CN211547305U - Anchoring type rigidity difference combined rubber damping support - Google Patents
Anchoring type rigidity difference combined rubber damping support Download PDFInfo
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- CN211547305U CN211547305U CN201922287227.XU CN201922287227U CN211547305U CN 211547305 U CN211547305 U CN 211547305U CN 201922287227 U CN201922287227 U CN 201922287227U CN 211547305 U CN211547305 U CN 211547305U
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Abstract
The utility model discloses an anchor formula rigidity difference combination rubber shock mount comprises anchor bolt (2), shear block (3), upper and lower roof and shrouding, lamination district, slip district, and wherein the lamination district is formed by rubber layer and the steel sheet coincide of putting more energy into, and the slip district has a plurality of frictional layers, and the frictional layer comprises sliding steel sheet, tetrafluoro slide and the steel sheet of putting more energy into. The shock absorption and isolation device is characterized in that the vertical bearing capacity is not changed, the friction layer can slide and displace, the horizontal rigidity of the support is reduced, and meanwhile, the laminated layer region and the sliding region share the stiffening steel plate, so that the displacement capacity of the support is further improved, and the period is prolonged to achieve the purpose of shock absorption and isolation; the sliding surface has certain energy consumption capacity; after the earthquake, the support has certain self-restorability, and can be quickly repaired and replaced. The device can also adapt to larger displacement of the upper structure in a normal use state, and adjust horizontal force and bending moment applied to the abutments with different rigidities.
Description
Technical Field
The utility model belongs to bridge engineering, antidetonation field, thereby concretely relates to thereby can take place local slip and can reduce rigidity and increase the rubber support of power consumption ability in having whole type combination cross-section, earthquake.
Background
With the development of economy and technology in China, the requirement of people on the seismic capacity of bridges is improved. At present, plate-type rubber supports commonly used for small and medium-span bridges have overlarge shearing rigidity and overlow horizontal deformation capability and energy consumption capability, and sliding plate-type supports can have larger horizontal displacement, but fixed piers bear larger earthquake action, so that the two supports are not suitable for earthquake-resistant work directly and need to be improved.
The shock absorption and isolation support widely applied in the existing engineering is a lead core rubber support: on the basis of the laminated rubber support, one or more lead rods are added inside the laminated rubber support, and the lead rods are subjected to shearing plastic deformation, so that the rigidity is reduced, the structural period is prolonged, and meanwhile, the laminated rubber support has a good energy consumption effect.
However, the lead support has high temperature sensitivity, and needs to be carefully considered when used in a low-temperature environment; in addition, the lead support is easy to pollute the environment in the manufacturing, using and maintaining processes, and the waste lead treatment after the support is replaced is also a non-trivial environmental problem.
Therefore, a new improvement scheme needs to be provided for the plate-type rubber support, and the seismic isolation performance and the energy consumption capability of the support are improved on the premise of keeping the original advantages of the plate-type rubber support.
Disclosure of Invention
For solving the problem, the utility model discloses on current plate rubber support basis, place certain area's tetrafluoro slide and slip steel sheet formation slip district on a plurality of layers of stiffening steel sheet, rubber layer and stiffening steel sheet stromatolite bond on every side and form the lamination district, can take place relative slip between tetrafluoro slide and the slip steel sheet to form a rigidity difference combination rubber shock mount.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an anchoring type rigidity difference combined rubber shock absorption support is characterized by comprising an upper top plate (1), anchoring bolts (2), a shear block (3), an upper sealing plate (4), a lower top plate (11), a lower sealing plate (12), a laminated area (13) and a sliding area (14); the laminated layer (13) is formed by laminating a rubber layer (9) and a stiffening steel plate (8), and the rubber layer and the stiffening steel plate are vulcanized and bonded; a plurality of friction layers (5) are arranged in the sliding area (14), each friction layer consists of a sliding steel plate (6), a tetrafluoro sliding plate (7) and a stiffening steel plate (8), the tetrafluoro sliding plate (7) is reliably bonded with the sliding steel plate (6), and the tetrafluoro sliding plate (7) and the stiffening steel plate (8) can relatively slide;
the upper sealing plate (4) and the lower sealing plate (12) are respectively and reliably connected with an external structure through the upper top plate (1) and the lower top plate (11).
By way of example only, the upper top plate (1) and the lower top plate (11) are provided with bolt holes and are connected with embedded parts of external structures (such as beam bottoms and pier tops); it may also be achieved by welding. The beam bottom, pier top, etc. are merely examples, are not limiting, and are applicable to the utility model discloses the support scene at all.
Further innovation, an auxiliary mechanism is arranged between the upper top plate (1) and the upper sealing plate (4) and between the lower top plate (11) and the lower sealing plate (12) so as to ensure the integrity between the support body and the top plate.
The auxiliary mechanism is structurally realized: adopting an anchor bolt (2) and a shear block (3); the upper top plate 1 is positioned on the upper side of the upper sealing plate 4 and is in close contact with the upper sealing plate 4, the upper top plate 1 is provided with a bolt hole, and an anchor bolt 2 is adopted to form bolting with the upper sealing plate; the shearing resistant device is characterized in that grooves are formed in one side of the joint of the upper top plate 1 and the upper sealing plate 4, the shearing resistant blocks 3 are placed in the grooves, the shearing resistant blocks 3 are in close contact with the upper top plate 1 and the upper sealing plate 4, and the shearing resistant blocks have the functions of transferring the shearing force between the upper top plate 1 and the upper sealing plate 4.
The same structure and mechanism are as follows: the lower top plate 11 is located the lower side of the lower sealing plate 12, the lower top plate 11 is provided with bolt holes, the lower sealing plate is bolted through the anchor bolts 2, one side of the joint of the lower top plate 11 and the lower sealing plate 12 is provided with grooves, the shearing resistant blocks 3 are placed in the grooves, the shearing resistant blocks 3 are in close contact with the lower top plate 11 and the lower sealing plate 12, and the shearing force between the lower top plate 11 and the lower sealing plate 12 is transferred.
The anchor bolt and the shear block are mainly used for transferring the shearing force between the top plate and the sealing plate; the anchor bolt still additionally possesses the anchor connection effect in function, guarantees the wholeness between support body and the roof, and the deformability of make full use of support itself exerts the regional friction power consumption of sliding, owing to set up about the roof and with outside fixed, under the earthquake action, the support body can produce bigger deformation, the regional friction power consumption of full play sliding is favorable to improving the back restorability of shaking of support.
The support is further optimized, and the support further comprises a rubber protective layer (10). The rubber protective layer (10) surrounds the outer part of the support, namely the rubber protective layer (10) surrounds the periphery of the stiffening steel plate (8) and the plane of the upper sealing plate (4) and the lower sealing plate (12).
The utility model discloses in, upper and lower roof adopts the steel sheet, and shape and size can be adjusted according to the design needs.
The utility model discloses in, the steel sheet of putting more energy into is whole, for the lamination district and the district that slides share, guarantees the support displacement harmony.
The utility model discloses in, arbitrary ability and tetrafluoro slide board emergence relative slip's material can be selected to the sliding steel sheet.
In this novel use, the frictional layer both can select the contact surface of tetrafluoro slide and sliding steel plate as sliding friction surface, also can select the contact surface of tetrafluoro slide and stiffening steel plate as sliding friction surface.
The utility model discloses in, the tetrafluoro slide size in sliding region is unanimous with the sliding steel plate size, and the shape and the size in lamination district and sliding region can be adjusted according to the design needs.
The utility model discloses in, the tetrafluoro slide is the friction plate in technical scheme for and slip the steel sheet between form relative slip. It is not exhaustive, and the tetrafluoro skateboard can be replaced by various panels made of wear-resistant materials such as modified polytetrafluoroethylene boards, modified ultra-high molecular weight ethylene boards and the like.
In the utility model, the thinning and layering of the single-layer friction layer in the sliding area along the thickness direction comprises the thickness and the position of the sliding steel plate and the thickness and the position of the tetrafluoro sliding plate, and can be adjusted according to the design requirement;
the utility model discloses in, the number of piles of frictional layer can be adjusted according to the design needs in the sliding region.
The utility model discloses a theory of operation does:
the structure of the rigidity difference combined rubber damping support is similar to that of a plate type rubber support, so that the vertical bearing capacity of the support is ensured;
in the horizontal direction, a friction layer is arranged in a sliding area of the rigidity difference combined rubber shock absorption support, the friction layer can slide relatively, the horizontal deformation of the support can be provided by the shearing deformation of rubber and the sliding friction deformation of the friction layer in the sliding area, and the laminated area and the sliding area use the same stiffening steel plate, so that the two deformations have better coordination, and the integrity and the displacement adaptability of the support are improved. The shear rigidity of the support is reduced, the bridge period is prolonged under the action of an earthquake, the structural dynamic response is reduced, the seismic isolation effect is achieved, and the effect can be adjusted by adjusting the size of the sliding area and the number of friction layers;
under the action of an earthquake, a plurality of friction layers can slide simultaneously and are restrained by the rubber layers of the laminated layer so as not to cause overlarge and unstable interlayer displacement, and therefore, the energy-consuming capacity is certain under the action of reciprocating horizontal force;
after the earthquake, the rubber has elastic restoring force and is easy to restore to the initial state, and the bridge is ensured to have the function of serving as an earthquake relief and rush repair main road.
The internal force borne by the abutment can be adjusted by adjusting the size of the sliding area under the normal working state, and the large displacement of the upper structure caused by the temperature action and the like is adapted.
The utility model mainly provides the following advantages:
1. the utility model provides a tetrafluoro slide and slip steel sheet are placed through on a plurality of layers of stiffening steel sheet at plate rubber support to rigidity difference combination rubber damping support for the support has the slip ability, and is retrained by stromatolite district rubber layer and can not lead to the too big unstability of layer displacement. Because the sliding area and the laminated area share the stiffening steel plate, the sliding deformation and the rubber shearing deformation can be coordinated, the support displacement adaptability is further improved, and the support can adapt to larger displacement under the normal use state and the earthquake action.
2. The utility model provides a device has fully embodied the principle of subtracting the shock insulation, embodies the balanced relation of "power and displacement" promptly, through introducing the local sliding friction deformation of support, reduces support horizontal rigidity, fully prolongs structural cycle to reduce bridge seismic response, and can rely on the elastic restoring force of rubber to reset after the earthquake.
3. The device manufacturing process provided by the utility model is similar to the plate-type rubber support, and has the characteristics of simple production process, convenient use, lower manufacturing cost and the like.
4. The utility model provides a device is as the improvement to plate rubber support to do not cause the weakening of vertical bearing capacity, and the size can be adjusted according to the design needs, can be through the area size of adjustment sliding region, thereby the load distribution under adjustment bridge normal use, the earthquake action adapts to the displacement under the different situations.
5. The device provided by the utility model is totally made of environment-friendly and durable materials, avoids the pollution of the lead support to the environment, and is favorable for sustainable development.
To sum up, the utility model can improve the sliding friction deformation of the sliding surface while not weakening the vertical bearing capacity, improve the coordination between the sliding friction deformation and the rubber shearing deformation through sharing the stiffening steel plate, improve the support displacement capacity, reduce the horizontal rigidity of the support, adapt to larger upper structure displacement under the normal use state, prolong the structure period and reduce the earthquake action borne by the structure; furthermore, the device can generate friction sliding on a plurality of sliding surfaces, and has certain energy consumption capacity during earthquake; furthermore, the device has elastic restoring force and can be reset after an earthquake.
Can synthesize rigidity demand, the displacement demand that considers earthquake effect and normal use state to and carry out according to pier internal force distribution requirement the utility model discloses the dimensional adjustment of device.
Description of the drawings:
the attached drawings are the embodiments of the utility model, wherein:
FIG. 1 sectional view of a rigidity difference combined rubber damping support
FIG. 2 is a plan view of a rigidity difference combined rubber damping support
FIG. 3 is a vertical view of a combined rubber damping support with different rigidity
Reference numbers in the figures: the structure comprises an upper top plate 1, anchor bolts 2, a shear block 3, an upper sealing plate 4, a friction layer 5, a sliding steel plate 6, a tetrafluoro sliding plate 7, a stiffening steel plate 8, a rubber layer 9, a rubber protection layer 10, a lower top plate 11, a lower sealing plate 12, a laminated area 13 and a sliding area 14.
Detailed Description
In order to make the technical spirit and advantages of the present invention more clearly understandable to examiners of the patent office and especially to the public, the applicant shall describe below in detail, by way of example, with reference to the accompanying drawings, but the description of the example is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are merely formal and immaterial, shall be considered as the technical scope of the present invention.
Example 1: referring to fig. 1-3, the rigidity difference combined rubber shock absorption support is internally composed of an upper top plate 1, an upper sealing plate 4, a lower top plate 11, a lower sealing plate 12, a lamination area 13 and a sliding area 14; the upper top plate 1 (or the lower top plate 11) and the upper sealing plate 4 (or the lower sealing plate 12) are reliably connected with the shear block 3 through the anchor bolts 2; the laminated zone 13 is formed by laminating a rubber layer 9 and a stiffening steel plate 8, the sliding zone 14 is provided with a plurality of friction layers 5, and each friction layer consists of a sliding steel plate 6, a tetrafluoro sliding plate 7 and a stiffening steel plate 8; a rubber protector 10 surrounds the exterior of the stiffening steel plates 8 and the closure plates 4, 12.
The tetrafluoro slide plate 7 is bonded with the sliding steel plate 6 and can slide relative to the stiffening steel plate 8.
The laminated zone 13 and the sliding zone 14 share the same stiffening steel plate 8 in each layer. The laminated area and the sliding area form a combined section, the same stiffening steel plate is used together, and the laminated area and the sliding area can be integrally deformed and have harmony.
In the production process of the sliding steel plate 6, the contact surface of the sliding steel plate 6 and the tetrafluoro sliding plate 7 needs to be polished smoothly without coating a binder, and the contact surface of the sliding steel plate 6 and the stiffening steel plate needs to be roughened and coated with the binder for integral vulcanization bonding.
In the production process, the contact surfaces of the stiffening steel plates 8, the rubber layer 9 and the tetrafluoro sliding plate 7 need to be roughened and coated with a binder for integral vulcanization and bonding.
The utility model discloses the device is at last roof 1, roof 11 reservation hole down, reliably connects through bolt and the reservation piece of burying on bridge and mound, bench.
As another change of the embodiment of the utility model, the tetrafluoro slide plate of each friction layer can be changed into other materials which are beneficial to sliding friction.
As a further variation of the embodiment of the present invention, the friction layer in the sliding region may be one or more, and forms a combined cross section with the lamination region.
As another alternative of the embodiment of the present invention, the sliding steel plate may be replaced with other materials that can slide relative to the tetrafluoro slide plate.
As another alternative of the embodiment of the present invention, the position, thickness and size of the sliding steel plate and the tetrafluoro sliding plate can be changed.
As another alternative of the embodiment of the present invention, the frictional sliding surface can be replaced by the contact surface of the tetrafluoro sliding plate and the stiffening steel plate from the contact surface of the tetrafluoro sliding plate and the sliding steel plate, the sliding surface is required to be polished smoothly and cannot be coated with the adhesive, and the non-sliding surface is required to be roughened and coated with the adhesive.
The sliding steel plate can be made of any material capable of sliding relative to the tetrafluoro sliding plate, for example, a wear-resistant material similar to the tetrafluoro sliding plate.
As another alternative of the embodiment of the present invention, the bonding manner between the stiffening steel plate and the rubber layer and the tetrafluoro slider can be changed.
The utility model discloses when designing with the support example of simplest highway beam bridge, according to the vertical counter-force under the support normal use condition, confirm the support area earlier, utilize finite element software, under the prerequisite that satisfies support allowable displacement and can play sufficient shock attenuation and isolation effect under guaranteeing the earthquake action in the normal use condition, confirm the horizontal rigidity of support, support thickness, and then confirm the size of sliding region; simultaneously, the size of the sliding area can be adjusted to adjust the pier internal force with different rigidity, so that the pier internal force is as uniform as possible under the conditions of normal use or earthquake action.
The utility model discloses rigidity difference combination rubber shock mount has three effect when the earthquake takes place promptly:
horizontal rigidity is reduced, the period is increased, the excellent period of a field can be staggered, and seismic isolation and reduction effects are achieved;
the sliding area can consume seismic energy to a certain extent through friction sliding, and cannot cause instability under the constraint of the laminated area.
After the earthquake, the support can be restored to be close to the original shape by the elastic restoring force of the rubber.
In addition, can be according to the displacement demand, the pier internal force distribution demand of normally used rigidity demand, superstructure under the effect such as temperature, adjust the size in inside sliding region, and construction process is simple, and the maintenance of being convenient for change like plate rubber support is pollution-free to the environment, has sustainability and developability. The support can be integrally processed, is simple and convenient to manufacture, can reduce the engineering cost input and the design and construction difficulty, and is particularly suitable for medium and small-span continuous highway bridges.
The size, the quantity, the selected materials and the shape of the friction layer of the sliding area can be adjusted according to specific conditions, and any equivalent transformation which is only formal but not substantial according to the concept of the invention is regarded as the technical scheme scope of the invention.
On the premise of ensuring the vertical bearing capacity of the support, the friction layer in the sliding area is allowed to slide relatively, and the displacement of the support is provided by the shearing deformation of the rubber and the sliding deformation of the friction layer, so that the horizontal rigidity of the support is reduced, and the support can adapt to larger deformation of an upper structure under the action of temperature in a normal use state; under the action of earthquake, the structure period can be prolonged, and sliding friction is generated in a constrained state, so that the energy consumption capability is certain, the dynamic response of the structure is reduced, and the seismic isolation and reduction effect is achieved; the support has self-recovery after earthquake. Further, the horizontal stiffness of the support can be adjusted by adjusting the size and number of sliding zones, making the forces in the substructure as uniform as possible.
Claims (4)
1. An anchoring type rigidity difference combined rubber shock absorption support is characterized by comprising an upper top plate (1), anchoring bolts (2), a shear block (3), an upper sealing plate (4), a lower top plate (11), a lower sealing plate (12), a laminated area (13) and a sliding area (14);
the laminated layer (13) is formed by laminating a rubber layer (9) and a stiffening steel plate (8), and the rubber layer and the stiffening steel plate are vulcanized and bonded;
a plurality of friction layers (5) are arranged in the sliding area (14), each friction layer consists of a sliding steel plate (6), a tetrafluoro sliding plate (7) and a stiffening steel plate (8), the tetrafluoro sliding plate (7) is reliably bonded with the sliding steel plate (6), and the tetrafluoro sliding plate (7) and the stiffening steel plate (8) can relatively slide;
the upper sealing plate (4) and the lower sealing plate (12) are respectively and reliably connected with an external structure through the upper top plate (1) and the lower top plate (11).
2. The anchored rigidity-difference combined rubber shock-absorbing support according to claim 1, wherein auxiliary mechanisms are provided between the upper top plate (1) and the upper sealing plate (4), and between the lower top plate (11) and the lower sealing plate (12) to ensure the integrity between the support body and the top plate.
3. The anchored differential stiffness combination rubber shock mount of claim 2, wherein said secondary mechanism is configured to: adopting an anchor bolt (2) and a shear block (3); the upper top plate (1) is positioned on the upper side of the upper sealing plate (4) and is in close contact with the upper sealing plate, the upper top plate (1) is provided with a bolt hole, and an anchor bolt (2) is adopted to form bolting with the upper sealing plate;
grooves are formed in one side of the joint of the upper top plate (1) and the upper sealing plate (4), the anti-shearing blocks (3) are placed in the grooves, the anti-shearing blocks (3) are tightly contacted with the upper top plate (1) and the upper sealing plate (4), and the anti-shearing blocks have the function of transferring shearing force between the upper top plate (1) and the upper sealing plate (4);
the same structure and mechanism are as follows:
lower roof (11) are located shrouding (12) downside down, and both in close contact with, and the bolt hole is seted up to lower roof (11), adopts anchor bolt (2) and lower shrouding to form the bolt joint, and lower roof (11) all set up the groove with one side of shrouding (12) department of meeting down, places anti-shear block (3) in the groove, and anti-shear block (3) and lower roof (11), lower shrouding (12) in close contact with, the shear force between roof (11) and lower shrouding (12) under its function is for the transmission.
4. An anchored differential stiffness combination rubber cushion mount according to any one of claims 1 to 3, wherein the mount further comprises a rubber protector layer (10);
the rubber protective layer (10) surrounds the outer part of the support, namely the rubber protective layer (10) surrounds the periphery of the stiffening steel plate (8) and the plane of the upper sealing plate (4) and the lower sealing plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922287227.XU CN211547305U (en) | 2019-12-17 | 2019-12-17 | Anchoring type rigidity difference combined rubber damping support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922287227.XU CN211547305U (en) | 2019-12-17 | 2019-12-17 | Anchoring type rigidity difference combined rubber damping support |
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| CN211547305U true CN211547305U (en) | 2020-09-22 |
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| CN201922287227.XU Active CN211547305U (en) | 2019-12-17 | 2019-12-17 | Anchoring type rigidity difference combined rubber damping support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119034A (en) * | 2019-12-17 | 2020-05-08 | 同济大学 | Inhaul cable limiting rigidity difference combined rubber damping support |
| CN115233851A (en) * | 2022-08-24 | 2022-10-25 | 福建省中霖工程建设有限公司 | Buckling-restrained brace damping structure and mounting method thereof |
-
2019
- 2019-12-17 CN CN201922287227.XU patent/CN211547305U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119034A (en) * | 2019-12-17 | 2020-05-08 | 同济大学 | Inhaul cable limiting rigidity difference combined rubber damping support |
| CN111119034B (en) * | 2019-12-17 | 2024-05-14 | 同济大学 | Combined rubber shock-absorbing support with limiting rigidity difference of inhaul cable |
| CN115233851A (en) * | 2022-08-24 | 2022-10-25 | 福建省中霖工程建设有限公司 | Buckling-restrained brace damping structure and mounting method thereof |
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