CN203807936U - Tensile anti-beam-falling seismic reduction and isolation bearing - Google Patents
Tensile anti-beam-falling seismic reduction and isolation bearing Download PDFInfo
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- CN203807936U CN203807936U CN201420236709.7U CN201420236709U CN203807936U CN 203807936 U CN203807936 U CN 203807936U CN 201420236709 U CN201420236709 U CN 201420236709U CN 203807936 U CN203807936 U CN 203807936U
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- base plate
- tension
- bearing
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- draw ring
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Abstract
The utility model belongs to the technical field of bridge bearings, and discloses a tensile anti-beam-falling seismic reduction and isolation bearing. The bearing mainly and structurally comprises an upper base plate, a bottom plate and a sliding part clamped between the upper base plate and the bottom plate, the bottom plate is composed of a concave sphere/cylindrical body, the sliding part is composed of a rotator and a hyperbolic ball/cylindrical body, a sliding tensile structure which is composed of a peripheral concave and convex structure and provided with a planar sliding pair is arranged between the upper portion of the rotator and the upper base plate, and the lower portion of the rotator is a curve/cylindrical structure. The hyperbolic ball/cylindrical body is clamped between the rotator and the bottom plate which form a corresponding curved surface sliding pair. A tensile sliding pair mechanism is arranged between the rotator body and the bottom surface of the bottom plate. When the bearing of the structure is under vertical tension force, parts of the bearing are prevented from colliding with each other; during a seism, the bearing has a seismic reduction and isolation function, and a bridge, the bearing and a pier can be enabled not to be separated always.
Description
Technical field
The utility model belongs to bridge pad technical field, relates in particular to a kind of tension and compression girder falling vibration absorption and isolation support.
Background technology
Bearing is the vitals that connects bridge and bridge pier, and it is except bearing bridge vertical pressure, and for meeting the vertical tension demand occurring in bridge normal course of operation, some bearing also needs to possess tension function.The mode tensile supporting seat using is at present for meeting the requirement of bearing corner, and tensile structure place must be provided with certain interval, and when bearing tension, bearing is prone to tensile structure place and first clashes into tension phenomenon again, causes tensile structure fragile.
In addition, China is an earthquake-prone region, country to bridge earthquake resistance, shock mitigation system research is long-standing, along with the understanding intensification that earthquake is damaged, by antidetonation, to shock-damping structure, studied gradually.Particularly after 5.12 Wenchuan violent earthquakes, country has proposed to guarantee in earthquake that bridge beam body is not fallen, integral bridge does not collapse or has produced serious structural damage and can be for maintaining explicitly calling for of the traffic of meeting an urgent need after interim reinforcing the bridge earthquake resistance target of setting up defences.Link bearing as bridge, bridge pier plays vital effect.For this reason, there is at present the vibration absorption and isolation support of various structures, damage bridge being caused to reduce earthquake.These seismic isolation and reduction structure bearings, at damping, shock insulation, reduce bridge collapse aspect and have played certain effect.But allly subtract, although shock isolating pedestal can damping, does not all subtract in shock insulation process, guarantees that beam body, bearing, bridge pier three link together all the time, prevent the structure of beam.At present, the method that solution earthquake centre beam body falls is to be equipped with in addition anti-fall girder apparatus.And such method causes huge structure, cost increases, and is converted into antidetonation system by shock absorption system, finally bridge pier is damaged, and severe patient causes whole bridge collapse.
In sum, for preventing that seismic process central sill body from falling, whole bridge collapse, be badly in need of tension and compression girder falling vibration absorption and isolation support structure.
Utility model content
The purpose of this utility model is just to provide normal use of a kind of bearing and is subject to vertical tension to do the used time, avoid bearing component to occur each other clash into and come off, during coming earthquake, both there is the shock insulation function of subtracting, again can be in seismic process, bridge, bearing, bridge pier are not departed from all the time, prevent the tension and compression girder falling vibration absorption and isolation support that beam body falls.
For achieving the above object, the technical scheme that the utility model adopts is:
A tension and compression girder falling vibration absorption and isolation support, its structure comprises upper base plate (3), base plate (11) and is sandwiched in slide unit between the two;
Described base plate is that recessed ball/column-shape showering forms;
Described slide unit consists of rotor (4) and hyperbolic ball/column-shape showering; Wherein, between described rotor top and described upper base plate, for both sides concave, convex structure forms the slippage tensile structure with planar slide pair, bottom is curve/cylindrical structure; Described hyperbolic ball/column-shape showering is sandwiched between described rotor and base plate, and forms the secondary stretch-proof organization of corresponding Curved Surface Sliding with both;
Between the bottom surface of described rotor (4) and described base plate, be provided with the secondary stretch-proof organization of slippage;
Between described base plate and slide unit, be provided with and make both relatively-stationary shearing parts.
The additional technical feature that forms above-mentioned tension and compression girder falling vibration absorption and isolation support also comprises:
---the secondary stretch-proof organization of described tension slippage comprises that concentric hoop/limit (13), its end corresponding with its curve/cylindrical structure of being arranged on described rotor are corresponding curve/cylindrical structure and are pressed in the shearing draw ring (12) that forms sliding pair on this concentric hoop/limit and the damping draw ring (9) that forms with it arc scrobicular ring/bar (14), described base plate snaps in this arc scrobicular ring/bar (14) and can rotate/slide, passes through described shearing parts relative fixing between described shearing draw ring and base plate;
---described shearing draw ring (12) and to form with it between the damping draw ring of arc scrobicular ring/bar be two body structures;
---described tension slippage vice mechanism comprises the shearing draw ring (12) that is arranged at the concentric hoop/limit (13) corresponding with its curve/cylindrical structure on described rotor and forms with it arc scrobicular ring/bar (14), described base plate snaps in this arc scrobicular ring/bar and can rotate/slide, passes through described shearing parts relative fixing between described hyperbolic ball/column-shape showering and base plate;
---be respectively arranged with the upper and lower resistance to plucking assembly being formed by some cylinders forming on the upper base plate (3) of described bearing and base plate (11);
---described resistance to plucking assembly bottom be shaped as the structures such as column paripheral zone groove or pawl type.
A kind of tension and compression girder falling vibration absorption and isolation support provided by the utility model compared with prior art has the following advantages:
---because this bearing is provided with upper and lower resistance to plucking assembly, bearing and bridge, bearing and pier form respectively resistance to plucking layer, and the break-off that can effectively prevent between bearing and beam body, bridge pier three occurs;
---because this bearing is when rotating, upper base plate rotates with rotor, the tension fitting face that concave, convex integrated structure between the two forms is without considering its running clearance, adopt the gapless tension face design of upper base plate and rotor, can realize the gapless tension function in the normal use procedure of bearing;
---owing to forming the shearing draw ring of this bearing, be pressed on the concentric hoop/limit that forms rotor, and both overlapped positions adopt concentric structure design, realized the tension demand in bearing normal rotation process, during coming earthquake, shearing draw ring is along with rotor slides subtracting in the recessed spheroid concave surface of shock insulation of base plate of formation together, complete mutual conversion moving, potential energy, with this earthquake energy; Under rotor and the overlapped position effect of shearing draw ring, during earthquake generation vertical tension, do not depart from each other, realize and subtract the tension function in shock insulation process; Subtract the recessed spheroid of shock insulation and damping draw ring two workpiece and formed arc scrobicular ring/bar thereof and adopt equally concentric position Overlap design, both have formed another in seismic process of bearing and have subtracted shock insulation tensile structure; During coming earthquake, along subtracting, the recessed spheroid concave spherical surface of shock insulation moves bearing, potential energy converting and energy together with beam body, with this, subdues seismic energy; In moving, potential energy converting and energy, subdue in seismic energy process, damping draw ring slides along subtracting the recessed spheroid following table of shock insulation convex surface all the time, in sliding process, damping draw ring, all the time with to subtract the recessed spherical part of shock insulation overlapping, realizes with this vertical tension function of another layer subtracting in shock insulation process; Therefore, at above-mentioned three layers of tensile structure (when rotor and shear studs are designed to one, for double-deck tension assembly) acting in conjunction under, complete the drawing-resistant function in normal use and seismic process, realize in any case, bridge, bearing, pier three can interconnect, with the situation generation of this restrainer;
---after earthquake finishes, under beam body Action of Gravity Field, bearing, together with beam body, sets back along subtracting the recessed spheroid concave spherical surface of shock insulation; Guaranteed to rescue the coast is clear after shake, for shaking rear rescue, striven for the time.
In addition, the shock insulation principle that subtracts that forms this tension and compression girder falling vibration absorption and isolation support is, when earthquake generation and horizontal force surpass set-point, shear studs (or shear pin) is cut off, the Horizontal limiting constraint of bearing is disengaged, hyperbolic spherical surface body drives superstructure repeatedly to swing along subtracting the recessed spheroid concave spherical surface of shock insulation, moves, potential energy converting and energy, with this earthquake energy., repeatedly swing in slipping, concave spherical surface frictional resistance consumes again a part of earthquake energy meanwhile.Double action reaches the effect of subduing seismic energy, reduces seismic energy integral bridge is impacted with this.And potential energy can form restoring force, bearing is resetted.
Accompanying drawing explanation
Fig. 1 is the utility model tension and compression girder falling vibration absorption and isolation support the first structural representation;
Fig. 2 is the utility model tension and compression girder falling vibration absorption and isolation support the second structural representation.
The specific embodiment
Below in conjunction with accompanying drawing, tension and compression girder falling vibration absorption and isolation support provided by the utility model is described in further details.
As shown in Figure 1, be the structural representation of a kind of tension and compression girder falling vibration absorption and isolation support provided by the utility model.The structure that forms this tension and compression girder falling vibration absorption and isolation support comprises and is provided with upper base plate 3, to be isocentric circular arc by inside and outside wall the subtract base plate 11 that the recessed spheroid of shock insulation forms of indent annulus 15 and is sandwiched in the slide unit consisting of rotor 4 and hyperbolic spherical surface body 6 between the two.Wherein, rotor top is provided with the dome ring 16 snapping in above-mentioned indent annulus 15, make to form between upper base plate and rotor the slippage tensile structure of the secondary formation of planar slide that is provided with plane slide plate 2, rotor bottom is spherical structure, hyperbolic spherical surface body 6 is sandwiched between rotor and base plate, and form corresponding upper and lower Curved Surface Sliding pair with both, in above-mentioned two Curved Surface Sliding pairs, be provided with sphere slide plate 5 and subtract shock insulation slide plate 7.Between the bottom surface that subtracts the recessed spheroid of shock insulation of above-mentioned rotor 4 and formation base plate 11, be provided with tension slippage vice mechanism, this mechanism comprises and is arranged on rotor and concentric hoop 13 its curve face structural correspondence, be affixed on the damping draw ring 9 of the bottom surface of base plate, at above-mentioned concentric hoop 13 and 9 of damping draw rings, be provided with shearing draw ring 12, one end of this shearing draw ring is the spherical interior surface 17 corresponding and that form together revolute pair of the circular arc with concentric hoop 13, the other end and damping draw ring 9 are fixing by holding pin 8, and form arc scrobicular ring 14, base plate snaps in this arc scrobicular ring and can rotate or slide therein, and relative fixing by shearing parts between hyperbolic spherical surface body and base plate, simultaneously between above-mentioned shearing draw ring 12 and base plate, by shear studs 10, make the two relative fixing.Forming between the upper base plate 3 of bearing and bridge and between base plate 11 and pier, be provided with the upper and lower resistance to plucking assembly 1 being formed by some cylinders 18.
During coming earthquake, when the horizontal force bearing when bridge is greater than shear studs 10 shear strength, shear studs 10 is cut off with the base plate 11 bonding surface places that subtract the recessed spheroid of shock insulation at shearing draw ring 12, under the effect of seismic forces, shearing draw ring 12 carries beam body along the concave spherical surface reciprocally swinging that subtracts the base plate 11 of the recessed spheroid of shock insulation with rotor 4, in swing process, the damping draw ring 9 tightening together with shearing draw ring 12 by fastening bolt 8 also swings along sphere along the protruding sphere of base plate 11 following table that subtracts the recessed spheroid of shock insulation thereupon.By repeatedly swinging the conversion mutually repeatedly of carrying out kinetic energy, potential energy, with this earthquake energy.Weaken the impact of seismic forces to bridge pier, protected bridge pier, prevent the possibility of whole bridge collapse.At the concave spherical surface along subtracting the base plate 11 of the recessed spheroid of shock insulation, repeatedly swing in earthquake energy process, shearing draw ring 12 and rotor 4 lower ends are the tensile structure in overlapped composition one deck damping process and together with being closely attached to all the time.Equally, along the concave spherical surface that subtracts the base plate 11 of the recessed spheroid of shock insulation, repeatedly swing in earthquake energy process, under the effect of fastening bolt 8, the anti-vertical tension structure in damping draw ring 9 and the base plate 11 that subtracts the recessed spheroid of shock insulation also another layer of damping process of overlapped formation all the time.Two-layer damping and tensile structure is together with the slippage tensile structure forming between upper base plate 3, rotor 4 tops, under the acting in conjunction of upper and lower resistance to plucking assembly 1, in whole earthquake time-continuing process, beam body, bearing, bridge pier three are not departed from all the time each other, prevented that seismic process central sill body, bearing, bridge pier from causing the situation that beam body falls to occur because not specified seismic forces causes mutual disengaging.After earthquake, under beam body Action of Gravity Field, hyperbolic spherical surface body 6 automatically slides to original position along the concave spherical surface that subtracts the base plate 11 of the recessed spheroid of shock insulation with beam body together with bearing top, has realized the rear auto-reset function of shake.
Be illustrated in figure 2 the structural representation of the second tension and compression girder falling vibration absorption and isolation support provided by the utility model.In the structure that forms this bearing, comprise and be provided with upper base plate 3, to be isocentric circular arc by inside and outside wall the subtract base plate 11 that the recessed spheroid of shock insulation forms of indent annulus 15 and be sandwiched in the slide unit being formed by rotor 4 and hyperbolic spherical surface body 6 between the two.Wherein, rotor top is provided with the dome ring 16 snapping in above-mentioned indent annulus 15, make to form between upper base plate and rotor the slippage tensile structure of the secondary formation of planar slide that is provided with plane slide plate 2, rotor bottom is spherical structure, hyperbolic spherical surface body 6 is sandwiched between rotor and base plate, and form corresponding upper and lower Curved Surface Sliding pair with both, in above-mentioned two Curved Surface Sliding pairs, be provided with sphere slide plate 5 and subtract shock insulation slide plate 7.Between the bottom surface that subtracts the recessed spheroid of shock insulation of rotor 4 and formation base plate 11, be provided with by being connected and fixed and forming sphere arc scrobicular ring 14 by fastening bolt 8 with the rotor hoop 13 being structure as a whole and the damping draw ring 9 that is affixed on the bottom surface of base plate, base plate snaps in this arc scrobicular ring and can rotate or slide therein and forms tension sliding pair mechanism, and by shear studs 20, makes the two relative fixing between hyperbolic spherical surface body and base plate.Forming between the upper base plate 3 of bearing and bridge and between base plate 11 and pier, be provided with the upper and lower resistance to plucking assembly 1 being formed by some cylinders 18.
During coming earthquake; when the horizontal force bearing when bridge is greater than the shear strength of shear pin; shear pin 20 is cut off; hyperbolic spherical surface body 6, rotor 4 subtracting together with damping draw ring 9 in base plate 11 concave spherical surfaces of the recessed spheroid of shock insulation, slide carry out kinetic energy, potential energy is changed repeatedly; earthquake energy; reduce the input of seismic energy, thus protection beam body.In whole damping process, beam body, bearing, bridge pier are closely attached to together and not and depart from all the time, have not only realized subtracting shock insulation function but also having prevented that earthquake central sill body, bearing, bridge pier from departing from mutually causing beam body to fall.After earthquake, under beam body Action of Gravity Field, beam body, together with bearing top, slides to original position automatically along the concave spherical surface that subtracts the base plate 11 of the recessed spheroid of shock insulation, has realized auto-reset function.
In forming two kinds of tension and compression girder falling vibration absorption and isolation support structures of above-mentioned Fig. 1 and Fig. 2, in order further to improve the bond strength of the upper and lower resistance to plucking assembly 1 that formed by some cylinders 18 and bridge beam body and bridge pier, being shaped as column paripheral zone groove 19 or falling tooth type structures of its cylinder bottom.
Forming in addition in the structure of above-mentioned two kinds of tension and compression girder falling vibration absorption and isolation supports, can be both the spherical bearing of two kinds of Fig. 1 and Fig. 2---the upper base plate 3 that forms bearing is that square structure, rotor 4 are double arch sphericity structure, and rotor is cylindrical structure; Also can be cylindrical abutment---the upper base plate 3 that forms bearing is rectangular configuration, and the hyperbolic spherical surface body that forms slide unit becomes hyperboloid column body structure, and rotor is that rectangle column type structure, setting have become concentric shirt rim bar 13 with the concentric hoop 13 of bottom; Form base plate be two-sided be concentric column-shape showering structure.The bearing of this structure can reach equally the utility model proposes when earthquake, avoid the parts that form bearing to clash into each other, during coming earthquake, both there is the shock insulation function of subtracting, again can be in seismic process, the object that bridge, bearing, bridge pier are not departed from all the time.
Claims (6)
1. tension and compression girder falling vibration absorption and isolation support, its structure comprises upper base plate (3), base plate (11) and is sandwiched in slide unit between the two, it is characterized in that:
Described base plate is that recessed ball/column-shape showering forms;
Described slide unit consists of rotor (4) and hyperbolic ball/column-shape showering; Wherein, between described rotor top and described upper base plate, for both sides concave, convex structure forms the slippage tensile structure with planar slide pair, bottom is curve/cylindrical structure; Described hyperbolic ball/column-shape showering is sandwiched between described rotor and base plate, and forms the secondary stretch-proof organization of corresponding Curved Surface Sliding with both;
Between the bottom surface of described rotor (4) and described base plate, be provided with the secondary stretch-proof organization of slippage;
Between described base plate and slide unit, be provided with and make both relatively-stationary shearing parts.
2. a kind of tension and compression girder falling vibration absorption and isolation support according to claim 1, it is characterized in that: the secondary stretch-proof organization of described tension slippage comprises the concentric hoop/limit (13) corresponding with its curve/cylindrical structure being arranged on described rotor, its end is corresponding curve/cylindrical structure and is pressed in the shearing draw ring (12) that forms sliding pair on this concentric hoop/limit and the damping draw ring (9) that forms with it arc scrobicular ring/bar (14), described base plate snaps in this arc scrobicular ring/bar (14) and can rotate/slide, relative fixing by described shearing parts between described shearing draw ring and base plate.
3. a kind of tension and compression girder falling vibration absorption and isolation support according to claim 2, is characterized in that: described shearing draw ring (12) and to form with it between the damping draw ring of arc scrobicular ring/bar be two body structures.
4. a kind of tension and compression girder falling vibration absorption and isolation support according to claim 1, it is characterized in that: described tension slippage vice mechanism comprises the shearing draw ring (12) that is arranged at the concentric hoop/limit (13) corresponding with its curve/cylindrical structure on described rotor and forms with it arc scrobicular ring/bar (14), described base plate snaps in this arc scrobicular ring/bar and can rotate/slide, passes through described shearing parts relative fixing between described hyperbolic ball/column-shape showering and base plate.
5. tension and compression girder falling vibration absorption and isolation support according to claim 1, is characterized in that: be respectively arranged with the upper and lower resistance to plucking assembly consisting of some cylinders forming on the upper base plate (3) of described bearing and base plate (11).
6. tension and compression girder falling vibration absorption and isolation support according to claim 5, is characterized in that: described resistance to plucking assembly bottom be shaped as the structures such as column paripheral zone groove or pawl type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420236709.7U CN203807936U (en) | 2014-05-10 | 2014-05-10 | Tensile anti-beam-falling seismic reduction and isolation bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420236709.7U CN203807936U (en) | 2014-05-10 | 2014-05-10 | Tensile anti-beam-falling seismic reduction and isolation bearing |
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| CN203807936U true CN203807936U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420236709.7U Withdrawn - After Issue CN203807936U (en) | 2014-05-10 | 2014-05-10 | Tensile anti-beam-falling seismic reduction and isolation bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938542A (en) * | 2014-05-10 | 2014-07-23 | 衡水宝力工程橡胶有限公司 | Pulling pressing beam-falling-resisting seismic-isolation-and-reduction support |
| CN105442428A (en) * | 2015-11-30 | 2016-03-30 | 中铁大桥局集团有限公司 | Bridge with bracket tension and compression transfer beam and construction method of bridge |
| CN106207798A (en) * | 2016-09-18 | 2016-12-07 | 中国地震局工程力学研究所 | Towering porcelain knob type electrical equipment pendulum-type damping device |
| CN106996078A (en) * | 2017-05-15 | 2017-08-01 | 中国铁路设计集团有限公司 | Bridge anti-pulling anti-fall girder apparatus |
| CN113202204A (en) * | 2021-06-07 | 2021-08-03 | 范雷彪 | Pendulum type support with longitudinal buffering function |
-
2014
- 2014-05-10 CN CN201420236709.7U patent/CN203807936U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938542A (en) * | 2014-05-10 | 2014-07-23 | 衡水宝力工程橡胶有限公司 | Pulling pressing beam-falling-resisting seismic-isolation-and-reduction support |
| CN103938542B (en) * | 2014-05-10 | 2016-05-18 | 衡水宝力工程橡胶有限公司 | A kind of tension and compression girder falling vibration absorption and isolation support |
| CN105442428A (en) * | 2015-11-30 | 2016-03-30 | 中铁大桥局集团有限公司 | Bridge with bracket tension and compression transfer beam and construction method of bridge |
| CN106207798A (en) * | 2016-09-18 | 2016-12-07 | 中国地震局工程力学研究所 | Towering porcelain knob type electrical equipment pendulum-type damping device |
| CN106996078A (en) * | 2017-05-15 | 2017-08-01 | 中国铁路设计集团有限公司 | Bridge anti-pulling anti-fall girder apparatus |
| CN113202204A (en) * | 2021-06-07 | 2021-08-03 | 范雷彪 | Pendulum type support with longitudinal buffering function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20160518 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |