CN103696358B - The multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates - Google Patents
The multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates Download PDFInfo
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- CN103696358B CN103696358B CN201310693078.1A CN201310693078A CN103696358B CN 103696358 B CN103696358 B CN 103696358B CN 201310693078 A CN201310693078 A CN 201310693078A CN 103696358 B CN103696358 B CN 103696358B
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- ball
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- upper casing
- lower deck
- bracket
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Abstract
The present invention relates to the multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates, comprise exciting ball, upper casing, lower deck and ball bracket; Upper casing is fixed on bottom beam body, and lower deck is fixed on slip pier top, and leave gap between upper casing and lower deck, ball bracket is fixed on lower deck, and is stretched in upper casing by the ball bracket hole of upper casing sidewall, and holds up the exciting ball in upper casing; Under normal condition, exciting ball is positioned on ball bracket, and upper casing and lower deck are completely without retraining, to meet the longitudinal extension displacement of beam body under temperature action.When earthquake occurs, under earthquake acceleration effect, exciting ball disengaging ball stand falls in lower deck ball groove, hole clipping on upper cover box plate and exciting ball collide, thus the relative displacement between restraint beam body and slip pier, thus make that slip pier is collaborative bears geological process load, improve the shock resistance of continuous girder bridge.
Description
Technical field
The present invention relates to the multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates, be applicable to the newly-built or seismic hardening of railway bridge, road bridge, urban viaduct and various Large Scale and Continuous girder construction building, structure cooperative bearing under burst geological process can be made, improve structural entity anti-seismic performance.
Background technology
For reducing the seismic response of continuous girder bridge, improve the anti-seismic performance of continuous girder bridge, usually continuous girder bridge is adopted subtract, the glissando such as shock isolating pedestal and viscous damper, as lead core rubber support, viscous damper etc.But current conventional scheme does not all change the independent stand under load of continuous girder bridge anchor block, although other each slip piers have the state that shock resistance is not played and utilizes.In recent years, there is scholar to propose Lock-up device, consider from technical standpoint, can realize each pier cooperative bearing, but this device is not only with high costs, and the inspection in later stage is miscellaneous with maintenance, operation and maintenance cost high, the example being therefore applied to bridge earthquake resistance is less.
Summary of the invention
The object of the invention is to provide a kind of with earthquake ground motion acceleration activation, cheap, good endurance, the novel large-tonnage multiple span bridge beam bridge damping device being convenient to inspection and maintenance, utilize the present invention, the above-mentioned shortcoming and defect of existing seismic isolation device and existing technical existence can be overcome; During earthquake burst, each bridge pier of continuous girder bridge can be made to coordinate stressed under seismic loading, solve conventional design continuous girder bridge anchor block under longitudinal geological process stressed separately, anchor block antidetonation demand and the adverse effect such as bridge superstructure length travel is excessive.Utilize the present invention, can to design for continuous girder bridge and seismic hardening provides a kind of new design concept and technical guarantee, be applicable to new bridge design or old bridge seismic hardening;
Technical scheme of the present invention is: the multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates, and it is characterized in that: comprise exciting ball (3), upper casing (1), lower deck (2) and ball bracket (4).Upper casing (1) has inspection eye (9) and ball bracket hole (8) along the direction of bridge longitudinal direction, and upper casing (1) base plate leaves the hole clipping (7) of leaking down for exciting ball.Lower deck (2) immediately below upper casing (1), lower deck (2) just on hole clipping (7) place of casing be provided with the ball groove (10) that can block exciting ball (3).Ball bracket (4) is fixed on lower deck (2), and is stretched in upper casing by the ball bracket hole of upper casing (1) sidewall, and holds up the exciting ball (3) of (1) in upper casing.
Under normal condition, exciting ball (3) is positioned on ball bracket (4), upper casing (1) and lower deck (2) are completely without retraining, longitudinally can there is relative sliding along bridge in Liang Tiyu slip pier, to meet the dilatation demand along bridge longitudinal direction of bridge under temperature load effect.
When earthquake occurs, under earthquake acceleration effect, exciting ball (3) departs from ball bracket (4), fall and pass the hole clipping (7) on casing (1) base plate, falling in the ball groove (10) of lower deck (2).Described ball bracket (4) is the sphere that radius is identical with exciting ball (3) radius for placing the curved surface of exciting ball (3), and sphere depth calculation process is as follows: the grade of providing fortification against earthquakes first checking in region residing for bridge place according to seismic design provision in building code, obtain corresponding place earthquake acceleration peak value a, the seismic response acceleration peak value b that bridge construction seismic response analysis obtains slip Dun Dunding is carried out again according to place earthquake acceleration peak value a, through suitable reduction, get the activation accekeration c of accekeration as exciting ball (3) of 0.6b ~ 0.8b, the last degree of depth calculating sphere on bracket according to accekeration c.Described ball groove (10) for radius identical with exciting ball (3) radius, the degree of depth is more than or equal to the sphere of exciting ball (3) radius, and make exciting ball (3) and upper casing (1) base plate hole clipping (7) hole wall hit the first half being a little positioned at exciting ball (3).When collision occurs, the radius in cross section, point of impingement place is less than the radius of exciting ball (3), and the ball groove (10) on exciting ball the latter half and lower deck (2) is fitted completely, exciting ball (3) when collision occurs can be limited and depart from ball groove (10).
The operating principle of described device is as follows:
Principle one, under normal condition, exciting ball is positioned on ball bracket, and upper casing and lower deck, completely without retraining, change demand to meet this state bridge length travel;
Principle two, during earthquake burst, relies on acceleration effect, and exciting ball produces and rolls, and depart from ball bracket, the circular hole through upper cover box plate falls into the ball groove on lower deck.
Principle three, when exceeding limit value along the relative displacement of bridge longitudinal direction between upper casing and lower deck, on cover box plate, circular hole wall and exciting ball collide, and the seismic forces of beam body is passed to slip pier, thus slip pier are worked in coordination with bear geological process load.
Beneficial effect
Good effect of the present invention is: research and develop and a kind ofly to activate with earthquake ground motion acceleration, cheap, good endurance, be convenient to the novel large-tonnage continuous girder bridge damping device of Inspection and maintenance, utilize collision power transmission principle, make each bridge pier of continuous girder bridge can coordinate stressed under seismic loading, slip pier can play existing shock resistance.Be applicable to railway bridge, road bridge, urban viaduct and various Large Scale and Continuous girder construction building newly-built or reinforce, structure cooperative bearing under burst geological process can be made, improve the shock resistance of structure.
Accompanying drawing explanation
Fig. 1 a is the structural facades schematic diagram of normal operating conditions of the present invention;
Fig. 1 b is the texture edge schematic diagram of normal operating conditions of the present invention;
Fig. 2 is the locked structural representation of the exciting ball of the present invention when earthquake happens suddenly.
Wherein:
1-upper casing;
2-lower deck;
3-exciting ball;
4-ball bracket;
5-upper casing side plate;
6-above overlap box plate;
7-hole clipping;
8-ball bracket hole;
9-inspection eye;
10-ball groove;
11-beam body;
12-slip pier.
Detailed description of the invention
Be described in further detail below in conjunction with embodiment and accompanying drawing, but not as limitation of the invention.
As shown in Figure 1 a, 1 b, the multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates, comprises casing (1), lower deck (2), exciting ball (3), ball bracket (4) to the structure of the present embodiment.Upper casing (1) is fixed on beam body (11), upper casing (1) upper casing side plate (5) longitudinally leaves ball bracket hole (8) and inspection eye (9), upper cover box plate (6) central authorities leave circular hole clipping (7), the radius of hole clipping (7), slightly larger than exciting ball (3), can fall for exciting ball (3).Lower deck (2) is fixed on slip pier (12), lower deck (2) end face leaves the sphere diameter ball groove (10) identical with exciting ball (3), the degree of depth of ball groove (10) equals the radius of exciting ball (3), exciting ball (3) has a hemisphere to be exposed at lower deck (2) outside after falling into draw-in groove (10), gap between casing (1) and lower deck (2) is suitably set, exciting ball (3) can be collided with the hole clipping (7) of upper casing (1).Ball bracket (4) is fixed on lower deck (2), and stretch in casing (1) by ball bracket hole (8), and hold up exciting ball (3) in its end, be convenient to fall from hole clipping after exciting ball (3) departs from ball bracket 4 under geological process.
As shown in Figure 1 a, 1 b, under normal condition, exciting ball (3) is positioned on ball bracket (4), upper casing (1) and lower deck (2) can move freely, be in relative free state between beam body (11) with each slip pier (12), do not produce any constraint because of the displacement between beam body (11) and each slip pier (12).
As shown in Figure 2, during earthquake burst, the present invention is under earthquake acceleration effect, and exciting ball (3) produces and rolls, and falls and finally fallen into by hole clipping (7) in the ball groove (10) on lower deck (2) from ball bracket (4).When the relative displacement along bridge longitudinal direction under geological process between upper casing (1) and lower deck (2) is greater than the distance values of the hole wall of hole clipping (7) and exciting ball (3), exciting ball (3) collides with the hole wall of hole clipping (7), thus the relative displacement between restraint beam body (11) and slip pier (12), thus make that slip pier is collaborative bears geological process load.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention; anyly do not depart from technical solution of the present invention content; according to technical spirit of the present invention; any amendment done within the spirit and principles in the present invention, equivalent variations and modification, all should be considered as the technology category of the present invention program, all should be included in protection scope of the present invention.
Claims (1)
1. a multiple span bridge beam bridge damping device for earthquake acceleration activation, is characterized in that: comprise exciting ball (3), upper casing (1), lower deck (2) and ball bracket (4); Upper casing (1) is fixed on bottom beam body, lower deck (2) is fixed on slip pier top, gap is left between upper casing (1) and lower deck (2), the side plate of upper casing (1) has inspection eye (9) and ball bracket hole (8) along the direction of bridge longitudinal direction, and upper casing (1) base plate leaves the hole clipping (7) of leaking down for exciting ball (3); Lower deck (2) immediately below upper casing (1), lower deck (2) just on hole clipping (7) place of casing (1) be provided with the ball groove (10) that can block exciting ball (3); Ball bracket (4) is fixed on lower deck (2), and stretched in casing (1) by the ball bracket hole (8) of upper casing (1) sidewall, and hold up the exciting ball (3) in upper casing (1);
Under normal condition, exciting ball (3) is positioned on ball bracket (4), and upper casing (1) and lower deck (2) are completely without retraining;
When earthquake occurs, under earthquake acceleration effect, exciting ball (3) departs from ball bracket (4), fall and pass the hole clipping (7) on casing (1) base plate, falling in the ball groove (10) of lower deck (2); Described ball bracket (4) is the sphere that radius is identical with exciting ball (3) radius for placing the curved surface of exciting ball (3), and the sphere degree of depth obtain through Cable Power Computation according to exciting ball (3) the required earthquake acceleration that drops; Described ball groove (10) for radius identical with exciting ball (3) radius, the degree of depth is more than or equal to the sphere of exciting ball (3) radius, and make exciting ball (3) and upper casing (1) base plate hole clipping (7) hole wall hit the first half being a little positioned at exciting ball (3); When collision occurs, the radius in cross section, point of impingement place is less than the radius of exciting ball (3), and the ball groove (10) on exciting ball the latter half and lower deck (2) is fitted completely, exciting ball (3) when collision occurs can be limited and depart from ball groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693078.1A CN103696358B (en) | 2013-12-17 | 2013-12-17 | The multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693078.1A CN103696358B (en) | 2013-12-17 | 2013-12-17 | The multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103696358A CN103696358A (en) | 2014-04-02 |
| CN103696358B true CN103696358B (en) | 2015-08-05 |
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| CN201310693078.1A Active CN103696358B (en) | 2013-12-17 | 2013-12-17 | The multiple span bridge beam bridge damping device that a kind of earthquake acceleration activates |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586827B (en) * | 2016-01-29 | 2017-03-22 | 石家庄铁道大学 | Continuous beam bridge vibration reduction device with inertia force activating function |
| CN107217583B (en) * | 2017-07-24 | 2018-10-12 | 石家庄铁道大学 | A kind of continuous bridge strut damping device of acceleration activation |
| CN116537039B (en) * | 2023-07-04 | 2023-09-29 | 福建九鼎建设集团有限公司 | Anti-seismic beam falling prevention prefabricating device and manufacturing and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499170B2 (en) * | 2000-04-12 | 2002-12-31 | Jae Kwan Kim | Seismic load transmitting system based on impact mechanism for multi-span continuous bridges |
| CN101343858A (en) * | 2008-08-18 | 2009-01-14 | 中铁大桥勘测设计院有限公司 | Displacement mixed control apparatus of large-span bridge |
| KR20090102645A (en) * | 2008-03-25 | 2009-09-30 | 진형건설(주) | Elastic supporter for supporting a bridge which has an improved load dispersion performance |
| CN101748685A (en) * | 2008-12-05 | 2010-06-23 | 同济大学 | Slippage cylindrical soft steel damping device and application thereof on bridge girder |
| CN102619165A (en) * | 2012-03-20 | 2012-08-01 | 北京工业大学 | Shock-absorbing device for bridge security belt connection system |
| CN103306192A (en) * | 2013-06-15 | 2013-09-18 | 中南大学 | Bridge space energy consumption limit device |
-
2013
- 2013-12-17 CN CN201310693078.1A patent/CN103696358B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499170B2 (en) * | 2000-04-12 | 2002-12-31 | Jae Kwan Kim | Seismic load transmitting system based on impact mechanism for multi-span continuous bridges |
| KR20090102645A (en) * | 2008-03-25 | 2009-09-30 | 진형건설(주) | Elastic supporter for supporting a bridge which has an improved load dispersion performance |
| CN101343858A (en) * | 2008-08-18 | 2009-01-14 | 中铁大桥勘测设计院有限公司 | Displacement mixed control apparatus of large-span bridge |
| CN101748685A (en) * | 2008-12-05 | 2010-06-23 | 同济大学 | Slippage cylindrical soft steel damping device and application thereof on bridge girder |
| CN102619165A (en) * | 2012-03-20 | 2012-08-01 | 北京工业大学 | Shock-absorbing device for bridge security belt connection system |
| CN103306192A (en) * | 2013-06-15 | 2013-09-18 | 中南大学 | Bridge space energy consumption limit device |
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| CN103696358A (en) | 2014-04-02 |
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