EP2899334A1 - Auflager mit kontrollierter Steifigkeit - Google Patents

Auflager mit kontrollierter Steifigkeit Download PDF

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Publication number
EP2899334A1
EP2899334A1 EP14152943.8A EP14152943A EP2899334A1 EP 2899334 A1 EP2899334 A1 EP 2899334A1 EP 14152943 A EP14152943 A EP 14152943A EP 2899334 A1 EP2899334 A1 EP 2899334A1
Authority
EP
European Patent Office
Prior art keywords
recess
force transmission
block
convex surface
homogeneous material
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.)
Granted
Application number
EP14152943.8A
Other languages
English (en)
French (fr)
Other versions
EP2899334B1 (de
Inventor
Micaël Connesson
Sébastien Diaz
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
Original Assignee
Soletanche Freyssinet SA
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
Priority to EP14152943.8A priority Critical patent/EP2899334B1/de
Application filed by Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Priority to ES14152943.8T priority patent/ES2603954T3/es
Priority to JP2016548688A priority patent/JP2017510760A/ja
Priority to EP15710721.0A priority patent/EP3099868B1/de
Priority to KR1020167023228A priority patent/KR20160114113A/ko
Priority to TR2018/07331T priority patent/TR201807331T4/tr
Priority to PCT/EP2015/051740 priority patent/WO2015114024A1/fr
Priority to US15/114,693 priority patent/US20160348389A1/en
Publication of EP2899334A1 publication Critical patent/EP2899334A1/de
Application granted granted Critical
Publication of EP2899334B1 publication Critical patent/EP2899334B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins

Definitions

  • the invention relates to the field of support apparatus.
  • the invention relates more particularly to a support apparatus comprising at least two force transmission parts in mutual contact for transmitting efforts directed substantially in a predefined direction.
  • Such bearing devices are well known for equipping various types of structures or ensuring the descent of load under equipment. They find in particular an application as a structural support device, when a purely static function of descent of load is required, and as an isolator, when a seismic function of filtration and / or damping is required .
  • the piece 1 has two convex surfaces 1a, 1b opposite one another, the concavity 20a of a first support plate 2a being placed opposite the first convex surface 1a and the concavity 20b of a second bearing plate 2b being placed facing the second convex surface 1b.
  • a sliding material 3 is interposed in a layer between the convex surface part 1 and the concavity 20a, 20b of the support plate 2a, 2b so as to accommodate their relative displacements by translation and / or rotation.
  • the sliding material defines, by its tribological properties, the coefficient of friction characteristic of the bearing device 100.
  • the tribological properties of the sliding material 3 are adapted to the intended application of the bearing device.
  • the sliding material 3 preferably has a low coefficient of friction in order to allow the movements of the supported structure by transmitting as little effort as possible to the supporting structure.
  • the sliding material 3 preferably has a higher coefficient of friction in order to dissipate the maximum force and thus limit the displacement of the supported structure relative to the supporting structure.
  • the support plates 2a, 2b have two main functions.
  • the first function is to allow the transfer of the forces applied by the piece 1 with convex surfaces, sliding in the concavity 20a, 20b of the support plate 2a, 2b, to the surrounding structures by distributing them as uniformly as possible.
  • the support plates 2a, 2b are dimensioned by the stress admissible by the surrounding structures, this admissible stress depending on the constituent materials of these structures and the quality of their contact with the support plates 2a, 2b. Very often, wedging by delivery or injection of mortar between the support plate 2a and its support is made so that the contact between the support plate 2a and its support is of satisfactory quality.
  • An equivalent setting can be made between the supported structure (bridge, building) and the support plate 2b.
  • the second function of the support plates 2a, 2b consists in ensuring the good distribution of the contacts with the part 1 with convex surfaces and the good distribution of the forces associated with these contacts in order to control the coefficient of friction.
  • the contact forces are closely related to two parameters, namely (i) the geometry of the convex surface 1a, 1b located opposite the concavity 20a, 20b of the support plate 2a, 2b and (ii) the properties mechanical sliding material 3.
  • the influence of the geometry of the convex surface 1a, 1b on the contact forces is related to the difference between the radius of curvature of the convex surface 1a, 1b and the radius of curvature of the concavity 20a, 20b lying in contact with to face. It should be noted that this difference depends on the machining tolerances and the mechanical properties of the sliding material 3.
  • the influence of the mechanical properties of the sliding material 3 on the contact forces is related (i) to the coefficient of friction of the sliding material 3, depending in particular on the contact pressure and the temperature, and (ii) the stiffness in compression of the sliding material 3, depending on its modulus of elasticity.
  • the support plates are generally massive and therefore very stiff; they are for example made of optionally stainless steel. Therefore, their design must be compatible with machining tolerances depending on the size of the elements of the support device 100.
  • the support plates 2a, 2b are therefore dimensioned at least relative to the stress admissible by the surrounding structures and to the contact forces generated by the part 1 with convex surfaces.
  • the contact forces are concentrated at the level of the contact zone between the convex surface 1a, 1b and the corresponding concavity 20a, 20b. This zone is all the more narrow as the difference in radius of curvature between the convex surface and the corresponding concavity increases.
  • the present invention aims in particular to provide satisfactory bearing devices in terms of stress smoothing and sizing.
  • a support apparatus comprising at least two force transmission parts in mutual contact for transmitting forces directed substantially in a predefined direction.
  • One of the two pieces has a convex surface and the other of the two pieces has a concave surface of greater radius of curvature than said convex surface.
  • One of the convex and concave surfaces is lined with a sliding material.
  • the convex surface is in contact with the concave surface in a contact zone.
  • At least one of the two force transmission parts comprises a block of homogeneous material having at least one recess in a portion substantially aligned with the contact zone along said direction.
  • the recess is of shape and dimensions selected according to the stiffness, shape and dimensions of the block of homogeneous material.
  • the shape and dimensions of the recess are further selected according to the stiffness of the sliding material and the shape and dimensions of the slip material liner.
  • the homogeneous material block of the force transmission part has a recess centered with respect to a median axis of the convex surface or the concave surface of the force transmission part.
  • the homogeneous material block of the force transmission part has a plurality of recesses symmetrically distributed with respect to a median axis of the convex surface or the concave surface of the force transmission part.
  • the block of homogeneous material of the force transmission part has at least one recess in one face of the force transmission part opposite said convex surface or said concave surface.
  • the force transmission part comprises two parts assembled together by an assembly surface to form the block of homogeneous material and the recess is formed at the assembly surface.
  • At least one recess is filled with a filling material having a stiffness lower than the stiffness of the homogeneous material of the block.
  • the filler material may be selected from aluminum, bronze and ultra high performance fiber concrete, without this being limiting.
  • the variation of local stiffness of the force transmission part can still depend on the choice of filling material, for better control of this variation and a wider range of variation.
  • the filling material fills the recess so as to be flush with the face of the force transmission part comprising said recess.
  • the filling material can make, to the block of homogeneous hollow material, its shape before recess. A small dimensional gap, for example a few tenths of a millimeter is also possible.
  • This feature has the advantage, all the more appreciable that the recess passes through the force transmission part from side to side, to avoid the presence, at a mouth of the recess, protruding ridges abrading the slip material packing.
  • each part of the apparatus can be described as placed “on” or “under” another part of the apparatus, which means that this piece can be placed either “directly” or “indirectly” “(By the interposition of an additional element) on or under the said other part of the apparatus.
  • the terms 'lower' and 'upper', 'under' and 'on', 'below' and 'above' used hereinafter are considered to indicate respectively the support side of the support apparatus and the side of the structure (bridge, building) to be supported by the support device.
  • the bearing device according to the invention is illustrated in the particular case of a spherical type of support. It should be understood that this is only a simple illustration, and that the features of the invention are applicable to any type of structural support.
  • Pendulum support devices in particular are another family that can benefit from the teaching of the invention, for example sliding pendulum bearings (FPS, "Friction Pendulum Sliding").
  • the support apparatus 100 comprises several force transmission parts 1, 2a, 2b in mutual contact to transmit forces. These efforts are directed predefined direction D; at least, these efforts are substantially directed along said direction.
  • One of the two parts has a convex surface 1a, 1b and the other of the two parts has a concave surface 20a, 20b of greater radius of curvature than said convex surface 1a, 1b.
  • the convex surface 1a, 1b is in contact with the concave surface 20a, 20b in a contact zone through which the forces are transmitted.
  • the direction D can be defined in different ways resulting in substantially the same result namely the definition, along its length, of the same part aligned with the contact zone.
  • the direction D is for example defined as orthogonal to a plane substantially comprising a contact zone between two parts and as being centered with respect to this zone.
  • the direction D can also be defined as corresponding to a median axis of one of the force transmission parts 1, 2a, 2b or more particularly corresponding to a median axis of the convex surface 1a, 1b or of the concave surface 20a, 20b of one of the force transmission parts 1, 2a, 2b.
  • the direction D can also be defined as an average line on any set of lines having the directions defined above.
  • the direction D is defined as a mean line on the three median axes 11, 21a and 21b of the three force transmission parts 1, 2a, 2b.
  • strictly the same direction D is defined that it is according to one or other of the definitions given above.
  • one of said convex and concave surfaces is lined with a sliding material 3.
  • the latter is interposed in a lining or equivalently in a layer between two force transmission parts 1, 2a, 2b at least in their contact zone, to accommodate relative movements by translation and / or rotation of these parts.
  • the bearing device is such that at least one of the two force transmission parts 1, 2a, 2b comprises a block of homogeneous material having at least one recess 4, 4a, 4b , 4c, 4d in a portion aligned with the contact zone along said direction D, or at least in a portion substantially aligned with the contact zone along said direction D.
  • the extent of said portion around the direction D depends on the extent of the contact zone itself dependent on the difference in radius of curvature between the convex surface 1a, 1b and the concave surface 20a, 20b. This extent can be determined by calculation according to the particular mechanical parameters of each structure equipped with a bearing device according to the invention.
  • the force transmission parts 1, 2a, 2b comprise a convex part 1 and at least one support plate 2a comprising a concavity 20a.
  • the convex piece 1 is placed in and on the concavity 20a.
  • the convex piece 1 more particularly comprises a first convex surface 1a which is located opposite the concavity 20a of the support plate 2a.
  • the backing plate may comprise a convex surface and the part situated on this backing plate may comprise a concavity situated opposite the convex surface of the support plate.
  • the convex piece 1 further comprises, opposite its first convex surface 1a, a planar upper face. In the examples illustrated on the Figures 5 and 6 , the convex piece 1 further comprises, opposite its first convex surface 1a, a second convex surface 1b.
  • the convex piece 1 may have substantially the shape of a spherical cap.
  • the convex piece 1 may comprise two parts having substantially the shape of spherical caps or shells 10a, 10b. These parts are assembled together by a respective joining surface 12a, 12b of each shell 10a, 10b. Variations of shape of the convex part 1 are envisaged; for example, the convex piece 1 may be ovoidal or oblong.
  • the support apparatus 100 may further comprise a second support plate 2b placed on the convex part 1.
  • the second support plate 2b comprises a concavity 20b.
  • the second support plate 2b is then placed on the convex part 1 so that the convex surface 1b is located opposite the concavity 20b.
  • the support plate 2a, 2b comprises a block of homogeneous material, this block being able to have the shape of a substantially flat parallelepiped or a disk. As illustrated on Figures 2a, 2b and 2c a face 23a, 23b is optionally hollowed to form the concavity 20a, 20b. Another face 22a, 22b opposite the face 23a, 23b is preferably substantially flat.
  • the recess 4, 4a, 4b, 4c, 4d makes it possible to reduce, possibly in a very localized manner, the stiffness of the support plate. Therefore, said plate can be deformed more easily when the bearing device 100 is loaded.
  • the area of contact between the convex part 1 and the concavity 20a, 20b of the support plate 2a, 2b is increased and the load forces are more homogeneously distributed in the bearing device 100.
  • the overall variation in stiffness obtained thanks to the recess 4, 4a, 4b, 4c, 4d depends on the shape and the dimensions of this recess, but also on the stiffness, the shape and the dimensions of the block of homogeneous material constituting the recessed piece and possibly the stiffness, shape and dimensions of the blocks of homogeneous material constituting the other parts of the support apparatus 100.
  • the shape and the dimensions of the recess 4 can be chosen according to the stiffness of the sliding material 3 and the shape and dimensions of the layer of sliding material 3.
  • the shape of the recess 4, 4a, 4b, 4c, 4d is not particularly limited. However, shapes having axial symmetry are preferred in that the axis of symmetry of these shapes coincides with the median axis 11, 21a, 21b of the recessed part. Therefore, the recess can for example take (i) the shape of a cylindrical hole as illustrated on the Figures 2a, 2b and 2c (ii) the shape of a counterbore as illustrated on the Figures 3a and 3b as well as (iii) the shape of a hole made so that only the volume of an empty cylinder or ring is hollowed out.
  • the recess 4, 4a, 4b, 4c, 4d does not comprise protruding ridges on its walls and in its bottom in order to avoid the presence of preferential rupture zones of the recessed part.
  • a recess having the aforementioned forms as examples is preferred to a cubic recess.
  • each recess preferably comprises a gap between the bottom surface of the recess and its walls.
  • the fillet may be of constant curvature variation or constant radius.
  • the dimensions of the recess 4, 4a, 4b, 4c, 4d are limited by those of the recessed part.
  • the shape of the recess 4 may be cylindrical and the dimensions of this cylindrical shape may vary.
  • the recess 4 represented on the figure 2a does not have the same diameter as the recess 4 shown on the figure 2b
  • the recess 4 shown on the Figure 2c does not have the same depth as the recesses 4 represented on the Figures 2a and 2b .
  • the invention is not limited to a single recess 4 in the block of homogeneous material of a part of the support apparatus 100. Indeed, and as illustrated in FIG. figure 5 a plurality of recesses 4a, 4b, 4c, 4d can also be made in at least one part of the support apparatus 100, in this case in the convex part 1.
  • the recesses of this plurality are then preferentially identical to each other, by their shape and their dimensions, and distributed symmetrically with respect to a median axis of the concavity or convexity of the part in question, in this case with respect to the axis 11.
  • each recess 4a, 4b, 4c, 4d is formed at the joining surface 12b of the shell 10b of the convex part 1.
  • other recesses may be formed at the surface of the 12a assembly of the shell 10a of the convex part 1.
  • These other recesses may be identical or not and located or not facing the recesses 4a, 4b, 4c, 4d shown.
  • the fact of making the recesses in one or the other or both of the joining surfaces 12a and 12b of the convex part 1 induces that these recesses, if they are not through, do not does not modify the convex surfaces 1a and 1b of the convex part 1. This avoids the presence on these surfaces of protruding ridges that can abrade the sliding material lining during relative movements of the convex part 1 and of the support plate 2a, 2b.
  • At least one recess 4 is filled with a filling material 5.
  • a filling material 5 it is preferred, for example, to maintain symmetry, that the same filling material is used to fill all the recesses of the plurality.
  • the filling material 5 may have a stiffness lower than the stiffness of the homogeneous material of the block.
  • the filling material 5 may more particularly be selected from aluminum, possibly pure, bronze and ultra high performance fiber concrete, optionally baked so as to limit the endogenous shrinkage.
  • the filler 5 fills the recesses opening at said contact surfaces at least up to flush the face of the hollowed out part.
  • the apparent surface state of the filler material may more particularly be rectified, if necessary by machining, and more particularly so as to restore, to the hollow homogeneous material block, its shape and its dimensions before recess.
  • Each recess can also be through. It is then preferably filled so as to avoid the presence of protruding ridges that can abrade the sliding material lining during relative movements of the convex part 1 and the support plate 2a, 2b. Within this limit, the filling of the recess with the filling material 5 may not be complete.
  • the choice of the filling material and the partial or total filling of the recess makes it possible to obtain a continuous variation in the stiffness of the recessed part over a wider range of values than the only characteristics of the recess. shape and dimensions of this recess.
  • the bearing device 100 advantageously makes it possible to finely control the stiffness of each force transmission part 1, 2a, 2b in order to limit or even avoid the presence in charge of a stress concentration zone. in the rooms.
  • the load is thus better distributed in the support apparatus 100 and the sizing constraints of the support apparatus are relaxed.
  • the proposed solution offers an alternative to the one that, for many years, consists of developing new materials, in order to provide satisfactory support devices in terms of stress smoothing and in terms of dimensioning.
  • these solutions are advantageously complementary to each other.

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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)
  • Sliding-Contact Bearings (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • General Engineering & Computer Science (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Support Of The Bearing (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Jigs For Machine Tools (AREA)
EP14152943.8A 2014-01-28 2014-01-28 Auflager mit kontrollierter Steifigkeit Not-in-force EP2899334B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES14152943.8T ES2603954T3 (es) 2014-01-28 2014-01-28 Aparato de apoyo con rigidez controlada
EP14152943.8A EP2899334B1 (de) 2014-01-28 2014-01-28 Auflager mit kontrollierter Steifigkeit
EP15710721.0A EP3099868B1 (de) 2014-01-28 2015-01-28 Auflager mit kontrollierter steifigkeit
KR1020167023228A KR20160114113A (ko) 2014-01-28 2015-01-28 제어된 강성을 가지는 지지 장치
JP2016548688A JP2017510760A (ja) 2014-01-28 2015-01-28 制御した剛性を有する支持デバイス
TR2018/07331T TR201807331T4 (tr) 2014-01-28 2015-01-28 Kontrollü sertliğe sahip mesnet aparatı.
PCT/EP2015/051740 WO2015114024A1 (fr) 2014-01-28 2015-01-28 Appareil d'appui à raideur contrôlée
US15/114,693 US20160348389A1 (en) 2014-01-28 2015-01-28 Support device with controlled stiffness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14152943.8A EP2899334B1 (de) 2014-01-28 2014-01-28 Auflager mit kontrollierter Steifigkeit

Publications (2)

Publication Number Publication Date
EP2899334A1 true EP2899334A1 (de) 2015-07-29
EP2899334B1 EP2899334B1 (de) 2016-08-31

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ID=50028833

Family Applications (2)

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EP14152943.8A Not-in-force EP2899334B1 (de) 2014-01-28 2014-01-28 Auflager mit kontrollierter Steifigkeit
EP15710721.0A Active EP3099868B1 (de) 2014-01-28 2015-01-28 Auflager mit kontrollierter steifigkeit

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15710721.0A Active EP3099868B1 (de) 2014-01-28 2015-01-28 Auflager mit kontrollierter steifigkeit

Country Status (7)

Country Link
US (1) US20160348389A1 (de)
EP (2) EP2899334B1 (de)
JP (1) JP2017510760A (de)
KR (1) KR20160114113A (de)
ES (1) ES2603954T3 (de)
TR (1) TR201807331T4 (de)
WO (1) WO2015114024A1 (de)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN107761554A (zh) * 2017-10-24 2018-03-06 镇江市建成电器有限公司 一种桥梁支座高耐蚀整体球冠衬板
CN108951876A (zh) * 2018-08-24 2018-12-07 张惠奇 一种耐腐蚀合金球型支座
CN109930477A (zh) * 2019-03-20 2019-06-25 中交武汉港湾工程设计研究院有限公司 一种梁式桥摩擦摆支座快速选型的方法
US11421435B2 (en) * 2018-12-12 2022-08-23 Universidad Catolica De La Santisima Concepcion Kinematic seismic isolation device

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KR101737347B1 (ko) * 2017-01-10 2017-05-18 김흥열 면진장치
DE102017202317B4 (de) 2017-02-14 2021-05-27 Maurer Söhne Engineering GmbH & Co. KG Gleitpendellager und Bemessungsverfahren für ein solches
EA038795B1 (ru) * 2020-09-09 2021-10-20 Ровшан Агарза оглы Рзаев Фундамент сейсмостойкого здания
EA038830B1 (ru) * 2020-09-09 2021-10-26 Ровшан Агарза оглы Рзаев Сейсмостойкий фундамент

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Publication number Priority date Publication date Assignee Title
FR1398214A (fr) * 1964-05-06 1965-05-07 Glacier Co Ltd Appui capable de supporter des charges verticales
GB1042397A (en) * 1964-08-11 1966-09-14 P S C Equipment Ltd Improvements in bearings for bridges and like structures
EP0943736A2 (de) * 1998-03-17 1999-09-22 Bouwdienst Rijkswaterstaat Lager
US20010046416A1 (en) * 2000-04-10 2001-11-29 Hideyuki Mano Stress transmission device, and structure and method of constructing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107761554A (zh) * 2017-10-24 2018-03-06 镇江市建成电器有限公司 一种桥梁支座高耐蚀整体球冠衬板
CN108951876A (zh) * 2018-08-24 2018-12-07 张惠奇 一种耐腐蚀合金球型支座
US11421435B2 (en) * 2018-12-12 2022-08-23 Universidad Catolica De La Santisima Concepcion Kinematic seismic isolation device
CN109930477A (zh) * 2019-03-20 2019-06-25 中交武汉港湾工程设计研究院有限公司 一种梁式桥摩擦摆支座快速选型的方法

Also Published As

Publication number Publication date
US20160348389A1 (en) 2016-12-01
TR201807331T4 (tr) 2018-06-21
KR20160114113A (ko) 2016-10-04
EP3099868B1 (de) 2018-02-28
ES2603954T3 (es) 2017-03-02
EP3099868A1 (de) 2016-12-07
EP2899334B1 (de) 2016-08-31
JP2017510760A (ja) 2017-04-13
WO2015114024A1 (fr) 2015-08-06

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