CN201221215Y - Vertical rigidity-changeable shock insulation support - Google Patents
Vertical rigidity-changeable shock insulation support Download PDFInfo
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- CN201221215Y CN201221215Y CNU200820080615XU CN200820080615U CN201221215Y CN 201221215 Y CN201221215 Y CN 201221215Y CN U200820080615X U CNU200820080615X U CN U200820080615XU CN 200820080615 U CN200820080615 U CN 200820080615U CN 201221215 Y CN201221215 Y CN 201221215Y
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- steel cylinder
- shock insulation
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Abstract
The utility model relates to a vertical rigidity-variable shock-insulating steadier, which belongs to the field of structure shock control. The steadier comprises steel barrels, rubbers, a lead core and a rigidity-variable guiding unit, and wherein, the rigidity-variable guiding unit comprises a shaft, a top plate and a conical rigidity-variable curved plate. The upper end of the shaft is firmly connected with the top plate; one end of the conical rigidity-variable curved plate is firmly connected with the top plate; the other end is firmly connected with the side of the shaft; below the rigidity-variable curved plate, the rubbers and the steel barrels are orderly and radially arranged on the shaft at intervals; the horizontally arranged lead core penetrates the multiple layers of steel barrels and rubbers to be intersected with the shaft; and the lower end surface of all the rubbers and steel barrels forms a conical space with a small upper opening and a large lower opening. The steadier has high initial rigidity and low yield rigidity in a vertical direction and has enough vertical deformability and restorability, the yielded lead can adjust vertical shock-insulating rigidity according to vertical deformation, and therefore the steadier can effectively insulate vertical shock and keep steady when no shock occurs.
Description
Technical field
The utility model relates to a kind of vertical rigidity changeable shock insulation support saddle, belongs to field of vibration control.
Background technology
It is generally acknowledged, horizontal earthquake starts to control to make to structural deterioration to be used, but a large amount of earthquake disasters show, vertical earthquake can not be ignored the influence of works, especially tall and slender structure, large-span structure and quality, the vertical structure pockety of rigidity, the vertical rigidity of these structures is generally less than normal, and the vertical natural period is close with the vertical earthquake motion predominant period, thereby in earthquake, very easily resonance takes place and destroy, how to control the focus that vertical earthquake motion becomes various countries' scholar's research.
The base isolation technology is by between building bottom and basic end face the less shock insulation layer of rigidity being set; to reduce the fundamental frequency of structural vibration; prolong its vibration period; thereby avoid the main energy frequency band of earthquake motion; superstructure and ground vibration are isolated; reduce the superstructure reaction, reach the purpose that protection agent structure and inner facility thereof are not damaged.From the nineties in last century so far, seismic isolation technology has obtained developing rapidly and using in more than 20 countries such as Japan, China, the U.S., Italy, has had more than 2000 structure to adopt this technology in the world.
Yet seismic isolation technology is mainly horizontal shock insulation at present, and effect is not controlled in vertical earthquake motion, and this is totally unfavorable to structural safety; In addition, the technical development of structure vertical earthquake isolating is slow, reason be earthquake isolating equipment at first to bear superstructure huge from heavy load, require to have less vertical rigidity again, to guarantee the stability of superstructure under general load (as ambient vibration and wind load) effect simultaneously, contradiction between this three is difficult to be in harmonious proportion, and therefore, the research and development of novel vertical earthquake isolating equipment become a world-famous puzzle.
For the vertical earthquake isolating problem of structure, Chinese scholars once proposed some earthquake isolating equipments, and some device is because vertical rigidity is bigger, was out of shape for a short time, was difficult to the damping force that provides enough in the limited deformation range, and isolating affection is not good enough; Some device vertical rigidity is enough little, but is out of shape excessively, is difficult to guarantee the stability of superstructure under general load action, therefore is difficult to be used and promote.
The utility model content
The purpose of this utility model is to overcome the above-mentioned defective of existing vertical earthquake isolating equipment, a kind of vertical rigidity changeable shock insulation support saddle is provided, this bearing in the vertical direction has bigger initial stiffness and less surrender rigidity, have enough vertical deformation ability and reset capability, and can regulate the vertical rigidity of bearing according to the vertical deformation of bearing, so can effectively isolate vertical earthquake motion and when no earthquake, keep stable in lead surrender back; On the horizontal direction, bearing rigidity is very big, does not almost have distortion; The utility model simple structure, easily processing and fabricating also can be combined to form three-dimensional shock isolation support with other horizontal shock isolating pedestals.
For achieving the above object, the utility model has adopted following technical scheme: this bearing includes steel cylinder, rubber, lead for retractable pencil and change rigid type guiding device, become the rigid type guiding device and include axle, the change stiffness curved surface plate of top board and taper, wherein, the end that the shaft section area is bigger is fixedlyed connected with top board, one end of the change stiffness curved surface plate of taper is fixedlyed connected with top board, the other end is fixedlyed connected with the side of axle, according to the ascending order of cross sectional area, alternate successively being fixed on of multilayer rubber and a plurality of steel cylinder is positioned on the side that becomes the following axle of stiffness curved surface plate, and the lead for retractable pencil of horizontal arrangement passes multilayer steel cylinder and rubber and axle and intersects; The all rubber and the lower surface of steel cylinder form the cone space of a young lower port in upper end big (hereinafter to be referred as up-small and down-big).
Shape, area that described taper becomes the upper port of stiffness curved surface plate are identical with shape, the area of the lower port of the cone space of the lower surface formation of all rubber and steel cylinder, and the height of two tapers is identical.
The cross section of described axle, steel cylinder and rubber be circular or for square or be polygon.
Described steel cylinder and rubber are the conically shaped of upper port area greater than the lower port area, adopt sulfurization technology bonding or other adhesive technologys are bonding between axle and the rubber and between steel cylinder and the rubber.
Described axle is the diminished shaft of upper surface area greater than the lower surface area.
The metal cylinder that described steel cylinder is made by copper or alloy is replaced.
Described rubber is common natural rubber, also can be high-damping rubber.
The number of described lead for retractable pencil is 1.
The number of described lead for retractable pencil is evenly arranged along the circumferencial direction of axle greater than 1.
The curvature of described change stiffness curved surface plate can be zero, also can be constant, also can outer vertically direction increases successively or reduces.
Described lead for retractable pencil and axle quadrature.
This bearing can be used for the base isolation layer of building structure, isolates vertical earthquake motion.
When no geological process, when ambient vibration or general wind load were only arranged, the lead for retractable pencil in the bearing was in crystalline state, has very big rigidity, so the stress in the rubber do not change, and whole bearing does not produce vertical deformation, keeps stable;
When earthquake is arrived, violent ground motion makes the bearing top board be subjected to the huge inertia force of superstructure, this inertia force is assigned to each layer rubber and steel cylinder by becoming the rigid type guiding device, make rubber produce the vertical shearing distortion at first near shaft position, and drive steel cylinder generation vertical shearing motion, under the shear action of rubber and steel cylinder, lead near shaft position is at first surrendered, rigidity reduces rapidly, increase along with vertical deformation, shear strain takes place in rubber outer vertically direction successively, and the also outer vertically direction of lead is surrendered successively, effective isolation the transmission of ground motion energy to superstructure.
Advantage of the present utility model is:
1) the utility model adopts and becomes rigidity Design, can make isolating affection better.Be mainly reflected in following three aspects: the first, lead for retractable pencil becomes rigidity, adopts lead for retractable pencil that damping force is provided, can make bearing have bigger initial stiffness and less surrender rigidity, can guarantee the stability of superstructure under general load action, under geological process, surrender earthquake energy; Second, multi-turn rubber becomes rigidity, the vertical shearing area of the rubber of close shaft position is less, rigidity is less, the vertical shearing area of abaxial rubber is bigger, and rigidity is also bigger, when the bearing vertical deformation increases, the rigidity of this bearing also increases gradually, and this structure can avoid bearing to destroy because of resonance takes place constant rigidity under shock effect randomly; The 3rd, guiding device becomes rigidity, utilize the variation that becomes stiffness curved surface plate curvature to realize becoming rigidity, the curvature that becomes the stiffness curved surface plate can design according to the shockproof requirements of different regions different structure, and become the stiffness curved surface plate and the vertical deformation of bearing can be assigned to each layer steel plate and rubber by the variation of its curvature, prevent excessive destruction of local rubber shear strain.
2) the utlity model has bigger vertical deformation ability and energy dissipation capacity.
3) steel cylinder of the utility model bearing employing can provide certain vertical holding power, and therefore, bearing has enough vertical bearing capacities.
Description of drawings
Fig. 1 is an elevation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is for becoming rigid type guiding device elevation;
Fig. 5 is the top board plan view;
Fig. 6 is the structure diagram of embodiment 1 of the present utility model;
Fig. 7 is the structure diagram of embodiment 2 of the present utility model;
Among the figure: 1, axle, 2, top board, 3, become the stiffness curved surface plate, 4, bolt hole, 5, steel cylinder, 6, rubber, 7, lead for retractable pencil, 8, cover plate, 9, the lead for retractable pencil hole, 10, leg, 11, laminated rubber lead for retractable pencil shock isolating pedestal.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment 1:
As shown in Figure 2, this bearing includes and becomes rigid type guiding device, lead for retractable pencil 7 and a plurality of steel cylinder 5 and rubber 6 (rubber 6 herein is into having certain thickness rubber ring), and steel cylinder 5 and rubber 6 are the taper shape of upper port area greater than the lower port area.The structure of change rigid type guiding device includes axle 1, top board 2 and becomes stiffness curved surface plate 3 three parts as shown in Figure 4, and the curvature that becomes stiffness curved surface plate 3 is zero.The big end of axle 1 diameter is fixedlyed connected with top board 2, and an end of the change stiffness curved surface plate 3 of taper is fixedlyed connected with top board 2, and the other end is fixedlyed connected with the side of axle 1.Axle 1 outside is surrounded by the certain thickness rubber 6 of a circle, and rubber 6 outsides are with a steel cylinder 5, and the load-bearing main body of multilayer rubber 6 and the radially bonding formation bearing of a plurality of steel cylinders 5 is between axle 1 and the rubber 6 and all adopt sulfurization technology bonding between steel cylinder 5 and the rubber 6.There are four lead for retractable pencils 7 of quadrature to pass multilayer steel cylinder 5 and rubber 6 on the bearing inner horizontal direction, with axle 1 quadrature, as shown in Figure 3.The concrete processing method of lead for retractable pencil 7 is: each steel cylinder 5 is provided with four lead for retractable pencil holes 9 that size is identical, must guarantee in steel cylinder 5 installation processes that lead for retractable pencil hole 9 (see figure 1)s of each steel cylinder 5 align mutually, treat that steel cylinder is after vulcanization of rubber bonding is finished, in lead for retractable pencil hole 9, irritate plumbous, after lead cools off fully, cover plate 8 is covered and tightens sealing.The utility model adopts lead for retractable pencil 7 that damping force is provided, and has bigger initial stiffness and less surrender rigidity, can guarantee the stability of superstructure under general load action, and can surrender earthquake energy under geological process.
The size of lead for retractable pencil 7 and bar number are decided by the required damping of actual engineering in the present embodiment, can be horizontal quadrature and distribute four, also can be two, or more of distributing symmetrically.
The axle 1 and the cross section of steel cylinder 5 can be for circular or be square or be regular polygon.The all rubber 6 and the lower surface of steel plate 5 form a up-small and down-big cone space (see figure 2).
The diameter ratio of steel cylinder 5 upper and lower ports, the thickness of rubber 6, curvature be size, the bar of the ratio of difference and the height of taper of the taper upper and lower end face diameter that enclosed of zero change stiffness curved surface plate and lead for retractable pencil 7 count fibrous root according to the vertical load of bearing, allow distortion, shock insulation rigidity and required damping force to design.Steel cylinder 5 also can be substituted by the tube that other hard metals or alloy are made.
Along the axle 1 radially outward (present embodiment is the center with the axial line of axle 1, with the direction away from axle 1 axial line serves as outer), the diameter of steel cylinder 5 increases gradually, tube is high to be increased successively, and rubber 6 diameters of close axle 1 position are with highly all less, and the vertical shear that can bear is also less, therefore, when axle 1 was subjected to vertical active force, shear strain at first took place in the rubber 6 of close axle 1 position, and forced the lead 7 of close axle 1 position at first to be surrendered.
The height of the cone-shaped space of the big lower end of upper port young (hereinafter to be referred as up big and down small) that the change stiffness curved surface plate 3 that becomes the rigid type guiding device and top board 2 are surrounded up-small and down-big cone-shaped space of bearing bottom steel cylinder 5 and rubber 6 formation during with no stress is identical, and the large port of two cone-shaped spaces is the circle of same diameter.This structure has two advantages: the first, and under bigger vertical uniform load q, can make bearing distortion be evenly distributed to each layer rubber, avoid local rubber shear strain excessive and destroy; The second, the vertical rigidity of bearing is constantly increased along with the increase of vertical deformation, avoid bearing under shock effect randomly, to destroy because of resonance takes place constant rigidity.
All steel cylinders 5 are up big and down small conical design with axle 1, and this method for designing can increase the vertical bearing capacity of bearing, reduces rubber tensile failure takes place when shear strain; When axle 1 moves downward, rubber 6 on every side will produce shear strain, outside taper steel cylinder 5 can prevent that rubber 6 from producing horizontal pull in shear strain, and the holding power that necessarily makes progress can be provided, and the size of holding power is directly proportional with the height of steel cylinder 5, be directly proportional with steel cylinder 5 upper and lower port diameter ratios, be that steel cylinder 5 is high more, available holding power is big more, and steel cylinder 5 upper and lower port diameter ratios are big more, available holding power is also big more, otherwise then more little.
Embodiment 2:
Fig. 6 is another kind of embodiment of the present utility model, and the structure of present embodiment and embodiment 1 is basic identical, and it is non-vanishing that difference only is to become the curvature of the change stiffness curved surface plate 3 in the rigid type guiding device, but ever-increasing along axle 1 outward direction.This design can make isolation structure when suffering rarely occurred earthquake, the rigidity of bearing is along with the non-linear increase of the increase of vertical deformation, i.e. distortion is big more, and the vertical rigidity increase of bearing is fast more, therefore can guarantee further that bearing can not produce excessive distortion and shear failure takes place.
The curvature of the change stiffness curved surface plate 3 in the change rigid type guiding device can design as the case may be and decide.
Fig. 7 is the three-dimensional shock isolation support that the vertical support in the utility model is connected with laminated rubber lead for retractable pencil shock isolating pedestal 11 and formed, vertical support wherein is identical with above example structure, three-dimensional shock isolation support is level of isolation and vertical earthquake motion simultaneously, level and vertically all have bigger initial stiffness and less surrender rigidity, distortion is big and reset capability is strong.
The utility model bearing also can be combined to form three-dimensional shock isolation support with other horizontal shock isolating pedestals, and as being composed in series three-dimensional shock isolation support with the metal friction sliding isolated bearing, vertical support wherein is identical with above example structure.
Claims (10)
1, vertical rigidity changeable shock insulation support saddle is characterized in that: include steel cylinder (5), rubber (6), lead for retractable pencil (7) and become the rigid type guiding device; Become the change stiffness curved surface plate (3) that the rigid type guiding device includes axle (1), top board (2) and taper; Wherein, fixedly connected with top board (2) in the upper end of axle (1), and an end of the change stiffness curved surface plate (3) of taper is fixedlyed connected with top board (2), and the other end is fixedlyed connected with the side of axle (1); Radially alternate successively being fixed on of multilayer rubber (6) and a plurality of steel cylinder (5) becomes on the following axle (1) of stiffness curved surface plate (3); The lead for retractable pencil of horizontal arrangement (7) passes multilayer steel cylinder (5) and intersects with rubber (6) and axle (1); The lower surface of all rubber (6) and steel cylinder (5) forms the big cone space of the young lower port in upper end.
2, vertical rigidity changeable shock insulation support saddle according to claim 1, it is characterized in that: shape, area that described taper becomes the upper port of stiffness curved surface plate (3) are identical with shape, the area of the lower port of the cone space of the lower surface formation of all rubber (6) and steel cylinder (5), and the height of two tapers is identical.
3, according to claim 1 or the described vertical rigidity changeable shock insulation support saddle of claim 2, it is characterized in that: the cross section of described axle (1), steel cylinder (5) and rubber (6) is for circular or for square or be polygon.
4, vertical rigidity changeable shock insulation support saddle according to claim 1 is characterized in that: described steel cylinder (5) can be replaced by the metal cylinder that copper or alloy are made.
5, according to claim 1 or claim 2 or the described vertical rigidity changeable shock insulation support saddle of claim 4, it is characterized in that: described steel cylinder (5) and rubber (6) are the taper of upper port area greater than the lower port area, adopt sulfurization technology bonding between axle (1) and the rubber (6) and between steel cylinder (5) and the rubber (6).
6, according to claim 1 or claim 2 or the described vertical rigidity changeable shock insulation support saddle of claim 4, it is characterized in that: the number of described lead for retractable pencil (7) is 1.
7, according to claim 1 or claim 2 or the described vertical rigidity changeable shock insulation support saddle of claim 4, it is characterized in that: the number of described lead for retractable pencil (7) is also evenly arranged along the circumferencial direction of axle (1) greater than 1.
8, according to claim 1 or claim 2 or the described vertical rigidity changeable shock insulation support saddle of claim 4, it is characterized in that: the curvature of described change stiffness curved surface plate (3) is into zero or increase gradually by from inside to outside direction or reduce for constant or along axle (1).
9, vertical rigidity changeable shock insulation support saddle according to claim 1 is characterized in that: described axle (1) is the taper of upper surface area greater than the lower surface area.
10, vertical rigidity changeable shock insulation support saddle according to claim 1 is characterized in that: described lead for retractable pencil (7) and axle (1) quadrature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820080615XU CN201221215Y (en) | 2008-05-16 | 2008-05-16 | Vertical rigidity-changeable shock insulation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820080615XU CN201221215Y (en) | 2008-05-16 | 2008-05-16 | Vertical rigidity-changeable shock insulation support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221215Y true CN201221215Y (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820080615XU Expired - Fee Related CN201221215Y (en) | 2008-05-16 | 2008-05-16 | Vertical rigidity-changeable shock insulation support |
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| Country | Link |
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| CN (1) | CN201221215Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275442B (en) * | 2008-05-16 | 2010-06-02 | 北京工业大学 | Vertical rigidity changeable shock insulation support saddle |
| CN115992615A (en) * | 2023-03-21 | 2023-04-21 | 北京建筑大学 | Vertical shock insulation device of rubber shearing formula |
| CN116446553A (en) * | 2023-05-30 | 2023-07-18 | 中国地震局工程力学研究所 | Vertical shock insulation device capable of realizing vertical large deformation |
-
2008
- 2008-05-16 CN CNU200820080615XU patent/CN201221215Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275442B (en) * | 2008-05-16 | 2010-06-02 | 北京工业大学 | Vertical rigidity changeable shock insulation support saddle |
| CN115992615A (en) * | 2023-03-21 | 2023-04-21 | 北京建筑大学 | Vertical shock insulation device of rubber shearing formula |
| CN116446553A (en) * | 2023-05-30 | 2023-07-18 | 中国地震局工程力学研究所 | Vertical shock insulation device capable of realizing vertical large deformation |
| CN116446553B (en) * | 2023-05-30 | 2023-09-15 | 中国地震局工程力学研究所 | Vertical shock insulation device capable of realizing vertical large deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 |