CN205399192U - One -way mobile support in grades combats earthquake on inclined plane - Google Patents

One -way mobile support in grades combats earthquake on inclined plane Download PDF

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Publication number
CN205399192U
CN205399192U CN201620137122.XU CN201620137122U CN205399192U CN 205399192 U CN205399192 U CN 205399192U CN 201620137122 U CN201620137122 U CN 201620137122U CN 205399192 U CN205399192 U CN 205399192U
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China
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plane
guide frame
plane guide
bridge
middle steel
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CN201620137122.XU
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Chinese (zh)
Inventor
王同辉
张仪军
刘志祥
尧宗友
喻聪
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SICHUAN SHUANGJIAN ROAD & BRIDGE MACHINERY Co Ltd
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SICHUAN SHUANGJIAN ROAD & BRIDGE MACHINERY Co Ltd
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Abstract

The utility model provides an one -way mobile support in grades combats earthquake on inclined plane, includes limit stop, inclined plane guide structure, goes up the bedplate, middle steel sheet, pressing bearing rubber plate and bedplate down, limit stop sets up around last bedplate bottom surface, the bedplate is fixed in at inclined plane guide structure top through the connecting piece in, the bottom the vertical bridge of middle steel sheet to or the guide way offered to axis department of horizontal bridge in slide. The utility model discloses under normal operating conditions, adopt the gliding working method of direction to be used for eliminating the horizontal counter -force that the bridge displacement produced to keep inclined plane guide structure's antidetonation function, reduce and maintain frequency and maintenance cost. Under seismic action, have shock -resistant function in grades, reach the requirements for fortification against earthquake of " little shake is not bad, middle seisms can be repaiied, can do not shake " greatly.

Description

A kind of inclined-plane classification antidetonation one-way movable support
Technical field
This utility model relates to bridge pad field, especially a kind of inclined-plane classification antidetonation one-way movable support.
Background technology
Bridge pad is divided into by its kinetic characteristic: limit the multidirectional movable bearing support of the hold-down support of girder position, the one-way movable support of restriction girder laterally or longitudinally displacement, cooperation hold-down support rotating effect.Present stage, more one-way movable support is used to be one-way pot type rubber support in China, by the slip between wearing plate and rustless steel slide plate, it is achieved girder displacement, and by the lateral steel bar restriction girder direction of displacement of holder top.Simple in construction, pressure-bearing are effective, but do not possess shock resistance.
In view of the serious damage degree that bridge is caused by the earthquake disaster that China takes place frequently in recent years, requirement in " Seismic Design of Highway Bridges detailed rules and regulations (JTG/TB02-01-2008) " of newly revision in 2008, A class, B class and C class bridge must carry out the Aseismic Design under E1 geological process and E2 geological process, wherein installation seismic isolation device be have also been made respective specified.Therefore, each manufacturer and institute design numerous vibration absorption and isolation supports in recent years.Wherein utilizing spherical structure, the bearing carrying out friction swing shock absorption is more, additionally, also have part to carry out the bearing of coupling with the energy-dissipation structure such as antivibrator.
For unidirectional vibration absorption and isolation support, in normal operation, bridge moves because being affected occurred level by the factor such as mobile load, variations in temperature, and bearing needs to overcome this horizontal reacting force.The above-mentioned use spherical structure bearing by swing shock absorption, even if in normal operation, also can produce comparatively serious concentrated wear, cause that frequency of maintenance and maintenance cost are higher.
Utility model content
This utility model provides a kind of inclined-plane classification antidetonation one-way movable support, to solve the problems referred to above.In normal operation, the horizontal reacting force that bridge displacement produces, it is eliminated by the slip in middle steel plate gathering sill of the inclined-plane guide frame;Under E1 geological process, bottom inclined-plane guide frame, the inclined-plane of dovetail wedge matches with the inclined-plane of gathering sill, give the amplitude of fluctuation that upper base plate is certain, so that the beam body being attached thereto swings up and down, utilize gravitional force to consume seismic (seismal and be transferred to the horizontal vibration energy of bridge, reach damping purpose;Under E2 geological process, inclined-plane guide frame energy-absorbing, earthquake energy, after reaching design maximum, inclined-plane guide frame lost efficacy, and positive stop contacts with middle steel plate, to limit the sliding scale of bridge beam body, reaches the purpose of further damping.Therefore, in normal operation, the anti-seismic performance of not loss this utility model antidetonation parts;And under geological process, this utility model is capable of the function of classification antidetonation, reach the requirements for fortification against earthquake of " no damage in small earthquake, middle shake can repair, no collapsing with strong earthquake ".
In order to realize the purpose of this utility model, intend adopting techniques below:
A kind of inclined-plane classification antidetonation one-way movable support, it is characterized in that, including positive stop, inclined-plane guide frame, upper base plate, middle steel plate, pressure-bearing rubber slab and lower seat board, described positive stop is arranged at described upper base plate bottom surface surrounding, the vertical bridge of described upper base plate to or direction across bridge axis place be provided with groove and fixing site, described inclined-plane guide frame end face is provided with connecting hole, described fixing site is connected by connector with described connecting hole, described inclined-plane guide frame is fixed in described groove, bottom described inclined-plane guide frame the vertical bridge of described middle steel plate to or the gathering sill offered of direction across bridge axis place in slide, described middle steel plate and described pressure-bearing rubber slab are set in turn in the pelvic cavity of described lower seat board from top to bottom.
Further, the bottom of described inclined-plane guide frame is dovetail wedge-like.
Further, described gathering sill is inverted trapezoidal groove, and cell body sidewall is provided with reinforcement.
Further, there is space between the bottom of described inclined-plane guide frame and described gathering sill.
Further, the top diameter of described middle steel plate is less than base diameter.
Further, the base diameter of described middle steel plate and the diameter of described pressure-bearing rubber slab are less than the internal diameter of described pelvic cavity.
Further, described pressure-bearing rubber slab end face is provided with metal o-ring, and described metal o-ring external diameter is equal with the internal diameter of described pelvic cavity.
The beneficial effects of the utility model are:
1. in normal operation, the working method that bearing slides by leading eliminates the horizontal reacting force that bridge displacement produces, thus keeping the anti-seismic performance of inclined-plane guide frame, reduces frequency of maintenance and maintenance cost.
2. there is classification function of seismic resistance, under E1 geological process, the inclined-plane of inclined-plane guide frame and gathering sill cooperates, and what imparting upper base plate was certain swings up and down amplitude, so that beam body consumes seismic (seismal by gravitional force is transferred to the horizontal vibration energy of bridge, reach damping purpose;Under E2 geological process, by inclined-plane guide frame energy-absorbing, earthquake energy, after reaching design maximum, inclined-plane guide frame lost efficacy, and positive stop contacts with middle steel plate, to limit stable beam body sliding scale, reaches the purpose of further damping.
3. inclined-plane guide frame is independent of other components of bearing, it is possible to be individually replaced, thus it is consuming time to shorten maintenance, reduces maintenance cost.
Accompanying drawing explanation
Fig. 1 illustrates direction across bridge structural representation of the present utility model.
Fig. 2 illustrates that vertical bridge of the present utility model is to structural representation.
Fig. 3 illustrates the schematic diagram of this utility model inclined-plane guide frame.
Fig. 4 illustrates the structural representation of this utility model middle steel plate.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of inclined-plane classification antidetonation one-way movable support, including positive stop 1, inclined-plane guide frame 2, upper base plate 3, middle steel plate 4, pressure-bearing rubber slab 5 and lower seat board 6.
Described positive stop 1 is arranged at described upper base plate 3 bottom surface surrounding.Under violent geological process, described positive stop 1 contacts with described middle steel plate 4, to limit stable beam body sliding scale, reaches damping purpose.
Described upper base plate 3 indulge bridge to or direction across bridge axis place be provided with groove 31 and fixing site 32, described inclined-plane guide frame 2 end face is provided with connecting hole 21, described fixing site 32 is connected by connector with described connecting hole 21, is fixed in described groove 31 by described inclined-plane guide frame 2.Being easy to be individually replaced described inclined-plane guide frame 2, thus reducing maintenance man-hours, reducing maintenance cost.
Bottom described inclined-plane guide frame 2 described middle steel plate 4 indulge bridge to or the gathering sill 41 offered of direction across bridge axis place in slide.Being conducive in normal operation, described inclined-plane guide frame 2 eliminates, by sliding in described gathering sill 41, the horizontal reacting force that bridge displacement produces, thus keeping the function of seismic resistance of described inclined-plane guide frame 2.
The bottom of described inclined-plane guide frame 2 is dovetail wedge-like, matches with described inverted trapezoidal gathering sill 41.Structure after cooperation has structures with semi-rigid joints characteristic, has higher strength and stiffness and good ductile performance and energy-dissipating property, advantageously reduces earthquake.
Described gathering sill 41 cell body sidewall is provided with reinforcement 42.Be conducive to strengthening the described wear-resisting intensity of gathering sill 41.
Space is had between the bottom of described inclined-plane guide frame 2 and described gathering sill 41.It is easy to the bottom bevel at described inclined-plane guide frame 2 match with described gathering sill 41 side wall inclined plane, give described upper base plate 3 certain swing up and down amplitude, so that the beam body being connected with described upper base plate 3 can utilize gravitional force to consume seismic (seismal is transferred to the horizontal vibration energy of bridge, reach damping purpose;And the shearing force being subject to for the anchoring assembly fixing described upper base plate 3 and beam body can be alleviated, it is to avoid damage bottom beam body.
Described middle steel plate 4 and described pressure-bearing rubber slab 5 are set in turn in the pelvic cavity 61 of described lower seat board 6 from top to bottom, and the base diameter of described middle steel plate 4 and the diameter of described pressure-bearing rubber slab 5 are slightly less than the internal diameter of described pelvic cavity 61.Be conducive to the flexible rotating of bearing.
Described pressure-bearing rubber slab 5 end face is provided with metal o-ring 7, and described metal o-ring 7 external diameter is equal with the internal diameter of described pelvic cavity 61.Be conducive to being sealed in described pelvic cavity 61 by described pressure-bearing rubber slab 5, it is to avoid rubber extruding or aging, thus ensureing the load performance of bearing.
The top diameter of described middle steel plate 4 is less than base diameter.Be conducive to the swing of described upper base plate 3.
This utility model specific implementation method is as follows:
By the other types bearing of this utility model with the inclined-plane classification antidetonation series of standoffs of inventor's design, carry out coupling according to the characteristic of bridge.
Described upper base plate 3 is fixed on bottom bridge beam body by anchoring assembly, and described lower seat board 6 is fixed on Bridge Pier top by anchoring assembly.After installation, the axis of the components such as described inclined-plane guide frame 2, described upper base plate 3, described middle steel plate 4, described pressure-bearing rubber slab 5 and described lower seat board 5 essentially coincides, thus ensureing the initial duty that support is good.
In normal operation, the superstructure occurred level such as bridge beam body moves, and the bridge substructures such as pier are produced horizontal thrust.Slide in the gathering sill 41 of described middle steel plate 4 bottom described inclined-plane guide frame 2, make described upper base plate 3 follow beam body generation attitude drift, and described lower seat board 6 is held in place, thus eliminating the beam body displacement impact on substructure such as Bridge Pier.
Under E1 geological process, the dovetail wedge shape bottom bevel of described inclined-plane guide frame 2, match with the inclined-plane of described inverted trapezoidal gathering sill 41, give described upper base plate 3 certain swing up and down amplitude, so that beam body can utilize gravitional force to consume seismic (seismal is transferred to the horizontal vibration energy of bridge, reach damping purpose.
Under E2 geological process, described inclined-plane guide frame 2 energy-absorbing, earthquake energy, after reaching design maximum, described inclined-plane guide frame 2 lost efficacy, and described positive stop 1 contacts with described middle steel plate 4, to limit the sliding scale of bridge beam body, reach the purpose of further damping.
When safeguarding, unload the connector connecting described fixing site 32 and described connecting hole 21, the described inclined-plane guide frame 2 lost efficacy can be unloaded from described upper base plate, be replaced.

Claims (7)

  1. null1. an inclined-plane classification antidetonation one-way movable support,It is characterized in that,Including positive stop (1)、Inclined-plane guide frame (2)、Upper base plate (3)、Middle steel plate (4)、Pressure-bearing rubber slab (5) and lower seat board (6),Described positive stop (1) is arranged at described upper base plate (3) bottom surface surrounding,The vertical bridge of described upper base plate (3) to or direction across bridge axis place be provided with groove (31) and fixing site (32),Described inclined-plane guide frame (2) end face is provided with connecting hole (21),Described fixing site (32) is connected by connector with described connecting hole (21),Described inclined-plane guide frame (2) is fixed in described groove (31),Bottom, described inclined-plane guide frame (2) the vertical bridge of described middle steel plate (4) to or the gathering sill (41) offered of direction across bridge axis place in slip,Described middle steel plate (4) and described pressure-bearing rubber slab (5) are set in turn in the pelvic cavity (61) of described lower seat board (6) from top to bottom.
  2. 2. a kind of inclined-plane classification antidetonation one-way movable support according to claim 1, it is characterised in that the bottom on described inclined-plane guide frame (2) is dovetail wedge-like.
  3. 3. a kind of inclined-plane classification antidetonation one-way movable support according to claim 1, it is characterised in that described gathering sill (41) is inverted trapezoidal groove, and cell body sidewall is provided with reinforcement (42).
  4. 4. a kind of inclined-plane classification antidetonation one-way movable support according to claim 1, it is characterised in that have space between the bottom on described inclined-plane guide frame (2) and described gathering sill (41).
  5. 5. a kind of inclined-plane classification antidetonation one-way movable support according to claim 1, it is characterised in that the top diameter of described middle steel plate (4) is less than base diameter.
  6. 6. a kind of inclined-plane classification antidetonation one-way movable support according to claim 1, it is characterized in that, the base diameter of described middle steel plate (4) and the diameter of described pressure-bearing rubber slab (5) are less than the internal diameter of described pelvic cavity (61).
  7. 7. a kind of inclined-plane classification antidetonation one-way movable support according to claim 1, it is characterized in that, described pressure-bearing rubber slab (5) end face is provided with metal o-ring (7), and described metal o-ring (7) external diameter is equal with the internal diameter of described pelvic cavity (61).
CN201620137122.XU 2016-02-24 2016-02-24 One -way mobile support in grades combats earthquake on inclined plane Active CN205399192U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112144380A (en) * 2020-09-27 2020-12-29 同济大学 Prevent horizontal displacement's of bridge beam supports sliding block structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112144380A (en) * 2020-09-27 2020-12-29 同济大学 Prevent horizontal displacement's of bridge beam supports sliding block structure
CN112144380B (en) * 2020-09-27 2022-06-24 同济大学 Prevent horizontal displacement's of bridge beam supports sliding block structure

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