CN220685766U - High damping shock insulation support for bridge - Google Patents
High damping shock insulation support for bridge Download PDFInfo
- Publication number
- CN220685766U CN220685766U CN202321892745.4U CN202321892745U CN220685766U CN 220685766 U CN220685766 U CN 220685766U CN 202321892745 U CN202321892745 U CN 202321892745U CN 220685766 U CN220685766 U CN 220685766U
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- rubber layer
- resistance rubber
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- supporting
- support
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- 238000013016 damping Methods 0.000 title claims abstract description 59
- 230000035939 shock Effects 0.000 title description 20
- 238000009413 insulation Methods 0.000 title description 8
- 229920001971 elastomer Polymers 0.000 claims abstract description 113
- 239000005060 rubber Substances 0.000 claims abstract description 113
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The utility model relates to the technical field of bridge vibration isolation, and discloses a high-damping vibration isolation support for a bridge. The device comprises a rectangular supporting base, wherein two internal damping mechanisms and two external damping mechanisms are arranged on the rectangular supporting base; the inner damping mechanism comprises a circular supporting groove formed in a rectangular supporting base, a circular supporting steel plate is arranged on the inner wall of the bottom of the circular supporting groove, a high-resistance rubber layer outer ring, a high-resistance rubber layer inner ring and a high-resistance rubber layer center block are arranged at the top of the circular supporting steel plate, and the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block are formed by vulcanizing and bonding a high-damping rubber layer with a damping ratio of 15%. The high-damping vibration isolation support for the bridge can effectively prolong the service life of the device after being subjected to pressure, and can effectively increase the durability of the device due to the linear increase of the thickness of the device.
Description
Technical Field
The utility model relates to the technical field of bridge vibration isolation, in particular to a high-damping vibration isolation support for a bridge.
Background
In recent years, the seismic isolation technology is paid more attention and developed. The traditional anti-seismic measures of the bridge mostly adopt a method of enlarging the cross section and reinforcing bars to strengthen the strength of structural members, and the method of 'just-gram-just' can enlarge the earthquake force response of the bridge and is uneconomical. The vibration isolation is to set a horizontal flexible support and an energy dissipation device at the joint of the beam body, the pier and the platform, so as to prolong the period of the bridge structure and increase the damping of the structure to reduce the earthquake response of the bridge. The effectiveness of the vibration isolation system is explained and proved in experimental research and theoretical analysis, and the vibration isolation capability of the bridge can be effectively improved through a vibration isolation technology through verification of several major earthquakes which occur in recent years in China, such as a Wenchuan earthquake in 2008 and a reed-hill earthquake in 2013. The shock isolation system which is most widely applied and mature in the domestic bridge engineering at present is a rubber shock isolation system. In the rubber shock isolation system, the common rubber shock isolation support has limited shock isolation capability, and is usually connected with a damper for use to achieve good shock isolation effect; although the lead-core shock-insulation rubber support has good shock insulation performance, the lead core can be subjected to fatigue shear failure under the action of low-cycle fatigue load, so that the loss of damping and energy consumption capacity is caused, the service performance of the support is reduced, in addition, lead can cause serious pollution to the environment, and the lead-core shock-insulation rubber support has limitation and inconvenience in some engineering application; the high damping rubber support has almost the same energy consumption capability as the lead rubber support and even better energy consumption capability, has no problem of environmental pollution, is paid attention in recent years, and is used more and more widely.
Most of the existing shock insulation support structures adopt solid laminated rubber structures, the effect of transverse shock absorption is achieved through a mode of sequentially superposing rubber and steel plates, then the flexibility of upper and lower rubber is utilized to achieve the effect of vertical shock absorption, however, due to the mode of staggered superposition of one layer of rubber and one layer of steel plate when the shock insulation support is adopted, the vertical shock absorption effect of the existing shock insulation support is not very good. Meanwhile, in the practical application process, vibration is not unidirectional, often composite multidirectional vibration, and when the vibration isolation support vibrates transversely, the rubber and steel plate are overlapped, so that the rubber is wide in transverse direction, high in transverse rigidity and poor in transverse shock absorbing capacity. In addition, the existing superposition combined structure between the pure solid rubber and the steel plate has limited ductility and variability of the solid rubber during vertical shock absorption, and the solid rubber can absorb shock together through a plurality of rubbers, but has poor shock absorption effect on large shock.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a high-damping vibration-isolating support for a bridge. The device comprises a rectangular supporting base, wherein two internal damping mechanisms and two external damping mechanisms are arranged on the rectangular supporting base;
the inner damping mechanism comprises a circular supporting groove formed in a rectangular supporting base, a circular supporting steel plate is arranged on the inner wall of the bottom of the circular supporting groove, a high-resistance rubber layer outer ring, a high-resistance rubber layer inner ring and a high-resistance rubber layer center block are arranged at the top of the circular supporting steel plate, and the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block are formed by vulcanizing and bonding a high-damping rubber layer with a damping ratio of 15%.
Further, a deformation gap with the width of 5 mm exists between the outer ring of the high-resistance rubber layer and the inner ring of the high-resistance rubber layer, a deformation gap with the width of 5 mm exists between the inner ring of the high-resistance rubber layer and the center block of the high-resistance rubber layer, and the combination of the outer ring of the high-resistance rubber layer, the inner ring of the high-resistance rubber layer and the center block of the high-resistance rubber layer of the circular support steel plate is unchanged to be increased downwards in sequence.
Further, the downward thickness of the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block increases linearly, and each layer increases by 8% in thickness.
Further, the external damping mechanism comprises a plurality of multi-section supporting hydraulic columns arranged at the top of the rectangular supporting base, a top substrate is fixedly arranged at the top of the multi-section supporting hydraulic columns, a plurality of supporting damping springs are fixedly arranged at the top of the rectangular supporting base, and the top ends of the supporting damping springs are fixedly connected with the bottom of the top substrate.
Further, a plurality of limiting round posts are fixedly arranged at the bottom of the top substrate, a plurality of supporting limiting round grooves are formed in the top of the rectangular supporting base, and a plurality of limiting round posts extend into the supporting limiting round grooves respectively and are matched with the supporting limiting round grooves respectively.
Further, the top base plate is composed of a steel plate with toughness, and an anti-slip rubber pad is arranged on the surface of the top base plate.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, by arranging the internal damping mechanism, vibration can be reduced through the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block, deformation gaps among the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block can provide deformation space when the device is stressed, so that the damage to the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block caused by long-term extrusion is avoided, the service life of the device is effectively prolonged, and the durability of the device can be effectively increased through the linear increase of the thicknesses of the high-resistance rubber layer outer ring, the high-resistance rubber layer inner ring and the high-resistance rubber layer center block; the external damping mechanism is arranged, so that stress can be reduced through the multi-section supporting hydraulic column and the supporting damping spring, and a certain damping effect is achieved; through setting up and supporting spacing circular slot and restriction circular column for can play spacing effect to the top base plate, make and avoid the skew to appear at the top base plate after the top base plate atress and rock, guarantee stability and shock-absorbing capacity of device; through setting up the top base plate for can have certain toughness and hardness when the top base plate atress, improve the life of top base plate, through setting up friction rubber pad, make can increase the frictional force of top base plate, avoid the gliding phenomenon of top base plate appearance to appear dangerously in the use.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a high damping vibration-isolating support for a bridge according to the present utility model;
FIG. 2 is a schematic diagram of a cross-sectional side view of a high damping vibration-isolating mount for a bridge according to the present utility model;
FIG. 3 is a schematic top view of a high damping vibration isolation mount for a bridge according to the present utility model;
fig. 4 is a schematic diagram of a cross-sectional side view of a high damping vibration-isolating support for a bridge according to the present utility model.
Main symbol description:
1. a rectangular support base; 2. a circular support groove; 3. a circular support steel plate; 4. a high resistance rubber layer outer ring; 5. a high resistance rubber layer inner ring; 6. a high resistance rubber layer center block; 7. a multi-section support hydraulic column; 8. a top substrate; 9. supporting a damping spring; 10. supporting and limiting circular grooves; 11. limiting the circular post.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Referring to fig. 1 to 4, a high damping vibration-isolating support for a bridge according to the present embodiment is shown. The device comprises a rectangular support base 1, wherein two internal damping mechanisms and two external damping mechanisms are arranged on the rectangular support base 1;
the internal damping mechanism comprises a circular supporting groove 2 formed in a rectangular supporting base 1, a circular supporting steel plate 3 is arranged on the inner wall of the bottom of the circular supporting groove 2, a high-resistance rubber layer outer ring 4, a high-resistance rubber layer inner ring 5 and a high-resistance rubber layer center block 6 are arranged at the top of the circular supporting steel plate 3, and the high-resistance rubber layer outer ring 4, the high-resistance rubber layer inner ring 5 and the high-resistance rubber layer center block 6 are formed by vulcanizing and bonding a high-damping rubber layer with a damping ratio of 15%.
As shown in fig. 2, a deformation gap with a width of up to 5 mm exists between the outer ring 4 of the high-resistance rubber layer and the inner ring 5 of the high-resistance rubber layer, a deformation gap with a width of up to 5 mm exists between the inner ring 5 of the high-resistance rubber layer and the central block 6 of the high-resistance rubber layer, and the combination of the outer ring 4 of the high-resistance rubber layer, the inner ring 5 of the high-resistance rubber layer and the central block 6 of the high-resistance rubber layer of the circular support steel plate 3 is unchanged and sequentially increases downwards.
Through setting up inside damper for can reduce vibrations through high resistance rubber layer outer loop 4, high resistance rubber layer inner loop 5 and high resistance rubber layer center piece 6, the deformation clearance between high resistance rubber layer outer loop 4, high resistance rubber layer inner loop 5 and the high resistance rubber layer center piece 6 can provide deformation space when the device receives pressure, avoids long-term extrusion to cause the damage to high resistance rubber layer outer loop 4, high resistance rubber layer inner loop 5 and high resistance rubber layer center piece 6, effectively prolongs device life.
As shown in fig. 2, the downward thickness of the high-resistance rubber layer outer ring 4, the high-resistance rubber layer inner ring 5, and the high-resistance rubber layer center block 6 linearly increases, increasing the thickness of each layer by 8%.
By linearly increasing the thickness of the high-resistance rubber layer outer ring 4, the high-resistance rubber layer inner ring 5, and the high-resistance rubber layer center block 6, the durability of the device can be effectively increased.
As shown in fig. 2, the external damping mechanism comprises a plurality of multi-section supporting hydraulic columns 7 arranged at the top of a rectangular supporting base 1, a top substrate 8 is fixedly arranged at the top of the multi-section supporting hydraulic columns 7, a plurality of supporting damping springs 9 are fixedly arranged at the top of the rectangular supporting base 1, and the top ends of the supporting damping springs 9 are fixedly connected with the bottom of the top substrate 8.
Through setting up outside damper for can reduce the atress through multisection support hydraulic stem 7 and support damping spring 9, play certain cushioning effect.
As shown in fig. 4, a plurality of limiting circular columns 11 are fixedly mounted at the bottom of the top substrate 8, a plurality of supporting and limiting circular grooves 10 are formed in the top of the rectangular supporting base 1, and the plurality of limiting circular columns 11 extend into the plurality of supporting and limiting circular grooves 10 respectively and are matched with the plurality of supporting and limiting circular grooves 10 respectively.
Through setting up and supporting spacing circular slot 10 and restriction circular column 11 for can play spacing effect to top base plate 8, make avoid top base plate 8 to appear the skew after top base plate 8 atress and rock, guarantee the stability and the shock-absorbing capacity of device.
As shown in fig. 1, the top base plate 8 is composed of a steel plate with toughness, and the surface of the top base plate 8 is provided with an anti-slip rubber pad.
Through setting up top base plate 8 for can have certain toughness and hardness when top base plate 8 atress, improve top base plate 8's life, through setting up the friction rubber pad, make can increase top base plate 8's frictional force, avoid the gliding phenomenon to appear in top base plate 8 in the use dangerous.
The implementation principle of the high-damping vibration isolation support for the bridge in the embodiment of the application is as follows:
a first step of: when in use, the high-resistance rubber layer outer ring 4, the high-resistance rubber layer inner ring 5, the high-resistance rubber layer center block 6 and the circular support steel plates 3 are uniformly and sequentially distributed in the two circular support grooves 2, so that deformation gaps are controlled;
and a second step of: when the vehicle passes through the device, the top substrate 8 can move downwards due to the influence of gravity, and plays an effective supporting role under the damping effect of the supporting damping springs 9 and the multi-section supporting hydraulic columns 7, and when the vehicle is overweight, the top substrate 8 can contact the high-resistance rubber layer outer ring 4, the high-resistance rubber layer inner ring 5 and the high-resistance rubber layer center block 6 to perform effective damping.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (6)
1. The high-damping vibration isolation support for the bridge is characterized by comprising a rectangular support base (1), wherein two inner damping mechanisms and two outer damping mechanisms are arranged on the rectangular support base (1);
the inner damping mechanism comprises a circular supporting groove (2) formed in a rectangular supporting base (1), a circular supporting steel plate (3) is arranged on the inner wall of the bottom of the circular supporting groove (2), a high-resistance rubber layer outer ring (4), a high-resistance rubber layer inner ring (5) and a high-resistance rubber layer center block (6) are arranged at the top of the circular supporting steel plate (3), and the high-resistance rubber layer outer ring (4), the high-resistance rubber layer inner ring (5) and the high-resistance rubber layer center block (6) are formed by vulcanizing and bonding a high-damping rubber layer with a damping ratio of 15%.
2. The high damping vibration isolation support for a bridge according to claim 1, wherein a deformation gap with a width of up to 5 mm exists between the high resistance rubber layer outer ring (4) and the high resistance rubber layer inner ring (5), a deformation gap with a width of up to 5 mm exists between the high resistance rubber layer inner ring (5) and the high resistance rubber layer center block (6), and the combination of the high resistance rubber layer outer ring (4), the high resistance rubber layer inner ring (5) and the high resistance rubber layer center block (6) of the circular support steel plate (3) is unchanged to be gradually increased downwards.
3. A high damping vibration-insulating support for bridge according to claim 2, wherein the downward thickness of the high-resistance rubber layer outer ring (4), the high-resistance rubber layer inner ring (5) and the high-resistance rubber layer center block (6) is linearly increased by 8% for each layer.
4. A high damping vibration-isolating support for bridge according to claim 3, wherein the external damping mechanism comprises a plurality of multi-section supporting hydraulic columns (7) arranged at the top of the rectangular supporting base (1), a top base plate (8) is fixedly arranged at the top of the multi-section supporting hydraulic columns (7), a plurality of supporting damping springs (9) are fixedly arranged at the top of the rectangular supporting base (1), and the top ends of the supporting damping springs (9) are fixedly connected with the bottom of the top base plate (8).
5. The high-damping vibration-isolating support for a bridge as claimed in claim 4, wherein a plurality of limiting round posts (11) are fixedly mounted at the bottom of the top substrate (8), a plurality of supporting limiting round grooves (10) are formed in the top of the rectangular supporting base (1), and the limiting round posts (11) extend into the supporting limiting round grooves (10) respectively and are matched with the supporting limiting round grooves (10) respectively.
6. A high damping vibration-insulating support for bridge according to claim 5, characterized in that said top base plate (8) is composed of a steel plate with toughness, and the surface of said top base plate (8) is provided with an anti-slip rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321892745.4U CN220685766U (en) | 2023-07-19 | 2023-07-19 | High damping shock insulation support for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321892745.4U CN220685766U (en) | 2023-07-19 | 2023-07-19 | High damping shock insulation support for bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220685766U true CN220685766U (en) | 2024-03-29 |
Family
ID=90373300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321892745.4U Active CN220685766U (en) | 2023-07-19 | 2023-07-19 | High damping shock insulation support for bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220685766U (en) |
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2023
- 2023-07-19 CN CN202321892745.4U patent/CN220685766U/en active Active
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