EP1016765A2 - Statische und dynamische Belastungskräfte-Verteilung und -Begrenzungsvorrichtung für Zivil- und Industrie-Konstruktionen - Google Patents

Statische und dynamische Belastungskräfte-Verteilung und -Begrenzungsvorrichtung für Zivil- und Industrie-Konstruktionen Download PDF

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Publication number
EP1016765A2
EP1016765A2 EP99125754A EP99125754A EP1016765A2 EP 1016765 A2 EP1016765 A2 EP 1016765A2 EP 99125754 A EP99125754 A EP 99125754A EP 99125754 A EP99125754 A EP 99125754A EP 1016765 A2 EP1016765 A2 EP 1016765A2
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EP
European Patent Office
Prior art keywords
limiting device
wires
load dissipating
dissipating
elements
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.)
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Application number
EP99125754A
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English (en)
French (fr)
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EP1016765A3 (de
Inventor
Samuele Infanti
Maria Gabriella Castellano
Pierluigi Galeazzo
Renato Chiarotto
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FIP Industriale SpA
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FIP Industriale SpA
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Publication date
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Publication of EP1016765A2 publication Critical patent/EP1016765A2/de
Publication of EP1016765A3 publication Critical patent/EP1016765A3/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a load dissipating and limiting device for protecting, recovering and making civil and industrial works, having a high strength against undesired static, seismic, aeolian and dynamic effects.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing a load dissipating and limiting device, providing an improved stability and increased damping of the vibrations, as well as the possibility of connecting two or more constructional or structural elements which could be subjected to mutual displacements, in order to dampen and limit said possible displacements.
  • a main object of the present invention is to provide a damping technique which can be easily applied owing to the use of very compact and/or easily concealable devices, thereby overcoming any architectural limitation imposed by the designer.
  • a further object is to provide a damping material having a very good resistance against to the atmospheric agents.
  • Yet another object of the present invention is to provide such a device allowing to limit the loading applied to the end portions thereof, as a strain or deformation is imposed and which, moreover, is specifically designed for limiting a displacing exceeding a maximum designed value, with the additional possibility of self-orienting according to a direction required by the structure or construction, by means of anchoring articulated connections and/or by exploiting its flexibility or elastic properties.
  • Another object of the present invention is to provide such a dissipating device which is very stable in operation also under temperature variations and as the load application frequency is changed.
  • a load dissipating and limiting device for protecting, recovering or making civil and industrial works, having a high strength against undesired static effects, seismic effects, aeolian and dynamic effects in general, characterized in that said device comprises a plurality of shape memory alloy wires operating based on a super-elastic effect and being provided with end portions interconnected to connecting elements for coupling to a construction to be protected.
  • the load dissipating and limiting device for protecting, recovering and making civil and industrial works, having a high strength or resistance against undesired effects such as static effects, seismic effects, aeolian effects and dynamic effects in general, according to the present invention, which has been generally indicated in Figure 1 by the reference number 1, comprises a plurality of wires 2 made of a shape memory alloy (S.M.A.), exploiting the super-elastic effect, which are arranged in an adjoining mutual relationship, thereby the individual wires will operate in parallel to provide the designed reaction, the length of said wires being set depending on the designed displacement
  • S.M.A. shape memory alloy
  • said wires 2 are coupled to locking elements, generally indicated by the reference number 3, which are coupled to articulated coupling elements or connecting elements 4, in order to apply them to the structures to be protected, possibly under a stretched condition.
  • the locking elements comprise a conic locking wedge 10, which is engaged in a sleeve 11 having an inner conic surface, and therebetween the end portions of said wires 2 are arranged; the wedge and sleeve or jacket are made of a material having a surface hardness less than that of said wires, thereby the inner conic wedge, having a less hardness, is forcibly engaged in its seat thereby locking said wires.
  • a glass element 12 is moreover provided for holding therein said sleeve or jacket and wedge, said element 12 being coupled to the connecting or coupling elements which, for example, can comprise a latching stem.
  • the wires 2 are introduced into a liquid, a fat material or gel material, having high thermally conductive characteristics and, in particular, having a thermal transmission equal to or better than that of ethylenglycol.
  • a liquid or fluid holding bellows 20 for holding therein a liquid or fluid 21 is provided.
  • the operation or performance of the device will depend on the thermomechanical characteristics of the shape memory alloy as used and installed under a wire form.
  • Figure 2 illustrates a graphic diagram related to the mechanical characteristics of the used wires and clearly illustrating the obtained super-elastic effect by subjecting to an axial deformation or strain a wire sample.
  • This deformation or strain range ⁇ A - ⁇ M in which the phase transformation occurs, can be used for the intended purposes.
  • the cycle of Figure 2 shows the energy dissipated for unit of volume by the used material, and can be easily transformed into the characteristic curve of the full limiting device, if the number, diameter and length of the used wires are known, as clearly shown in Figure 3.
  • the subject device will be conventionally designed to operate in a displacement range S A ⁇ S M , at a force level within the range of F 1 ⁇ F 2 .
  • the device can be pre-stretched to a designing force level by applying a displacement S* corresponding to a preset strain or deformation ⁇ * in the range ⁇ A ⁇ ⁇ M .
  • the stress corresponding to the deformation or strain ⁇ Y much greater than the austenite-martensite transformation stress, will provide a safety factor, of a comparatively very high value, both on the yielding and on the breaking point.
  • the progressive stiffening effect corresponding to strains greater than ⁇ M , can be used for limiting the displacement of the structure the dissipating device is applied to, thereby preventing any undesired deformations of the structures from occurring.
  • a further SMA super-elastic wire arrangement can provide a characteristic curve of the subject device among them shown in Figure 5 ( Figures 5a, 5b and 5c).
  • the wire which are pre-stretched to a strain or deformation level of ⁇ *, with 0 ⁇ * ⁇ M , for any mutual displacement imposed to the anchoring ends thereof, will be always strained under a pulling force and will react according to the characteristic curve already shown in Figure 2.
  • the assembling of the spools, the axial distance of which will be advantageously equal or less than that of the respective pin elements, on said pin elements, can be carried out exclusively by stretching the wires and, accordingly, by deforming them to increase their axial distance to the distance existing between the pin elements.
  • the pin-spool system can also comprise a single monolithic element, in order to allow a simple assembling to be easily performed.
  • the anchoring hardware ( Figure 6 - elements of the type 4 and 5) must be suitably perforated, by elongated holes, to provide both an abutment of a pin element and an entraining displacement as imposed by the other pin.
  • This system can provide, for operating at a frequency greater than 1 Hz, to immerge the wires in a suitable medium ( Figure 6 - element of type 6).
  • anchoring of the wires shown in Figure 6 can be replaced by the other above disclosed type using the wedge locking system.
  • the details of the system for anchoring the device to the structure can be designed depending on the contingent requirements, to better fit the considered type of construction.
  • the main feature of the latter system is that, differently from the first, it would not require to be prestretched on the field or as it is applied to the structure, since the wires are actually prestretched during the assembling thereof.
  • the device will provide a reaction exclusively as a mutual displacement occurs.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Building Environments (AREA)
EP99125754A 1998-12-28 1999-12-23 Statische und dynamische Belastungskräfte-Verteilung und -Begrenzungsvorrichtung für Zivil- und Industrie-Konstruktionen Withdrawn EP1016765A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI982839 1998-12-28
IT1998MI002839A IT1309546B1 (it) 1998-12-28 1998-12-28 Dispositivo dissipatore e limitatore di carico per la protezione,ilrestauro e la realizzazione di opere civili ed industriali ad elevata

Publications (2)

Publication Number Publication Date
EP1016765A2 true EP1016765A2 (de) 2000-07-05
EP1016765A3 EP1016765A3 (de) 2001-06-06

Family

ID=11381361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99125754A Withdrawn EP1016765A3 (de) 1998-12-28 1999-12-23 Statische und dynamische Belastungskräfte-Verteilung und -Begrenzungsvorrichtung für Zivil- und Industrie-Konstruktionen

Country Status (2)

Country Link
EP (1) EP1016765A3 (de)
IT (1) IT1309546B1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003064717A1 (en) * 2002-02-01 2003-08-07 Mide Technology Corporation Enhery aborbring shape memory alloys
WO2007039271A3 (en) * 2005-09-30 2007-05-31 Acandis Gmbh & Co Kg Damping apparatus, use of a shape memory alloy and method for changing damping characteristics
CN100410464C (zh) * 2006-06-16 2008-08-13 大连理工大学 混合型形状记忆合金阻尼器
ITBA20100045A1 (it) * 2010-11-09 2012-05-10 Consorzio Cetma Dispositivo sma applicabile in edilizia a strutture spingenti agente contemporaneamente contro effetti termici e sismici
CN103671696A (zh) * 2013-11-26 2014-03-26 徐州工程学院 一种自复位抗拉扭形状记忆合金阻尼器
CN104389355A (zh) * 2014-12-04 2015-03-04 长安大学 一种抗震控制阻尼器大变形保护装置
EP2942543A1 (de) 2014-05-09 2015-11-11 Fip Industriale S.P.A. Isolationsvorrichtung zur absortpion seismischen wellen, die auf eine referenzfläche treffen
JP2017503099A (ja) * 2014-01-02 2017-01-26 ザ ユニヴァーシティ オブ ブリティッシュ コロンビア オカナガン ピストンベースの自己センタリングブレース装置
CN112647610A (zh) * 2021-01-21 2021-04-13 太原理工大学 一种装配式竹节型消能减震装置及其使用方法
US10995511B2 (en) * 2018-11-29 2021-05-04 Chunwei Zhang Self-recovering energy dissipation steel support with shape memory alloy damper

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968500B (zh) * 2017-04-17 2022-08-23 苏州科技大学 一种sma自复位延性钢支撑
CN117661429A (zh) * 2024-01-19 2024-03-08 合肥工业大学 一种位移增大型复合桥梁防落梁限位装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842312A (en) * 1995-03-01 1998-12-01 E*Sorb Systems Hysteretic damping apparati and methods
US6170202B1 (en) * 1997-06-12 2001-01-09 University Of Puerto Rico Building system using shape memory alloy members

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003064717A1 (en) * 2002-02-01 2003-08-07 Mide Technology Corporation Enhery aborbring shape memory alloys
WO2007039271A3 (en) * 2005-09-30 2007-05-31 Acandis Gmbh & Co Kg Damping apparatus, use of a shape memory alloy and method for changing damping characteristics
US8328962B2 (en) 2005-09-30 2012-12-11 Acandis Gmbh & Co. Kg Damping apparatus, use of a shape memory alloy and method for changing damping characteristics
CN100410464C (zh) * 2006-06-16 2008-08-13 大连理工大学 混合型形状记忆合金阻尼器
ITBA20100045A1 (it) * 2010-11-09 2012-05-10 Consorzio Cetma Dispositivo sma applicabile in edilizia a strutture spingenti agente contemporaneamente contro effetti termici e sismici
EP2450506A3 (de) * 2010-11-09 2014-01-08 Consorzio Cetma System umfassend eine Formgedächtnislegierung-Vorrichtung
CN103671696A (zh) * 2013-11-26 2014-03-26 徐州工程学院 一种自复位抗拉扭形状记忆合金阻尼器
CN103671696B (zh) * 2013-11-26 2016-06-29 徐州工程学院 一种自复位抗拉扭形状记忆合金阻尼器
JP2017503099A (ja) * 2014-01-02 2017-01-26 ザ ユニヴァーシティ オブ ブリティッシュ コロンビア オカナガン ピストンベースの自己センタリングブレース装置
EP2942543A1 (de) 2014-05-09 2015-11-11 Fip Industriale S.P.A. Isolationsvorrichtung zur absortpion seismischen wellen, die auf eine referenzfläche treffen
CN104389355A (zh) * 2014-12-04 2015-03-04 长安大学 一种抗震控制阻尼器大变形保护装置
CN104389355B (zh) * 2014-12-04 2016-07-06 长安大学 一种抗震控制阻尼器大变形保护装置
US10995511B2 (en) * 2018-11-29 2021-05-04 Chunwei Zhang Self-recovering energy dissipation steel support with shape memory alloy damper
CN112647610A (zh) * 2021-01-21 2021-04-13 太原理工大学 一种装配式竹节型消能减震装置及其使用方法

Also Published As

Publication number Publication date
EP1016765A3 (de) 2001-06-06
IT1309546B1 (it) 2002-01-23
ITMI982839A1 (it) 2000-06-28

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