WO1998030771A1 - Systeme d'amortissement passif - Google Patents

Systeme d'amortissement passif Download PDF

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Publication number
WO1998030771A1
WO1998030771A1 PCT/JP1998/000096 JP9800096W WO9830771A1 WO 1998030771 A1 WO1998030771 A1 WO 1998030771A1 JP 9800096 W JP9800096 W JP 9800096W WO 9830771 A1 WO9830771 A1 WO 9830771A1
Authority
WO
WIPO (PCT)
Prior art keywords
damping
vibration
structural member
auxiliary
horizontal
Prior art date
Application number
PCT/JP1998/000096
Other languages
English (en)
Japanese (ja)
Inventor
Yoshihiko Akao
Original Assignee
Yoshihiko Akao
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 Yoshihiko Akao filed Critical Yoshihiko Akao
Publication of WO1998030771A1 publication Critical patent/WO1998030771A1/fr

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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
    • 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
    • E04H9/0237—Structural braces with damping devices

Definitions

  • the present invention provides a so-called passive vibration damping system (damping method) that attenuates interstory deformation vibration generated in a layered structure due to disturbance such as an earthquake or wind by a method that does not require vibration control by external force or the like. Vibration method, vibration control structure and system including materials).
  • This vibration damping system can be applied to a wide range of fields, such as civil engineering, construction, machinery, etc., as long as it is a layered structure, regardless of whether it is a multi-layer or single-layer structure. It is effective for multi-story high-rise buildings composed of beams, floors and floors. Background art
  • seismic isolation A seismic isolation structure that temporarily cuts off the flow of seismic force transmitted from the ground, and a structure against external forces such as earthquakes and wind, using vibration damping devices installed inside or outside the structure. Vibration control structures that try to reduce the size of objects have been put to practical use or proposed for structures such as buildings and bridges.
  • the vibration damping structure is based on the difference in the method of damping the vibration response of the structure, and it is possible to control the vibration variably and independently according to the response state.
  • Passive vibration suppression which attempts to attenuate vibrations, is divided into two types. Regardless of the method of damping, in the structure proposed in the past, a new damping device was installed at a main part of the vibration mode such as a building or a tower, or a reaction force of a different damping from the main structure was applied. Auxiliary structure must be set, and there is a major cost disadvantage that the space and load of the vibration damping device increase, and there is no relation to the structure that supports the frame, and the extra structure increases.
  • vibration suppression methods have been proposed to control the deformation stiffness between layers.However, the amount of interlayer deformation of multilayer structures caused by earthquakes, winds, etc. is small compared to the height of the layers. Therefore, it is considered difficult to obtain a sufficient damping effect even if the rigidity is suppressed between layers. Disclosure of the invention
  • the present invention is a vibration damping structure that attenuates deformation vibration caused by external forces such as earthquakes and winds without installing new additional devices or additional structures by replacing part of the main structure that supports the frame with auxiliary structures. is there.
  • the damping method is to use a relatively rigid floor diaphragm for the entire structure.
  • FIG. 1 shows a case where earthquake-resistant walls are used as auxiliary structural members.
  • FIG. 2 is a diagram when a brace is used as an auxiliary structural member.
  • FIG. 3 is a diagram illustrating the principle of how a vibration damping structure absorbs shear deformation.
  • Fig. 4 is a diagram of an example of a member for attaching a damping element between a beam and a shear wall.
  • the system proposed in the present invention is a type of passive vibration suppression that attempts to suppress vibration due to interlayer deformation.However, the main structure that supports the frame without any extra devices or extra structures such as vibration suppression devices is provided. In this method, a slight deformation between layers is increased by applying damping force by replacing a part with an auxiliary structural member containing a damping material, thereby obtaining a damping effect.
  • the auxiliary structural members used here support the load of the skeleton similarly to the main structural members.
  • columns 1 and beams 2 are basic main structural members that support the load of the skeleton, and are the parts that deform and vibrate due to disturbances such as earthquakes and wind.
  • the earthquake-resistant wall 3 and the brace 4 are auxiliary structural members.
  • the upper end or lower end of the auxiliary structural part is fixed to the floor diaphragm of the main structural part, and the other end not fixed sandwiches the damping element 5. It is joined with another floor diaphragm.
  • the damping element supports the load It is joined to another floor diaphragm with a material such as high-damping rubber having damping properties. Therefore, the auxiliary structural members can support part of the vertical and horizontal loads of the building.
  • the same damping effect can be expected in the auxiliary structure where a damping element is sandwiched between the upper and lower ends, or a structure where the upper and lower ends are fixed to the floor diaphragm and the damping element is sandwiched between the upper and lower ends.
  • the left and right ends of the auxiliary structural parts such as braces and earthquake-resistant walls are not in contact with the main structural members so as not to be deformed by the deformation and vibration of the skeleton.
  • the feature of the present invention is that the vertical load and the horizontal load of the skeleton can be supported also on the auxiliary structure portion by using the high damping rubber, and the structure can be rationalized.
  • Fig. 4 shows an example of a member structure for connecting a beam 2 that is a part of the floor diaphragm to a shear wall via a damping element 5, and the beam 2 is connected to a shear wall by a stud 8 fixed to a flange 7.
  • the damping performance between the layers can be arbitrarily given by changing the thickness and the effective area of the damping element, in addition to the inherent properties of the material used as the damping element.
  • the amount of damping performance between the layers may be determined in consideration of the vibration characteristics of the entire structure.
  • the damping element is a high damping rubber that is a synthetic rubber with a damping constant of 10% or more. Is considered appropriate. However, what kind of member should be used should be selected in accordance with conditions such as the availability of the structure and whether the structure of the skeleton is a reinforced concrete structure or a steel frame structure. Industrial applicability
  • this vibration control system is difficult to have a seismic isolation structure like a skyscraper, it is difficult to suppress vibration externally, it has a long natural period and internal damping / J ⁇ Are suitable.
  • This vibration control system does not require a special vibration control device, is a simple structure and has no waste in attenuating slight distortion between layers. It is expected that this system can be realized at a small cost.
  • the columnar amount of the main structural members can be reduced, and therefore, the effect of reducing the seismic load applied to the structure by lengthening the natural period of the frame can be expected.
  • the above advantages and seismic resistance can be improved at the same time.

Abstract

Procédé pour amortir la vibration d'une structure sous l'effet de perturbations comme les séismes et le vent, et plus particulièrement, combinaison de procédé d'amortissement, de structure et de matériaux ne nécessitant aucun dispositif d'amortissement spécifique et assurant un amortissement important par application d'une résistance efficace à une légère déformation entre des couches supérieures et inférieures, moyennant une amélioration simple de la construction. Dans les structures à couches multiples comme celles de bâtiments, qui comprennent des colonnes (1), des poutres (2) et des planchers, supportant différentes charges exercées sur un squelette, en tant qu'éléments principaux de la structure, et qui comprennent aussi des murs antisismiques (3) ou des renforcements antisismiques (4), supportant des charges verticales et horizontales mais sans déformation horizontale, en tant qu'éléments auxiliaires de la structure, on définit un système d'amortissement comme suit: rattachement d'une extrémité supérieure ou inférieure de l'élément auxiliaire de la structure à un diaphragme de plancher (surface représentant des poutres et un plancher) des éléments principaux de la structure, l'autre extrémité libre étant fixée à un autre diaphragme de plancher, avec entre les deux un élément amortisseur (5), lequel supporte une charge et a une capacité d'amortissement. Un procédé d'amortissement consiste à convertir une légère déformation de cisaillement horizontal intervenant entre les couches en une contrainte importante due au cisaillement sur une fine partie d'élément amortisseur, de sorte que ledit élément absorbe l'énergie de vibration lorsqu'une perturbation fait vibrer la structure à couches multiples. L'utilisation de matériaux comme un caoutchouc à fort amortissement pour la fabrication du caoutchouc amortisseur offre l'avantage simultané d'une absorption d'énergie et d'un soutien de charge.
PCT/JP1998/000096 1997-01-14 1998-01-14 Systeme d'amortissement passif WO1998030771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9035447A JPH10196720A (ja) 1997-01-14 1997-01-14 パッシブ制振システム
JP9/35447 1997-01-14

Publications (1)

Publication Number Publication Date
WO1998030771A1 true WO1998030771A1 (fr) 1998-07-16

Family

ID=12442084

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/000096 WO1998030771A1 (fr) 1997-01-14 1998-01-14 Systeme d'amortissement passif

Country Status (2)

Country Link
JP (1) JPH10196720A (fr)
WO (1) WO1998030771A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006169754A (ja) * 2004-12-14 2006-06-29 Fujita Corp 制振装置を備えたコンクリート造建物のコンクリート壁及びコンクリート壁に埋設して用いる制振装置
JP2009074655A (ja) * 2007-09-21 2009-04-09 Tokai Rubber Ind Ltd 自動車用制振装置
KR101155232B1 (ko) * 2010-03-05 2012-06-13 전남대학교산학협력단 3차원 다공성 구조체를 이용한 구조물 진동 제어용 댐퍼 시스템
JP2020153453A (ja) * 2019-03-20 2020-09-24 株式会社大林組 木質構造

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6347477A (ja) * 1986-08-18 1988-02-29 株式会社フジタ 制震壁
JPH0198870U (fr) * 1987-12-24 1989-07-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6347477A (ja) * 1986-08-18 1988-02-29 株式会社フジタ 制震壁
JPH0198870U (fr) * 1987-12-24 1989-07-03

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006169754A (ja) * 2004-12-14 2006-06-29 Fujita Corp 制振装置を備えたコンクリート造建物のコンクリート壁及びコンクリート壁に埋設して用いる制振装置
JP2009074655A (ja) * 2007-09-21 2009-04-09 Tokai Rubber Ind Ltd 自動車用制振装置
KR101155232B1 (ko) * 2010-03-05 2012-06-13 전남대학교산학협력단 3차원 다공성 구조체를 이용한 구조물 진동 제어용 댐퍼 시스템
JP2020153453A (ja) * 2019-03-20 2020-09-24 株式会社大林組 木質構造

Also Published As

Publication number Publication date
JPH10196720A (ja) 1998-07-31

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