CN216973079U - Deck beam-arch combined bridge anti-seismic system suitable for high-intensity seismic areas - Google Patents
Deck beam-arch combined bridge anti-seismic system suitable for high-intensity seismic areas Download PDFInfo
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- CN216973079U CN216973079U CN202121477140.XU CN202121477140U CN216973079U CN 216973079 U CN216973079 U CN 216973079U CN 202121477140 U CN202121477140 U CN 202121477140U CN 216973079 U CN216973079 U CN 216973079U
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Abstract
The utility model discloses a top-supported beam-arch combined bridge anti-seismic system suitable for a high-intensity seismic region, which comprises an upper beam body, a support and a bridge abutment, wherein the support is positioned between the upper beam body and the bridge abutment, the upper beam body is supported on the bridge abutment through the support, the top-supported beam-arch combined bridge further comprises a viscous damper, one end of the viscous damper is connected to the bridge abutment, and the other end of the viscous damper is connected to the upper beam body. Through set up viscous damper between abutment and upper portion roof beam body, absorb and consume the impact energy of earthquake to the bridge through viscous damper furthest, alleviated the impact and the destruction of earthquake to the deck beam-arch combination bridge greatly, and then alleviateed the adverse effect of earthquake action to the bridge. And the stress condition of the pier can be improved through the viscous damper, so that the bearing capacity requirement of the pier foundation can be met while the middle pier rigidity is reduced to improve the anti-seismic performance, the quantity of pier foundation engineering can be greatly reduced due to the reduction of the middle pier rigidity, and the bridge economy is improved.
Description
Technical Field
The utility model relates to the field of bridge earthquake resistance, in particular to a deck beam-arch combined bridge earthquake-resistant system suitable for high-intensity earthquake areas.
Background
Earthquake as a common natural disaster brings great threat to the life and property safety of people, and the safety problem of bridge engineering in earthquake disasters, particularly in high-intensity earthquake areas, is always the key point of attention of bridge engineers. The deck beam-arch combined bridge has the advantages of good economic performance, large bearing capacity, light structure and the like, and is widely applied, but in a high-seismic-intensity area, the seismic response is large, the seismic design of the bridge is difficult, and the bridge type is less applied in the high-seismic-intensity area. In the conventional design, the bridge structure has high rigidity, a small period and large earthquake response due to the high rigidity of the middle pier foundation, and the adverse effect of the earthquake on the bridge is particularly obvious in a high-intensity earthquake region; reducing the rigidity of the middle pier foundation reduces the horizontal bearing capacity and is difficult to meet the requirement of bearing capacity. Therefore, the seismic performance is improved simply in a mode of reducing the rigidity of the middle pier, the requirement of bearing capacity is difficult to meet with less pier foundation engineering quantity and higher bridge economy.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects that a deck beam-arch combined bridge in the prior art is large in seismic response and difficult in bridge seismic design in a high-seismic intensity area, and provides a deck beam-arch combined bridge seismic system suitable for the high-seismic intensity area.
The utility model solves the technical problems through the following technical scheme:
the utility model provides a bolster formula roof beam encircles combination bridge for high intensity seismic region, its includes upper portion roof beam body, support and abutment, and the support is located between upper portion roof beam body and the abutment, and upper portion roof beam body passes through the support and supports on the abutment, and bolster formula roof beam encircles combination bridge antidetonation system still includes viscous damper, and the one end of viscous damper is connected in the abutment, and the other end of viscous damper is connected in upper portion roof beam body.
In this scheme, through set up viscous damper between abutment and upper portion roof beam body, absorb and consume the impact energy of earthquake to the bridge through viscous damper furthest, alleviated the earthquake greatly and arched impact and the destruction of combining the bridge of formula roof beam that holds, and then alleviateed the adverse effect of earthquake action to the bridge. And the stress condition of the pier can be improved through the viscous damper, so that the bearing capacity requirement of the pier foundation can be met while the middle pier rigidity is reduced to improve the anti-seismic performance, the quantity of pier foundation engineering can be greatly reduced due to the reduction of the middle pier rigidity, and the bridge economy is improved.
Preferably, the upper beam body is hinged to the abutment by a viscous damper.
Preferably, one end of the viscous damper is connected to a sidewall of the abutment, and the other end of the viscous damper is connected to a bottom of the upper beam.
Preferably, the viscous damper is hinged at both ends to the abutment and the upper beam body, respectively.
Preferably, both ends of the upper beam body in the length direction are provided with bridge abutments.
Preferably, the deck-type arched girder composite bridge further comprises a middle pier arranged in the length direction of the upper girder body, and the middle pier is located between the two abutment platforms.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the utility model.
The positive progress effects of the utility model are as follows: the through viscous damper is arranged between the bridge abutment and the upper beam body to dissipate seismic energy and improve the stress condition of the bridge pier at the same time, so that the bearing capacity requirement of the middle pier foundation is met; the stress is clear, the structure is simple, the construction is convenient, the cost is lower, and the wide popularization is convenient; the anti-seismic requirements of the beam-arch combined bridge with different spans and different pier heights in a high-intensity earthquake area can be met by changing the parameters of the viscous dampers, the number of the viscous dampers and the rigidity of the middle pier foundation.
Drawings
Fig. 1 is a schematic structural diagram of a deck-type beam-arch combined bridge anti-seismic system suitable for high-intensity seismic areas according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural view of a viscous damper and an abutment in a deck-supported arch-girder combined bridge seismic system according to an embodiment of the present invention after the viscous damper and an upper girder are connected.
Description of reference numerals:
Abutment 2
Viscous damper 3
Support 4
Foundation 5 of middle pier
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 to 2, the present embodiment provides a deck-type arch-beam composite bridge anti-seismic system for a high-intensity seismic region, which includes an upper beam 1, a support 4 and a bridge abutment 2, wherein the support 4 is located between the upper beam 1 and the bridge abutment 2, the upper beam 1 is supported on the bridge abutment 2 through the support 4, the deck-type arch-beam composite bridge further includes a viscous damper 3, one end of the viscous damper 3 is connected to the bridge abutment 2, and the other end of the viscous damper 3 is connected to the upper beam 1.
Through set up viscous damper 3 between abutment 2 and upper portion roof beam body 1, absorb and consume the impact energy of earthquake to the bridge through viscous damper 3 furthest, alleviated the impact and the destruction of earthquake to the deck beam-arch combination bridge greatly, and then alleviateed the adverse effect of earthquake action to the bridge. And the stress condition of the pier can be improved through the viscous damper, so that the bearing capacity requirement of the pier foundation can be met while the middle pier rigidity is reduced to improve the anti-seismic performance, the quantity of pier foundation engineering can be greatly reduced due to the reduction of the middle pier rigidity, and the bridge economy is improved.
Wherein, the upper beam body 1 is hinged with the bridge abutment 2 through a viscous damper 3. Specifically, one end of the viscous damper 3 is connected to the side wall of the abutment 2, and the other end of the viscous damper 3 is connected to the bottom of the upper beam body 1. Two ends of the viscous damper 3 are respectively hinged with the bridge abutment 2 and the upper beam body 1.
In the present embodiment, the bridge abutment 2 is provided below both ends of the upper beam body 1 in the longitudinal direction. The upper-bearing beam-arch combined bridge also comprises a middle pier arranged in the length direction of the upper beam body 1, and the middle pier is positioned between the two bridge abutments 2. The number of the middle piers is not limited, and may be one, two, or a plurality of, that is, a two-span bridge, a three-span bridge, or a bridge with more than three spans. For the reduction of the rigidity of the foundation of the middle pier, the rigidity of the foundation below the middle pier can be reduced by adopting the modes of reducing the diameter of a pile foundation below the middle pier or changing the arrangement of the pile foundation and the like. Certainly, for different bridges, the span and pier height are different, and the requirement for reducing the rigidity of the middle pier is also different.
Therefore, for the type and the number of the viscous dampers 3, the seismic response of the deck-girder-arch composite bridge at the rigidity is calculated according to the rigidity of the foundation 5 of the middle pier. The earthquake-resistant requirements of the through-type beam-arch combined bridge with different spans and different pier heights in a high-intensity earthquake area can be met by changing the parameters and the number of the viscous dampers 3 and the rigidity of the foundation 5 of the middle pier. The upper bearing type beam-arch combined bridge with the structural form has the advantages of clear stress, simple structure, convenient construction, lower cost and wide application.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (6)
1. The utility model provides a bolster formula roof beam encircles combination bridge antidetonation system suitable for high intensity seismic region, its characterized in that, it includes the upper portion roof beam body, support and abutment, the support is located the upper portion roof beam body with between the abutment, the upper portion roof beam body passes through the support supports on the abutment, bolster formula roof beam encircles combination bridge antidetonation system still includes viscous damper, viscous damper's one end connect in the abutment, viscous damper's the other end connect in the upper portion roof beam body.
2. The deck-arch unit bridge earthquake proofing system as claimed in claim 1, wherein said upper beam is hinged to said abutment by said viscous damper.
3. The deck-arch unit bridge earthquake-resistant system as defined in claim 2, wherein said viscous damper is connected at one end thereof to a side wall of said bridge abutment and at the other end thereof to a bottom of said upper beam.
4. The deck-arch unit bridge earthquake-resistant system as defined in claim 3, wherein said viscous damper is hinged at both ends to said abutment and said upper beam body.
5. An earthquake-resistant system of a deck-type beam-arch combined bridge suitable for high-intensity earthquake areas as claimed in any one of claims 1 to 4, wherein bridge abutments are arranged below both ends of the upper beam body in the length direction.
6. The deck-arch composite bridge earthquake-resistant system as claimed in claim 5, wherein said deck-arch composite bridge earthquake-resistant system further comprises a middle pier disposed in a length direction of said upper beam body, said middle pier being located between two of said abutments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121477140.XU CN216973079U (en) | 2021-06-30 | 2021-06-30 | Deck beam-arch combined bridge anti-seismic system suitable for high-intensity seismic areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121477140.XU CN216973079U (en) | 2021-06-30 | 2021-06-30 | Deck beam-arch combined bridge anti-seismic system suitable for high-intensity seismic areas |
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| Publication Number | Publication Date |
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| CN216973079U true CN216973079U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121477140.XU Active CN216973079U (en) | 2021-06-30 | 2021-06-30 | Deck beam-arch combined bridge anti-seismic system suitable for high-intensity seismic areas |
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| CN (1) | CN216973079U (en) |
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2021
- 2021-06-30 CN CN202121477140.XU patent/CN216973079U/en active Active
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