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EP0648906A1 - Amortisseur d'oscillations, notamment pour des bâtiments minces - Google Patents

Amortisseur d'oscillations, notamment pour des bâtiments minces Download PDF

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Publication number
EP0648906A1
EP0648906A1 EP93108971A EP93108971A EP0648906A1 EP 0648906 A1 EP0648906 A1 EP 0648906A1 EP 93108971 A EP93108971 A EP 93108971A EP 93108971 A EP93108971 A EP 93108971A EP 0648906 A1 EP0648906 A1 EP 0648906A1
Authority
EP
European Patent Office
Prior art keywords
vibration damper
liquid
damper according
vibration
containers
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.)
Withdrawn
Application number
EP93108971A
Other languages
German (de)
English (en)
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 Schwingungsdampfer GmbH
Original Assignee
Multicon Schwingungsdampfer GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Multicon Schwingungsdampfer GmbH filed Critical Multicon Schwingungsdampfer GmbH
Priority to EP93108971A priority Critical patent/EP0648906A1/fr
Priority to DE4418916A priority patent/DE4418916A1/de
Publication of EP0648906A1 publication Critical patent/EP0648906A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
    • 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 vibration-prone, in particular slim structures, preferably chimneys, masts, antenna structures and industrial containers, with a container which is filled with a liquid, the mass, sloshing frequency and self-damping behavior of which are matched to the natural frequency of the slim structure to be damped.
  • Such dynamic fluid dampers for slim structures comprise an annular container filled with liquid, preferably with antifreeze, which is arranged at the upper end of the slim structure, for example a chimney.
  • the spring and damper properties of the liquid vibrating with the slim structure are used to produce a damper effect, with only a part of the liquid acting as an additional vibrating mass.
  • the invention is based on the object of further developing the dynamic liquid vibration damper known from the literature in such a way that an effective yet inexpensive vibration damper which can be easily adapted to the individual case results.
  • the solution to this problem by the invention is characterized in that the total mass of the damping liquid is distributed over several partial containers, the respective size, shape and liquid height of which is matched to at least one natural frequency to be damped of the slim structure.
  • the inventive division of the container which previously contained the entire liquid volume into several sub-containers, means that all frequencies that are to be damped can be set.
  • the respective size, shape and liquid level (filling level) make it easy to adapt the respective vibration damper to the respective case with the same basic design. Since the fill level of the liquid in the partial containers can be kept low, the further advantage is achieved with the proposal according to the invention that dead resonating masses can be kept negligibly small, so that the structures to be damped are not unnecessarily loaded with additional weights.
  • the partial containers of the vibration damper according to the invention can have the same size, shape and liquid filling, but can also be designed with different sizes, shapes and liquid filling to adapt to different frequencies to be damped.
  • each partial container has a different damping effect due to its shape in different directions of vibration.
  • the liquid fillings of the partial containers can also at least partially communicate with one another.
  • the partial containers are formed by dividing an overall annular container by means of partition walls. These partitions can run radially. Furthermore, it is possible according to the invention to additionally use horizontal dividing walls for dividing the overall annular container. In order to enable the liquid fillings of the partial containers to communicate, the radial partition walls can be designed to be liquid-permeable.
  • the ring-shaped container which is divided into a plurality of partial containers by dividing walls, can be arranged not only on the outside of the lateral surface of the slim structure, but also inside the lateral surface.
  • the slim structure is shown as a section of a circular cylindrical tube 1.
  • This can be a chimney, a mast, an antenna structure, an industrial container or another structure, the height of which is very large in relation to its base area.
  • the cross section of the slender structure does not have to be circular; this cross-sectional shape was chosen on the drawings only because of the better representation.
  • Such slim structures are particularly susceptible to dynamic, ie unsteady acting wind loads, so that they are often provided with dynamic vibration dampers.
  • the vibration damper shown in its simplest form in FIG. 1 is a liquid damper with an annular container 2, which is arranged directly on the outer surface of the circular cylindrical tube 1 representing the slim structure.
  • This circular container 2 is divided by radially extending partitions 3 into a plurality of partial containers 4, each of which is provided with a liquid filling.
  • Such liquid fillings 5 are shown in FIGS. 2 and 3.
  • two circular containers 2 are arranged one above the other on the lateral surface of the circular cylindrical tube 1.
  • annular container instead of two separate annular containers 2, which, in addition to the radial partition walls 3, is subdivided into partial containers 4 lying one above the other by horizontally extending partition walls.
  • the annular container 2 is arranged on the inside of the circular cylindrical tube 1 symbolizing the slim structure.
  • This circular cylindrical tube 1 represents, for example, the outer support pipe of a chimney, which is provided with an exhaust gas-carrying inner pipe 6, which carries insulation 7 on its outer surface and is provided with a cover 8, which covers the annular space between insulation 7 and outer support pipe 1.
  • the total mass of the liquid acting as a vibration-damping additional mass is distributed to the sub-containers 4, which have a high sloshing frequency due to their smaller dimensions and low filling level, so that a high damping effect with negligibly small dead resonating mass results.
  • the self-damping behavior of the partial containers 4 depends not only on their absolute size, the mass of the liquid filling 5 and the respective liquid level, but also on the shape of the partial containers 4 and their position in relation to the direction of vibration. By varying these parameters, in particular the size and shape of the partial containers 4 and the type and amount of the liquid filling 5, the vibration damper can be tuned in a particularly effective manner to at least one natural frequency of the slim structure to be damped.
  • the annular container 2 arranged on the outer lateral surface of the circular cylindrical tube 1 is provided with a plurality of partial containers 4 of different sizes.
  • the different sizes of the partial containers 4 are achieved by additional partition walls 9 running tangentially between some radial partition walls 3.
  • the vibration damper shown as an exemplary embodiment is a so-called broadband damper, the damping effect of which can be different in different directions of vibration, for example due to different liquid fillings 5.
  • the partial containers 4 are each formed by circular-cylindrical containers which are arranged in a ring on the outside of the circular-cylindrical tube 1 symbolizing the slender structure.
  • different damping effects in different directions of oscillation of the circular cylindrical tube 1 can be achieved by different liquid fillings.
  • the embodiment according to FIG. 6 finally shows that the partial containers 4 do not necessarily have to form a closed circular ring.
  • the illustration shows that the partial containers 4 arranged on the outer lateral surface of the circular cylindrical tube 1 can be interrupted in order to enable a conductor 10 to be passed through.

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)
EP93108971A 1993-06-04 1993-06-04 Amortisseur d'oscillations, notamment pour des bâtiments minces Withdrawn EP0648906A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP93108971A EP0648906A1 (fr) 1993-06-04 1993-06-04 Amortisseur d'oscillations, notamment pour des bâtiments minces
DE4418916A DE4418916A1 (de) 1993-06-04 1994-05-31 Schwingungsdämpfer für schwingungsgefährdete Bauwerke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93108971A EP0648906A1 (fr) 1993-06-04 1993-06-04 Amortisseur d'oscillations, notamment pour des bâtiments minces

Publications (1)

Publication Number Publication Date
EP0648906A1 true EP0648906A1 (fr) 1995-04-19

Family

ID=8212966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108971A Withdrawn EP0648906A1 (fr) 1993-06-04 1993-06-04 Amortisseur d'oscillations, notamment pour des bâtiments minces

Country Status (2)

Country Link
EP (1) EP0648906A1 (fr)
DE (1) DE4418916A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6695588B1 (en) 1999-06-16 2004-02-24 Neg Micon A/S Damping of oscillations in wind turbines
CN110630680A (zh) * 2018-06-28 2019-12-31 北京金风科创风电设备有限公司 阻尼器以及具有该阻尼器的承载围护结构
US11415109B2 (en) 2018-06-28 2022-08-16 Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. Damper and load-bearing enclosure structure having same
CN117360970A (zh) * 2023-10-13 2024-01-09 山东电力工程咨询院有限公司 高位储仓地震下的减震装置及减震方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162614A1 (de) * 2001-12-20 2003-07-10 Spannverbund Ges Fuer Verbundt Verfahren und Vorrichtung zum Dämpfen der Schwingungen hoher, schlanker Gebäude

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174589A (en) * 1960-05-06 1965-03-23 Sulzer Ag Slender structure
DE1275759B (de) * 1961-02-24 1968-08-22 Sulzer Ag Daempfer fuer zu transversalen Schwingungen neigende Kamine
US4951441A (en) * 1987-12-01 1990-08-28 Mitshi Kensetsu Kabushiki Kaisha Damping device in a structure and damping construction and damping method using those devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174589A (en) * 1960-05-06 1965-03-23 Sulzer Ag Slender structure
DE1275759B (de) * 1961-02-24 1968-08-22 Sulzer Ag Daempfer fuer zu transversalen Schwingungen neigende Kamine
US4951441A (en) * 1987-12-01 1990-08-28 Mitshi Kensetsu Kabushiki Kaisha Damping device in a structure and damping construction and damping method using those devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6695588B1 (en) 1999-06-16 2004-02-24 Neg Micon A/S Damping of oscillations in wind turbines
CN110630680A (zh) * 2018-06-28 2019-12-31 北京金风科创风电设备有限公司 阻尼器以及具有该阻尼器的承载围护结构
US11415109B2 (en) 2018-06-28 2022-08-16 Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. Damper and load-bearing enclosure structure having same
CN117360970A (zh) * 2023-10-13 2024-01-09 山东电力工程咨询院有限公司 高位储仓地震下的减震装置及减震方法

Also Published As

Publication number Publication date
DE4418916A1 (de) 1994-12-08

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