CN103835226B - Plane curve beam bridge anti-creep moves stopping means - Google Patents
Plane curve beam bridge anti-creep moves stopping means Download PDFInfo
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- CN103835226B CN103835226B CN201410106659.5A CN201410106659A CN103835226B CN 103835226 B CN103835226 B CN 103835226B CN 201410106659 A CN201410106659 A CN 201410106659A CN 103835226 B CN103835226 B CN 103835226B
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Abstract
The present invention relates to a kind of plane curve beam bridge anti-creep and move stopping means, this device is made up of anchor plate, spacing steel plate, limit assembly from top to bottom.Wherein, anchor plate is made up of upper anchor plate, floor of putting more energy into; Limit assembly is detachable structure, is made up of from inside to outside following critical piece: be connected anchor plate, inner side steel plate, outside plate with pier stud; Inner and outer sliding shoe is placed on interior outside plate end face, arranges corrosion resistant plate and friction pair between sliding shoe and inside and outside steel plate, spacing steel plate; Interior outside plate end face installs end face steel plate, dust cover.The present invention can by assembled connection, meet can check, easily maintenance, can keep in repair, removable requirement.This installation weight is comparatively light, little on the impact of pier stud supporting capacity.This device has that simple structure, construction costs are low, easy construction simultaneously, and be applicable to factory's batch production, field bolted is installed, and does not affect the feature such as bridge deck traffic, appearance looks elegant.
Description
Technical field
The present invention relates to a kind of plane curve beam bridge anti-creep and move stopping means, refer to that middle support design is bi-directional movable bearing, fixed bearing especially, exist and laterally climb the plane curve beam bridge moving hidden danger and disease or horizontal fixed bearing Lack of support, carry out laterally climbing the horizontal anti-creep of the one of moving application in disease maintenance and move stopping means.
Background technology
Along with the develop rapidly that domestic and abroad bridge is built, the application of Curved Beam Bridge in urban interchange is also more and more extensive.Curved Beam Bridge has good compliance for the terrain and its features of various complexity.Particularly in the overpass bridge in city, its excellent the line of beauty is interweaved, and not only can improve the traffic capacity at crossing, one scenic line especially in city.
In recent years, successively there is various disease in some bridges built comparatively early of various places, the public safety accident that the bridge that even occurs collapsing etc. are serious, causes huge economic loss, also result in very large negative effect socially to country.Wherein, " climb and move " problem of Curved Beam Bridge also causes gradually and payes attention to widely.
Curved Beam Bridge mechanical behavior and straight bridge have very big-difference, Earlier designs person is limited to the theory of computation at that time, understand not deep enough to Curved Beam Bridge structural mechanics mechanism, usual employing linear beam model is rule of thumb revised after calculating, the data obtained are often accurate not, and result causes present curved bridge generally to occur climbing moving disease.Plane curve beam bridge, because of himself construction features, easily produces lateral displacement under the effects such as automobile mobile load, the evenly temperature difference, the transverse gradients temperature difference, concrete shrinkage and creep.Particularly, supporting have employed or part have employed the plane curve beam bridge of bi-directional movable bearing, and along with the accumulation of time, this kind of lateral displacement part cannot be recovered, and displacement increases gradually and namely defines transverse direction and " climb and move " disease.After a certain time, the beam body horizontal movement of bearing place is as exceeded design permissible value, and bearing bearing capacity will decline.Climb the problem of moving and gently then reduce road-ability, heavy then endanger bridge structure safe.
Constantly perfect along with the theory of computation, the analysis of engineer to Curved Beam Bridge is more accurate, to Curved Beam Bridge, stressed and deformation characteristic also can better be held, and by reasonable Arrangement support position, adopts the measures such as horizontal fixed bearing to solve and climbs the problem of moving.But for built employing bi-directional movable bearing, existing and laterally climb the bridge moving disease, can be horizontal fixed bearing middle supporting bi-directional movable bearing replacement, replacing position of the fulcrum even can be adopted to solve and to climb the problem of moving.This kind of mode needs to redesign bridge force-bearing system, and it implements difficulty very greatly, needs to carry out synchronization of jacking up to girder; It is improper to control in continuous beam synchronization of jacking up process, and beam body easily produces crack, and need take necessary horizontal temporary spacing measure, and girder jacking all can cause traffic under bridge on bridge and have a strong impact on.
Summary of the invention
The object of this invention is to provide a kind of plane curve beam bridge anti-creep and move stopping means, climb the technical problem of moving further to solve to utilize easy operation to realize preventing plane curve beam bridge from climbing to move or limit it; This device also can solve the technical problem of bearing Horizontal Seismic Lack of support simultaneously in conjunction with pier stud seismic hardening simultaneously, and the overturning or slip resistance analysis that also can be used for only post supporting bridge is reinforced.
In order to realize foregoing invention object, the technical solution adopted in the present invention is as follows:
A kind of plane curve beam bridge anti-creep moves stopping means, and it comprises: upper anchor plate (1), stiffened steel plates (2), spacing steel plate (3), pier stud connect anchor plate (4), inner side steel plate (5), medial roof steel plate (6), sideslip motion block (7), outside plate (8), top steel plate, outside (9), outside slip motion block (10), side gussets (11), corrosion resistant plate and tetrafluoro slide plate slides friction pair (12), dust cover (13), inner side steel plate high-strength bolt (14), side steel plate high-strength bolt (15) and push up steel plate bolt (16); The spacing steel plate (3) that the upper anchor plate (1) that horizontal direction is arranged and the stiffened steel plates (2) and vertical direction that are positioned at spacing steel plate (3) both sides, top are arranged forms entirety by welding, and upper anchor plate (1) is bolted and is installed on bottom plane of main girder; Pier stud connects anchor plate (4) and is welded to connect with pier stud top encased steel plate; Inner side steel plate (5) is connected anchor plate (4) by inner side steel plate high-strength bolt (14) with pier stud and connects; Outside plate (8) is connected with inner side steel plate (5) bolt with side steel plate high-strength bolt (15) by side gussets (11); Sideslip motion block (7), outside slip motion block (10) are positioned on the inner side steel plate (5) of L shape and the outside plate (8) of L shape respectively, and the one side that medial and lateral sliding shoe (7), (10) contact with spacing steel plate (3) is plane, and another side is cambered surface; Top steel plate, medial and lateral (6), (9) are placed in above medial and lateral sliding shoe (7), (10), and fix with top steel, medial and lateral steel plate (5), (8) of top steel plate bolt (16) and L shape together form the cavity protecting medial and lateral sliding shoe (7), (10); Spacing steel plate (3) inserts between the medial and lateral steel plate (5) of limit assembly, (8) and medial and lateral sliding shoe (7), (10); Described medial and lateral sliding shoe (7), (10) all arrange corrosion resistant plate and tetrafluoro slide plate slides friction pair (12) with each contact surface of medial and lateral steel plate (5), (8), spacing steel plate (3).
Reserved certain space between sideslip motion block (7) in described spacing steel plate (3) and lower limit assembly, outside slip motion block (10).
Upper anchor plate (1) directly can be anchored in bottom plane of main girder by crab-bolt; At the kingpost baseplate place that anchoring condition is poor, at kingpost baseplate steel-bonded reinforcement, upper anchor plate (1) is welded at the bottom of girder; Pier stud connects the Dun Ding that anchor plate (4) is welded in stirrup.
Dust cover (13) is placed in above top steel plate, medial and lateral (6), (9), fixes equally with top steel.
Inside limit assembly, steel plate (5) or outside plate (8) install graduated scale.
The present invention has following advantage and good effect:
Climb for solving Curved Beam Bridge the problem of moving, adopt plane curve beam bridge anti-creep to move normal direction that stopping means not only can retrain girder is climbed displacement and is moved, and causes Lack of support when preventing bearing lateral displacement excessive; Also each pier can be made evenly to share horizontal seismic force, improve the Seismic Bearing Capacity of structure; In the overturning or slip resistance analysis of only post supporting bridge plane curve beam bridge is reinforced, also there is the space of application in this device.
This device is easy to make, reliable for effect, is with a wide range of applications in Curved Beam Bridge overhaul, obtains good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is that anti-creep of the present invention moves stopping means sectional elevation.
Fig. 2 is that anti-creep of the present invention moves stopping means flat sectional drawing.
Fig. 3 is that anti-creep of the present invention moves stopping means side view.
Fig. 4 is that anti-creep of the present invention moves stopping means connection layout.
Fig. 5 is the upward view of Fig. 4.
Fig. 6 is the right view of Fig. 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
See Fig. 1,2,3, plane curve beam bridge anti-creep moves stopping means and comprises: upper anchor plate (1), stiffened steel plates (2), spacing steel plate (3), pier stud connect anchor plate (4), inner side steel plate (5), medial roof steel plate (6), sideslip motion block (7), outside plate (8), top steel plate, outside (9), outside slip motion block (10), side gussets (11), corrosion resistant plate and tetrafluoro slide plate slides friction pair (12), dust cover (13), inner side steel plate high-strength bolt (14), side steel plate high-strength bolt (15) and push up steel plate bolt (16); The spacing steel plate (3) that the upper anchor plate (1) that horizontal direction is arranged and the stiffened steel plates (2) and vertical direction that are positioned at spacing steel plate (3) both sides, top are arranged forms entirety by welding, and upper anchor plate (1) is bolted and is installed on bottom plane of main girder; Pier stud connects anchor plate (4) and is welded to connect with pier stud top encased steel plate; Inner side steel plate (5) is connected anchor plate (4) by inner side steel plate high-strength bolt (14) with pier stud and connects; Outside plate (8) is connected with inner side steel plate (5) bolt with side steel plate high-strength bolt (15) by side gussets (11); Sideslip motion block (7), outside slip motion block (10) are positioned on the inner side steel plate (5) of L shape and the outside plate (8) of L shape respectively, and the one side that medial and lateral sliding shoe (7), (10) contact with spacing steel plate (3) is plane, and another side is cambered surface; Top steel plate, medial and lateral (6), (9) are placed in above medial and lateral sliding shoe (7), (10), and fix with top steel, medial and lateral steel plate (5), (8) of top steel plate bolt (16) and L shape together form the cavity protecting medial and lateral sliding shoe (7), (10); Spacing steel plate (3) inserts between the medial and lateral steel plate (5) of limit assembly, (8) and medial and lateral sliding shoe (7), (10); Described medial and lateral sliding shoe (7), (10) all arrange corrosion resistant plate and tetrafluoro slide plate slides friction pair (12) with each contact surface of medial and lateral steel plate (5), (8), spacing steel plate (3).Anti-creep moves stopping means by assembled connection, can meet can check, easily maintenance, can keep in repair, removable requirement.This installation weight is comparatively light, little on the impact of pier stud supporting capacity.
Anti-creep moves stopping means connection layout see Fig. 4,5,6.Described each parts all adopt general steel plate or the steel plate member through simple processing, connect for welding or bolt connect, make simple and convenient assembly quick, be easy to batch production, can install by modularization making between component.
Inside limit assembly, steel plate (5) or outside plate (8) install graduated scale, directly can read bridge construction longitudinal direction or tangential displacement value under temperature action.
Pier stud connects anchor plate (4) and is welded to connect with pier stud top outsourcing strengthening steel slab, inner side steel plate (5) is connected anchor plate (4) bolt with pier stud by inner side steel plate high-strength bolt (14), installs sideslip motion block (7); Side gussets (11) is connected with outside plate (8) and inner side steel plate (5) bolt by side steel plate high-strength bolt (15); Outside slip motion block (10) is installed, connects medial roof steel plate (6) and top steel plate, outside (9) by top steel plate bolt (16); Each contact surface is equipped with corrosion resistant plate and tetrafluoro slide plate slides friction pair (12), finally installs dust cover (13), see Fig. 3.
This device is installed on both sides inside and outside the direction across bridge of pier stud top, and the spacing steel plate in top is connected with girder, and lower limit assembly is connected with pier stud, spacing steel plate inserts between inside and outside steel plate and inside and outside sliding shoe, sliding shoe one side is plane, and another side is cambered surface, and each contact surface arranges sliding friction pair; Stopping means can reach constraint Normal Displacement, tangentially can be free to slide, and meets plane curve beam body rotatably mounted.
Plane curve beam bridge anti-creep moves reserved certain space between the spacing steel plate (3) of stopping means and sideslip motion block (7), outside slip motion block (10), ensure that structure Normal Displacement under normal temperature action is unrestricted, a restrictive curve beam bridge is climbed due to the normal direction that cannot recover under long term and is moved.
The upper anchor plate (1) that plane curve beam bridge anti-creep moves stopping means is anchored in girder by crab-bolt, at the kingpost baseplate place that anchoring condition is poor, first can carry out kingpost baseplate steel-bonded reinforcement, upper anchor plate (1) is welded at the bottom of girder.Pier stud connects anchor plate (4) and is welded in pier top anchor ear, welds after should carrying out Baogang without the Dun Ding of stirrup.After girder fulcrum place horizontal restrain, each pier can be made to share bridge construction normal direction seismic forces, increase bridge construction shock resistance.
Plane curve beam bridge anti-creep moves stopping means and is applicable to plane curve beam bridge that is that middle supporting adopts the existence of bi-directional movable bearing or fixed bearing to climb to move disease hidden danger or fixed bearing bearing capacity deficiency, can solve the problem of bridge lateral Seismic Bearing Capacity deficiency in conjunction with pier stud seismic hardening, the overturning or slip resistance analysis that also can be used for only post supporting plane Curved Beam Bridge is reinforced simultaneously.
Plane curve beam bridge anti-creep moves stopping means and arranges dust cover (13), and protection stopping means internal slide friction pair, increases the durability of stopping means.Inner side steel plate (5) or outside plate (8) install graduated scale, in bridge maintenance or Daily Round Check, directly can read bridge construction longitudinal direction or tangential displacement value under temperature action.
Plane curve beam bridge anti-creep moves stopping means, and outward appearance is merrily and lightheartedly attractive in appearance, can Fast Installation, and device construction is less for traffic impact under bridge, does not affect traffic on bridge.
Embodiment one
A plane curve beam in the overpass bridge of W. 2nd Ring Road, Beijing, upper structure type is cast-in-situ prestressed concrete continuous box girder, sweep 220m, span setting is: 31.415+31.415+26.75+24.79+28.42+29.36+21.14+19.31 rice, long 212.6 meters of connection.Bridge substructure abutment pier adopts the bicylindrical bent cap on drilled pile cushion cap foundation, and middle pier is bicylindrical concrete pier on drilled pile cushion cap foundation or single cylindrical steel tube concrete knoll, pier stud diameter D=1.3 ~ 2.0 meter; In this bridge, supporting arranges 2 consolidation piers, and all the other each fulcrums are all arranged as bi-directional movable bearing, abutment pier bent cap are arranged tetrafluoro sliding bearing.
According to existing bridge design specification this bridge carried out to the Displacement Analysis under spatial model, Curved Beam Bridge at prestressing force, shrink, creep, under the effect of temperature and centrifugal force, overall generation is to the displacement outside curve, due to factors such as friction of bearing, the effect making girder produce contrary displacement is difficult to its displacement is recovered, along with the growth of time, displacement can be increasing; This kind " is climbed and is moved " disease and make girder lateral displacement close to bi-directional movable bearing lateral displacement limiting value; " climb and move " disease continuation development and will have a strong impact on bearing supporting capacity, notably can produce beam danger of toppling.Because under normal temperature effect, girder beam body Normal Displacement is less, can plane curve beam bridge anti-creep be added along girder normal direction and move stopping means in both sides inside and outside middle supporting place pier stud top, by constraint fulcrum place girder lateral displacement, prevent girder from climbing further and move.
In engineering construction, plane curve beam bridge anti-creep moves the upper anchor plate of stopping means, spacing stiffener and spacing steel plate at the prefabricated welding assembly of component factory batch, all the other components precasting yard processing examination assembled qualified after, transport on-the-spot, all steel beam column adopt galvanized anticorrosive to ensure endurance quality in component factory.In Practical Project, push up pre-buried anchor bolt bottom encased steel plate, girder arranging in bi-directional movable bearing Dun Dun, apply small-sized jacking equipment, hand fit carries out the installation of stopping means branch.First lower anchoring limiting plate is welded in pier stud design attitude during in-site installation, successively all the other limit assembly components with bolts, spacing for upper anchorage element steel plate is inserted preformed hole position simultaneously, go up anchor plate the most at last and be fixed on design attitude at the bottom of girder beam.
Anti-creep moves all construction contents of stopping means all to carry out under bridge, and construction is simple, and operation side is little, and the duration is short, under bridge and bridge deck traffic substantially without affecting.
This device operative constraint lateral displacement of girder, its light structure, total tune is attractive in appearance; Reinforce at the bottom of column, this device solves bridge lateral anti-seismic problem simultaneously.
Claims (5)
1. plane curve beam bridge anti-creep moves a stopping means, and it comprises: upper anchor plate (1), stiffened steel plates (2), spacing steel plate (3), pier stud connect anchor plate (4), inner side steel plate (5), medial roof steel plate (6), sideslip motion block (7), outside plate (8), top steel plate, outside (9), outside slip motion block (10), side gussets (11), corrosion resistant plate and tetrafluoro slide plate slides friction pair (12), dust cover (13), inner side steel plate high-strength bolt (14), side steel plate high-strength bolt (15) and push up steel plate bolt (16); It is characterized in that: the spacing steel plate (3) that the upper anchor plate (1) that horizontal direction is arranged and the stiffened steel plates (2) and vertical direction that are positioned at spacing steel plate (3) both sides, top are arranged forms entirety by welding, and upper anchor plate (1) is bolted and is installed on bottom plane of main girder; Pier stud connects anchor plate (4) and is welded to connect with pier stud top encased steel plate; Inner side steel plate (5) is connected anchor plate (4) by inner side steel plate high-strength bolt (14) with pier stud and connects; Outside plate (8) is connected with inner side steel plate (5) bolt with side steel plate high-strength bolt (15) by side gussets (11); Sideslip motion block (7), outside slip motion block (10) are positioned on the inner side steel plate (5) of L shape and the outside plate (8) of L shape respectively, and the one side that medial and lateral sliding shoe (7), (10) contact with spacing steel plate (3) is plane, and another side is cambered surface; Top steel plate, medial and lateral (6), (9) are placed in above medial and lateral sliding shoe (7), (10), and fix with top steel, medial and lateral steel plate (5), (8) of top steel plate bolt (16) and L shape together form the cavity protecting medial and lateral sliding shoe (7), (10); Spacing steel plate (3) inserts between the medial and lateral steel plate (5) of limit assembly, (8) and medial and lateral sliding shoe (7), (10); Described medial and lateral sliding shoe (7), (10) all arrange corrosion resistant plate and tetrafluoro slide plate slides friction pair (12) with each contact surface of medial and lateral steel plate (5), (8), spacing steel plate (3).
2. a kind of plane curve beam bridge anti-creep according to claim 1 moves stopping means, it is characterized in that: the sideslip motion block (7) in described spacing steel plate (3) and lower limit assembly, outside slip motion block interspace between (10) in advance.
3. a kind of plane curve beam bridge anti-creep according to claim 1 moves stopping means, it is characterized in that: upper anchor plate (1) is directly anchored in bottom plane of main girder by crab-bolt; At the kingpost baseplate place that anchoring condition is poor, at kingpost baseplate steel-bonded reinforcement, upper anchor plate (1) is welded at the bottom of girder; Pier stud connects the Dun Ding that anchor plate (4) is welded in stirrup.
4. a kind of plane curve beam bridge anti-creep according to claim 1 moves stopping means, it is characterized in that: dust cover (13) is placed in above top steel plate, medial and lateral (6), (9), fixes equally with top steel.
5. a kind of plane curve beam bridge anti-creep according to claim 1 moves stopping means, it is characterized in that: inside limit assembly, steel plate (5) or outside plate (8) install graduated scale.
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| CN104674646B (en) * | 2015-02-06 | 2016-05-18 | 彭晶蓉 | A kind of Bridge Seismic buffer structure and manufacture method thereof |
| CN104878686B (en) * | 2015-06-04 | 2016-08-17 | 北京市市政工程研究院 | Prevent the construction method of Curved Beam Bridge horizontal comparison device |
| CN105951581B (en) * | 2016-06-29 | 2017-05-31 | 湖南科技大学 | Energy consumer is inhaled from opening speed type waterpower |
| CN105908619B (en) * | 2016-06-29 | 2017-09-05 | 湖南科技大学 | Energy consumer is inhaled from displacement type adjustable type waterpower is opened |
| CN107747274B (en) * | 2017-11-16 | 2023-04-11 | 大连理工大学 | Bent beam bridge limiting device and method |
| CN112985627A (en) * | 2021-02-08 | 2021-06-18 | 中铁工程设计咨询集团有限公司 | Temperature displacement scale for determining pre-deviation of bridge bearing |
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| JP2003027427A (en) * | 2001-07-13 | 2003-01-29 | Ps Mitsubishi Construction Co Ltd | Method for constructing elevated railway bridge |
| JP4719625B2 (en) * | 2006-06-06 | 2011-07-06 | ショーボンド建設株式会社 | Installation method of bridge fall prevention device |
| CN102787555B (en) * | 2012-09-03 | 2015-08-26 | 燕斌 | Limit skateboard bearing |
| CN103147389B (en) * | 2013-03-15 | 2015-06-24 | 天津市市政工程设计研究院 | Novel bridge protecting facility |
| CN203393605U (en) * | 2013-06-05 | 2014-01-15 | 西安中交土木科技有限公司 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support |
| CN203755139U (en) * | 2014-03-21 | 2014-08-06 | 北京市市政工程设计研究总院有限公司 | Creeping-prevention limiting device of planar curved bridge |
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