CN206418394U - A kind of main pier of railway High-pier and long-span continuous frigid frame bridge - Google Patents
A kind of main pier of railway High-pier and long-span continuous frigid frame bridge Download PDFInfo
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- CN206418394U CN206418394U CN201621468115.4U CN201621468115U CN206418394U CN 206418394 U CN206418394 U CN 206418394U CN 201621468115 U CN201621468115 U CN 201621468115U CN 206418394 U CN206418394 U CN 206418394U
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Abstract
The utility model is related to a kind of main pier of railway High-pier and long-span continuous frigid frame bridge, the main pier of rigid frame bridge is hollow pier, including a plurality of vertical muscle arranged along bridge pier body peripheral edge, the vertical muscle includes outside and indulges the vertical muscle of muscle and inner side, muscle is indulged in two a branch of arrangements in the outside, and it is in single arrangement that muscle is indulged in the inner side, and the vertical muscle in a plurality of single outside is indulged muscle doubling with inner side and bent up, the weak areas of plasticity hinge of stress is formed, the areas of plasticity hinge is located at the hollow weak location with solid boundary in bridge pier main body pier bottom.The utility model can bear huge seismic force without collapsing in earthquake, early discovery can be reached after damage position of the bridge pier under geological process, and shake can not only be specified, the purpose easily repaired, greatly save bridge pier and the reinforcing bar and concrete amount of pile foundation, good economical benefit；Engineering construction is smooth, method is simple, short time limit, saving engineering cost.
Description
Technical field
The utility model is related to a kind of main pier of rigid frame bridge, especially a kind of main pier of railway High-pier and long-span continuous frigid frame bridge, category
In railway anti-seismic field of engineering technology.
Background technology
《Code for sesmic design of railway engineering》（Version in 2009）, with " no damage in small earthquake, middle shake can be repaiied, no collapsing with strong earthquake " for antidetonation
Set up defences target, abandoned original intensity Seismic Design Method, introduced the concept of Ductility Design.
But from the point of view of existing research at present, the research for new specification antidetonation theory is few, most of railway engineering
Still it is designed with intensity Seismic Design Method, but high intensity Zone, especially 0.3g and 0.4g earthquake territories, high-block bridge
Seismic force suffered by the main pier of continuous rigid frame bridge is huge, if increase pier section and amount of reinforcement and the radical of pile foundation, meeting merely
Cause bridge pier integral rigidity to increase, cause the seismic force suffered by bridge pier further to increase, cause vicious circle, thus often not
Stress needs of the bridge pier under geological process can be met, while not only bridge pier arrangement of reinforcement is more, the waste of resource are caused, can not
Ensure damage position of the bridge under rarely occurred earthquake effect, the possible pier bottom of Partial Bridges is first destroyed, and also has some to send out
Raw pier top is first destroyed, or even bridge pier arrangement of reinforcement is more and cause pile foundation first to be destroyed, and in this case, is just unfavorable for protecting girder
And pile foundation, it is that post-disaster reconstruction causes difficulty while being also unfavorable for after shake finding and repairing in time damage.Therefore, it is badly in need of one at present
Kind is rational in infrastructure, can be achieved to realize the main pier structure of rigid frame bridge that pile foundation capacity protection and bridge pier are simply easily repaired.
Utility model content
In order to solve high intensity Zone, the problem of easily plastic failure occurs for continuous rigid frame bridge pier further realizes stake
The purpose that base capacity protection and bridge pier are simply easily repaired, the utility model provides a kind of railway High-pier and long-span continuous frigid frame bridge master
Pier, the main pier of rigid frame bridge is hollow pier, including a plurality of vertical muscle arranged along bridge pier body peripheral edge, and the vertical muscle is vertical including outside
Muscle is indulged in muscle and inner side, and muscle is indulged in two a branch of arrangements in the outside, and it is in single arrangement that muscle is indulged in the inner side, and a plurality of single outside is indulged
Muscle is indulged muscle doubling with inner side and bent up, and forms the weak areas of plasticity hinge of stress, and the areas of plasticity hinge is located at bridge pier main body pier bottom
The hollow weak location with solid boundary, so, no matter destruction first occurs for pier top or pile foundation is first destroyed, all easily timely
It was found that damage, by setting plastic hinge in the hollow weak location with solid boundary in pier bottom, can be dealt into after shake find in time and
Repair damage.
Further, inner side is indulged muscle and bent up laterally, is further bent to outside, with the single vertical a branch of arrangement shape of two, muscle
Muscle is indulged into outside, the wherein one inside lateral bending that muscle is indulged in the outside relative with the vertical muscle in inner side rises, and is further bent to form to inner side
Muscle is indulged in inner side, and the position of intermediate interdigitated is plastic hinge.
Further, the weak location also includes stirrup and lacing wire, it is ensured that the region allows occur moderate finite deformation, so that
The energy-dissipating device formed as spring, to offset the huge energy produced by geological process.
The beneficial effects of the utility model are as follows：
（1）, position by setting areas of plasticity hinge and construction, make high intensity Zone railway high-block bridge continuous rigid frame
Bridge can bear huge seismic force in earthquake can specify damage of the bridge pier under geological process without collapsing, not only
Early discovery can be reached behind position, and shake, the purpose easily repaired is a kind of novel process mode in railway anti-seismic field, right
The safety of life and property for ensureing the people in earthquake relief work has epochmaking social effect.
（2）, compared with conventional Intensity Design concept, set position and the construction of areas of plasticity hinge, be effective using prolonging
Property design, reach the purpose of protection bridge pier and pile foundation, greatly save bridge pier and the reinforcing bar and concrete amount of pile foundation, it is economical
Effect is fine.
（3）, engineering construction is smooth, method is simple, short time limit, save engineering cost.
Brief description of the drawings
Fig. 1 is the structural representation of the main pier of continuous rigid frame bridge.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the present embodiment is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only the example to a part of example of the utility model, rather than whole.Base
Embodiment in the utility model, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not paid
There is other embodiment, belong to the scope of the utility model protection.
As shown in figure 1, a kind of main pier of railway High-pier and long-span continuous frigid frame bridge of the present embodiment, the main pier of rigid frame bridge is sky
Heart pier, the bridge pier main body includes a plurality of vertical muscle arranged along bridge pier body peripheral edge, the vertical muscle include outside indulge muscle N1-2,
Muscle N3-2 is indulged in N1-5 and inner side, and muscle is indulged in two a branch of arrangements in the outside（N1-2 and N1-5）, muscle is indulged in single in the inner side
Arrangement（N3-2）, a plurality of single outside, which indulges muscle and inner side and indulges muscle doubling, to be bent up, and forms the areas of plasticity hinge of stress weakness, the modeling
Property hinge region be located at the hollow weak location with solid boundary in bridge pier main body pier bottom, preferably, muscle is indulged in inner side（N3-2）Outwards
Lateral bending rises, and is further bent to outside, with single vertical muscle（N1-2）Two a branch of arrangements form the vertical muscle in outside, and muscle is indulged with inner side
（N3-2）Indulge wherein one of muscle in relative outside（N1-5）Inside lateral bending is risen, and the vertical muscle in inner side is further bent to form to inner side,
The position of intermediate interdigitated is plastic hinge, and the weak location also includes stirrup and lacing wire.
The utility model is applicable to high intensity Zone, comprises the following steps：
（1）, set up three-dimensional finite element model to full-bridge carry out elasto-plastic time history analysis；
Full-bridge three-dimensional finite element model is set up, using elastic-plastic dynamic analysis method, antiseismic Calculation is carried out to bridge pier,
Obtain the constitutive relation of reinforcing bar, cover concrete without concrete on the inside of confined concrete constitutive relation, stirrup on the outside of stirrup
Confined concrete constitutive relation, the Clough hysteretic behaviors of the characteristic value of plastic hinge.
（2）, by the state of plastic hinge, judge the position that bridge pier is damaged first；
Continuous rigid frame bridge pier coping portion and bottom are possible to that for areas of plasticity hinge, bridge pier is simulated by using plastic hinge
The position of easy damaged under rarely occurred earthquake effect, judges the concrete position that bridge pier is damaged first.Result of calculation shows, continuously
Rigid frame bridge enters plasticity with solid section boundary position main pier pier top and pier bottom are hollow at first respectively.
（3）, the design that plastic hinge is carried out with solid section boundary position hollow to bridge pier pier bottom；
（4）, by layer segment reinforcing bar inside and outside bridge pier, doubling is bent up respectively, formed areas of plasticity hinge；
（5）, strengthen the region stirrup and lacing wire arrangement, formed energy-dissipating device；
（6）, pour bridge pier concrete.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (3)
1. a kind of main pier of railway High-pier and long-span continuous frigid frame bridge, the main pier of rigid frame bridge is hollow pier, including a plurality of along bridge pier master
The vertical muscle of body periphery arrangement, the vertical muscle includes outside and indulges the vertical muscle of muscle and inner side, and muscle is indulged in two a branch of arrangements, institute in the outside
It is in single arrangement to state the vertical muscle in inner side, and a plurality of single outside is indulged muscle and bent up with the vertical muscle doubling in inner side, forms the weak plastic hinge of stress
Region, the areas of plasticity hinge is located at the hollow weak location with solid boundary in bridge pier main body pier bottom.
2. a kind of main pier of railway High-pier and long-span continuous frigid frame bridge according to claim 1, it is characterised in that：Indulge the inner side
Muscle is bent up laterally, is further bent to outside, forms the vertical muscle in outside with the single vertical a branch of arrangement of two, muscle, muscle phase is indulged with inner side
To outside indulge muscle wherein one inside lateral bending rise, be further bent to form to inner side inner side indulge muscle.
3. a kind of main pier of railway High-pier and long-span continuous frigid frame bridge according to claim 1, it is characterised in that：The weak position
Putting also includes stirrup and lacing wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468115.4U CN206418394U (en) | 2016-12-29 | 2016-12-29 | A kind of main pier of railway High-pier and long-span continuous frigid frame bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468115.4U CN206418394U (en) | 2016-12-29 | 2016-12-29 | A kind of main pier of railway High-pier and long-span continuous frigid frame bridge |
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| CN206418394U true CN206418394U (en) | 2017-08-18 |
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| CN201621468115.4U Active CN206418394U (en) | 2016-12-29 | 2016-12-29 | A kind of main pier of railway High-pier and long-span continuous frigid frame bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824174A (en) * | 2018-08-22 | 2018-11-16 | 云南大学 | A kind of assembled steel reinforced concrete arch-type bridge prefabricated stand column shock-resistant node |
| CN109706981A (en) * | 2018-12-29 | 2019-05-03 | 中铁二院工程集团有限责任公司 | The shake table model system of high gradient slope pier footing stress deformation characteristic |
-
2016
- 2016-12-29 CN CN201621468115.4U patent/CN206418394U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824174A (en) * | 2018-08-22 | 2018-11-16 | 云南大学 | A kind of assembled steel reinforced concrete arch-type bridge prefabricated stand column shock-resistant node |
| CN108824174B (en) * | 2018-08-22 | 2024-01-30 | 云南大学 | Prefabricated stand anti-seismic node of assembled reinforced concrete arch bridge |
| CN109706981A (en) * | 2018-12-29 | 2019-05-03 | 中铁二院工程集团有限责任公司 | The shake table model system of high gradient slope pier footing stress deformation characteristic |
| CN109706981B (en) * | 2018-12-29 | 2023-09-22 | 中铁二院工程集团有限责任公司 | Vibrating table model test system for high-steep slope pier foundation stress deformation characteristics |
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