EP1815068B1 - Vorrichtung zur dämpfung von schwingungsbewegungen bei einem bauwerk - Google Patents

Vorrichtung zur dämpfung von schwingungsbewegungen bei einem bauwerk Download PDF

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Publication number
EP1815068B1
EP1815068B1 EP05795034.7A EP05795034A EP1815068B1 EP 1815068 B1 EP1815068 B1 EP 1815068B1 EP 05795034 A EP05795034 A EP 05795034A EP 1815068 B1 EP1815068 B1 EP 1815068B1
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EP
European Patent Office
Prior art keywords
mechanical
control surface
building
absorber
vibrations
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.)
Active
Application number
EP05795034.7A
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German (de)
English (en)
French (fr)
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EP1815068A1 (de
Inventor
Uwe Starossek
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.)
Soletanche Freyssinet SA
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Soletanche Freyssinet SA
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Publication of EP1815068A1 publication Critical patent/EP1815068A1/de
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed bridges
    • E01D11/02—Suspension bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges

Definitions

  • the invention relates to a device for damping oscillatory movements in a building, in particular in a bridge.
  • Structural stabilization refers to structural measures, such as increasing the torsional rigidity of the beam or adding additional stay cables.
  • passive vibration dampers passively swinging additional masses come into consideration, which are referred to as absorber.
  • the active vibration dampers can be divided into active mechanical and active aerodynamic vibration dampers.
  • the latter are based on the approach of suitably modifying the flow field forming the bridge carrier so as to achieve a stabilizing effect.
  • the active mechanical flutter control for example, the torsional vibration of the bridge girder is checked by an additionally applied torsional moment.
  • the additional torsional moment is generated by horizontally displaceable damper masses in the bridge girder.
  • the aforementioned devices have, inter alia, the disadvantage of a relatively large energy requirement and thereby reduced reliability.
  • the invention has for its object to provide a device for damping vibrations in construction and structures that suppresses externally induced vibrations at high reliability with simple means and the lowest possible use of power-energy and the critical wind speed for self-induced vibrations (eg flutter) effectively elevated. Both torsional vibrations and vibrations in certain directions should be suppressed.
  • the device according to the invention serves to damp vibrations in structures. It has at least one aerodynamic control surface which is rotatably and / or displaceably mounted on the building. Furthermore, at least one mechanical absorber is provided, which is kinematically coupled to the control surface is.
  • the device according to the invention also referred to as an aeroelastic absorber, serves to damp vibrations in structures. It has at least one aerodynamic control surface lying in the wind, rotatable and / or displaceably mounted, which can be designed as a control sign, movable edge or wing element, wherein the control surface with the mechanical absorber is positively kinematically coupled.
  • the forcibly kinematic coupling is preferably effected by movable mechanical elements, such as gear lever or transmission gear.
  • the mechanical absorber has a spring member which applies a restoring force to a predetermined position on the mechanical lifter.
  • the mechanical absorber is a vibratory secondary system that has a favorable influence on the vibration behavior of the structure (main system). Furthermore, the mechanical absorber is provided with at least one mass body.
  • the device according to the invention thus has no drive which makes an external power supply necessary.
  • the mechanical absorber in addition to the wing element on a damper element.
  • the mechanical absorber is connected with its comparatively small mass via the spring element and via the damper element with the building, in particular with its supporting structure. Its degree of freedom of movement is the rotation about a fixed pole relative to the structure or the displacement relative to the structure in a given direction.
  • the absorber effect is due to the inertial forces of the mass and the damping forces in the possibly added damper element.
  • Mechanical absorbers themselves have long been known.
  • the flow forces acting on the aerodynamic control surface can also act on the vibration of the mechanical absorber via the existing positive connection.
  • this influence is not required for the effectiveness of the device and, if disruptive, can be minimized by suitable storage of the control surface or otherwise.
  • the coupling between the mechanical absorber and the control surface can be made such that amplitude, phase and / or frequency relationships between a vibrational movement of the mechanical absorber and the oscillatory motion of the aerodynamic control surface can be adjusted.
  • the tuning can thus be adapted to changing operating conditions, such as a variable wind speed.
  • a controller may be provided which controls the amplitude, phase and / or frequency ratios accordingly.
  • the aerodynamic control surface can be formed as a movable edge or wing element, which connects directly to the building and is mounted rotatably about a stationary point relative to the building.
  • the aerodynamic control surface can be formed as a detached from the building sign, which is rotatably connected via pylons and / or slidably connected to the building.
  • the movement of the shield can also be performed so that a rotation about a, relative to the building, not fixed point occurs.
  • the aerodynamic control surface is designed as a wing element which protrudes freely from the structure with a section.
  • the wing element with its mass arranged on both sides of the bearing point forms the mechanical absorber in interaction with a spring between the wing element and the structure.
  • the wing element is formed with an arm which projects into the building and is connected there by means of a spring to the building. Wing element, arm and spring together form the mechanical absorber.
  • the arm of the wing element has a mass body at its end.
  • At least two aeroelastic absorbers are arranged in pairs on opposite sides of an axis, both Torsionsschwingungen around the axis as well as vibrations in certain directions to be damped or eradicated.
  • the attachment points are preferably distributed spatially in the building or structure.
  • Fig. 1 shows a bridge girder 10 in the cutout, as used in suspension bridges.
  • the stiffening beam 12 is held by hanger 14 at between the masts of the bridge tensioned ropes 16.
  • On the stiffening carrier 12 are rotatably mounted on both sides wings elements connected.
  • Fig. 2 shows the body of the bridge girder 12 in cross section.
  • the longitudinal axis of the bridge girder is marked with 18.
  • On the side of the bridge girder are two wing elements 20, 22 which are each pivotally mounted in a bearing point 24, 26 and form the aerodynamic control surfaces.
  • On its inside, in the bridge girder 12, the wing elements 20, 22 have arms 28, 30, at the ends of which in each case a mass body 32, 34 is provided.
  • Each arm 28 or 30 is connected via a spring element 36 or 40 and a damper element 38 or 42 to the bridge girder 12.
  • Wing elements 20, 22 and mass bodies 32, 34 and springs 36, 40 are each arranged so that the wing elements 20, 22 remain in a predetermined position without external force influence. A deflection of the wing elements from their rest position leads to a vibration which damps the movement of the bridge girder 12.
  • Fig. 2 consists of the mechanical absorber of several respectively involved masses (mass body 32 and 34, arm 28 and 30, wing member 20 and 22), a spring 36 and 40 and a damper element 38 and 42. Its degree of freedom of movement is the rotation to the bearing point 24 and 26, respectively. It is excited to vibrate by vertical and torsional vibrations of the bridge girder. The vibration excitation of the absorber and thus its effectiveness generally require an imbalance of the mass distribution and thus a bias of the spring 36 or 40 in the static rest position.
  • the mass of the wing elements should be as small as possible in the interest of great effectiveness of the mechanical absorber.
  • the zwang furnishede kinematic coupling between the mechanical absorber and aerodynamic control surface consists in this embodiment simply from the two elements connecting arm 28 and 30th
  • the absorber effect of the mechanical absorber is due to the inertial forces of the masses involved and the damping forces in the damper element.
  • the rotation of the mechanical absorber (relative to the bridge) is transferred to the aerodynamic control surface 20 or 22, which lies in the wind current and is rotatably mounted, which is assigned to the respective mechanical absorber.
  • the flow field is changed dynamically and additionally induced time-varying air forces.
  • the mechanical absorber according to the invention can also oscillate in a predetermined straight direction and, instead of the lever rigidly connected to the aerodynamic control surface, can also have other positive connections, such as transmission levers and gearboxes.
  • the tuning of the aeroelastic damper is done by the choice of mass m, spring constant k and damping constant c as the central mechanical characteristics, the choice of the distance of the mechanical absorber of the bridge axis, the choice of its degree of freedom of movement, the kinematics of the positive kinematic connections and the contour and the mass of the aerodynamic control surfaces.
  • the main effect of the aeroelastic damper is to direct the flow of air on the building by a swinging movement of the aerodynamic control surface in such a way that a rocking-up is prevented and the building is stabilized.
  • Simultaneously with the control of the flow forces by the movement of the absorber can on the aerodynamic control surface acting flow forces on the existing zwang dormitore connection also act back on the vibration of the mechanical absorber.
  • this influence can have a supporting or disturbing effect.
  • this reaction can be suppressed to the mechanical absorber.
  • FIG Fig. 3 An embodiment in which this reaction is suppressed by the storage of the control surface is shown in FIG Fig. 3 shown.
  • the aerodynamic control surface of a remote from the building connected to the building by a holding device 46 plate 44.
  • the shield is rotatably mounted about a bearing point 48 in the central region of the shield.
  • the zwang consequently kinematic coupling with the interior of the bridge carrier located mechanical absorber 60 via a movable link member 50 which is selectively coupled via a link member 52 or 56 with the shield 44.
  • the aeroelastic absorber can be provided on one or both sides (relative to the bridge longitudinal axis). With bilateral arrangement, both absorbers can also be coupled or operated independently of each other. The latter case is in Fig. 2 shown. If both absorbers are coupled (not shown), then a corresponding positive kinematic connection must be provided between the two absorbers. If, on the other hand, both absorbers are independent of each other, it is possible to lock them on one side, eg leeward.
  • a zwang conspiracye kinematic coupling between mechanical absorber and aerodynamic control surface which allows frequency ratios between the vibration of the mechanical absorber and the Adjust the oscillation of the aerodynamic control surface.
  • the amplitude ratio can be in the case of a translation linkage z. B. by moving the connection points of the linkage members, as in Fig. 3 shown or similar.
  • a hinge 58 is fixedly connected to the first link member 52 and locked within a slot 54 in the second link member 50. The adjustment can thus be made steplessly by moving the swivel joint 58 in the slot 54.
  • the amplitude ratio can be stepped or continuously adjusted with a corresponding manual or continuously variable transmission.
  • the preferred embodiment of the invention has been described in the context of a bridge but is by no means limited to bridges in its use. Rather, the device according to the invention can also be used for horizontal vibrations, as they occur, for example, in towers. Here, the axis 18 then runs in the vertical direction.
  • the aeroelastic absorber has a special advantage, due to the dispensability of external energy supply, a high degree of efficiency and a high degree of operational safety.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Bridges Or Land Bridges (AREA)
EP05795034.7A 2004-11-09 2005-10-21 Vorrichtung zur dämpfung von schwingungsbewegungen bei einem bauwerk Active EP1815068B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004053898A DE102004053898A1 (de) 2004-11-09 2004-11-09 Vorrichtung zur Dämpfung von Schwingungsbewegungen bei einem Bauwerk
PCT/EP2005/011327 WO2006050802A1 (de) 2004-11-09 2005-10-21 Vorrichtung zur dämpfung von schwingungsbewegungen bei einem bauwerk

Publications (2)

Publication Number Publication Date
EP1815068A1 EP1815068A1 (de) 2007-08-08
EP1815068B1 true EP1815068B1 (de) 2018-05-16

Family

ID=35677625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05795034.7A Active EP1815068B1 (de) 2004-11-09 2005-10-21 Vorrichtung zur dämpfung von schwingungsbewegungen bei einem bauwerk

Country Status (5)

Country Link
EP (1) EP1815068B1 (ko)
KR (1) KR101353281B1 (ko)
DE (1) DE102004053898A1 (ko)
DK (1) DK1815068T3 (ko)
WO (1) WO2006050802A1 (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107873066B (zh) 2015-04-08 2021-08-10 汉堡-哈尔堡工业大学 用于阻尼桥梁的振动的装置
CN106436948B (zh) * 2016-09-13 2018-11-06 哈尔滨工业大学深圳研究生院 一种圆筒式行波扰流器减阻减振装置
CN106958192B (zh) * 2017-04-13 2018-12-18 华北水利水电大学 一种抑制桥梁颤振的控制结构及方法
CN108035237A (zh) * 2017-12-31 2018-05-15 西南交通大学 一种抑制桥梁颤振及涡振的翼板系统及其控制方法
CN108517760B (zh) * 2018-04-17 2019-05-17 同济大学 一种提高分体式箱梁颤振稳定性的中央稳定机构
CN108842599B (zh) * 2018-07-16 2019-10-01 同济大学 一种基于仿生学的气动减阻装置及桥梁
CN111305042B (zh) * 2020-02-29 2021-08-03 东北林业大学 一种自适应摆动襟翼的大跨桥梁风振控制方法
CN112458882A (zh) * 2020-11-30 2021-03-09 大连理工大学 一类控制桥梁涡振的柔性装置
CN112814457B (zh) * 2021-01-04 2021-12-24 中国矿业大学 一种螺纹套筒式拉压摩擦耗能器及使用方法
CN113235398A (zh) * 2021-06-02 2021-08-10 哈尔滨工业大学 大跨度桥梁主梁单箱梁风致振动的主动吸吹气智能控制装置
CN114922049A (zh) * 2022-03-22 2022-08-19 中国计量大学 一种抑制桥梁风振的控制装置

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Publication number Priority date Publication date Assignee Title
US2270537A (en) * 1939-02-08 1942-01-20 Ludington Charles Townsend Building
JPH05171837A (ja) * 1991-12-25 1993-07-09 Nkk Corp 橋桁のフラッタ振動抑制装置
DK169444B1 (da) * 1992-02-18 1994-10-31 Cowi Radgivende Ingeniorer As System og fremgangsmåde til modvirkning af vindinducerede svingninger i en brodrager
GB9218794D0 (en) * 1992-09-04 1992-10-21 Piesold David D A Bridge deck system
GB2313612B (en) * 1996-05-29 2000-06-07 Marconi Gec Ltd Bridge stabilisation

Non-Patent Citations (1)

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None *

Also Published As

Publication number Publication date
DK1815068T3 (en) 2018-08-13
DE102004053898A1 (de) 2006-05-11
WO2006050802A1 (de) 2006-05-18
KR20070085873A (ko) 2007-08-27
KR101353281B1 (ko) 2014-01-22
EP1815068A1 (de) 2007-08-08

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