EP2198099B1 - Erdbebenisolator mit schiebependel - Google Patents

Erdbebenisolator mit schiebependel Download PDF

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Publication number
EP2198099B1
EP2198099B1 EP07827678A EP07827678A EP2198099B1 EP 2198099 B1 EP2198099 B1 EP 2198099B1 EP 07827678 A EP07827678 A EP 07827678A EP 07827678 A EP07827678 A EP 07827678A EP 2198099 B1 EP2198099 B1 EP 2198099B1
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EP
European Patent Office
Prior art keywords
sliding
elements
cylindrical
intermediate element
cylindrical concave
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.)
Not-in-force
Application number
EP07827678A
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English (en)
French (fr)
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EP2198099A1 (de
Inventor
Agostino Marioni
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ALGA SpA
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ALGA SpA
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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
    • 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
    • E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins

Definitions

  • the present invention relates to a sliding pendulum seismic isolator and particularly to a sliding pendulum seismic isolator of the bi-directional type.
  • the superstructure oscillates increasing and decreasing its potential energy according to the law of motion of a pendulum, whose natural period is defined by the radius of the cylindrical surface.
  • the radius of the cylindrical surfaces is designed in order to optimize the natural period of the pendulum for the reduction of the seismic response of the superstructure.
  • a certain amount of energy is dissipated through the friction between the contact material and the cylindrical surface, thus reducing more the seismic response of the superstructure.
  • seismic isolators comprising different types of isolator, such as, for example, multi-directional isolators and mono- and bi-directional isolators, which define a pattern of constraints between the structure and its foundations such to generate a series of programmed movements and/or rotations during an earthquake.
  • Patent application US 2006/0174555 in the name of Earthquake Protection Systems Inc. discloses a sliding pendulum seismic isolator provided with a lower sliding element and an upper sliding element between which two or three intermediate elements are arranged, provided with spherical surfaces defining a spherical joint.
  • the spherical joint allows the relative rotation and the movement of the lower part with respect to the upper part.
  • the spherical joint also allows to transfer the vertical compression loads and transverse loads occurring during a seismic event from the supported structure to the foundations.
  • the spherical joint of the seismic isolator described in the above-mentioned patent application may be applied to multi-directional supports as well as to mono- and bi-directional supports. Concerning bi-directional supports in particular, the above-mentioned patent application describes a very simple and inexpensive solution, wherein the lower sliding element and the upper one are designed as rails arranged along two directions of movement substantially perpendicular to each other.
  • the bi-directional sliding pendulum seismic isolator includes a rail-shaped lower sliding element and a rail-shaped upper sliding element that are substantially perpendicular to each other and have cylindrical concave surfaces opposite to each other. Between the lower and upper sliding elements a first and a second intermediate element are arranged, which slide along said cylindrical concave surfaces of the sliding elements by means of corresponding cylindrical convex surfaces.
  • the first intermediate element is provided with a cylindrical concave surface opposite to its cylindrical convex sliding surface and having the axis perpendicular to the axis of the cylindrical concave surface of the lower sliding element.
  • the second intermediate element is provided with a concave surface opposite to its cylindrical convex sliding surface and having the axis perpendicular to the axis of the cylindrical concave surface of the upper sliding element.
  • a third intermediate element is arranged, having a lower surface and an upper surface that are both cylindrical convex surfaces and have their axes perpendicular to each other.
  • the three intermediate elements constitute a joint having the shape of a cylindrical double saddle that allows the movement and the relative rotation between the rail-shaped sliding elements.
  • the main advantage of the isolator according to the present invention is that, thanks to the particular cylindrical double-saddle design, it is possible to dimension the joint arranged between the rail-shaped sliding elements in function of the actual load conditions as well as the movements and the rotations foreseen in the two sliding directions, thus avoiding a useless oversizing and above all optimizing the design solutions.
  • Another advantage of the isolator according to the present invention is that the manufacturing of the joint with cylindrical sliding surfaces is remarkably easier and cheaper than the manufacturing of spherical surfaces, thus being able to achieve sliding surfaces of optimum quality in a relatively easy way, both directly working metal surfaces of hard materials such as stainless steel and in the case of coverings with thin plates, which further contributes to the optimization of the isolator costs.
  • a bi-directional sliding pendulum seismic isolator conventionally includes a rail-shaped lower sliding element 1 and a rail-shaped upper sliding element 2 substantially perpendicular to each other.
  • Lower and upper sliding elements 1, 2 are respectively provided with a cylindrical concave sliding surface 1a facing upward and a cylindrical concave sliding surface 2a facing downward.
  • a first and a second intermediate element 3, 4 are arranged, each having a cylindrical convex sliding surface 3a, 4a suitable to allow them to slide respectively along cylindrical concave surfaces 1a, 2a of lower and upper sliding elements 1, 2.
  • a third intermediate elements 5 is arranged between the first and second intermediate element 3, 4.
  • the first intermediate element 3 is provided with a cylindrical concave surface 3b opposite to its cylindrical convex sliding surface 3a and having the axis perpendicular to the axis of the cylindrical concave surface 1a of the lower sliding element 1.
  • the second intermediate element 4 is provided with a cylindrical concave surface 4b opposite to its cylindrical convex sliding surface 4a and having the axis perpendicular to the axis of the cylindrical concave surface 2a of the upper sliding element 2.
  • the third intermediate element 5 has a lower surface 5a and an upper surface 5b that are both cylindrical convex surfaces and have their axes substantially perpendicular to each other.
  • the lower surface 5a and the upper surface 5b of the third intermediate element 5 are in contact with surfaces 3b, 4b of the first and second intermediate element 3, 4, respectively, and allow a relative rotation between the intermediate elements 3, 4.
  • elements 3, 4 and 5 constitute a joint having the shape of a cylindrical double saddle that allows relative rotations and movements of the lower and upper sliding elements 1, 2 in the two sliding directions defined by the isolator.
  • the curvature radiuses of the cylindrical surfaces may be different in the two sliding directions, in order to better fit the actual movements and rotations of the superstructure.
  • coupling means are provided between the lower and upper sliding elements 1, 2 and the intermediate elements 3, 4 and 5 in the transverse direction.
  • Such coupling means are, for example, lateral guides formed on the sliding elements 1, 2 and on the intermediate elements 3, 4, 5 and arranged along the movement direction allowed by the single coupling.
  • the first sliding element 1 is provided with guides 1b 1c along its sides suitable for retaining the first intermediate element 3 in the transverse direction.
  • the transverse constraint between the upper sliding element 2 and the second intermediate element 4 is made up of a pair of guides 4c, 4d fixed on the second intermediate element 4 itself.
  • the third intermediate element 5 is constrained to the first and second intermediate element 3, 4 by means of guides 3c, 3d and 4e, 4f respectively formed thereon.
  • the sliding surfaces 1a, 3a; 2a, 4a; 3b, 5a; 4b, 5b are covered with plates made of controlled friction materials that are combined between them so as to minimize the wear.
  • Controlled friction materials suitable for the application to isolators are, for instance, stainless steel and polymeric materials chosen among, for example, polyethylene, polyamidic resins and PTFE suitably modified and/or filled.
  • the cylindrical concave surfaces 1a, 2a of the lower and upper sliding elements 1, 2 are covered with mirror polished stainless steel plates S and the cylindrical convex surfaces 3a, 4a of the first and second intermediate element 3, 4 are covered with plates T made of polyethylene.
  • the third intermediate element 5 is entirely made of stainless steel with the cylindrical convex surfaces 5a, 5b being mirror polished and slidable on polyethylene plates T that are respectively arranged in suitable seats formed in the cylindrical concave surfaces 3b, 4b of the first and second intermediate element 3, 4.
  • the isolator according to the present invention also preferably comprises a plurality of anchoring elements 6, for example metal plates having a central hole, arranged at the base of the lower and upper sliding elements 1, 2 at their ends.
  • Anchoring elements 6 serve to fix the lower and upper sliding elements 1, 2 to the superstructure and to its foundations by using, for instance, screws 7 engaging the threaded holes of anchor bars 8 buried in concrete.

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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)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Insulators (AREA)

Claims (8)

  1. Erdbebenisolator mit bidirektional schiebendem Pendel, umfassend:
    - ein unteres, schienenförmiges Gleitelement (1) und ein oberes, schienenförmiges Gleitelement (2) in gegenseitiger, rechtwinkliger Anordnung, wobei die besagten, unteren und oberen Gleitelemente (1, 2) mit einer zylindrischen, konkaven Oberfläche (1a) versehen sind, die nach oben gerichtet ist, sowie jeweils mit einer zylindrischen konkaven Oberfläche (2a), die nach unten gerichtet ist,
    - ein erstes und ein zweites Zwischenelement (3, 4), welche zwischen den besagten unteren und oberen Gleitelementen (1, 2) angeordnet sind und jeweils mit einer zylindrischen, konvexen Gleitfläche (3a, 4a) versehen sind, die geeignet sind, um dem ersten und zweiten Zwischenelement (3, 4) das Gleiten entlang der besagten zylindrischen, konkaven Oberflächen (1a, 2a) der oberen und unteren Gleitelemente (1,2) zu erlauben,
    - ein drittes Zwischenelement (5), welches zwischen dem ersten und zweiten Zwischenelement (3, 4) angeordnet ist,
    - ein Kopplungsmittel in der Querrichtung, welches geeignet ist, den horizontalen Lasten während eines seismischen Ereignisses zu widerstehen, dadurch gekennzeichnet, dass
    - das besagte erste Zwischenelement (3) seiner zylindrischen konvexen Gleitfläche (3a) gegenüber liegend eine zylindrische konkave Oberfläche (3b) aufweist, deren Achse rechtwinklig zu der Achse der zylindrischen konkaven Oberfläche (1a) des unteren Gleitelements (1) ist,
    - das besagte zweite Zwischenelement (4) seiner zylindrischen konvexen Gleitfläche (4a) gegenüber liegend eine zylindrische konkave Oberfläche (4b) aufweist, deren Achse rechtwinklig zu der Achse der zylindrischen konkaven Oberfläche (2a) des oberen Gleitelements (2) ist,
    - das besagte dritte Zwischenelement (5) eine untere Oberfläche (5a) aufweist sowie eine obere Oberfläche (5b), welche beide zylindrische konvexe Oberflächen sind, und deren Achsen im Wesentlichen rechtwinklig zueinander sind,
    - die besagten unteren und oberen zylindrischen konvexen Oberflächen (5a, 5b) des dritten Zwischenelements (5) in Kontakt mit der zylindrischen konkaven Oberfläche (3b) des ersten Zwischenelements (3) bzw. der zylindrischen konkaven Oberfläche (4b) des zweiten Zwischenelements (4) sind und geeignet sind, um eine Relativverdrehung zwischen den Zwischenelementen (3, 4) zu erlauben.
  2. Isolator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das besagte Kopplungsmittel in der Querrichtung aus lateralen Führungen (1b, 1c, 4c, 4d, 3c, 3d, 4e, 4f) besteht, welche an den Gleitelementen (1, 2) und an den Zwischenelementen (3, 4) angeformt und/oder befestigt sind und sich entlang der von der einzigen Kopplung zugelassenen Bewegungsrichtung erstrecken.
  3. Isolator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gleitflächen (1a, 3a; 2a, 4a; 3b, 5a; 4b, 5b) mit Platten belegt sind, welche aus Materialien mit kontrollierter Reibung hergestellt sind.
  4. Isolator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die besagten Materialien mit kontrollierter Reibung rostfreier Stahl sowie Polymerwerkstoffe sind, ausgewählt aus Polyethylen, Polyamid-Harzen und modifiziertem und/oder gefülltem PTFE.
  5. Isolator nach Anspruch 3, dadurch gekennzeichnet, dass die besagten Materialien mit kontrollierter Reibung in den beiden Gleitrichtungen des Isolators unterschiedliche Reibungskoeffizienten aufweisen.
  6. Isolator nach Anspruch 3, dadurch gekennzeichnet, dass die zylindrischen konkaven Oberflächen (1a, 2a) des unteren und oberen Gleitelements (1, 2) mit spiegel-polierten Platten (S) aus rostfreiem Stahl bedeckt sind, und die zylindrischen konvexen Oberflächen (3a, 4a) des ersten und zweiten Zwischenelements (3, 4) mit Platten (T) aus Polyethylen bedeckt sind, und dadurch, dass das dritte Zwischenelement (5) vollstandig aus rostfreiem Stahl hergestellt ist, wobei dessen zylindrischen, konvexen Oberflächen (5a, 5b) spiegelpoliert sind und auf den Platten (T) aus Polyethylen verschiebbar sind, welche ihrerseits in geeigneten Sitzen aufgenommen sind, die in den zylindrischen konkaven Oberflächen (3b, 4b) des ersten bzw. zweiten Zwischenelements (3, 4) eingeformt sind.
  7. Isolator nach einem der vorhergehenden Ansprüche, ferner gekennzeichnet durch eine Mehrzahl von Verankerungselementen (6), welche an der Basis der unteren und oberen Gleitelemente (1, 2) an deren Enden angeordnet sind, wobei die besagten Verankerungselemente (6) geeignet sind, um die Festlegung des unteren und oberen Gleitelements (1, 2) an der oberen Struktur und an ihren Fundamenten zu erlauben.
  8. Isolator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die besagten Verankerungselemente (6) Metallplatten sind, welche mit einem zentralen Loch versehen sind.
EP07827678A 2007-09-11 2007-09-11 Erdbebenisolator mit schiebependel Not-in-force EP2198099B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000626 WO2009034585A1 (en) 2007-09-11 2007-09-11 Sliding pendulum seismic isolator

Publications (2)

Publication Number Publication Date
EP2198099A1 EP2198099A1 (de) 2010-06-23
EP2198099B1 true EP2198099B1 (de) 2011-02-02

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Application Number Title Priority Date Filing Date
EP07827678A Not-in-force EP2198099B1 (de) 2007-09-11 2007-09-11 Erdbebenisolator mit schiebependel

Country Status (4)

Country Link
EP (1) EP2198099B1 (de)
AT (1) ATE497565T1 (de)
DE (1) DE602007012373D1 (de)
WO (1) WO2009034585A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017082839A1 (en) 2015-11-13 2017-05-18 Ugur Gunduz Earthquake isolator and production method of such an isolator
US11502033B2 (en) 2018-09-11 2022-11-15 Samsung Electronics Co., Ltd. Semiconductor devices including contacts and conductive line interfaces with contacting sidewalls

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE512269T1 (de) * 2007-02-06 2011-06-15 Alga Spa Erdbebenisolator mit schiebependel
IT1396455B1 (it) * 2009-11-16 2012-11-23 Tecnostrutture S R L Sistema di elementi pre-fabbricati sismoresistenti per l'edilizia, e relativo procedimento di posa in opera.
IT1404858B1 (it) * 2011-02-21 2013-12-09 Milano Politecnico Supporto anti-sismico.
ITTO20130111A1 (it) 2013-02-11 2014-08-12 B2B Srl Isolatore antisismico.
DE102013104064A1 (de) * 2013-04-22 2014-10-23 Maurer Söhne Engineering GmbH & Co. KG Bauwerkslager
ITMI20131907A1 (it) * 2013-11-18 2015-05-19 Cave S R L Cuscinetto a strisciamento per l'ingegneria strutturale
US11421435B2 (en) * 2018-12-12 2022-08-23 Universidad Catolica De La Santisima Concepcion Kinematic seismic isolation device
IT201900005478A1 (it) * 2019-04-09 2020-10-09 Univ Pisa Dispositivo per proteggere manufatti, in particolare opere d’arte, da azioni sismiche e fenomeni vibratori in genere
IT202000002542A1 (it) 2020-02-10 2021-08-10 Fip Mec S R L Isolatore antisismico del tipo a pendolo scorrevole

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
DE3819591A1 (de) * 1988-06-09 1989-12-14 Hubert Dipl Ing Gallasch Bebensichere ausfuehrung der gebaeuden durch pendellagerung
US6021992A (en) * 1997-06-23 2000-02-08 Taichung Machinery Works Co., Ltd. Passive vibration isolating system
DE102005060375A1 (de) * 2005-12-16 2007-06-21 Steelpat Gmbh & Co. Kg Gleitpendellager

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017082839A1 (en) 2015-11-13 2017-05-18 Ugur Gunduz Earthquake isolator and production method of such an isolator
US11502033B2 (en) 2018-09-11 2022-11-15 Samsung Electronics Co., Ltd. Semiconductor devices including contacts and conductive line interfaces with contacting sidewalls

Also Published As

Publication number Publication date
ATE497565T1 (de) 2011-02-15
EP2198099A1 (de) 2010-06-23
DE602007012373D1 (de) 2011-03-17
WO2009034585A1 (en) 2009-03-19

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