CN203603041U - Transverse elastic limiting and longitudinal hydraulic fusing damping combined support system - Google Patents

Transverse elastic limiting and longitudinal hydraulic fusing damping combined support system Download PDF

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Publication number
CN203603041U
CN203603041U CN201320758702.7U CN201320758702U CN203603041U CN 203603041 U CN203603041 U CN 203603041U CN 201320758702 U CN201320758702 U CN 201320758702U CN 203603041 U CN203603041 U CN 203603041U
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China
Prior art keywords
hydraulic pressure
spacing
damping
bearing
fusing
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CN201320758702.7U
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Chinese (zh)
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罗世东
陈勇
曾敏
张艳军
陈海桦
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

The utility model discloses a transverse elastic limiting and longitudinal hydraulic fusing damping combined support system. The longitudinal restraint of a hydraulic fusing damping support and the transverse restraint of a limiting height adjusting rubber support are adopted. The hydraulic fusing damping support is located between the top of a first main pier and the bottom of a main beam, wherein the first main pier and the main beam are located on the same side of a midspan. The limiting height adjusting rubber support is located between the inner side of an arch springing and the outer side of the main beam. A second main pier opposite to the first main pier is provided with a two-way movable spherical steel support. The longitudinal restraint is in the locking state under normal circumstances, it is ensured that the longitudinal restraint is achieved under the effect of braking force and track force in the using period, unlocking is achieved in an earthquake, the damping effect is achieved, and locking is recovered after the earthquake. Transverse restraint ensures that transverse limiting is achieved in the using period, the support is not disengaged, and transverse earthquake force can be reduced. Under the effect of the earthquake and the rare occurrence earthquake, both the pier body and the foundation work within the elastic range, the earthquake intensity which a bridge can resist is greatly improved, connecting of traffic lifelines at key transportation nodes is kept, and the important effect on earthquake relief is achieved.

Description

Spacing, the longitudinal hydraulic pressure fusing of transverse elasticity damping combined isolator system
Technical field
The utility model relates to a kind of bridge pad system, and one is applied in highway and railway arch bridge, cable stayed bridge, girder of suspension bridge support system specifically.
Background technology
Bridge pad system is bridge to be carried out to the constraint of vertical and horizontal, conventionally adopts longitudinal restraint system and horizontal restrain system to be used in conjunction with, and guarantees that bridge normally uses.
Common longitudinal restraint system and shortcoming thereof are as follows:
1, main pier arranges two longitudinal fixed bearings: its beam portion vertical force overwhelming majority passes to arch rib by suspension rod, and pier topmast seat model is little.This bearing can not be kept out the earthquake horizontal force of whole beam body, and under macroseism, often bearing is all cut up, and causes the destruction of the bridge construction beam that even falls;
2, two main Dun Chu arrange speed lock: when earthquake, two main pier speed lock average mark spreader beam portion seismic forcess, can suitably reduce the seismic forces that a single point is born, but can not play the effect of vibration damping.Along with the continuation of seismic forces strengthens, steel case beam can damage, and is difficult to maintenance.In addition, on Longspan Bridge, speed lock model is larger, and cost is high;
3, bridge centerline is longitudinally established (can shear-type) shearing force tenon: due to brake force and fatigue strength require shearing force tenon shear strength can not be too little, otherwise it is not obvious " to cut off " isolating affection, meanwhile, steel case beam need arrange powerful stiffening construction, causes steel box girder structure complexity and cost high;
Above three kinds of support systems, due to support damage or the damage of beam portion having occurred after shaking, need back timber operation, maintenance difficulty after earthquake, and repair time is long, and expense is high.
4, main Dun Chu arranges viscous damper: due to longitudinally fixing requirement of girder under not satisfied temperature and Braking, only in there is the bridge of drag-line or other longitudinal restraints in the beam portions such as large span stayed-cable bridge, adopt therefore general, range of application is narrow.
Conventional horizontal restrain system and shortcoming thereof are as follows:
1, horizontally set fixed bearing: be generally applied on the bridge type that end reaction is little, bearing model is little, design is difficulty very, meanwhile, can not keep out the earthquake horizontal force of whole beam body;
2, laterally establish General Purpose Rubber bearing: when bridge deck width is wider, under cooling and Lateral Force, bearing is easy regular coming to nothing often, causes that bearing damages bridge floor and track displacement, can not meet the requirement of train travel cross spacing.
Utility model content
The utility model, for the deficiency of describing in background technology, proposes a kind of basic demand that had both met longitudinal restraint, cross spacing between the bridge operating period, can effectively reduce again seismic forces, and late maintaining bearing constraint system easy to maintenance.
The technical solution adopted in the utility model is: a kind of for retraining spacing, the longitudinal hydraulic pressure fusing of the transverse elasticity damping combined isolator system of bridge main beam and bridge pier, it is characterized in that: adopt hydraulic pressure fusing damping supporting seat longitudinal restraint, the spacing neoprene bearing horizontal restrain of heightening; Described hydraulic pressure fusing damping supporting seat is between the first main pier top and girder bottom of span centre homonymy; The described spacing neoprene bearing of heightening is between arch springing inner side and girder outside; The second main pier relative with the first main pier is provided with bi-directional movable spherical steel support.
Preferably, described hydraulic pressure fusing damping supporting seat comprises upper bracket plate and lower support plate; Lower support plate top slidably connects increases piece, described in increase between piece and upper bracket plate and be provided with spherical crown; Described in parallel in described lower support plate, increase piece glide direction and be detachably provided with hydraulic pressure Fuse Type viscous damper; The described piece of increasing is connected with described hydraulic pressure Fuse Type viscous damper.
Further preferred, described in increase and between piece and lower support plate, be provided with the first sliding panel.Like this, can avoid increasing the wearing and tearing of piece and lower support plate, meet the displacement request of bearing along chute.
Further preferred, described in increase piece bottom be provided with guide rail, described lower support plate is provided with the chute coordinating with described guide rail.Like this, utilize guide rail and coordinating of chute to play the effect of guiding.
Further preferred, described in increase piece and be provided with multiple junction plates, described junction plate is set in respectively described hydraulic pressure Fuse Type viscous damper two ends.
Further preferred, the top of described junction plate is U-shaped.
Preferably, the described spacing neoprene bearing of heightening comprises bearing lower plate, and bearing lower plate is provided with the second sliding panel, between described bearing lower plate and the second sliding panel, is provided with height-regulating mechanism; Described bearing lower plate two relative side is provided with baffle plate, and the height of described baffle plate is greater than described the second sliding panel and described height-regulating mechanism thickness sum; Described the second sliding panel is provided with bearing upper plate, between described the second sliding panel and bearing upper plate, is provided with neoprene bearing body.
Further preferred, described height-regulating mechanism comprises the one group of wedge and the multiple bolt of heightening that are oppositely arranged; Described wedge is between described the second sliding panel bottom and bearing lower plate top, and described the second sliding panel bottom or bearing lower plate bottom are provided with the inclined-plane coordinating with described wedge; The described bolt of heightening is through described wedge; Described heighten bolt axially and described wedge towards parallel, and vertical described baffle plate.Like this, heighten bolt by tightening, two wedges are close gradually, utilize inclined-plane to rise the second sliding panel, heighten thereby realize.
Further preferred, the both ends of the surface of described wedge are inclined-plane, and described the second sliding panel bottom and bearing lower plate bottom are equipped with the inclined-plane coordinating with described wedge.
Preferably, on bridge abutment pier, be equipped with bi-directional movable spherical steel support.
The beneficial effects of the utility model are: longitudinal restraint is in the lock state under normal circumstances, guarantee between the operating period longitudinal restraint under brake force, rail force effect, and release while running into earthquake, plays the effect of damping, recovers locking after shake; Horizontal restrain can guarantee between the operating period that cross spacing and bearing do not come to nothing, and can reduce again lateral seismic force.Under earthquake and rarely occurred earthquake effect, all work in pier shaft and basis in elastic range, greatly improved the earthquake intensity that bridge can be resisted, and maintained the perforation of crucial transport node place's traffic lifeline, and earthquake relief work is played an important role.Shake rear support system still can normally be worked, and hydraulic pressure Fuse Type viscous damper is detachable, and late maintaining maintenance does not need back timber.
Accompanying drawing explanation
Fig. 1 is layout schematic diagram of the present utility model, and wherein, in figure, arrow represents the direction that this place's bearing can move;
Fig. 2 is the facade structures schematic diagram of the main Dun Chu of the utility model;
Fig. 3 is that the master of the disclosed hydraulic pressure fusing of the utility model damping supporting seat looks schematic diagram;
Fig. 4 is the cross-sectional schematic of Fig. 3;
Fig. 5 is the disclosed spacing cross-sectional schematic of heightening neoprene bearing of the utility model;
The E-E cross-sectional schematic of Fig. 5 of Fig. 6.
The specific embodiment
As depicted in figs. 1 and 2, spacing, the longitudinal hydraulic pressure fusing of transverse elasticity damping combined isolator system, adopts hydraulic pressure fusing damping supporting seat 1 longitudinal restraint, spacing neoprene bearing 2 horizontal restrain of heightening; Described hydraulic pressure fusing damping supporting seat 1 is between first main pier 3 tops and girder 5 bottoms of span centre homonymy; The described spacing neoprene bearing 2 of heightening is between arch springing 6 inner sides and girder 5 outsides; The second main pier 4 relative with the first main pier 3 is provided with bi-directional movable spherical steel support 7; Preferably, on described the first abutment pier and the second abutment pier, all adopt bi-directional movable spherical steel support 7.
As shown in Figure 3 and Figure 4, described hydraulic pressure fusing damping supporting seat 1 comprises upper bracket plate 1.1 and lower support plate 1.2; Lower support plate 1.2 tops slidably connect increases piece 1.3, described in increase between piece 1.3 and upper bracket plate 1.1 and be provided with spherical crown 1.4; Described in parallel in described lower support plate 1.2, increase piece 1.3 glide directions and be detachably provided with hydraulic pressure Fuse Type viscous damper 1.5; The described piece 1.3 of increasing is provided with multiple junction plates 1.31, and described junction plate 1.31 is set in respectively described hydraulic pressure Fuse Type viscous damper 1.5 two ends, and preferred, the top of described junction plate 1.31 is U-shaped.
Preferably, described in, increase and between piece 1.3 and lower support plate 1.2, be provided with the first sliding panel 1.6.Like this, can avoid increasing the wearing and tearing of piece 1.3 and lower support plate 1.2, meanwhile, meet the displacement request of bearing along chute.
Preferably, described in increase piece 1.3 bottom be provided with guide rail 1.7, described lower support plate 1.2 is provided with the chute 1.8 coordinating with described guide rail 1.7.Like this, utilize guide rail 1.7 and coordinating of chute 1.8 to play the effect of guiding.
As shown in Figure 5 and Figure 6, the described spacing neoprene bearing 2 of heightening comprises bearing lower plate 2.1, and bearing lower plate 2.1 is provided with the second sliding panel 2.2, between described bearing lower plate 2.1 and the second sliding panel 2.2, is provided with height-regulating mechanism 2.3; Described bearing lower plate 2.1 two relative sides are provided with baffle plate 2.4, and the height of described baffle plate 2.4 is greater than described the second sliding panel 2.2 and described height-regulating mechanism 2.3 thickness sums; Described the second sliding panel 2.2 is provided with bearing upper plate 2.5, between described sliding panel 2.3 and bearing upper plate 2.5, is provided with neoprene bearing body 2.6.
Preferably, described height-regulating mechanism 2.3 comprises the one group of wedge 2.31 and the multiple bolt 2.32 of heightening that are oppositely arranged; Described wedge 2.31 is between described the second sliding panel 2.2 bottoms and bearing lower plate 2.1 tops, and described the second sliding panel 2.2 bottoms or bearing lower plate 2.1 bottoms are provided with the inclined-plane coordinating with described wedge 2.31; The described bolt 2.32 of heightening is through described wedge 2.31; Described heighten bolt 2.32 axially and described wedge 2.31 towards parallel, and vertical described baffle plate 2.4.Like this, by tightening, to heighten bolt 2.32, two wedges 2.31 close gradually, utilizes inclined-plane to rise the second sliding panel 2.2, heightens thereby realize.
Further preferred, the both ends of the surface of described wedge 2.31 are inclined-plane, and described the second sliding panel 2.2 bottoms and bearing lower plate 2.1 bottoms are equipped with the inclined-plane coordinating with described wedge 2.31.
Hydraulic pressure Fuse Type damping supporting seat leads by guide rail can longitudinal sliding motion, longitudinally fixing by setting the rational fusing hydraulic pressure Fuse Type damping supporting seat of trying hard to keep between the normal operating period of card, and device for fusing release in the time of larger earthquake, viscous damper starts to play a role.Hydraulic pressure Fuse Type damping supporting seat can be divided into two parts, and hydraulic pressure fuse dampers and bi-directional movable steel support two parts, can first install bi-directional movable steel support, after main girder construction completes, then hydraulic pressure fuse dampers is installed.Other are with identical with common bearing mount scheme.
The spacing elastic caoutchouc of heightening neoprene bearing props up seat body can adapt to certain distortion, and the bolt that can tighten screw rod is adjusted the height of bearing.Increase after height adjusting function, the spacing neoprene bearing of heightening can easily be installed and change, more can guarantee certain precompression, prevent the come to nothing phenomenon of spacing bearing under temperature and Lateral Force, guarantee the particularly stability of track structure and the safety of driving of bridge floor facility.The spacing spacing bearing of the neoprene bearing amount of heightening of heightening is within 0 o'clock, to put in advance to interspace, and heightens 5mm, then be in the milk behind location.For preventing that the spacing neoprene bearing of heightening from coming to nothing, mortar reaches after intensity, continues height-adjustable supports height, makes to reach design load at design temperature condition undersetting precompression.The spacing neoprene bearing of heightening just can reserve gap turning down after 5mm, is convenient to reach after service life take out and change.
Like this, longitudinal restraint adopts at hydraulic pressure Fuse Type damping supporting seat, is in the lock state under normal circumstances, guarantees between the operating period longitudinal restraint under brake force, rail force effect, and release while running into earthquake, plays the effect of damping, recovers locking after shake; Horizontal restrain adopts the spacing neoprene bearing of heightening, and can guarantee between the operating period that cross spacing and bearing do not come to nothing, and can reduce again lateral seismic force.Under earthquake and rarely occurred earthquake effect, all work in pier shaft and basis in elastic range, greatly improved the earthquake intensity that bridge can be resisted, and maintained the perforation of crucial transport node place's traffic lifeline, and earthquake relief work is played an important role.Guaranteed that shake rear support system still can normally work, hydraulic pressure Fuse Type viscous damper is detachable, and late maintaining maintenance does not need back timber.
Adopt after spacing, the longitudinal hydraulic pressure fusing of transverse elasticity damping combined isolator system, under rarely occurred earthquake effect, the spacing neoprene bearing counter-force damping rate of heightening can reach 29%, and longitudinal force damping rate in main pier place can reach 88%; Improve greatly the stressed of the thin wall constructions such as steel case beam, reduced steel case beam steel using amount, saved investment.At the bottom of cushion cap, moment of torsion damping rate reaches 45%~55%, and " fixing " pier cushion cap bottom horizontal moment of flexure damping rate damping rate reaches 47%, and effectiveness in vibration suppression is remarkable, can reduce by a relatively large margin pier shaft and infrastructure investment, and design of substructure is played a key effect.

Claims (10)

1. for retraining spacing, the longitudinal hydraulic pressure fusing of a transverse elasticity damping combined isolator system for bridge main beam and bridge pier, it is characterized in that: adopt hydraulic pressure fusing damping supporting seat (1) longitudinal restraint, spacing neoprene bearing (2) horizontal restrain of heightening; Described hydraulic pressure fusing damping supporting seat (1) is positioned between first main pier (3) top and girder (5) bottom of span centre homonymy; The described spacing neoprene bearing (2) of heightening is positioned between arch springing (6) inner side and girder (5) outside; The second main pier (4) relative with the first main pier (3) is provided with bi-directional movable spherical steel support (7).
2. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 1 damping combined isolator system, is characterized in that: described hydraulic pressure fusing damping supporting seat (1) comprises upper bracket plate (1.1) and lower support plate (1.2); Lower support plate (1.2) top slidably connects increases piece (1.3), described in increase between piece (1.3) and upper bracket plate (1.1) and be provided with spherical crown (1.4); Described in parallel in described lower support plate (1.2), increase piece glide direction and be detachably provided with hydraulic pressure Fuse Type viscous damper (1.5); The described piece (1.3) of increasing is connected with described hydraulic pressure Fuse Type viscous damper (1.5).
3. spacing, the longitudinal hydraulic pressure of transverse elasticity according to claim 2 fusing damping combined isolator system, is characterized in that: described in increase between piece (1.3) and lower support plate (1.2) and be provided with the first sliding panel (1.6).
4. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 2 damping combined isolator system, it is characterized in that: described in increase piece (1.3) bottom be provided with guide rail (1.7), described lower support plate (1.2) is provided with the chute (1.8) coordinating with described guide rail (1.7).
5. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 2 damping combined isolator system, it is characterized in that: described in increase piece (1.3) and be provided with multiple junction plates (1.31), described junction plate (1.31) is set in respectively described hydraulic pressure Fuse Type viscous damper (1.5) two ends.
6. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 5 damping combined isolator system, is characterized in that: the top of described junction plate (1.31) is U-shaped.
7. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 1 damping combined isolator system, it is characterized in that: the described spacing neoprene bearing (2) of heightening comprises bearing lower plate (2.1), bearing lower plate (2.1) is provided with the second sliding panel (2.2), between described bearing lower plate (2.1) and the second sliding panel (2.2), is provided with height-regulating mechanism (2.3); Described bearing lower plate (2.1) two relative side is provided with baffle plate (2.4), and the height of described baffle plate (2.4) is greater than described the second sliding panel (2.2) and described height-regulating mechanism (2.3) thickness sum; Described the second sliding panel (2.2) is provided with bearing upper plate (2.5), between described the second sliding panel (2.2) and bearing upper plate (2.5), is provided with neoprene bearing body (2.6).
8. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 7 damping combined isolator system, is characterized in that: described height-regulating mechanism (2.3) comprises the one group of wedge (2.31) and the multiple bolt (2.32) of heightening that are oppositely arranged; Described wedge (2.31) is positioned between described the second sliding panel (2.2) bottom and bearing lower plate (2.1) top, and described the second sliding panel (2.2) bottom or bearing lower plate (2.1) bottom are provided with the inclined-plane coordinating with described wedge (2.31); The described bolt (2.32) of heightening is through described wedge (2.31); Described heighten bolt (2.32) axially and described wedge (2.31) towards parallel, and vertical described baffle plate (2.4).
9. spacing, the longitudinal hydraulic pressure fusing of transverse elasticity according to claim 8 damping combined isolator system, it is characterized in that: the both ends of the surface of described wedge (2.31) are inclined-plane, described the second sliding panel (2.2) bottom and bearing lower plate (2.1) bottom are equipped with the inclined-plane coordinating with described wedge (2.31).
10. according to spacing, the longitudinal hydraulic pressure fusing of arbitrary described transverse elasticity damping combined isolator system in claim 1-9, it is characterized in that: on bridge abutment pier, be equipped with bi-directional movable spherical steel support (7).
CN201320758702.7U 2013-11-26 2013-11-26 Transverse elastic limiting and longitudinal hydraulic fusing damping combined support system Withdrawn - After Issue CN203603041U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590328A (en) * 2013-11-26 2014-02-19 中铁第四勘察设计院集团有限公司 Horizontal elastic limiting and longitudinal hydraulic fusing damping combined support system
CN106245517A (en) * 2016-09-27 2016-12-21 成都市大通路桥机械有限公司 A kind of overload surrender formula wind-resistant support
CN107761586A (en) * 2017-11-17 2018-03-06 中国二冶集团有限公司 Town road Novel deceleration strip

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590328A (en) * 2013-11-26 2014-02-19 中铁第四勘察设计院集团有限公司 Horizontal elastic limiting and longitudinal hydraulic fusing damping combined support system
CN106245517A (en) * 2016-09-27 2016-12-21 成都市大通路桥机械有限公司 A kind of overload surrender formula wind-resistant support
CN107761586A (en) * 2017-11-17 2018-03-06 中国二冶集团有限公司 Town road Novel deceleration strip

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Granted publication date: 20140521

Effective date of abandoning: 20150923

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