A kind of bridge shock reducing guard rail pedestal
Technical field
The utility model relates to technical field of bridge construction, and in particular to a kind of bridge shock reducing guard rail pedestal.
Background technique
In recent years, earthquake takes place frequently in global range, causes great life and property loss, a large amount of bridges to the disaster area mankind
Structure is seriously destroyed in earthquake, causes serious secondary disaster.To improve bridge structure anti-seismic performance, subtract shock insulation skill
Art has gradually been widely used in the design of bridge structure.Currently, mainly using vibration absorption and isolation support, damper in bridge structure
Equal devices carry out seismic isolation design, but vibration absorption and isolation support, damper etc. are typically designed to play a role in the case where big shake acts on,
In, under small earthquake effect generally require to go to resist geological process by bridge itself, and seismic isolation device cost is higher, Hen Duoqiao
Girder construction can't use above-mentioned seismic isolation device, only resist geological process by structure itself.
Utility model content
Purpose of the utility model is to overcome the deficiencies of the above prior art and provide a kind of bridge shock reducing guard rail pedestals
And working method, it plays guardrail in seismic process and subtracts function of shock insulation, for using the bridge of vibration absorption and isolation support or damper,
It makes up in, the problem of conventional seismic isolation device does not play a role in small earthquake, while also can further improve damping when big shake
Effect;For not using the bridge of conventional seismic isolation device, then bridge structure can be reduced certainly by the function of shock insulation that subtracts of guardrail
The antidetonation demand of body reduces design difficulty.
To achieve the above object, the utility model adopts the following technical solutions:
A kind of bridge shock reducing guard rail pedestal, including the steel tank being fixed on the girder of bridge, the steel tank includes bottom plate
With two pieces of risers being located on bottom plate, the riser outside is equipped with the ribbed stiffeners of multiple embedment deck pavings, sets on the bottom plate
Multiple resilient cushions are set, the resilient cushion is used to support guardrail to be placed, fills out on the inside of two risers of the steel tank equipped with flexibility
Layer is filled, for filling the gap between guardrail and riser to be placed.
Further, the height of the riser is greater than the thickness of deck paving, and the distance between two riser medial surfaces are big
In the width of guardrail to be placed, baseplate width is put more energy into the sum of rib width not less than riser outer rim distance and two sides, ribbed stiffener
Height is not more than the thickness of deck paving.
Further, the ribbed stiffener is welded on the outer surface of plate upper surface and riser.
Further, the steel tank is fixed on girder by multiple anchor bars, and the anchor bar is along bridge Xiang Jun
Even arrangement.
Further, the resilient cushion uses rubber pad.
Further, the flexible filled layer uses sheet rubber.
The invention also discloses a kind of bridge working methods of shock reducing guard rail pedestal:
During bridge normal operation, guardrail is statically placed in steel tank, is supported using rubber pad, and vehicle is touched with guardrail
When hitting, impact force is transferred to two pieces of risers of steel tank by guardrail and ribbed stiffener, impact force are undertaken by steel tank and ribbed stiffener.
When earthquake, since rubber pad rigidity is small, guardrail geological process lower edge along bridge to occur horizontal vibration, reduce shield
Transmitting of the seismic force produced by column to bridge structure, and a part of seismic energy is absorbed, bridge is reduced by the vibration of guardrail itself
The vibration of girder construction.
The utility model has the beneficial effects that
The guardrail base structure of the utility model is simple, cheap and easy for construction, can produce guardrail in seismic process
Raw seismic force effectively reduces, and has the function of absorbing seismic energy, is that conventional bridge earthquake resistance means or bridge subtract seismic isolation technology
Effective supplement.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is along direction across bridge the utility model overall structure diagram;
Fig. 2 is A in the utility model Fig. 1 to schematic diagram;
Wherein, 1. bottom plate, 2. risers, 3. deck pavings, 4. ribbed stiffeners, 5. guardrails, 6. rubber pads, 7. sheet rubbers, 8. anchors
Gu reinforcing bar, 9. girders.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the utility model, only indicate and attached drawing
The upper and lower, left and right direction of itself is consistent, not to structure rise restriction effect, it is only for convenient for description the utility model and
Simplify description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific orientation construction
And operation, therefore should not be understood as limiting the present invention.
As background technique is introduced, currently, mainly using devices such as vibration absorption and isolation support, dampers in bridge structure
Seismic isolation design is carried out, but vibration absorption and isolation support, damper etc. are typically designed to play a role in the case where big shake acts on, middle or smallly
It generally requires to go to resist geological process by bridge itself under shake effect, and seismic isolation device cost is higher, many bridge structures
Above-mentioned seismic isolation device can't be used, geological process is only resisted by structure itself, in view of the above-mentioned problems, present applicant proposes
A kind of bridge shock reducing guard rail pedestal and working method.
In a kind of exemplary embodiment of the application, as shown in Figs. 1-2, a kind of bridge shock reducing guard rail pedestal, including it is solid
Due to the steel tank of the girder 9 of bridge, the steel tank includes bottom plate 1 and the riser 2 positioned at bottom plate both ends, welding on the outside of the riser
The ribbed stiffener 4 of multiple embedment deck pavings 3, the distance of adjacent ribbed stiffener is calculated according to design to be determined, the height of the riser
Degree is slightly larger than the thickness of deck paving, and the distance between two riser medial surfaces are slightly larger than the width of guardrail 5 to be placed, bottom plate
Width is put more energy into the sum of rib width not less than riser outer rim distance and two sides, and ribbed stiffener is welded on the appearance of plate upper surface and riser
On face, the height of ribbed stiffener is not more than the thickness of deck paving.
Multiple resilient cushions are set on the bottom plate of the steel tank, and the resilient cushion uses rubber pad 6, and the rubber pad is for branch
Guardrail to be placed is supportted, flexible filled layer is equipped on the inside of two risers of the steel tank, the flexibility filled layer uses sheet rubber 7
Or other water proof flexible packing materials, after guardrail installation, for filling the gap between guardrail and riser.Flexible filled layer will not
It influences guardrail to occur along bridge Xiang Zhendong, while guaranteeing that under the effect of lateral impact power transverse shifting will not occur for guardrail.
The steel tank is fixed on girder by multiple anchor bars 8, the anchor bar along bridge to being evenly arranged, phase
The distance of adjacent anchor bar is 10cm-20cm, is specifically determined according to design requirement by calculating apart from size.
The invention also discloses a kind of bridge working methods of shock reducing guard rail pedestal:
Guardrail is installed in steel tank, is supported using rubber pad, sheet rubber is filled between guardrail and the riser of steel tank
Gap.
During bridge normal operation, guardrail is statically placed in steel tank, and when vehicle and guardrail collide, impact force is passed by guardrail
The two pieces of risers and ribbed stiffener, impact force for being handed to steel tank are undertaken by steel tank and ribbed stiffener.
When earthquake, since rubber pad rigidity is small, guardrail geological process lower edge along bridge to occur horizontal vibration, reduce shield
Transmitting of the seismic force produced by column to bridge structure, and a part of seismic energy is absorbed, bridge is reduced by the vibration of guardrail itself
The vibration of girder construction.
The horizontal vibration frequency of guardrail and bridge when making earthquake by designing the horizontal rigidity for enabling rubber pad to provide
Principal oscillation frequency is close, can preferably realize that guardrail absorbs the effect of seismic energy.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.