CN1594775A - Semiactive piezoelectric friction damper - Google Patents
Semiactive piezoelectric friction damper Download PDFInfo
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- CN1594775A CN1594775A CN 200410020999 CN200410020999A CN1594775A CN 1594775 A CN1594775 A CN 1594775A CN 200410020999 CN200410020999 CN 200410020999 CN 200410020999 A CN200410020999 A CN 200410020999A CN 1594775 A CN1594775 A CN 1594775A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract 2
- 230000035939 shock Effects 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 4
- 229910001369 Brass Inorganic materials 0.000 abstract description 2
- 239000010951 brass Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
本发明涉及到一种半主动压电摩擦阻尼器，主要由管状压电陶瓷驱动器、管状力传感器、上钢板、下钢板、滑动钢板、摩擦片(黄铜或刹车垫)组成。其特征是上钢板、下钢板上开有螺孔，摩擦片与滑动钢板上开有镙孔和滑槽。预紧螺栓通过压电陶瓷驱动器的内孔和力传感器的内孔，将上钢板、下钢板、滑动钢板和摩擦片连接成一整体。此种半主动摩擦阻尼器既具加工方便、性能稳定、耗能能力强等特点，又能够根据工程结构的响应和地震动的信号，通过调节施加给压电陶瓷驱动器的电压，实时地改变滑动摩擦力的大小，具有自适应能力。本发明可通过V型支撑或斜支撑，连接到多高层建筑结构中，具有一定的经济和使用价值，能广泛地应用于土木工程结构消能减震领域。
The invention relates to a semi-active piezoelectric friction damper, mainly composed of a tubular piezoelectric ceramic driver, a tubular force sensor, an upper steel plate, a lower steel plate, a sliding steel plate, and a friction plate (brass or brake pad). It is characterized in that there are screw holes on the upper steel plate and the lower steel plate, and screw holes and slide grooves are opened on the friction plate and the sliding steel plate. The pre-tightening bolt connects the upper steel plate, the lower steel plate, the sliding steel plate and the friction plate as a whole through the inner hole of the piezoelectric ceramic driver and the inner hole of the force sensor. This kind of semi-active friction damper not only has the characteristics of convenient processing, stable performance, and strong energy dissipation capacity, but also can change the sliding friction in real time by adjusting the voltage applied to the piezoelectric ceramic driver according to the response of the engineering structure and the signal of the earthquake. The size of the friction force has the ability of self-adaptation. The invention can be connected to multi-high-rise building structures through V-shaped supports or inclined supports, has certain economic and use values, and can be widely used in the field of energy dissipation and shock absorption of civil engineering structures.
Description
Technical field
The invention belongs to civil engineering structure anti-seismic technology field, relate to the structure of half active piezoelectric friction damper.
Background technology
The effect of earthquake, high wind has constituted serious threat for the safety and the comfortableness of civil engineering structure.How to alleviate the response of engineering structures under dynamic loadings such as earthquake and wind effectively, improving antidetonation, the wind loading rating of structure and combating a natural disaster performance is one of problem anxious to be solved in the civil engineering subject.Traditional antidetonation strategy is that the rigidity, the intensity that rely on structure self is passively resisted the effect that earthquake motion and wind shake, under severe earthquake action, the damage or the destruction that must cause the partial component of structure, so not only uneconomical but also reach not quite to expected effect, and the modern structure vibration control technology is for the rational and effective approach that provides is provided.
The damping technology of passive energy-consumption damper is relatively ripe, yet as a kind of passive control device, it can not be according to purposes, load situation and the response of structure of structure and the structure self characteristics that changes in real time, thereby on using significant limitation is arranged.As be set in slidable friction energy dissipation device under the big shake effect, under little shake effect, but differ and slide surely, so can not play the energy-dissipating and shock-absorbing effect under little shake effect; In contrast, under little shake effect, set the friction energy dissipation device that slides,, cause the damping capacity under the big shake effect not enough because of fixing frictional force is too little.In order to overcome the shortcoming of above-mentioned passive power consumption frcition damper, with piezoelectric ceramic actuator and stable performance, easy to process, energy dissipation capacity is strong, and passive friction energy-dissipating system combines, and regulates the size of force of sliding friction in real time, can greatly improve the effect of energy-dissipating and shock-absorbing.
Summary of the invention
The purpose of this invention is to provide a kind of half active piezoelectric friction damper, to solve the technical deficiency that existing passive frcition damper can not be regulated force of sliding friction in real time according to the intensity of response of structure and earthquake motion with adaptive ability.
Technical scheme of the present invention is as follows:
This kind half be piezoelectric friction damper initiatively, is made up of tubular piezo-electric ceramic driver 3, tubulose power sensor 8, upper steel plate 5, lower steel plate 9, sliding steel plate 7, friction plate 6 (brass or skid).It is characterized in that: have screw 11 and 12,13 on upper steel plate 5, the lower steel plate 9, have Luo hole 14 and chute 15 on friction plate 6 and the sliding steel plate 7.Pretension bolt 2 is connected upper steel plate 5, lower steel plate 9, sliding steel plate 7 and friction plate 6 in aggregates by the endoporus of piezoelectric ceramic actuator 3 and the endoporus of power sensor 8.Can structural element such as the beam on sliding steel plate 7 and top, damper present position, floor 1 be connected by high-strength bolt 4, available support 10 is connected the bean column node of lower steel plate 9 with bottom, damper present position.
Pass to voltage on piezoelectric ceramic actuator 3, all piezoelectric ceramics crystal grain polarised directions are tending towards direction of an electric field, cause the relative displacement at the inner positive and negative charge of piezo ceramic element center, cause the distortion of piezoelectric ceramic actuator 3.The distortion of piezoelectric ceramic actuator 3 is lived in constraint, can produce power.Utilize this electrostriction effect of piezoelectric ceramic actuator 3, change the voltage that imposes on piezoelectric ceramic actuator 3, can change the normal pressure on upper steel plate 5, lower steel plate 9 and sliding steel plate 7 contact surfaces in real time, and then change the size of force of sliding friction, reach the purpose of optimizing energy-dissipating and shock-absorbing.
Effect of the present invention and benefit are the shortcomings that has overcome by dynamic friction, can utilize relative motion and adjustable frictional force of structural element and damper, the enhancement engineering structure is all safeties during uncertain earthquake when suffering amplitude, frequency spectrum and holding, and have the important strategic meaning to guaranteeing the stable and people life property safety when the calamity of country and society.
Description of drawings
Accompanying drawing 1 is the total structure schematic diagram of half active piezoelectric friction damper.
Among the figure: the beam of 1 structure or floor, 2 pretension bolts, 3 piezoelectric ceramic actuators, 4 high-strength bolts, 5 upper steel plates, 6 friction plates, 7 sliding steel plates, 8 power sensors, 9 lower steel plates, 10 connect support.
Accompanying drawing 2 is upper steel plate three-view diagrams.
Among the figure: a elevation, b vertical view, c left view, 11 Luo holes.
Accompanying drawing 3 is lower steel plate three-view diagrams.
Among the figure: d elevation, e vertical view, f left view, 12 Luo holes, 13 Luo holes.
Accompanying drawing 4 is sliding steel plate three-view diagrams.
Among the figure: g elevation, h vertical view, i left view, 14 Luo holes, 15 chutes.(annotate: friction plate and sliding steel plate specification, shape are identical, but material may difference)
The specific embodiment
Be described in detail implementation step of the present invention below in conjunction with technical scheme and accompanying drawing.
During enforcement, at first under little shake and big shake effect, engineering structures is analyzed, and according to the control algolithm that is adopted, determine minimum force of sliding friction and maximum force of sliding friction that half active piezoelectric friction damper will provide respectively, design half is the size and the parameter of piezoelectric friction damper initiatively; Secondly, process required upper steel plate 5, lower steel plate 9, sliding panel 7 and friction plate 6, design or purchase the piezoelectric ceramic actuator 3 and the power sensor 8 that meet design requirement; Once more, the normal pressure of minimum force of sliding friction correspondence as pretightning force, is imposed on piezoelectric ceramic actuator by pretension bolt 2, and each member is formed whole with bolt; At last, structural element such as the beam on sliding steel plate 7 and top, damper present position, plate 1 are connected, the bean column node of lower steel plate 9 with bottom, damper present position are connected with supporting 10 by high-strength bolt 4.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020999 CN1594775A (en) | 2004-07-16 | 2004-07-16 | Semiactive piezoelectric friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020999 CN1594775A (en) | 2004-07-16 | 2004-07-16 | Semiactive piezoelectric friction damper |
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| Publication Number | Publication Date |
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| CN1594775A true CN1594775A (en) | 2005-03-16 |
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| CN 200410020999 Pending CN1594775A (en) | 2004-07-16 | 2004-07-16 | Semiactive piezoelectric friction damper |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153482A (en) * | 2014-09-05 | 2014-11-19 | 大连理工大学 | Frame-shear piezoelectric friction damping device |
| CN105926796A (en) * | 2016-06-21 | 2016-09-07 | 山东大学 | Piezoelectric damping intelligent tuning vibration reduction control device |
| CN107905606A (en) * | 2017-09-26 | 2018-04-13 | 同济大学 | Adjustable friction damper |
| CN108035452A (en) * | 2017-12-18 | 2018-05-15 | 黄淮学院 | A kind of piezoelectricity becomes friction leading type composite shock-absorbing device |
| CN106787941B (en) * | 2016-11-29 | 2018-11-13 | 河南科技大学 | Two step gradient method of dynamic for WSN active piezoelectric energy supply systems |
| CN111021569A (en) * | 2019-12-11 | 2020-04-17 | 中冶建设高新工程技术有限责任公司 | Piezoelectric semi-active friction type assembling steel structure |
| CN111827506A (en) * | 2020-07-29 | 2020-10-27 | 黄淮学院 | A dual piezoelectric semi-active inertial mass damper |
-
2004
- 2004-07-16 CN CN 200410020999 patent/CN1594775A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153482A (en) * | 2014-09-05 | 2014-11-19 | 大连理工大学 | Frame-shear piezoelectric friction damping device |
| CN104153482B (en) * | 2014-09-05 | 2016-07-06 | 大连理工大学 | The shearing piezoelectricity friction damping unit of frame structure |
| CN105926796A (en) * | 2016-06-21 | 2016-09-07 | 山东大学 | Piezoelectric damping intelligent tuning vibration reduction control device |
| CN105926796B (en) * | 2016-06-21 | 2017-10-27 | 山东大学 | Piezo-electric damping intelligent tuning damping control device |
| CN106787941B (en) * | 2016-11-29 | 2018-11-13 | 河南科技大学 | Two step gradient method of dynamic for WSN active piezoelectric energy supply systems |
| CN107905606A (en) * | 2017-09-26 | 2018-04-13 | 同济大学 | Adjustable friction damper |
| CN108035452A (en) * | 2017-12-18 | 2018-05-15 | 黄淮学院 | A kind of piezoelectricity becomes friction leading type composite shock-absorbing device |
| CN108035452B (en) * | 2017-12-18 | 2024-01-30 | 黄淮学院 | Piezoelectric variable friction leading type composite damping device |
| CN111021569A (en) * | 2019-12-11 | 2020-04-17 | 中冶建设高新工程技术有限责任公司 | Piezoelectric semi-active friction type assembling steel structure |
| CN111021569B (en) * | 2019-12-11 | 2024-12-06 | 中冶建设高新工程技术有限责任公司 | A piezoelectric semi-active friction type assembly steel structure |
| CN111827506A (en) * | 2020-07-29 | 2020-10-27 | 黄淮学院 | A dual piezoelectric semi-active inertial mass damper |
| CN111827506B (en) * | 2020-07-29 | 2021-09-21 | 黄淮学院 | Dual-piezoelectric semi-active inerter mass damper |
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