CN207267959U - A kind of function divergence type combined isolation bearing - Google Patents
A kind of function divergence type combined isolation bearing Download PDFInfo
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- CN207267959U CN207267959U CN201720810322.1U CN201720810322U CN207267959U CN 207267959 U CN207267959 U CN 207267959U CN 201720810322 U CN201720810322 U CN 201720810322U CN 207267959 U CN207267959 U CN 207267959U
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Abstract
A kind of function divergence type combined isolation bearing, the shock isolating pedestal are made of bearing upper steel plate, closed rubber rotating part, General Purpose Rubber abutment portion, bearing lower steel plate and side steel block；Closed rubber rotating part independently undertakes the rotational deformation function of shock isolating pedestal, and consumes a part of seismic energy by rotational deformation；General Purpose Rubber abutment portion independently undertakes the horizontal shear deformation function of shock isolating pedestal, and a part of seismic energy is consumed by detrusion.The function divergence type combined isolation bearing separates the rotational deformation function of bearing with horizontal shear deformation function, the bearing is met the natural period in shock design and buckling stability requirement at the same time；In addition, each shock isolating pedestal is mounted with side steel block in direction across bridge both sides, compared with ordinary reinforced concrete block, position of collision disperses, and impact force is smaller, can not only reduce the damage of shock isolating pedestal itself, moreover it is possible to restrainer earthquake.
Description
Technical field
The utility model belongs to science of bridge building technical field of buildings, is related to a kind of bridge combined isolation stand apparatus.
Background technology
China is one of earthquake-prone countries in the world, and except minority saves especially, earthquake occurred for other each province.Earthquake
Destruction causes huge damage to Bridges in Our Country.In earthquake, shock isolating pedestal can effectively reduce bridge earthquake, wherein commonly
Rubber support is widely used in isolation bridge.
In general, General Purpose Rubber bearing needs to meet following items function：1st, vertical support function；2nd, horizontal shear becomes
Shape function；3rd, rotational deformation function.In order to reach function above, the shape of bearing and the setting of laminated construction receive necessarily
Limitation.On the one hand in order to extend the vibration period of top beam body, meet the shock design requirement of bridge, it is necessary to greatly increase rubber
The thickness of glue bearing.But on the other hand, but when bearing vertical load, unstable failure easily occurs for thicker rubber support.
Both is difficult to meet at the same time.
In addition, in earthquake, beam body can produce larger direction across bridge or along bridge to displacement, and cross-bridges may occur when serious
To or along bridge to fall beam earthquake.Direction across bridge falls beam destruction, the more cross-bridges at the top of pier cap beam of Bridges in Our Country in order to prevent
Reinforced concrete block is set to both sides, utilizes the opposite of the collision limitation beam body direction across bridge between reinforced concrete block and beam body
Larger displacement, but common reinforced concrete block sets negligible amounts, position of collision is concentrated, usually because collision in earthquake
Power and horizontal shear are excessive and destroy, so as to cause direction across bridge to fall beam earthquake；Equally, the larger impact force in earthquake may
Destroy a bridge along bridge to limiting device, cause along bridge to falling beam earthquake.
Therefore, a kind of new shock isolating pedestal how is developed, can meet natural period and buckling stability in shock design
It is required that and it is art technology to the new shock isolating pedestal with the relatively large horizontal displacement of direction across bridge that can limit top beam body along bridge
The problem of personnel are currently in the urgent need to address.
Utility model content
In view of drawbacks described above, the utility model devises a kind of function divergence type combined isolation bearing, the new shock insulation branch
The rotational deformation function of General Purpose Rubber bearing is deformed function with horizontal shear and separated by seat, make it have the larger natural period and
Buckling instability damage is not susceptible to, top beam body can be limited along bridge to the side steel gear with direction across bridge larger displacement at the same time by containing
Block, prevents support damage and falls beam earthquake.
The utility model is achieved through the following technical solutions.
A kind of function divergence type combined isolation bearing described in the utility model, it is characterised in that：Mainly include on bearing
Steel plate, closed rubber rotating part, General Purpose Rubber abutment portion, bearing lower steel plate and side steel stop block structure；On the bearing
The direction across bridge both sides centre position of steel plate is provided with groove, to coordinate side steel block limitation top beam body along bridge to and direction across bridge
Greater level displacement.Bearing upper steel plate is fixed on beam body bottom upwardly through bolt, pre-buried there is provided one piece in beam body bottom
Steel plate, pre-embedded steel slab plane is parallel with bearing upper steel plate plane, ensures that contact is uniform, reasonable stress, and support position is horizontal.
The closed rubber rotating part is arranged on below bearing upper steel plate, and its upper part is one piece of round rubber plate, middle
It is one piece of circular junction steel plate, lower part is one piece of square junction steel plate；The lower part of bearing upper steel plate, which is equipped with one, can be embedded in circle
Rubber slab groove；Bearing upper steel plate is bolted to connection with square junction steel plate.
The top of the General Purpose Rubber abutment portion passes through the circular junction steel plate in bolt and closed rubber rotating part
Connection, lower part are bolted with one piece of middle junction steel plate.
The top of the bearing lower steel plate is connected with middle junction steel plate, and lower part is fixed together with pier coping portion.
The bearing lower steel plate direction across bridge both sides are respectively arranged side steel block, for limit the suitable bridge of top beam body to
The relatively large displacement of direction across bridge.
When bridge rotates, because containing steel plate in General Purpose Rubber abutment portion, rotational deformation is not likely to produce, and it is close
The round rubber plate closed in rubber rotating part is easier to produce rotational deformation relatively, so the only closed rubber rotation section on top
The raw rotational deformation of distribution, to adapt to beam-ends rotation.In addition, round rubber plate in earthquake in closed rubber rotating part can be according to
By the rotational deformation of itself, a part of seismic energy is consumed, reduces damage of the earthquake to bridge structure.
In earthquake, because in the groove of circular junction steel plate top insertion bearing upper steel plate, round rubber plate is limited
Horizontal shear deforms, so only General Purpose Rubber abutment portion provides horizontal shear deformation function, extends the vibration week of top beam body
Phase, makes top beam body planar slowly vibrate, earthquake energy, plays isolating affection.
Preferably, above-mentioned function divergence type combined isolation bearing, it is recessed that circular junction steel plate lower part centre is equipped with one
Groove, an embedded cylindrical steel core in groove.Also there is identical groove in the lower part of General Purpose Rubber abutment portion, can be embedded in identical
Cylindrical steel core.On the one hand, steel core can limit the horizontal sliding of upper and lower part structure to a certain extent, have fixed bit
The effect put；On the other hand, when larger displacement occurs for top beam body, cylindrical steel core has larger shear resistance, avoids general
Failure by shear occurs between junction steel plate among logical rubber support part and upper circular junction steel plate or lower part, cuts level
Shear deformation is occurred over just on General Purpose Rubber abutment portion.
Preferably, above-mentioned function divergence type combined isolation bearing, the side steel block top steel plate and steel on bearing
The suitable bridge of plate is to being respectively 40-100mm, 30-60mm with the more excellent distance of direction across bridge.Side steel block can not only limit upper beam
Body direction across bridge displacement, moreover it is possible to limit top beam body along bridge to displacement.The lower part of side steel block top steel shoe is wedge structure,
Increase the ability of Collision-free load.In addition, on the premise of matching requirements are met, ribbed stiffener is provided with direction across bridge, greatly
The big intensity for improving side steel block.In earthquake, along bridge to direction across bridge larger displacement can occur for beam body, and then cause
Relatively large displacement between bearing upper and lower part, not only damages bearing in itself significantly, or even also results in beam earthquake.Because
Side steel block is provided with each function divergence type combined isolation bearing, should can be occurred in ordinary reinforced concrete
What the concentration collision between block and top beam body was transferred on the side steel block that quantity is more and position of collision disperses scattered touches
Hit, impact force is smaller, can not only effectively reduce the damage of shock isolating pedestal itself in earthquake, moreover it is possible to effectively limitation beam body along bridge to
With the relatively large displacement of direction across bridge, restrainer earthquake.
The construction method of function divergence type combined isolation bearing described in the utility model, as follows：(1) first will circle
Shape junction steel plate lower part is embedded in the round hole of square junction steel plate, is then connected by bolt with General Purpose Rubber abutment portion
Connect；(2) again by the groove of round rubber block insertion bearing upper steel plate, using bolt by bearing upper steel plate and square junction steel plate
Connection, makes bearing upper steel plate, round rubber plate, circular junction steel plate, square junction steel plate, becomes a closed rubber rotation section
Point；(3) General Purpose Rubber abutment portion is installed by bolt on middle junction steel plate again；(4) by middle junction steel plate mounted in branch
On seat lower steel plate；(5) bearing lower steel plate is mounted in pier coping portion, both sides install side steel block；(6) by bearing upper steel plate to
On be bolted on beam body bottom, be provided with one piece of pre-embedded steel slab in beam body bottom, pre-embedded steel slab plane and steel on bearing
Plate plane is parallel, ensures that contact is uniform, reasonable stress, and support position is horizontal.
Compared with prior art, the utility model has the following advantages：
1. the closed rubber rotating part of function divergence type combined isolation bearing independently undertakes rotational deformation function, common rubber
Glue abutment portion undertakes horizontal shear deformation function, and rotational deformation function and the horizontal shear of General Purpose Rubber bearing are deformed function
Separate, the natural period of shock isolating pedestal, effective shock insulation, moreover it is possible to ensure the buckling stability of bearing can not only be extended.
2. function divergence type combined isolation bearing lower steel plate direction across bridge both sides, can have equipped with the side steel block containing ribbed stiffener
Effect limitation beam body along bridge to the relatively large horizontal displacement of direction across bridge, bearing can not only be reduced and damaged because relatively large displacement occurs
It is bad, moreover it is possible to effective restrainer earthquake.
3. being provided with side steel block on each function divergence type combined isolation bearing, should can occur in beam
Concentration collision between body and reinforced concrete block, the scattered collision being transferred on each shock isolating pedestal, impact force is smaller, every
It is small to shake bearing damage.
Brief description of the drawings
Fig. 1 is the utility model entirety three dimensional structure diagram.
Fig. 2 is the overall positive semi-cutaway of the utility model.
Fig. 3 is the utility model entirety side semi-cutaway.
Fig. 4 is the utility model bearing upper steel plate structure diagram.
Fig. 5 is the A-A views of Fig. 4.
Fig. 6 is the utility model top view.
Fig. 7 is the square junction steel plate structure diagram of the utility model.
Fig. 8 is the B-B views of Fig. 7.
Fig. 9 is the utility model circle junction steel plate structure diagram.
Figure 10 is the C-C views of Fig. 9.
Figure 11 is the closed rubber rotating part working state figure of the utility model.
Figure 12 is the utility model General Purpose Rubber abutment portion working state figure.
Figure 13 is for the utility model side steel block along bridge to working state figure.
Figure 14 is the utility model side steel block direction across bridge working state figure.
In figure：1 is bearing upper steel plate, and 2 be the king-bolt hole of bearing upper steel plate, and 3 be the stove bolt hole of bearing upper steel plate,
4 be the king-bolt of bearing upper steel plate, and 5 be round rubber plate, and 6 be square junction steel plate, 7 for square junction steel plate bolt hole, 8
It is circular junction steel plate for the stove bolt of bearing upper steel plate, 9,10 be the bolt hole of circular junction steel plate, and 11 be General Purpose Rubber branch
Seating portion, 12 be the steel plate of General Purpose Rubber abutment portion, and 13 be the rubber layer of General Purpose Rubber abutment portion, and 14 be General Purpose Rubber branch
The upper bolt hole of seating portion, 15 be the lower bolt hole of General Purpose Rubber abutment portion, 16 for circular junction steel plate bolt, 17
It is middle junction steel plate for short steel core, 18,19 be the stove bolt hole of middle junction steel plate, and 20 be the king-bolt of middle junction steel plate
Hole, 21 be the stove bolt of middle junction steel plate, and 22 be long steel core, and 23 be bearing lower steel plate, and 24 be the stove bolt of bearing lower steel plate
Hole, 25 be the bolt hole of bearing lower steel plate both lateral sides, and 26 be the king-bolt hole of bearing lower steel plate, and 27 be middle junction steel plate
King-bolt, 28 be nut, and 29 reserve rod iron for bridge pier, and 30 be side steel block, and 31 be the steel shoe of side steel block, and 32 be side
The transverse stiffener of face steel block, 33 be the bolt hole of side steel block, and 34 be the bolt of side steel block.
Embodiment
The utility model is described in detail below in conjunction with attached drawing.
Fig. 1 is the overall graphics of the utility model.As shown, the utility model is a kind of function divergence type combined isolation
Bearing.As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5,4 king-bolt holes 2 and 8 stove bolt holes are arranged at 1 top of bearing upper steel plate
3, beam body bottom can be fixedly connected on by king-bolt 4 with beam body top pre-embedded steel slab.In addition, in 1 lower part of bearing upper steel plate
There is a groove, as shown in Figure 1, Figure 2, Figure 3 shows, round rubber plate 5 can be embedded just below in groove.As shown in Figures 1 to 6, propping up
Seat upper steel plate both lateral sides have a groove, and side steel block 30 and bearing upper steel plate 1 are along bridge to (L1) and direction across bridge
(L2) more excellent clear distance is respectively 40-100mm (L1), 30-60mm (L2).
As shown in Figure 7, Figure 8, on square junction steel plate 6,8 bolts hole 7 are provided with, by bolt 8 by bearing upper steel plate 1 with
Square junction steel plate 6 connects, and forms closed rubber rotating part.
Concrete construction method：As shown in Figure 7, Figure 8, it is the circular hole of up/down perforation among square junction steel plate 6.Such as Fig. 9, figure
Shown in 10, a groove is arranged at circular 9 lower part of junction steel plate and lower radius is less than top, is provided with 8 bolts hole 10.Circle connection
9 lower part of steel plate can be embedded in the round hole of square junction steel plate 6, be then connected by bolt 8 with bearing upper steel plate 1, made
Bearing upper steel plate 1, round rubber plate 5, circular junction steel plate 9, square junction steel plate 6, become a closed rubber rotating part,
This part-structure independently undertakes the rotating function of shock isolating pedestal.
As shown in figure 11, when the beam body on shock isolating pedestal top rotates, due to bearing upper steel plate 1 and beam body bottom
Reserved Interal fixation connection, so can rotate and rotate with beam body, the round rubber plate 5 in closed rubber rotating part has good
Good elasticity, can produce certain rotational deformation, independently undertake rotational deformation function.Compared with General Purpose Rubber bearing, this practicality
It is new the rotational deformation function of General Purpose Rubber bearing to be separated with horizontal shear deformation function.
As shown in Figure 1, Figure 2, Figure 3 shows, General Purpose Rubber abutment portion 11, is formed by stacking by steel plate 12 and rubber layer 13, top
8 bolts hole 14 are provided with, lower part is provided with 8 bolts hole 15.Circular junction steel plate 9 passes through bolt 16 and General Purpose Rubber abutment portion
11 are connected；As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 9, circular 9 lower recess of junction steel plate is embedded in short steel core 17.
As shown in Figure 1, on middle junction steel plate 18,8 stove bolt holes 19 and 12 king-bolt holes 20 are provided with.Common rubber
The lower part of glue abutment portion 11 is connected with middle junction steel plate 18 by bolt 21, between the two the embedded long steel core 22 in middle part.It is short
Steel core 17 and long steel core 22, on the one hand can fix the position of General Purpose Rubber abutment portion 11, on the other hand cylindrical steel core tool
There is larger shear resistance, when larger displacement occurs for top beam body, horizontal shear deformation can only occur in General Purpose Rubber bearing
On part.
As shown in figure 12, during earthquake, with beam body relatively large horizontal displacement occurs for bridge pier, General Purpose Rubber abutment portion 11
Horizontal direction has the function of detrusion, can not only consume a part of seismic energy, moreover it is possible to extends the intrinsic week of top beam body
Phase, plays isolating affection, substantially reduces the earthquake of bridge.
As shown in Figure 1, on bearing lower steel plate 23, surrounding is provided with 12 bolts hole 24, and direction across bridge both sides are respectively provided with 4 bolts
Hole 25, corner are provided with 4 king-bolt holes 26.Middle junction steel plate 18 is connected with bearing lower steel plate 23 by bolt 27, then
It is connected using nut 28 with the reserved rod iron 29 on bridge pier, whole function divergence type combined isolation bearing is fixed on bridge pier.
As shown in Figure 1, the top of side steel block 30 is one block of steel shoe 31.The lower part of steel shoe 31 is wedge structure,
The ability to Collision-free along bridge can be strengthened；The direction across bridge side of side steel block 30 is equipped with ribbed stiffener 32, can strengthen horizontal stroke
Ability of the bridge to Collision-free.4 bolts hole 33 are provided with side steel block 30, using bolt 34, side steel block 30 is consolidated
It is scheduled on 23 direction across bridge both sides of bearing lower steel plate.
As shown in Figure 13, Figure 14, in earthquake, beam body along bridge to or direction across bridge larger displacement, bearing upper steel plate 1 occurs
It can move with beam body, collide with being fixed on the steel shoe 31 on 30 top of side steel block of 23 both sides of bearing lower steel plate.
Because being provided with side steel block 30 on each function divergence type combined isolation bearing, position of collision can be disperseed, reduced
The impact force on every one side steel block is acted on, reduces the damaged in collision of side steel block, so as to effectively limit the horizontal stroke of beam body
Bridge to along bridge to displacement, reduce the infringement to shock isolating pedestal, pre- girder falling earthquake.
Claims (3)
- A kind of 1. function divergence type combined isolation bearing, it is characterised in that：Mainly include bearing upper steel plate, closed rubber rotation section Point, General Purpose Rubber abutment portion, bearing lower steel plate and side steel stop block structure；The bearing upper steel plate is fixed upwardly through bolt In beam body bottom；The closed rubber rotating part is arranged on below bearing upper steel plate, and its upper part is one piece of round rubber plate, and centre is one Block circle junction steel plate, lower part are one piece of square junction steel plates；The lower part of bearing upper steel plate, which is equipped with one, can be embedded in round rubber Plate groove；Bearing upper steel plate is bolted to connection with square junction steel plate；The top of the General Purpose Rubber abutment portion is connected by bolt with the circular junction steel plate in closed rubber rotating part, Lower part is bolted with one piece of middle junction steel plate；The top of the bearing lower steel plate is connected with middle junction steel plate, and lower part is fixed together with pier coping portion；The bearing lower steel plate direction across bridge both sides are respectively arranged side steel block, for limiting the direction across bridge and Shun Qiao of top beam body To displacement.
- 2. function divergence type combined isolation bearing according to claim 1, it is characterised in that：The circular junction steel plate A groove is equipped among lower part, a cylindrical steel core is embedded in groove.
- 3. function divergence type combined isolation bearing according to claim 1, it is characterised in that：The side steel block Steel shoe lower part is wedge structure, containing horizontal ribbed stiffener, is respectively to the distance with direction across bridge along bridge with bearing upper steel plate 40-100mm、30-60mm。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720810322.1U CN207267959U (en) | 2017-07-05 | 2017-07-05 | A kind of function divergence type combined isolation bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720810322.1U CN207267959U (en) | 2017-07-05 | 2017-07-05 | A kind of function divergence type combined isolation bearing |
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| CN207267959U true CN207267959U (en) | 2018-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190639A (en) * | 2017-07-05 | 2017-09-22 | 南昌大学 | The function divergence type combined isolation bearing and its construction method of a kind of steely stop block structure |
-
2017
- 2017-07-05 CN CN201720810322.1U patent/CN207267959U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190639A (en) * | 2017-07-05 | 2017-09-22 | 南昌大学 | The function divergence type combined isolation bearing and its construction method of a kind of steely stop block structure |
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