
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Abstract
The utility model discloses a set up displacement locking and subtract vibration isolation device's beam bridge, including girder and pier group, the rigid coupling has longitudinal sliding support, displacement locking damper between pier group and the girder, wherein displacement locking damper includes displacement type attenuator, displacement locking subassembly and connecting piece, just the one end and the displacement type attenuator of connecting piece are connected, and its other end passes displacement locking subassembly and slides in displacement locking subassembly, and displacement type attenuator and displacement locking subassembly are connected with pier group, girder respectively. The utility model has the advantages that when the relative displacement between the pier beams is small, the displacement type damper does not work and consumes energy; when the relative displacement between the pier beams is large, the displacement type damper only starts to work to consume energy, and further the fatigue damage of the displacement type damper is reduced.
Description
Technical Field
The utility model relates to a civil engineering technical field especially relates to a set up displacement locking and subtract vibration isolation device's beam bridge.
Background
When a strong shock occurs, a large relative displacement can be generated between the pier and the beam of the bridge, which causes damage to the bridge structure and increases difficulty in later bridge maintenance. The seismic isolation and reduction design is considered to be a design for effectively reducing damage of an earthquake to a bridge structure, and the seismic isolation and reduction bridge structure is characterized in that relative displacement between pier beams is allowed firstly, and then a displacement type damper is installed by utilizing the relative displacement between the pier beams so as to achieve the purposes of energy consumption and shock absorption. In a bridge structure, due to the action of temperature and vehicle load, relative displacement can be generated between piers and beams, and particularly when the temperature difference is large, the relative displacement between the piers and the beams is obvious.
The traditional displacement type damper is arranged between pier beams, and two ends of the traditional displacement type damper generate relative motion along with the relative motion of the pier beams, so that the displacement type damper is always in a working state, the fatigue damage of the displacement type damper can be increased by the relative motion, and once a strong earthquake arrives, the damping and energy dissipation effects of the displacement type damper can be reduced. The damping force generated in daily use is not beneficial to the bridge structure and should be avoided as much as possible.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims to disclose a beam bridge provided with a displacement locking seismic isolation and reduction device, when the relative displacement between the pier beams is small, the displacement type damper does not work and consumes energy; when the relative displacement between the pier beams is large, the displacement type damper only starts to work to consume energy, and further the fatigue damage of the displacement type damper is reduced.
The utility model discloses a set up displacement locking and subtract beam bridge of isolation device that realizes through following technical scheme, including girder and pier group, the rigid coupling has longitudinal sliding support, displacement locking damper between pier group and the girder, wherein displacement locking damper includes displacement type attenuator, displacement locking subassembly and connecting piece, just the one end and the displacement type attenuator of connecting piece are connected, and its other end passes displacement locking subassembly and slides in displacement locking subassembly, and displacement type attenuator and displacement locking subassembly are connected with pier group, girder respectively.
Through the technical scheme, the main beam can allow the main beam and the bridge pier to generate relative displacement under the action of the longitudinal sliding support so as to realize shock insulation.
Further, pier group includes pier A and pier B, wherein is connected through longitudinal sliding support between pier A's the top and the girder, is connected through fixing support between pier B's the top and the girder, and displacement locking damper rigid coupling is between pier A's side and girder.
Through the technical scheme, in the simply supported beam bridge, the main beam can allow the beam bridge to displace under the action of the longitudinal sliding support so as to realize shock insulation; when the relative displacement between the pier beams is small, the displacement locking assembly is driven by the main beam, the main beam drives the displacement locking assembly to slide on the connecting piece, and the displacement type damper does not work; when the relative displacement between the pier beams is large, the relative displacement between the displacement locking assembly and the connecting piece reaches a limited displacement value, and the position of the connecting piece is locked by the displacement locking assembly, namely the displacement locking assembly and the connecting piece do not move relatively any more, so that the displacement type damper is started to generate energy dissipation and shock absorption effects on the beam bridge.
Further, pier group includes pier A and pier C that both sides were placed, the pier B of placing in the middle of, wherein is connected through vertical sliding support between pier A and pier C's the top and the girder, is connected through fixing support between pier B's the top and the girder, and displacement locking damper rigid coupling between pier A, pier C's side and girder, and the span that pier group and girder are connected is n stride structure (n is greater than or equal to 2).
Through the technical scheme, in the continuous beam bridge, the main beam can allow the beam bridge to displace under the action of the longitudinal sliding support so as to realize shock insulation; when the relative displacement between the pier beams is small, the displacement locking assembly is driven by the main beam, the main beam drives the displacement locking assembly to slide on the connecting piece, and the displacement type damper does not work; when the relative displacement between the pier beams is large, the relative displacement between the displacement locking assembly and the connecting piece reaches a limited displacement value, and the position of the connecting piece is locked by the displacement locking assembly, namely the displacement locking assembly and the connecting piece do not move relatively any more, so that the displacement type damper is started to generate energy dissipation and shock absorption effects on the beam bridge.
Furthermore, the displacement locking damping mechanism is arranged on the cable-stayed bridge, namely, the bridge pier group is replaced by a bridge tower combination, the bridge tower combination comprises bridge towers, one end of the displacement locking damping mechanism is fixedly connected with the main beam, the other end of the displacement locking damping mechanism is fixedly connected with the bridge towers, and the number of the bridge towers in the bridge tower combination is n (n is more than or equal to 2).
According to the technical scheme, the structure system of the cable-stayed bridge seismic isolation structure based on displacement locking is a floating or semi-floating body system, and longitudinal relative displacement can be generated between a bridge tower and a main beam; when the relative displacement between the tower beams is small, the displacement locking assembly is driven by the main beam, the main beam drives the displacement locking assembly to slide on the connecting piece, and the displacement type damper does not work; when the relative displacement between the tower beams is large, the relative displacement between the displacement locking assembly and the connecting piece reaches a limited displacement value, and the position of the connecting piece is locked by the displacement locking assembly, namely the displacement locking assembly and the connecting piece do not move relatively any more, so that the displacement type damper is started to generate energy dissipation and shock absorption effects on the beam bridge.
Further, the displacement locking damping mechanism is installed on the suspension bridge, namely, the bridge pier group is replaced by a bridge tower combination, the bridge tower combination comprises bridge towers, one end of the displacement locking damping mechanism is fixedly connected with the main beam, the other end of the displacement locking damping mechanism is fixedly connected with the bridge towers, and the number of the bridge towers in the bridge tower combination is n (n is more than or equal to 2).
By the technical scheme, based on the suspension bridge seismic isolation and reduction structure locked by displacement, longitudinal relative displacement can be generated between the main beam and the bridge tower, when the relative displacement between the tower beams is small, the displacement locking assembly is driven by the main beam, the main beam drives the displacement locking assembly to slide on the connecting piece, and the displacement type damper does not work; when the relative displacement between the tower beams is large, the relative displacement between the displacement locking assembly and the connecting piece reaches a limited displacement value, and the position of the connecting piece is locked by the displacement locking assembly, namely the displacement locking assembly and the connecting piece do not move relatively any more, so that the displacement type damper is started to generate energy dissipation and shock absorption effects on the beam bridge.
Furthermore, two ends of the connecting piece are fixedly connected with the pier group and the main beam through a hinge A and a hinge B respectively.
Through the technical scheme, one ends of the support hinges A and B are fixedly connected to the bridge pier and the main beam, and the other ends of the support hinges A and B are rotatably connected with the connecting piece through the pin shaft, so that the connecting piece can conveniently slide in the displacement locking assembly.
Further, the connecting member is a rod member that is slidably connected.
Through above-mentioned technical scheme, the one end and the hinge A of member are fixed, and the other end of member runs through displacement locking subassembly to with displacement locking subassembly sliding connection, when taking place the macroseism promptly, the girder can take place the displacement under the effect of support, and the member can slide in displacement locking subassembly.
Further, a displacement limiter locked with the displacement locking assembly is arranged on the rod piece, namely when the relative displacement of the displacement limiter and the displacement locking assembly is between two displacement limit values, the connecting piece slides in the displacement locking assembly; when the relative displacement of the displacement limiter and the displacement locking component reaches two displacement limit values, the displacement locking component and the displacement limiter are fastened and fixed, so that the connecting piece is locked in the displacement locking component, and the displacement damper is started.
Through the technical scheme, the displacement locking assembly has positive and negative displacement limit values, and when the relative displacement between the displacement limiter and the displacement locking assembly is between the two displacement limit values, the rod piece freely slides in the displacement locking assembly; when the relative displacement of the displacement limiter and the displacement locking assembly reaches two displacement limit values, the displacement locking assembly and the displacement limiter are fastened and fixed, and then the rod piece is locked in the displacement limiting assembly, so that the displacement damper starts to work to realize the effect of energy dissipation and shock absorption on the main beam and the bridge pier
Preferably, the displacement-type damper is a metal displacement-type damper.
Through the technical scheme, the displacement type damper is a metal displacement type damper related to displacement, and is different from displacement type dampers related to speed, such as viscous liquid displacement type dampers.
Compared with the prior art, the utility model has the advantages of: on one hand, under the action of the longitudinal sliding support, the main beam can allow the main beam and the bridge pier to generate relative displacement so as to realize shock insulation; on the other hand, when the relative displacement between the abutments is small, the displacement type damper does not work and consumes energy; when the relative displacement between the abutments is large, the displacement type damper only starts to work and consume energy, and further the fatigue damage of the displacement type damper in daily use is reduced.
Drawings
Fig. 1 is a schematic structural view embodying the present invention;
FIG. 2 is a schematic structural view of the displacement lock damping mechanism of the present invention;
FIG. 3 is a schematic structural view showing that the longitudinal sliding support and the damping mechanism of the present invention are connected to the bridge respectively;
fig. 4 is a schematic structural view of the present invention showing that the rod structure is connected to the hinge a and the hinge B respectively;
FIG. 5 is a schematic view of the seismic isolation structure of the continuous beam bridge based on displacement locking of the utility model;
FIG. 6 is a schematic view of the vibration isolation structure of the cable-stayed bridge based on displacement locking of the utility model;
fig. 7 is that the utility model discloses a suspension bridge subtracts isolation structure schematic diagram based on displacement locking.
In the figure, 1, a main beam; 2. a pier group; 201. a bridge pier A; 202. a bridge pier B; 203. c, bridge piers; 3. a foundation; 4. a longitudinal sliding support; 5. a fixed support; 6. a displacement locking damping mechanism; 601. a displacement locking assembly; 602. a displacement-type damper; 603. a connecting member; 604. a hinge A; 605. a hinge B; 7. combining a bridge tower; 701. a bridge tower; 8. a main cable; 9. a sling; 10. side piers; 11. a pull rope.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a set up displacement locking subtracts seismic isolation device's beam bridge, as shown in figure 1, including girder 1 and the pier group 2 of rigid coupling on basis 3, wherein pier group 2 includes adjacent pier A201 and the pier B202 that sets up in girder 1 below, be connected through longitudinal sliding support 4 between the top of pier A201 and the girder 1, be connected through fixing support 5 between the top of pier B202 and the girder 1, and be provided with displacement locking damper 6 between the side of pier A201 and the girder 1, so that girder 1 is under the effect of longitudinal sliding support 4, allow to take place relative displacement between girder 1 and the pier A201 in order to realize the shock insulation.
As shown in fig. 1, 2 and 3, the displacement-locking shock-absorbing mechanism 6 includes a displacement-locking assembly 61, a displacement-type damper 602, and a connecting member 63 passing through the displacement-type damper 602 along the axial direction thereof, wherein one end of the connecting member 63 is fixedly connected to the abutment a21, and the other end thereof is slidably connected to the displacement-locking assembly 61; the longitudinal sliding support 4 enables the load on the main beam 1 to be transferred to the pier A201 through the vertical supporting effect of the longitudinal sliding support 4, and the longitudinal sliding support 4 allows longitudinal relative displacement to be generated between the main beam 1 and the pier A201, so that when strong shock occurs, shock insulation can be realized through the relative displacement of the main beam 1 and the pier A201; namely, in daily use, the pier A201 and the main beam 1 generate small relative displacement under the action of temperature and vehicle load, and the displacement locking component 601 and the connecting piece 603 generate relative sliding under the drive of the main beam 1; when strong earthquake acts, the relative displacement between the pier A201 and the main beam 1 is large, when the relative sliding between the displacement locking component 601 and the connecting piece 603 reaches a limited displacement value, the displacement locking component 601 locks the connecting piece 603, no relative movement occurs between the pier A201 and the main beam 1, and the displacement damper 602 is started to generate energy consumption to achieve the purpose of shock absorption.
As shown in fig. 3 and 4, one end of the displacement lock damper mechanism 6 is fixed to the pier a201 by a hinge a604, and the other end thereof is fixed to the main beam 1 by a hinge B605. The ends of the hinges a604 and B605 remote from the bridge pier a201 and the main beam 1 are pivotally connected to the connecting member 603 by a pin so that the connecting member 603 slides in the displacement lock assembly 601.
Further, as shown in fig. 3 and 4, the connecting member 603 is a rod structure having one end fixed to the hinge a604 and the other end slidably connected to the displacement lock assembly 601, and the rod structure is provided with a displacement limiter (not shown) locked to the displacement lock assembly 601 in the axial direction. When a strong shock occurs, because the displacement locking component 601 has positive and negative displacement limit values, when the relative displacement between the displacement limiter and the displacement locking component 601 is between the two displacement limit values, the rod structure freely slides in the displacement locking component 601; when the relative displacement between the displacement limiter and the displacement locking component 601 reaches two displacement limit values, the displacement locking component 601 and the displacement limiter are fastened and fixed, and then the rod structure is locked in the displacement limiting component 33, so that the displacement damper 602 starts to work to realize the effects of energy dissipation and shock absorption on the main beam 1 and the pier a 201.
On the basis of the scheme, as shown in fig. 1 and 5, the displacement locking shock absorption mechanism 6 is applied to a seismic isolation and reduction structure of a continuous beam bridge, the pier group 2 further comprises a pier C203 arranged adjacent to the pier B202, the top end of the pier C203 is connected with the main beam 1 through a longitudinal sliding support 4, and the displacement locking shock absorption mechanism 6 is arranged between the side surface of the pier C203 and the main beam 1; because the longitudinal sliding support 4 allows longitudinal relative displacement to be generated between the main beam 1 and the pier C203, when a strong shock occurs, the shock insulation can be realized by the relative displacement of the main beam 1 and the pier C203; on the basis of the scheme, the span of the connection between the pier group 2 and the main beam 1 is an n-span structure (n is more than or equal to 2), namely, the fixed support 5 is installed on the pier B202 in the middle, the longitudinal sliding supports 4 are installed on the piers A201 and C203 on two sides of the fixed support 5, and the displacement damping mechanism 6 is installed on the pier A201, the pier C203 and the main beam 1 which are provided with the longitudinal sliding supports 4.
On the basis of the scheme, as shown in fig. 1 and fig. 6, the displacement locking shock absorption mechanism 6 is applied to a seismic isolation and reduction structure of a cable-stayed bridge, the pier group 2 is replaced by a bridge tower combination 7, wherein the number of the bridge towers in the bridge tower combination 7 is n (n is more than or equal to 2), the bridge tower combination 7 comprises a bridge tower 701, the cable-stayed bridge comprises a bridge tower 701 fixedly connected to a foundation 3, a main beam 1 fixedly connected with the bridge tower 701, a guy cable 11 connecting the bridge tower 701 and the main beam 1, and an edge pier 10 fixedly connected to the end part of the main beam 1; referring to fig. 1 and 6, one end of the displacement lock damper mechanism 6 is fixed to the girder 1, and the other end thereof is fixed to the bridge tower 701.
In addition, due to the cable-stayed bridge seismic isolation structure based on displacement locking, the structural system is a floating or semi-floating body system (longitudinal relative displacement can be generated between the bridge tower 701 and the main beam 1), and one end of the displacement locking and damping mechanism 6 is fixedly connected with the main beam 1, and the other end of the displacement locking and damping mechanism is fixedly connected with the bridge tower 701.
On the basis of the above scheme, as shown in fig. 7, the displacement locking shock absorption mechanism 6 is applied to a suspension bridge seismic isolation structure, wherein the suspension bridge includes a bridge tower 701 fixedly connected to a foundation 3, a main beam 1 fixedly connected to the bridge tower 701, a main cable 8 fixedly connected to the main beam 1 and the bridge tower 701, a sling 9 fixedly connected between the main cable 8 and the main beam 1, and side piers 10 fixedly connected to both ends of the main beam 1, and the number of the bridge towers 701 is n (n is greater than or equal to 2).
In addition, due to the suspension bridge seismic isolation and reduction structure based on displacement locking, longitudinal relative displacement can be generated between the main beam 1 and the bridge tower 701, one end of the displacement locking and damping mechanism 6 is fixedly connected with the main beam 1, and the other end of the displacement locking and damping mechanism is fixedly connected with the bridge tower 701.
In addition to the above-described configuration, the displacement-type damper 602 is a displacement-related displacement-type damper 602 such as a metal displacement-type damper 602 or a friction-type displacement-type damper 602, and is different from the velocity-related displacement-type damper 602 such as a viscous liquid displacement-type damper 602.
On the basis of the scheme, the displacement locking damping mechanism 6 is not only suitable for continuous beam bridges, but also suitable for bridge structures such as simply supported beam bridges, suspension bridges, cable-stayed bridges and the like with relative displacement between a pier (or a bridge tower) and a main beam under the action of an earthquake; particularly for a long-span and long-span bridge, the applicability of the displacement damper 602 in the bridge-following direction can be effectively improved.
The above-described embodiments merely represent one or more embodiments of the present invention, which are described in greater detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (9)
1. The utility model provides a set up displacement locking and subtract vibration isolation device's girder bridge, includes girder (1) and pier group (2), its characterized in that, the rigid coupling has longitudinal sliding support (4), displacement locking damper (6) between pier group (2) and girder (1), wherein displacement locking damper (6) are including displacement type attenuator (602), displacement locking subassembly (601) and connecting piece (603), just the one end and the displacement type attenuator (602) of connecting piece (603) are connected, and its other end passes displacement locking subassembly (601) and slides in displacement locking subassembly (601), and displacement type attenuator (602) and displacement locking subassembly (601) are connected with pier group (2), girder (1) respectively.
2. The beam bridge provided with the displacement locking seismic isolation and reduction device is characterized in that the pier group (2) at least comprises two piers, a pier A (201) and a pier B (202), wherein the top end of the pier A (201) is connected with the main beam (1) through a longitudinal sliding support (4), the top end of the pier B (202) is connected with the main beam (1) through a fixed support (5), and a displacement locking damping mechanism (6) is fixedly connected between the side surface of the pier A (201) and the main beam (1).
3. The girder bridge provided with the displacement locking seismic isolation and reduction device according to claim 2, wherein when the displacement locking seismic isolation and reduction mechanism (6) is installed on a continuous girder bridge, the number of the piers included in the pier group (2) is three, namely, a pier A (201) and a pier C (203) which are placed at two sides and a pier B (202) which is placed in the middle, wherein the top ends of the pier A (201) and the pier C (203) are connected with the girder (1) through a longitudinal sliding support (4), the top end of the pier B (202) is connected with the girder (1) through a fixed support (5), the displacement locking seismic isolation and reduction mechanism (6) is fixedly connected between the side surfaces of the pier A (201) and the pier C (203) and the girder (1), the span of the pier group (2) connected with the girder (1) is an n-span structure, and n is more than or equal to 2.
4. The beam bridge provided with the displacement locking seismic isolation and reduction device as claimed in claim 2, wherein when the displacement locking seismic isolation mechanism (6) is installed on the cable-stayed bridge, namely the pier group (2) is replaced by a bridge-tower combination (7), the bridge-tower combination (7) comprises a bridge tower (701), one end of the displacement locking seismic isolation mechanism (6) is fixedly connected with the main beam (1), the other end of the displacement locking seismic isolation mechanism is fixedly connected with the bridge tower (701), the number of the bridge towers (701) in the bridge-tower combination (7) is n, and n is more than or equal to 2.
5. The beam bridge provided with the displacement locking seismic isolation and reduction device is characterized in that when the displacement locking seismic isolation mechanism (6) is installed on the suspension bridge, namely the pier group (2) is replaced by a bridge-tower combination (7), the bridge-tower combination (7) comprises a bridge tower (701), one end of the displacement locking seismic isolation mechanism (6) is fixedly connected with the main beam (1), the other end of the displacement locking seismic isolation mechanism is fixedly connected with the bridge tower (701), the number of the bridge towers (701) in the bridge-tower combination (7) is n, and n is larger than or equal to 2.
6. The beam bridge provided with the displacement locking seismic isolation and reduction device as claimed in claim 1, wherein two ends of the connecting piece (603) are fixedly connected with the pier group (2) and the main beam (1) through a hinge A (604) and a hinge B (605).
7. The bridge provided with the displacement locking seismic isolation reduction and isolation device as claimed in claim 6, wherein the connecting member (603) is a rod member which is connected in a sliding manner.
8. The bridge provided with the displacement locking seismic isolation and reduction device as claimed in claim 7, wherein the rod is provided with a displacement limiter locked with the displacement locking assembly (601), namely, when the relative displacement of the displacement limiter and the displacement locking assembly (601) is between two displacement limit values, the connecting piece (603) slides in the displacement locking assembly (601); when the relative displacement of the displacement limiter and the displacement locking assembly (601) reaches two displacement limit values, the displacement locking assembly (601) and the displacement limiter are fastened and fixed, so that the connecting piece (603) is locked in the displacement locking assembly (601) to start the displacement type damper (602).
9. The bridge provided with the displacement locking seismic isolation and reduction device as claimed in any one of claims 1 to 8, wherein the displacement type damper (602) is a metal displacement type damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921030757.XU CN210420837U (en) | 2019-07-04 | 2019-07-04 | Beam bridge provided with displacement locking seismic isolation and reduction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921030757.XU CN210420837U (en) | 2019-07-04 | 2019-07-04 | Beam bridge provided with displacement locking seismic isolation and reduction device |
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| CN210420837U true CN210420837U (en) | 2020-04-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158441A (en) * | 2019-07-04 | 2019-08-23 | 北京赛克振控科技有限公司 | A kind of beam bridge of setting displacement locking seismic isolation device |
| CN115948976A (en) * | 2022-12-19 | 2023-04-11 | 中交公路规划设计院有限公司 | Longitudinal combination toughness constraint system and method for large-span suspension bridge |
-
2019
- 2019-07-04 CN CN201921030757.XU patent/CN210420837U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158441A (en) * | 2019-07-04 | 2019-08-23 | 北京赛克振控科技有限公司 | A kind of beam bridge of setting displacement locking seismic isolation device |
| CN115948976A (en) * | 2022-12-19 | 2023-04-11 | 中交公路规划设计院有限公司 | Longitudinal combination toughness constraint system and method for large-span suspension bridge |
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