EP0686733B2 - Amortisseur de vibrations pour éléments de construction et constructions mis en danger de vibrations - Google Patents

Amortisseur de vibrations pour éléments de construction et constructions mis en danger de vibrations Download PDF

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Publication number
EP0686733B2
EP0686733B2 EP95105685A EP95105685A EP0686733B2 EP 0686733 B2 EP0686733 B2 EP 0686733B2 EP 95105685 A EP95105685 A EP 95105685A EP 95105685 A EP95105685 A EP 95105685A EP 0686733 B2 EP0686733 B2 EP 0686733B2
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EP
European Patent Office
Prior art keywords
tank
vibration
vibration absorber
tanks
liquid surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95105685A
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German (de)
English (en)
Other versions
EP0686733B1 (fr
EP0686733A1 (fr
Inventor
Hans Prof. Dr.-Ing. Ruscheweyh
Constantin Dipl.-Ing. Verwiebe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MULTICON SCHWINGUNGSDAEMPFER UND PLANUNG GMBH
Original Assignee
Multicon Schwingungsdampfer und Planung GmbH
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Publication date
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Priority claimed from DE4418916A external-priority patent/DE4418916A1/de
Application filed by Multicon Schwingungsdampfer und Planung GmbH filed Critical Multicon Schwingungsdampfer und Planung GmbH
Publication of EP0686733A1 publication Critical patent/EP0686733A1/fr
Publication of EP0686733B1 publication Critical patent/EP0686733B1/fr
Application granted granted Critical
Publication of EP0686733B2 publication Critical patent/EP0686733B2/fr
Anticipated expiration legal-status Critical
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems

Definitions

  • the invention relates to a vibration damper for components and structures at risk of vibration, preferably chimneys, masts, antenna structures and industrial containers with a quasi-rotalion symmetrical Vibration behavior, from at least a container filled with a liquid, the Mass, sloshing frequency and self-damping behavior to a natural frequency of the vibration-prone structure are coordinated.
  • vibration dampers belonging to the category include the dynamic vibration damper.
  • Such vibration dampers consist of a arranged to vibrate on the main mass of the structure Additional mass via an attenuator is connected to the main mass.
  • the embodiments distinguish this dynamic vibration damper very different from each other.
  • the spring and damper properties the one vibrating with the structure Liquid is used to create a damper effect exploited, the mass, the sloshing frequency and the self-damping behavior of the liquid a natural frequency of the vibration-prone to be damped Building can be coordinated.
  • Such a vibration damper at the beginning described is from US-A-4 951 441 known. It uses at least one rectangular one Container, the frequency tuning of the in the container liquid in the direction of the longer side of the container he follows. Such vibration dampers are effective only in one direction of vibration. Should slim structures with a quasi-rotationally symmetrical Vibration behavior, such as Steamed chimneys, masts and antenna structures is a variety of such rectangular containers with a correspondingly diverse orientation required, with which the design effort and the space requirement enlarge so that the known vibration damper for particularly slim structures can no longer be used.
  • the invention has for its object to develop vibration damper of the type described in such a way that a structurally simple and effective and easy to adapt to the individual case results in vibration damper that can be used for slim components and structures.
  • Vibration damper created, its damping effect in all horizontal directions of vibration of the component or building in the same way and only because the liquid mass in the container occurs, so that an extremely small design and results in a correspondingly low weight of the damper, with which in particular its use in the chimney and Antenna construction becomes possible.
  • the container according to the invention with circular Container base or formed as an annular container be the by approximately radially extending partitions is divided.
  • the container can according to one another feature of the invention but also with a by an equilateral triangle, a square or a Polygon with the same long sides of the container base be trained.
  • These quasi-radial-symmetrical Containers become the reflection properties exploited the liquid wave. Arise in this case perpendicular to the wall outgoing wave fronts that extend along the bisector cross the neighboring container walls, so that a damping effect in this case too in the respective direction of vibration.
  • a preferred one Implementation of the invention will be such Containers with their diagonals in the main vibration direction of the component or structure.
  • the level of the liquid in the Containers smaller than the distance of each liquid surface delimiting container wall from the center the liquid surface, preferably be less than half this distance. hereby is achieved that almost the entire mass of Liquid to dampen vibrations is used and the components to be damped or structures not unnecessarily loaded with additional weights become.
  • the side walls of the container according to the invention can either be perpendicular to the container base run; but they can also slant inwards be inclined to when hitting the vibrations emerging waves a reflection of this To cause waves towards the bottom of the container.
  • FIG. 1 to 3 show a container with a square Base area G, from which the container walls W extend vertically upwards.
  • the container height H is indicated to the right of the container in Fig. 1.
  • the container is filled with a liquid F, the Level h is also shown in Fig. 1; it is significant smaller than the container height H. Also the liquid surface O is shown in Fig. 1.
  • Fig. 2 is the center M of the liquid surface O to recognize. From this center M has each container wall delimiting the liquid surface O W on the in the plane of the liquid surface O extending perpendicular (i.e. the vertical to section line S of the plane of the liquid surface O with the corresponding container wall W) same distance A. These distances A are in the Top view drawn in Fig. 2.
  • the second embodiment according to the 5 and 6 is also with a square Base designed containers with container walls W, which are inclined obliquely inwards.
  • the distance A results in each Liquid surface O delimiting container wall W between the center M of the liquid surface O and that in the plane of the liquid surface O perpendicular bisector of section line S of Level of the liquid surface O with the corresponding one Container wall W.
  • each the container wall delimiting the liquid surface O W from the center M of the liquid surface O is approximately the same size, there is a quasi-rotationally symmetrical Vibration behavior of the liquid F.
  • Fig. 4 it is shown that there is a container with a square base G between each opposite container walls W extending Form shafts a and b when the container is in swings diagonally. This direction of vibration is indicated with a double arrow in Fig. 4.
  • the waves running to the opposite wall a and b intersect in the area of the bisector between the neighboring ones, each the wave a or b initiating container walls W. It results itself with the square despite the design of the container Base area G is a quasi-rotationally symmetrical Vibration behavior because of the interference which causes waves a and b to be more damped than with an arrangement of the container with parallel or perpendicular to the main vibration direction aligned container walls W.
  • a slim structure B as a section of a circular cylindrical tube shown. It can be this around a chimney, a mast, an antenna structure, an industrial container or other structure or component, its height in relation to its footprint is very large and that is at risk of vibration is.
  • the cross section of the slim Building B need not be circular; this Cross-sectional shape was only on the drawings chosen because of the better representation.
  • Such slim structures B are particularly vulnerable dynamic, i.e. unsteady wind loads.
  • This pipe represents, for example the outside support pipe of a chimney is provided with an exhaust pipe inner tube I.
  • an insulation i carries and is provided with a cover C, which the Annulus between insulation i and outer support tube B covers.
  • 14 and 15 is the total mass as the vibration damping Additional mass liquid F distributed to the sub-containers because of their small dimensions and low filling level a high one Sloshing frequency, so that there is a high damping effect with negligibly small dead resonating Mass results.
  • the self-damping behavior the individual container does not just depend on it absolute size, the mass of the liquid F and the respective liquid level, but also from their Position from the direction of vibration. Through a variation this parameter, especially the size and shape of the individual containers and the type and amount of liquid F these vibration dampers can be particularly special effective way in at least one to be damped Adjust the natural frequency of the slim building B.
  • 16 is in the embodiment a plurality of circular cylindrical containers ring-shaped on the outside of the slim structure B symbolizing circular cylindrical tube arranged.
  • different liquid fillings can be used a different damping effect in different directions of vibration of the Building B can be reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Claims (11)

  1. Amortisseur d'oscillations destiné à des éléments de construction ou des ouvrages élancés exposés à un risque d'oscillations, par exemple des cheminées, des mâts, des structures de support d'antennes et des réservoirs industriels ayant un comportement d'oscillations de révolution quasi symétrique, constitué de réservoirs contenant un liquide, qui sont disposés de façon annulaire sur l'ouvrage dans une disposition avec symétrie radiale ou avec quasi symétrie radiale et dont les masses, la fréquence de ballottement et le comportement d'amortissement propre sont adaptés à une fréquence propre à amortir de l'ouvrage exposé à un risque d'oscillations,
          caractérisé en ce que, pour chacun des récipients, l'écartement (A) entre chaque paroi (W) de réservoir délimitant la surface (O) du liquide et le centre (M) de la surface (O) du liquide est sensiblement identique sur la perpendiculaire, s'étendant dans le plan de la surface (O) du liquide, à la ligne de coupe (S) du plan de la surface (O) du liquide contenant la paroi (W) correspondante de réservoir et en ce que les récipients sont disposés extérieurement sur ou à l'intérieur de la surface d'enveloppe de l'élément de construction ou de l'ouvrage élancé (B).
  2. Amortisseur d'oscillations selon la revendication 1, caractérisé en ce que le niveau de remplissage (h) du liquide dans les réservoirs est inférieur à l'écartement (A) de chaque paroi (W) de réservoir délimitant la surface (O) du liquide par rapport au centre (M) de la surface (O) du liquide.
  3. Amortisseur d'oscillations selon la revendication 2, caractérisé en ce que le niveau de remplissage (h) du liquide (F) dans les réservoirs est inférieur à la moitié de l'écartement (A) de chaque paroi (W) de réservoir délimitant la surface (O) du liquide par rapport au centre (M) de la surface (O) du liquide.
  4. Amortisseur d'oscillations selon la revendication 1, caractérisé en ce que les réservoirs sont réalisés avec une surface de base (G) circulaire.
  5. Amortisseur d'oscillations selon l'une au moins des revendications 1 à 3, comportant plusieurs réservoirs ayant sensiblement la même forme et la même taille, caractérisé en ce que les réservoirs sont formés par subdivision d'un réservoir (R), qui est globalement annulaire, au moyen de cloisons de séparation (T) s'étendant pour l'essentiel radialement.
  6. Amortisseur d'oscillations selon la revendication 5, caractérisé en ce que le réservoir annulaire (R) est disposé extérieurement sur la surface d'enveloppe de l'élément de construction ou de l'ouvrage élancé (B).
  7. Amortisseur d'oscillations selon la revendication 5, caractérisé en ce que le réservoir annulaire (R) est disposé à l'intérieur de la surface d'enveloppe de l'élément de construction ou de l'ouvrage élancé (B).
  8. Amortisseur d'oscillations selon la revendication 1, caractérisé en ce que les réservoirs sont réalisés avec une surface de base (G) formée par un triangle équilatéral, un carré ou un polygone à côtés égaux.
  9. Amortisseur d'oscillations selon la revendication 8, caractérisé en ce que les réservoirs sont orientés par leurs diagonales dans la direction d'oscillation principale de l'élément de construction ou de l'ouvrage (B).
  10. Amortisseur d'oscillations selon l'une des revendications précédentes, caractérisé en ce que les parois (W) de réservoir s'étendent sensiblement à angle droit par rapport à la surface de base (G).
  11. Amortisseur d'oscillations selon l'une au moins des revendications 1 à 9, caractérisé en ce que les parois (W) de réservoir s'étendent en étant inclinées obliquement vers l'intérieur.
EP95105685A 1994-05-31 1995-04-14 Amortisseur de vibrations pour éléments de construction et constructions mis en danger de vibrations Expired - Lifetime EP0686733B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4418916 1994-05-31
DE4418916A DE4418916A1 (de) 1993-06-04 1994-05-31 Schwingungsdämpfer für schwingungsgefährdete Bauwerke

Publications (3)

Publication Number Publication Date
EP0686733A1 EP0686733A1 (fr) 1995-12-13
EP0686733B1 EP0686733B1 (fr) 1999-06-16
EP0686733B2 true EP0686733B2 (fr) 2003-02-26

Family

ID=6519377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105685A Expired - Lifetime EP0686733B2 (fr) 1994-05-31 1995-04-14 Amortisseur de vibrations pour éléments de construction et constructions mis en danger de vibrations

Country Status (3)

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EP (1) EP0686733B2 (fr)
AT (1) ATE181389T1 (fr)
DK (1) DK0686733T4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008153489A1 (fr) * 2007-06-11 2008-12-18 Vertical Wind Ab Ensemble d'éolienne, pylône de support pour cet ensemble et utilisation de l'éolienne
DE102014113145A1 (de) 2014-09-11 2016-03-17 Hochschule Wismar Lärmschutzwand
WO2023025780A1 (fr) 2021-08-24 2023-03-02 Hochschule Wismar Amortisseur liquide pour l'annulation et l'amortissement des vibrations sur des constructions

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU772084B2 (en) 1999-06-16 2004-04-08 Vestas Wind Systems A/S Damping of oscillations in wind turbines
US7220104B2 (en) * 2004-12-30 2007-05-22 General Electric Company Vibration reduction system for a wind turbine
DK2899397T3 (en) * 2014-01-28 2017-04-10 Siemens Ag Attenuator of a wind turbine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783937A (en) † 1986-08-06 1988-11-15 Shimizu Construction Co., Ltd. Device for suppressing vibration of structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3640479A1 (de) * 1986-11-27 1988-06-09 Erich Goergens Einstellvorrichtung fuer schlanke bauwerksstrukturen
NL8603259A (nl) * 1986-12-22 1988-07-18 Lenten Hendrik Vloeistofbuffer ter beveiliging van gebouwen tegen aardbevingen.
DD293164A5 (de) * 1990-03-29 1991-08-22 Bauakademie,Inst. F. Heizung, Lueftung U. Grundlagen D. Bautechnik,De Schwingungstilger zur verminderung von schwingungen an bauwerken

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783937A (en) † 1986-08-06 1988-11-15 Shimizu Construction Co., Ltd. Device for suppressing vibration of structure

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
K. Fujii, Y. Tamura, T. Wakahara: "Wind-induced Vibration of Tower and Practical Applications of Tuned Sloshing Damper", Journal of Wind Engineering, No. 37, October 1988. †
T. Miyata, H. Yamada, Y. Saitoh. "Feasibility Study on Damping of Wind-induced Vibrations of Structure By. Breaking of Sloshing Water" Journal of Wind Engineering No. 32, May 1987 (in Japanese) †

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008153489A1 (fr) * 2007-06-11 2008-12-18 Vertical Wind Ab Ensemble d'éolienne, pylône de support pour cet ensemble et utilisation de l'éolienne
DE102014113145A1 (de) 2014-09-11 2016-03-17 Hochschule Wismar Lärmschutzwand
WO2016037958A1 (fr) 2014-09-11 2016-03-17 Hochschule Wismar Dispositif servant à absorber et amortir les vibrations sur des ouvrages
WO2023025780A1 (fr) 2021-08-24 2023-03-02 Hochschule Wismar Amortisseur liquide pour l'annulation et l'amortissement des vibrations sur des constructions
DE102021121874A1 (de) 2021-08-24 2023-03-02 Hochschule Wismar Flüssigkeitstilger zum Tilgen und Dämpfen von Schwingungen an Bauwerken

Also Published As

Publication number Publication date
EP0686733B1 (fr) 1999-06-16
EP0686733A1 (fr) 1995-12-13
DK0686733T3 (da) 2000-01-17
DK0686733T4 (da) 2003-06-23
ATE181389T1 (de) 1999-07-15

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