CN102787555A - Limiting slide plate support seat - Google Patents

Limiting slide plate support seat Download PDF

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Publication number
CN102787555A
CN102787555A CN201210321077XA CN201210321077A CN102787555A CN 102787555 A CN102787555 A CN 102787555A CN 201210321077X A CN201210321077X A CN 201210321077XA CN 201210321077 A CN201210321077 A CN 201210321077A CN 102787555 A CN102787555 A CN 102787555A
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CN
China
Prior art keywords
steel
slide plate
plate
projection
bolt
Prior art date
Application number
CN201210321077XA
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Chinese (zh)
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CN102787555B (en
Inventor
燕斌
Original Assignee
燕斌
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Publication date
Application filed by 燕斌 filed Critical 燕斌
Priority to CN201210321077.XA priority Critical patent/CN102787555B/en
Publication of CN102787555A publication Critical patent/CN102787555A/en
Application granted granted Critical
Publication of CN102787555B publication Critical patent/CN102787555B/en

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Abstract

The invention relates to a limiting slide plate support seat. The support seat is composed of a top steel assembly, a bottom steel assembly, a PTFE (Polytetrafluoroethylene) rubber slide plate, a steel bar and an anchoring device; the top steel assembly is formed by penetrating a top anchor rod into a top sleeve and a top steel plate and then bolting the top anchor rod with a top anchor bolt; the bottom steel assembly is formed by penetrating a bottom anchor rod into a bottom sleeve and a bottom steel plate and then bolting the bottom anchor rod with a bottom anchor bolt; the PTFE rubber slide plate is formed by adhering one layer of PTFE slide plate to the top of a stiffened rubber plate; and the steel bar and the anchoring device are formed by penetrating the steel bar into a top convex block and a bottom convex block and then anchoring the steel bar via a gasket and a nut. The limiting slide plate support seat related by the invention is clear in principle and simple and convenient in application and can meet a deflection requirement of a bridge in a normal operation stage and limit the overlarge longitudinal displacement of the bridge under the action of an earthquake.

Description

The limit skateboard bearing
Technical field:
The present invention relates to a kind of bridge pad, particularly a kind of limit skateboard bearing.
Background technology:
The slide plate bearing is to use one of the most common support style in the bridge engineering, is arranged on the end of continuous girder bridge usually.The characteristics of slide plate bearing are can certain vertical deflection function be provided for bridge again for bridge provides the vertical support function.Vertically displacement is a kind of displacement demands that bridge construction must adapt to; This is because in effect such as temperature, automobile braking force down, bridge can take place to indulge bridge to displacement, if bearing limits it; Then can cause the rapid increase of bridge construction internal force, and then influence the normal function of use of bridge.
For variable actions such as temperature, automobile braking force, under accidental actions such as earthquake, bigger horizontal displacement will take place in bridge, also bigger horizontal movement will take place as the slide plate bearing of upper and lower part structural connection.When the horizontal movement of slide plate bearing designs displacement greater than it, the slide plate bearing will destroy, and bridge superstructure will continue the occurred level motion.If the bearing length between superstructure and substructure is during less than the horizontal movement of superstructure, with the phenomenon that superstructure breaks away from, falls from substructure takes place, the beam that promptly falls destroys; If during the generation counter motion between the adjacent superstructure, destruction will bump.In Wenchuan earthquake, fall beam and impact wreckage are the principal modes of bridge earthquake.Investigation finds that the destruction of slide plate bearing is the main cause that causes falling beam and impact wreckage.
Yet the slide plate bearing that present bridge engineering is adopted does not all possess limit function, for Structure Safety for Bridge under the geological process hides some dangers for.Therefore, be necessary the slide plate bearing is furtherd investigate, improve its anti-seismic performance.
Summary of the invention:
In view of this, spy of the present invention discloses a kind of limit skateboard bearing.This bearing had both kept the vertical support function and the horizontal displacement function of common slide plate bearing, had increased the displacement restriction function simultaneously, for bridge provides reliable guarantee in the safety under the geological process.
Design principle of the present invention is: slide plate is propped up seat body be divided into two in the plane, between a seat body of two same sizes, stopping means is set; Stopping means must guarantee the normal horizontal slip function of bearing in spacing, therefore between top projection and bottom projection, reserve certain distance; The design of stopping means need be satisfied the needs of direction across bridge displacement simultaneously, so the opening diameter of top projection and bottom projection should be slightly larger than the diameter of rod iron; Convertibility is considered in the design of stopping means, therefore adopts bolt that rod iron has been carried out anchoring.
Working mechanism of the present invention is: bridge construction is under normal operational phase and design geological process; Slide plate props up seat body and relies on very little frictional force occurred level displacement between polyfluortetraethylene plate and the corrosion resistant plate, and the realization of between rod iron, sliding of separately projection is passed through in the relative displacement of top steel assembly and bottom steel assembly; Under the rarely occurred earthquake effect, the horizontal movement of this bearing further increases, and when the top projection contacted with the bottom projection, rod iron began to play a role; Rod iron relies on its powerful resistance to tension to limit the increase of horizontal movement, has guaranteed bearing safety, the generation of prevented to fall beam and impact wreckage; Simultaneously, under the lateral seismic effect, the shear resistance of rod iron has limited the increase of lateral seismic displacement, has guaranteed structural safety.
Limit skateboard bearing of the present invention is by top steel assembly, bottom steel assembly; Tetrafluoro rubber slide plate, rod iron and anchor device are formed, and it is characterized in that: said top steel assembly passes top sleeve and top steel plate by roll bolt; Adopt bolt to form with the top crab-bolt, wherein top projection, corrosion resistant plate, top sleeve and top steel plate all adopt welding, and said bottom steel assembly passes bottom sleeves and bottom steel plate by the bottom anchor pole; Adopt bolt to form with the bottom crab-bolt; Wherein bottom projection, bottom sleeves and bottom steel plate all adopt welding, and said tetrafluoro rubber slide plate is formed by adhering to one deck polytetrafluoroethylene (PTFE) slide plate at the rubber tile top of putting more energy into, and the rubber tile of putting more energy into adopts bolt to be connected with the bottom steel plate; Said rod iron and anchor device pass top projection and bottom projection by rod iron, carry out anchoring through pad and nut and form.
The principle of the invention is clear and definite, uses easyly, can satisfy bridge in the displacement requirement of normal operation stage, can limit bridge again and excessive vertical bridge take place to displacement under geological process.
Description of drawings:
Fig. 1 is the sectional drawing of limit skateboard bearing.
Fig. 2 is the vertical view of limit skateboard bearing.
Fig. 3 is the A-A sectional drawing of limit skateboard bearing.
Fig. 4 is the B-B sectional drawing of limit skateboard bearing.
The specific embodiment:
Limit skateboard bearing of the present invention is by top steel assembly; The bottom steel assembly, tetrafluoro rubber slide plate, rod iron and anchor device are formed; It is characterized in that: said top steel assembly passes top sleeve 4 and top steel plate 1 by roll bolt 5; Adopt formation with top crab-bolt 6 bolts, wherein top projection 2, corrosion resistant plate 3, top sleeve 4 all adopt welding with top steel plate 1, and said bottom steel assembly passes bottom sleeves 9 and bottom steel plate 7 by bottom anchor pole 10; Adopt bolt to form with bottom crab-bolt 11; Wherein bottom projection 8, bottom sleeves 9 all adopt welding with bottom steel plate 7, and said tetrafluoro rubber slide plate is formed by adhering to one deck polytetrafluoroethylene (PTFE) slide plate 13 at rubber tile 12 tops of putting more energy into, and the rubber tile 12 of putting more energy into adopts bolt to be connected with bottom steel plate 7; Said rod iron and anchor device pass top projection 2 and bottom projection 8 by rod iron 14, carry out anchoring through pad 15 and nut 16 and form.
In the present embodiment, the thickness of polytetrafluoroethylene (PTFE) slide plate 13 is got 2 ~ 4mm, and 3 of corrosion resistant plates are provided with silicone grease lubrication oil to form the Frictional Slipping face.
In the present embodiment, the primary clearance of vertical rod iron 14 directions requires to confirm according to the lateral deflection of bridge.
In the present embodiment, top projection 2 and bottom projection 8 equal the design slippage of polytetrafluoroethylene (PTFE) slide plate 13 in the initial separation of rod iron 14 directions.
In the present embodiment, this bearing is arranged at the end of continuous girder bridge, is connected with girder through top steel assembly, is connected with bridge pier or abutment through the bottom steel assembly.

Claims (5)

1. limit skateboard bearing; By top steel assembly; The bottom steel assembly, tetrafluoro rubber slide plate, rod iron and anchor device are formed; It is characterized in that: said top steel assembly passes top sleeve (4) and top steel plate (1) by roll bolt (5); Adopt bolt to form with top crab-bolt (6), wherein top projection (2), corrosion resistant plate (3), top sleeve (4) all adopt welding with top steel plate (1), and said bottom steel assembly passes bottom sleeves (9) and bottom steel plate (7) by bottom anchor pole (10); Adopt bolt to form with bottom crab-bolt (11); Wherein bottom projection (8), bottom sleeves (9) all adopt welding with bottom steel plate (7), and said tetrafluoro rubber slide plate is formed by adhere to one deck polytetrafluoroethylene (PTFE) slide plate (13) at the rubber tile of putting more energy into (12) top, and the rubber tile of putting more energy into (12) adopts bolt to be connected with bottom steel plate (7); Said rod iron and anchor device pass top projection (2) and bottom projection (8) by rod iron (14), carry out anchoring through pad (15) and nut (16) and form.
2. limit skateboard bearing according to claim 1 is characterized in that: the thickness of polytetrafluoroethylene (PTFE) slide plate (13) is got 2 ~ 4mm, and silicone grease lubrication oil is set to form the Frictional Slipping face between corrosion resistant plate (3).
3. limit skateboard bearing according to claim 1 is characterized in that: the primary clearance of vertical rod iron (14) direction requires to confirm according to the lateral deflection of bridge.
4. limit skateboard bearing according to claim 1 is characterized in that: top projection (2) and bottom projection (8) equal the design slippage of polytetrafluoroethylene (PTFE) slide plate (13) in the initial separation of rod iron (14) direction.
5. according to the described limit skateboard bearing of claim 1 ~ 4, it is characterized in that: this bearing is arranged at the end of continuous girder bridge, is connected with girder through top steel assembly, is connected with bridge pier or abutment through the bottom steel assembly.
CN201210321077.XA 2012-09-03 2012-09-03 Limit skateboard bearing CN102787555B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210321077.XA CN102787555B (en) 2012-09-03 2012-09-03 Limit skateboard bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210321077.XA CN102787555B (en) 2012-09-03 2012-09-03 Limit skateboard bearing

Publications (2)

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CN102787555A true CN102787555A (en) 2012-11-21
CN102787555B CN102787555B (en) 2015-08-26

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Application Number Title Priority Date Filing Date
CN201210321077.XA CN102787555B (en) 2012-09-03 2012-09-03 Limit skateboard bearing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835226A (en) * 2014-03-21 2014-06-04 北京市市政工程设计研究总院有限公司 Plane curve girder bridge creeping-preventing limiting device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001234977A (en) * 2000-02-22 2001-08-31 Tokai Rubber Ind Ltd Post-slide type rubber support device
CN101440601A (en) * 2008-12-31 2009-05-27 北京交通大学 Position adjustable rail beam bearing
CN201520939U (en) * 2009-11-04 2010-07-07 衡水市橡胶总厂有限公司 Unidirectional large-displacement bridge seismic isolation rubber support
JP2010174541A (en) * 2009-01-30 2010-08-12 Kawakin Core-Tech Co Ltd Roller-type base-isolated bearing
CN202323688U (en) * 2011-11-24 2012-07-11 江苏扬州合力橡胶制品有限公司 Plate type rubber support

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001234977A (en) * 2000-02-22 2001-08-31 Tokai Rubber Ind Ltd Post-slide type rubber support device
CN101440601A (en) * 2008-12-31 2009-05-27 北京交通大学 Position adjustable rail beam bearing
JP2010174541A (en) * 2009-01-30 2010-08-12 Kawakin Core-Tech Co Ltd Roller-type base-isolated bearing
CN201520939U (en) * 2009-11-04 2010-07-07 衡水市橡胶总厂有限公司 Unidirectional large-displacement bridge seismic isolation rubber support
CN202323688U (en) * 2011-11-24 2012-07-11 江苏扬州合力橡胶制品有限公司 Plate type rubber support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835226A (en) * 2014-03-21 2014-06-04 北京市市政工程设计研究总院有限公司 Plane curve girder bridge creeping-preventing limiting device

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Publication number Publication date
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