CN1060326A - Hydraulic-mass vibration control system - Google Patents
Hydraulic-mass vibration control system Download PDFInfo
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- CN1060326A CN1060326A CN 90107765 CN90107765A CN1060326A CN 1060326 A CN1060326 A CN 1060326A CN 90107765 CN90107765 CN 90107765 CN 90107765 A CN90107765 A CN 90107765A CN 1060326 A CN1060326 A CN 1060326A
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- Prior art keywords
- mass
- control system
- vibration control
- fluid cylinder
- hydraulic
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- Vibration Prevention Devices (AREA)
Abstract
A kind of hydraulic-mass vibration control system.This system construction is simple, use is flexible, and it can reduce structural vibrations energy 50～60% effectively, thereby construction cost is reduced significantly.
Description
The present invention is the engineering structures vibration control technology
Earthquake is one of main in the world natural calamity, it is to the destruction of building and to be directed at people's the life and the loss of property be very surprising, therefore in the present architectural design the influence of earthquake to building, take into account as one of major influence factors, thereby construction cost is significantly improved.
In order to improve the shock resistance of building, reduce construction costs simultaneously, various structural vibration control technology are operated and are given birth to.So far, in the structural vibration control technical field,, now mainly contain substrate vibration isolation, damping vibration attenuation and absorbing etc. except by the ACTIVE CONTROL method of outside resources to controlled object input energy.
Vibration isolation system mainly is provided with the vibration isolation energy dissipator between structural base and base surface.This method reduces the rigidity of structure, and is unfavorable to wind resistance, can make structure produce expendable permanent displacement in addition and reverses, so this method is effective to short rigid structures, inapplicable to highrise building, tall and slender structure.
The damping energy dissipation damping system needs to install the parts that several power consumption materials are made on structure or equipment.When structural vibration, these parts produce very large plastometric set dissipation energy.This damping system is existing the application on engineering, but to doting on big building a large amount of this power consumption parts need be installed, and construction cost is improved significantly.
Accompanying drawing 1 is a shock absorption system.As shown in the figure, M is that mass, k are that spring, C are that damper, S are structure in this system; When structure S vibrated, mass also produced vibration, was about to a part of vibrational energy and was transferred to mass, caused structural vibration to reduce.This system, it is very limited that relatively large works is reduced to vibrate, and mainly reduces the vibration of structural top, it needs bigger mass, because mass needs at the top of structure, this is difficult to realize in actual engineering, has limited in application in engineering.
Purpose of the present invention designs a kind of hydraulic pressure-mass vibration control system, to overcome all deficiencies of above-mentioned various damping systems.
Basic principle of the present invention is that the structural vibration energy is transferred to liquid and mass.According to design, native system mainly comprises mass, hydraulic cylinder, fluid pipeline, can be located at the bottom of structure owing to mass in the native system.Therefore make native system possess very big flexibility, become a reality thereby it is used in engineering.
Provide implementation detail of the present invention below in conjunction with accompanying drawing.
Accompanying drawing 2 is hydraulic pressure-mass vibration control system.
As shown in the figure, 1. be the represented arbitrary structure of single-store frame.2. coupled piston is just oppressed the liquid of hydraulic cylinder in 3. and is 4. moved along pipeline when 1. structure is vibrated, and liquid enters fluid cylinder and 5. promotes piston 6. in the back; 7. move and make with mass that 6. piston links to each other.When structure 1. during double vibrations, then ducted liquid and mass cause the structural vibration energy to pass to liquid and mass, thereby structural vibration are reduced along with double vibrations.
The vibration equation of the hydraulic pressure-quality control system shown in the accompanying drawing 2 can be written as:
（M+α2m+αβMo）
+（Cs+α2C）
+KX
=-（M-αm2-αMo）
g（t）
In the formula:
M-structure quality 1.
M
oThe quality of-mass
C
SThe damped coefficient of-structure.
The stiffness factor of K-structure.
Liquid quality in the m-pipeline.
m
2Liquid quality in the-horizontal pipe.
α-fluid cylinder is the 4. ratio of cross-sectional area of cross-sectional area and pipeline 3..
β-fluid cylinder is the ratio of cross-sectional area and fluid cylinder cross-sectional area 5. 3..
The damping of C-liquid pipeline system.
ü g(t)-ground movement acceleration.
By this equation obviously as seen, mass of system increases, damping increases, the cycle increases, outer perturbed force reduces, therefore the structural vibration meeting obviously reduces, and wherein α and beta coefficient all are designed to the coefficient greater than 1, and α, β are bigger, the degree that structural vibration reduces is also bigger, as seen, can make the equation right-hand vector in theory is zero from equation, even:
M＝αm
2+αM
0
In this case, the perturbed force of equation right-hand member is zero.Then structure is not vibrated.This just means that we can artificially design α, β and M
0, and structural vibration is alleviated greatly.
Simple structure of the present invention, flexible for installation can place arbitrary position of structure.
Implement the present invention and can make structural vibrations energy reduction by 50～60% be equivalent to reduce earthquake intensity 1 degree, thereby construction cost is reduced significantly.
Claims (4)
1, a kind of hydraulic pressure--mass vibration control system, it comprise fluid cylinder 3., fluid cylinder 5., fluid pipeline 4. with mass 7., it is characterized in that 4. 5. 3. fluid cylinder be cascaded by pipeline with fluid cylinder.
2, hydraulic pressure-mass vibration control system according to claim 1 is characterized in that 1. 2. fluid cylinder piston 3. link with structure, and 7. 6. fluid cylinder piston 5. link with mass.
3, hydraulic pressure-mass vibration control system according to claim 1, it is characterized in that the ratio α of said fluid cylinder cross-sectional area 3. and pipeline cross-sectional area 4. and fluid cylinder 3. cross-sectional area and the ratio β of fluid cylinder cross-sectional area 5. all be greater than 1.
4, as hydraulic pressure-mass vibration control system as described in the claim 1,2, it is characterized in that 7. said mass can place the bottom of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107765 CN1060326A (en) | 1990-09-25 | 1990-09-25 | Hydraulic-mass vibration control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107765 CN1060326A (en) | 1990-09-25 | 1990-09-25 | Hydraulic-mass vibration control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1060326A true CN1060326A (en) | 1992-04-15 |
Family
ID=4880708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90107765 Pending CN1060326A (en) | 1990-09-25 | 1990-09-25 | Hydraulic-mass vibration control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060326A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975200A (en) * | 2010-10-19 | 2011-02-16 | 江苏大学 | Hydraulic inert container device |
| CN102352870A (en) * | 2011-09-30 | 2012-02-15 | 江苏大学 | Adjustable-hydraulic-type energy accumulator for vehicles |
-
1990
- 1990-09-25 CN CN 90107765 patent/CN1060326A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975200A (en) * | 2010-10-19 | 2011-02-16 | 江苏大学 | Hydraulic inert container device |
| CN101975200B (en) * | 2010-10-19 | 2013-04-17 | 江苏大学 | Hydraulic inert container device |
| CN102352870A (en) * | 2011-09-30 | 2012-02-15 | 江苏大学 | Adjustable-hydraulic-type energy accumulator for vehicles |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |