CN204530438U - A kind of bridge buffering energy-consumption anti-fall girder apparatus - Google Patents

A kind of bridge buffering energy-consumption anti-fall girder apparatus Download PDF

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Publication number
CN204530438U
CN204530438U CN201520102683.1U CN201520102683U CN204530438U CN 204530438 U CN204530438 U CN 204530438U CN 201520102683 U CN201520102683 U CN 201520102683U CN 204530438 U CN204530438 U CN 204530438U
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China
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bridge
mounting plate
upper mounting
power consumption
installation board
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郑晓龙
樊启武
曾永平
杨平
杨国静
周帅
王典斌
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China Railway Eryuan Engineering Group Co Ltd CREEC
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China Railway Eryuan Engineering Group Co Ltd CREEC
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Abstract

A kind of bridge buffering energy-consumption anti-fall girder apparatus, effectively to resist earthquake disaster, prevents the excessive adverse effect waiting generation of bridge lateral displacement, avoids beam to destroy, and can conveniently install and change.Comprise the upper mounting plate being fixedly mounted on Liang Tishang, the lower installation board be fixedly mounted on bridge pier.Described upper mounting plate bottom has guide groove structure, offers the direction across bridge gathering sill with lower ending opening in this guide groove structure.Arrange the power consumption sheet with Trapezoidal plate body be made up of mild steel between described upper mounting plate, lower installation board along direction across bridge interval, the top of each power consumption sheet is positioned at direction across bridge gathering sill and retrains by it, and bottom then forms a fixed connection with lower installation board.

Description

A kind of bridge buffering energy-consumption anti-fall girder apparatus
Technical field
The utility model relates to bridge, particularly a kind of bridge buffering energy-consumption anti-fall girder apparatus.
Background technology
Along with socioeconomic development, the expansion of China's traffic network, the ratio that bridge accounts in the line is more and more higher.Bridge construction, as the important component part of lifeline engineering, is the position of most rapid wear when earthquake disaster occurs.How to ensure that bridge does not fall when earthquake occurs beam, be vital concerning Bridge Earthquake Resistance Design.
Anti-fall girder apparatus is the key constructs of bridge earthquake resistance, is mainly used in preventing superstructure and the excessive beam that falls caused of substructure relative displacement.Therefore in the bridge engineering in earthquake intensity area, generally all have employed anti-fall girder apparatus.What current anti-fall girder apparatus generally adopted is all kinds of block form of antidetonation, but this form anti-fall girder apparatus limitation that all ubiquity is certain, imbody is several aspect below:
One, do not have cushioning effect or cushioning effect weak, beam body and block or beam are almost rigid collision between anti-drop device and bearing pad stone, easily cause bridge construction to be destroyed, and maintenance difficulty are large;
Two, can not consume energy, the energy-dissipating devices such as damper need be set in addition to dissipate tectonic comparison;
Three, anti-fall beam action can only be played in the horizontal direction, can not the vertical motion of operative constraint beam.
Four, rigid collision, impact forces is large, and anti-drop device needs larger cross-section to consume more material on the one hand, also large to the percussion of beam and bridge pier on the other hand;
Five, repair the problem that difficulty is large, replaceability is poor after shake, substantially cannot repair once destroy, even if can repair, the economy spent, time cost are all higher, so also may cause the danger of bridge subject to severe risks of damage in strong aftershock.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of bridge buffering energy-consumption anti-fall girder apparatus, effectively to resist earthquake disaster, prevents the excessive adverse effect waiting generation of bridge lateral displacement, avoids beam to destroy, and can conveniently install and change.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
A kind of bridge buffering energy-consumption anti-fall girder apparatus of the present utility model, comprise the upper mounting plate being fixedly mounted on Liang Tishang, the lower installation board be fixedly mounted on bridge pier, it is characterized in that: described upper mounting plate bottom has guide groove structure, in this guide groove structure, offer the direction across bridge gathering sill with lower ending opening; Arrange the power consumption sheet with Trapezoidal plate body be made up of mild steel between described upper mounting plate, lower installation board along direction across bridge interval, the top of each power consumption sheet is positioned at direction across bridge gathering sill and retrains by it, and bottom then forms a fixed connection with lower installation board.
The beneficial effects of the utility model are, can provide certain rigidity under common earthquake, effectively the displacement of restriction bridge lateral, and have longitudinal spacing and girder falling function; Under common earthquake, possess self-resetting capability, only there is elastic deformation or small plastic strain to dissipative cell in level, automatically can recover installment state, do not need maintenance and change; Under rarely occurred earthquake, in the neck formation plastic hinge power consumption of power consumption sheet, the power consumption sheet energy consumption effect be made up of mild steel is good, and equivalent damping ratio is high, and damping loop number of times can reach tens of times, realizes seismic energy dissipation and girder falling effect; Vertical rigidity is large, can realize anti-pulling function.Capable of being combined assembled, required installing space is little, and design earthquake power scope is wide, carries out composite assembly, can be taken as 100kN to 3000kN according to bridge design seismic forces size requirement; Temperature applicable range is wide, and temperature applicable range is-45 DEG C ~+65 DEG C; Each component is all detachably assembled, and installs simple and convenient, is easy to check, keep in repair and change simultaneously.
Accompanying drawing explanation
This manual comprises following two width accompanying drawings:
Fig. 1 is the front view of a kind of bridge buffering energy-consumption of the utility model anti-fall girder apparatus;
Fig. 2 is the lateral view of a kind of bridge buffering energy-consumption of the utility model anti-fall girder apparatus;
Component shown in figure and corresponding mark: upper mounting plate 11, guide groove structure 11a, lower installation board 21, guiding crosspiece 30a, hyperbolic line segment 30b, rubber sheet gasket 31.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
See figures.1.and.2, a kind of bridge buffering energy-consumption anti-fall girder apparatus of the present utility model, comprises the upper mounting plate 11 being fixedly mounted on Liang Tishang, the lower installation board 21 be fixedly mounted on bridge pier.Described upper mounting plate 11 bottom has guide groove structure 11a, offers the direction across bridge gathering sill with lower ending opening in this guide groove structure 11a.Arrange the power consumption sheet with Trapezoidal plate body be made up of mild steel between described upper mounting plate 11, lower installation board 21 along direction across bridge interval, the top of each power consumption sheet is positioned at direction across bridge gathering sill and retrains by it, and bottom then forms a fixed connection with lower installation board 21.
With reference to Fig. 1, upper mounting plate 11, the lower installation board 2 of anti-fall girder apparatus pass through anchor ingot steel rod and beam body and bridge pier compact siro spinning technology, when coming earthquake, there is larger horizontal movement in beam body and bridge pier, this device can be set up by power consumption sheet and retrain between beam body and bridge pier, thus avoids beam to destroy.Power consumption sheet is a kind of steel damping element, is made up of the mild steel of high ductility, can dissipate partly shake or the energy of other impact load when deforming.By artificially arranging the power consumption weak link of power consumption sheet, stable plastic hinge can be formed under rarely occurred earthquake, dissipation seismic energy.With reference to Fig. 1, described power consumption sheet has upper guide to crosspiece 30a and hyperbolic line segment 30b, and guiding crosspiece 30a is positioned at the direction across bridge gathering sill of upper mounting plate 11, and plate body width is broadened to lower end gradually by the upper end of hyperbolic line segment 30b.Namely by optimizing calculating in a large number, the neck that power consumption sheet guiding crosspiece 30a and hyperbolic line segment 30b crosses is set as areas of plasticity hinge, and neck width and top, the proportional setting of bottom width, can consume energy under shaking greatly effectively.
With reference to Fig. 1, described power consumption sheet guiding crosspiece 30a is positioned at the direction across bridge gathering sill of upper mounting plate 11, and retrain by it, the bottom of hyperbolic line segment 30b is fixedly connected with lower installation board 21 by bearing pin, in the displacement of vertical direction energy restraint beam body and bridge pier, when bridge because when hurricane or earthquake and the reasons in structure of itself are beated at vertical direction, there is anti-pulling, antidumping.
With reference to Fig. 1, there is certain gap in direction across bridge gathering sill and the power consumption sheet of the upper mounting plate 11 crosspiece 30a that lead, can not bear downward vertical force under non-earthquake conditions, do not affect device and beam body because of the comparatively thin tail sheep of the reason generations such as variations in temperature and rotation.Between the guiding crosspiece 30a of described power consumption sheet and the direction across bridge gathering sill of upper mounting plate 11, rubber sheet gasket 31 is set, can effectively cushions dissipation impact energy and impact energy by rubber sheet gasket 31 viscoplastic deformations.
See figures.1.and.2, the bottom of the hyperbolic line segment 30b of described power consumption sheet is fixedly connected with lower installation board 21 by bearing pin, thus avoids stress and concentrate caused weld cracking, improves the hysteresis ability of dissipative cell, and survivable under little shake.
Some principles of the above a kind of bridge buffering energy-consumption of the utility model anti-fall girder apparatus that just explains through diagrams, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.

Claims (4)

1. a bridge buffering energy-consumption anti-fall girder apparatus, comprise the upper mounting plate (11) being fixedly mounted on Liang Tishang, the lower installation board (21) be fixedly mounted on bridge pier, it is characterized in that: described upper mounting plate (11) bottom has guide groove structure (11a), in this guide groove structure (11a), offer the direction across bridge gathering sill with lower ending opening; The power consumption sheet with Trapezoidal plate body be made up of mild steel is set along direction across bridge interval between described upper mounting plate (11), lower installation board (21), the top of each power consumption sheet is positioned at direction across bridge gathering sill and retrains by it, and bottom then forms a fixed connection with lower installation board (21).
2. a kind of bridge buffering energy-consumption anti-fall girder apparatus as claimed in claim 1, it is characterized in that: described power consumption sheet has upper guide to crosspiece (30a) and hyperbolic line segment (30b), guiding crosspiece (30a) is positioned at the direction across bridge gathering sill of upper mounting plate (11), and plate body width is broadened to lower end gradually by the upper end of hyperbolic line segment (30b).
3. a kind of bridge buffering energy-consumption anti-fall girder apparatus as claimed in claim 2, is characterized in that: the bottom of the hyperbolic line segment (30b) of described power consumption sheet is fixedly connected with lower installation board (21) by bearing pin.
4. a kind of bridge buffering energy-consumption anti-fall girder apparatus as claimed in claim 2, is characterized in that: arrange rubber sheet gasket (31) between the guiding crosspiece (30a) of described power consumption sheet and the direction across bridge gathering sill of upper mounting plate (11).
CN201520102683.1U 2015-02-12 2015-02-12 A kind of bridge buffering energy-consumption anti-fall girder apparatus Active CN204530438U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104652253A (en) * 2015-02-12 2015-05-27 中铁二院工程集团有限责任公司 Buffer energy-consuming anti-drop-beam device for bridge
CN109706830A (en) * 2018-12-28 2019-05-03 西安石油大学 A kind of anti-pulling steel block of embedded high-damping rubber energy consumption pad
CN110863423A (en) * 2019-11-28 2020-03-06 刘海洋 Bridge butt joint anti-seismic device
CN111576191A (en) * 2020-05-28 2020-08-25 湖南万润建设科技有限公司 Beam falling prevention device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104652253A (en) * 2015-02-12 2015-05-27 中铁二院工程集团有限责任公司 Buffer energy-consuming anti-drop-beam device for bridge
CN109706830A (en) * 2018-12-28 2019-05-03 西安石油大学 A kind of anti-pulling steel block of embedded high-damping rubber energy consumption pad
CN110863423A (en) * 2019-11-28 2020-03-06 刘海洋 Bridge butt joint anti-seismic device
CN110863423B (en) * 2019-11-28 2021-12-14 苏交科集团股份有限公司 Bridge butt joint anti-seismic device
CN111576191A (en) * 2020-05-28 2020-08-25 湖南万润建设科技有限公司 Beam falling prevention device

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