CN100478539C - Vertical shock-absorbing stand with variable rigidity and damping - Google Patents
Vertical shock-absorbing stand with variable rigidity and damping Download PDFInfo
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- CN100478539C CN100478539C CNB2007100652024A CN200710065202A CN100478539C CN 100478539 C CN100478539 C CN 100478539C CN B2007100652024 A CNB2007100652024 A CN B2007100652024A CN 200710065202 A CN200710065202 A CN 200710065202A CN 100478539 C CN100478539 C CN 100478539C
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Abstract
本发明涉及一种变刚度变阻尼竖向隔振/震支座，属于结构振动控制领域。包括上、下连接板(2、1)、具有较小的竖向刚度的预压弹簧(3)、较大的竖向刚度的变刚度补偿弹簧(4)、设置在预压弹簧内的小油阻尼器、设置在补偿弹簧内的大油阻尼器。变刚度补偿弹簧位于下连接板的中心，上端穿入第一补偿支座(11)的第一预留孔(17)中，使补偿弹簧上端处于无约束状态；预压弹簧分布在变刚度补偿弹簧周围；上连接板底面上固定有多个第二补偿支座(12)。大小油阻尼器底端与下连接板固定，上端受第二补偿支座的约束。本发明可以隔离竖直方向上的微小的环境振动，也可隔离竖直方向上的地震动；也可与其它水平隔振/震支座组合形成三向隔振/震支座。
The invention relates to a vertical vibration isolation/seismic support with variable stiffness and variable damping, which belongs to the field of structural vibration control. It includes upper and lower connecting plates (2, 1), a preload spring (3) with relatively small vertical stiffness, a variable stiffness compensation spring (4) with relatively large vertical stiffness, and a small spring arranged in the preload spring. Oil damper, large oil damper set in compensation spring. The variable stiffness compensation spring is located at the center of the lower connecting plate, and the upper end penetrates into the first reserved hole (17) of the first compensation support (11), so that the upper end of the compensation spring is in an unconstrained state; the preload spring is distributed in the variable stiffness compensation Around the spring; a plurality of second compensating supports (12) are fixed on the bottom surface of the upper connecting plate. The bottom ends of the large and small oil dampers are fixed to the lower connecting plate, and the upper ends are bound by the second compensating support. The present invention can isolate tiny environmental vibrations in the vertical direction, and can also isolate earthquake vibrations in the vertical direction; it can also be combined with other horizontal vibration isolation/seismic support to form a three-way vibration isolation/seismic support.
Description
Technical field
The present invention relates to the vertical vibration isolation of a kind of change stiffness and damping changing/shake bearing, belong to field of vibration control.
Background technology
Along with the continuous development of urban track traffic and elevated line, the also more and more serious health that is endangering the townsfolk of ambient vibration of bringing out by track traffic and elevated line; The large-and-medium size cities population increase, the urban space utilization rate improves constantly, increasing building next-door neighbour builds the traffic route, make ambient vibration also loom large more to the influence that people cause, studies show that the ambient vibration that is caused by track traffic and elevated line is based on vertical motion, yet, the control device of ambient vibration and technology are still not mature enough, and domestic also do not have the ambient vibration control technology product of moulding available at present.
It is generally acknowledged that horizontal earthquake starts to control making usefulness to structural damage, but a large amount of earthquake disasters shows that vertical earthquake can not be ignored the influence of works, its effect surpasses horizontal earthquake action sometimes.Because the vertical rigidity of structure is big, its vertical natural period is close with the vertical seismic wave predominant period, thereby the vertical vibrant characteristic of structure merits attention and studies.Though seismic isolation technology is ripe relatively at home and abroad, and industrialization day by day, what present seismic isolation technology was isolated mainly is the earthquake motion of horizontal direction, and vertical earthquake motion is not almost had isolating affection.The vertical earthquake isolating technological development becomes the focus of each big universities and colleges and research institution's research.
To the vertical earthquake isolating problem of structure, the foreign scholar proposed some three-dimensional shock isolation supports, but because vertical rigidity is bigger, was difficult to again provide in limited scope and isolates the required damping of vertical geological process, and vertical energy dissipation capacity and isolating affection are limited; The employing disk spring that domestic scholars also once proposed is isolated vertical earthquake motion, has started the precedent of China's research level/vertical earthquake isolating bearing; But because disk spring is vertical load bearing element, vertical rigidity is bigger, and vibration is worked hardly to isolation environment, and disk spring can not provide resistance to tension, and this hides some dangers in earthquake for isolation structure temporarily.
Summary of the invention
The objective of the invention is to solve above-mentioned two problems that press for solution: isolate vertical ambient vibration and vertical earthquake motion.Get rid of ambient vibration for a long time to the interference of resident's daily life, isolate the transmission of vertical earthquake motion to superstructure.The present invention can take into account the influence of ambient vibration and earthquake motion simultaneously, isolates two kinds of vibrations simultaneously.
For achieving the above object, the technical solution used in the present invention is: become the vertical vibration isolation of stiffness and damping changing/shake bearing, comprise upper junction plate, lower connecting plate, go up the pre-compressed spring with less vertical rigidity between the lower connecting plate, the change rigidity counterbalance spring of bigger vertical rigidity, be arranged on little oil damper in the pre-compressed spring, be arranged on the interior big oil damper of counterbalance spring; Wherein, become the center that the rigidity counterbalance spring is positioned at lower connecting plate, bottom and lower connecting plate are fixed, the upper end penetrates in first preformed hole that is fixed on the compensation of first on upper junction plate bottom surface bearing, first preformed hole is oval, and the part that the upper end of counterbalance spring penetrates wherein can be free to slide in the in the vertical direction certain displacement scope.Pre-compressed spring is distributed in and becomes around the rigidity counterbalance spring; Be fixed with a plurality of second compensation bearings on the upper junction plate bottom surface, the second compensation bearing is provided with vertical intercommunicating pore, and horizontal second preformed hole, second preformed hole are oval.Described big oil damper bottom and lower connecting plate are fixed, insert in the intercommunicating pore of the second compensation bearing corresponding with it its upper end, pass the big keyhole of second preformed hole and big oil damper upper end with the shearing bolt, and vertically leaving a fixed gap, shear bolt and can be free to slide within the specific limits at the vertical direction of second preformed hole; Big oil damper is made of first fuel tank, first pull bar, first hole, first oil and big keyhole, be full of first oil in first fuel tank, the first pull bar base plate places first fuel tank internal, first fuel tank is divided into two spaces, first oil can only flow in two spaces by first hole on first pull bar, and big keyhole is positioned at the top of first pull bar.
Described little oil damper bottom and lower connecting plate are fixed, insert in the intercommunicating pore of the second compensation bearing corresponding with it its upper end, pass little keyhole on second preformed hole of second compensation on the bearing and the little oil damper with the shearing bolt, and vertically leaving a fixed gap, shear bolt and can be free to slide within the specific limits at the vertical direction of second preformed hole.Little oil damper is made of second fuel tank, second pull bar, second hole, second oil and spile hole, be full of second oil in second fuel tank, the base plate of second pull bar places second fuel tank internal, second fuel tank is divided into two spaces, and second oil can only flow in two spaces by second hole on second pull bar.Little keyhole is positioned at the top of second pull bar.Little oil damper bottom and lower connecting plate are fixed.
The second compensation bearing only in the next interim or bigger vibration of structure appearance of earthquake, is just started working so-called change damping when the bearing vertical displacement surpasses a threshold value.
Second preformed hole is oval, shears bolt and can be free to slide within the specific limits at the vertical direction of second preformed hole.Insert different bolts as required, make the pore size between the bolt and second preformed hole adjustable.
Described big oil damper and little oil damper are cross and arrange in the middle of last lower connecting plate, be that big oil damper is in the centre, little oil damper is distributed on four angles, collaborative work, both can provide vertical damping power, can be used as vertical ways again, promptly they have less vertical rigidity and enough horizontal rigidities, can retrain the horizontal distortion of vertical support.Pre-compressed spring supports upper load, has less vertical rigidity, and is very sensitive to the high frequency microvibration, is mainly used to isolate the vertical microvibration and the ambient vibration of high frequency.Become the rigidity counterbalance spring and have bigger vertical rigidity; In earthquake arriving or structure bigger vibration appears only, when surpassing the certain displacement limit value, the bearing vertical displacement just starts working, the pulling force and the holding power of certain rigidity can be provided, change the shock insulation rigidity of former shock insulation structure, can prevent the structure destruction of under the excessive situation of vertical displacement, toppling.
Big oil damper and little oil damper are arranged can also be Y shape or * shape or * shape.
Have the flanging that prevents the pre-compressed spring unstability around the last lower connecting plate, the height of flanging can design according to the size of precompression and the height of bearing.
The present invention can with various horizontal shock insulation members, as combinations such as lead rubber bearing, metal friction sliding isolated bearings, form three-dimensional vibration isolation/shake device.
The invention has the advantages that:
1. the present invention both can isolate the small ambient vibration on the vertical direction, also can isolate vertical earthquake motion.
2. the present invention adopts big or small oil damper, can be arranged in difformity as required, and collaborative work both can provide bigger vertical damping power, can be used as the ways of vertical motion again, and horizontal movement appears in the restriction vertical support, and is flexible and changeable.
3. therefore the present invention can change the rigidity and the damping of bearing according to the difference of vertical motion amplitude automatically owing to adopted the compensation bearing.
4. this vibration isolation/shake bearing in the vertical direction, the power that not only can provide support can also provide enough pulling force.
5. the present invention can make up with existing horizontal shock isolating pedestal, form three-dimensional vibration isolation/shake bearing, applied range, vibration damping shock insulation applicable to subway, viaduct building structure along the line, the vibration damping shock insulation of building such as high-new precision instrument is installed, the vibration isolation of ancient building/shake is reinforced, and any occasion that existing laminated rubber bases was suitable for.
Description of drawings
Fig. 1 is the structure diagram of an embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 (a) is big oil damper front view;
Fig. 4 (b) is big oil damper left view;
Fig. 5 (a) is little oil damper front view;
Fig. 5 (b) is little oil damper left view;
Fig. 6 is big oil damper pull bar vertical view;
Fig. 7 is little oil damper pull bar vertical view;
Fig. 8 (a) is the first compensation bearing front view;
Fig. 8 (b) is the first compensation bearing left view;
Fig. 8 (c) is the first compensation bearing vertical view;
Fig. 9 (a) is the second compensation bearing front view;
Fig. 9 (b) is the second compensation bearing left view;
Fig. 9 (c) is the second compensation bearing vertical view;
Figure 10 is the structure diagram of second kind of embodiment of the present invention;
Figure 11 is the structure diagram of the third embodiment of the present invention;
Among the figure, 1, lower connecting plate, 2, upper junction plate, 3, pre-compressed spring, 4, counterbalance spring 5, first pull bar, 6, first oil, 7, first hole, 8, second pull bar, 9, second oil, 10, second hole, 11, the first compensation bearing, 12 second compensation bearings, 13, second preformed hole, 14, shear bolt, 15, first fuel tank, 16, second fuel tank, 17, first preformed hole, 18, big keyhole, 19, little keyhole, 20, intercommunicating pore, 21, horizontal lead rubber bearing, 22, the metal friction slip support abutment.
The specific embodiment
Specify embodiments of the invention below in conjunction with accompanying drawing.
As shown in Figure 1, become the vertical vibration isolation of stiffness and damping changing/shake seat structure referring to Fig. 1, Fig. 2, Fig. 3, comprising: the change rigidity counterbalance spring 4 of the pre-compressed spring with less vertical rigidity 3 between upper junction plate 2, lower connecting plate 1, the upper and lower junction plate, big vertical rigidity, be arranged on little oil damper in the pre-compressed spring 3, be arranged on the interior big oil damper of counterbalance spring 4.Wherein, become the vertical rigidity of the vertical rigidity of rigidity counterbalance spring 4 greater than pre-compressed spring 3, can be 50 to 500 times, preferable range of choice is 80 to 150 times.Becoming rigidity counterbalance spring 4 upper ends penetrates in first preformed hole 17 of the compensation bearing 11 that is fixed on the upper junction plate bottom surface, first preformed hole 17 is oval, and the part that the upper end of counterbalance spring 4 penetrates wherein can be free to slide in the in the vertical direction certain displacement scope.Big oil damper bottom and lower connecting plate 1 are fixing, and big oil damper is made of first fuel tank 15, first pull bar 5, first hole 7, first oil 6 and big keyhole 18, referring to Fig. 4.Insert in the intercommunicating pore 20 of the second compensation bearing 12 corresponding with it first pull bar, 5 upper ends, passes big keyhole 18 on second preformed hole 13 and the pull bar with shearing bolt 14, and vertically leaving a fixed gap.First hole 7 radial on the pull bar base plate is arranged, referring to Fig. 6.
Little oil damper is made of second fuel tank 16, second pull bar 8, second hole 10, second oil 9 and spile hole 19, referring to Fig. 5.Little oil damper bottom and lower connecting plate 1 are fixing, insert in the intercommunicating pore 20 of second fixing on upper junction plate 2 bottom surfaces compensation bearing 12 second pull bar, 8 upper ends, pass spile hole 19 on second preformed hole 13 and the pull bar on the second compensation bearing 12 with shearing bolt 14, and vertically leaving a fixed gap.Second hole 10 is evenly along the circumferential direction arranged on the pull bar base plate, referring to Fig. 7.
Second preformed hole 13 is oval, and referring to Fig. 8, shearing bolt 14 can be free to slide in the vertical direction certain limit in second preformed hole 13, inserts different bolts as required, makes the pore size between the bolt and second preformed hole 13 adjustable.
The size oil damper is cross and arranges in the middle of last lower connecting plate, be that big oil damper is in the centre, little oil damper is distributed on four angles, collaborative work, referring to Fig. 2, both can provide vertical damping power, can be used as vertical ways again, be that they have less vertical rigidity and enough horizontal rigidities, can retrain the horizontal distortion of vertical support.Pre-compressed spring 3 supports upper load, has less vertical rigidity, and is very sensitive to the high frequency microvibration, is mainly used to isolate the vertical microvibration and the ambient vibration of high frequency.Become rigidity counterbalance spring 4 and have bigger vertical rigidity; In earthquake arriving or structure bigger vibration appears only, when surpassing the certain displacement limit value, the bearing vertical displacement just starts working, the pulling force and the holding power of certain rigidity can be provided, change the shock insulation rigidity of former shock insulation structure, can prevent the structure destruction of under the excessive situation of vertical displacement, toppling.
During duty (only ambient vibration is done the time spent), vertical vibration isolation/shake bearing is in the undamped elastic state at ordinary times, and upper load is born by pre-compressed spring 3 fully, and the rigidity of the pre-compressed spring 3 of vertical support is less, can isolate the high frequency microvibration; The upper end of counterbalance spring 4 penetrates first preformed hole 17 of the first compensation bearing 11, be in no restrained condition, do not transmit vertical load, insert in the second compensation bearing 12 that is fixed on upper junction plate 2 bottom surfaces the one or two pull bar 5,8 upper ends of size oil damper, pass spile hole 19 on second preformed hole 13 and the pull bar on the second compensation bearing 12 with shearing bolt 14, and vertically leaving a fixed gap, make the upper end of the one or two pull bar 5,8 in certain vertical displacement scope, not bear the shearing that microvibration is transmitted.
When earthquake is arrived, ground vibration is bigger, amplitude is higher, and the vertical displacement of bearing surpasses default regime of elastic deformation, and the pull bar of big or small oil damper is under the effect of upper junction plate 2, produce big displacement, when displacement surpasses a threshold value, drive big or small oil damper work, make vertical support enter damping state by the undamped state, oil shuttles back and forth in the hole on pull bar, earthquake energy; Simultaneously, when the vertical displacement of upper junction plate 2 surpasses a threshold value, the first compensation bearing 11 will drive counterbalance spring 4 and start working, and increase the vertical extensional rigidity and the compressional stiffness of shock isolating pedestal, avoid bearing bigger vertical deformation to occur and cause danger.When earthquake finished, vertical vibration isolation/shake bearing recovered elastic stage by the elastoplasticity duty, and has good reset function, maintenance-free under spring action.Therefore becoming the vertical vibration isolation of stiffness and damping changing/shake bearing can well isolate the influence of vertical earthquake to works.
As shown in figure 10, be another embodiment of the present invention, be composed in series that vertical support wherein is identical with above example structure by vertical support and lead for retractable pencil laminated rubber damping bearing 21.
As shown in figure 11, be another embodiment of the present invention, be composed in series that vertical support wherein is identical with above example structure by vertical support and metal friction slip support abutment 22.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100652024A CN100478539C (en) | 2007-04-06 | 2007-04-06 | Vertical shock-absorbing stand with variable rigidity and damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100652024A CN100478539C (en) | 2007-04-06 | 2007-04-06 | Vertical shock-absorbing stand with variable rigidity and damping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101029539A CN101029539A (en) | 2007-09-05 |
| CN100478539C true CN100478539C (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100652024A Expired - Fee Related CN100478539C (en) | 2007-04-06 | 2007-04-06 | Vertical shock-absorbing stand with variable rigidity and damping |
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Families Citing this family (14)
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| CN102953452B (en) * | 2012-10-26 | 2015-07-29 | 上海昭瑞减震科技有限公司 | The combined earthquake isolating equipment of the Self-resetting that a kind of vertical bearing capacity is high |
| CN105735502B (en) * | 2016-02-12 | 2018-03-30 | 捷能系统建材（上海）有限公司 | A kind of anti-torsion shock insulation tensile structure of architectural engineering |
| CN107060129B (en) * | 2017-06-15 | 2022-04-22 | 金陵科技学院 | A damping isolation bearing |
| CN107905094B (en) * | 2017-12-12 | 2018-08-07 | 郑州建工集团有限责任公司 | A kind of adaptive bridge pad |
| CN108457384B (en) * | 2018-01-18 | 2019-10-18 | 同济大学 | A 3D Isolation/Vibration Bearing with Adaptive Stiffness Characteristics |
| CN108457177A (en) * | 2018-05-25 | 2018-08-28 | 辽宁工业大学 | Fixed point with runback bit function reverses damping supporting seat |
| CN109577509A (en) * | 2018-11-28 | 2019-04-05 | 江苏科技大学 | A kind of shock isolating pedestal |
| CN109676744A (en) * | 2018-11-30 | 2019-04-26 | 颍上县皖佳保木业有限责任公司 | A kind of seamless edge banding apparatus of timber processing |
| CN109736446B (en) * | 2019-01-03 | 2020-10-30 | 永富建工集团有限公司 | Vertical vibration isolation/shock support with variable rigidity |
| CN111335478B (en) * | 2019-12-26 | 2021-11-05 | 中国建筑股份有限公司 | Compression-shear separation type variable-rigidity shock isolation support and manufacturing method thereof |
| CN111305387B (en) * | 2019-12-26 | 2021-11-02 | 中国建筑股份有限公司 | Compression-shear separation type variable-rigidity rubber support and manufacturing method thereof |
| CN112682457A (en) * | 2021-01-07 | 2021-04-20 | 天津城建大学 | Vibration isolation/vibration support |
| CN113958014B (en) * | 2021-04-20 | 2022-12-06 | 武汉工程大学 | Self-adaptive variable-rigidity three-dimensional shock isolation/vibration device |
| CN113323479A (en) * | 2021-05-28 | 2021-08-31 | 南通蓝科减震科技有限公司 | Novel spring damping vibration reduction and isolation support |
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2007
- 2007-04-06 CN CNB2007100652024A patent/CN100478539C/en not_active Expired - Fee Related
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| CN101029539A (en) | 2007-09-05 |
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