EP3073018A1 - Erdbebensicheres zugankersystem für die feste verbindung von betonfundamenten eines bauwerks - Google Patents

Erdbebensicheres zugankersystem für die feste verbindung von betonfundamenten eines bauwerks Download PDF

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Publication number
EP3073018A1
EP3073018A1 EP16162176.8A EP16162176A EP3073018A1 EP 3073018 A1 EP3073018 A1 EP 3073018A1 EP 16162176 A EP16162176 A EP 16162176A EP 3073018 A1 EP3073018 A1 EP 3073018A1
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EP
European Patent Office
Prior art keywords
geotechnical
bar
concrete
tie rod
foundation
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.)
Withdrawn
Application number
EP16162176.8A
Other languages
English (en)
French (fr)
Inventor
Jacques Rivoire
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3073018A1 publication Critical patent/EP3073018A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil

Definitions

  • the present invention relates to an anti-seismic pulling system for securing concrete foundations of a structure, such as an industrial building for example.
  • One of the aims of the invention is therefore to remedy these drawbacks by proposing an anti-seismic pulling system for the fastening of the concrete foundations of a structure that optimally responds to seismic standards, while being more solid, easier to implement, less restrictive, and lighter than those of the state of the art.
  • Another object of the invention is to provide such an anti-seismic pulling system which allows a final assembly and a perfect tensioning, made at the end of the earthworks and networks, without any hindrance for the machines carrying out earthworks and embankments for the building sites.
  • the anti-seismic tie rod system makes it possible to take up the tensile forces that could be experienced by a structure, such as an industrial building following an earthquake.
  • the implementation of a geotechnical bar makes it possible to lighten the system compared to conventional reinforced concrete rods of the prior art.
  • the geotechnical bar comprises a circular section provided with a helical alias which makes it advantageously screwable. Said geotechnical bar used is in particular devoid of longitudinal ribs.
  • the anti-seismic pulling system according to the invention is also advantageous in that it comprises a spherical nut capable of taking up the misalignment between the plate and the concrete foundation.
  • a spherical nut capable of taking up the misalignment between the plate and the concrete foundation.
  • said system comprises a counter plate, arranged at the first end the geotechnical bar, intended to support an inner face of the first concrete foundation to make a counter-support relative to the plate, and a counter-nut adapted to be screwed around the geotechnical bar to maintain said counterplate in support position.
  • the locknut is spherical to prevent the ball nut is placed in place of the locknut.
  • the anti-seismic tie rod system may comprise a plurality of geotechnical bars, and at least two, coupled through a sleeve held in position by means of two screwed spherical nuts. on either side of said sleeve.
  • the sleeve comprises means for centering the two geotechnical bars in the form of an orifice in the center of the sleeve receiving a screw forming a stop when the two geotechnical bars are inserted into said sleeve.
  • the anchoring means in the second concrete foundation is in the form of an anchor screwed to the second end of the geotechnical bar.
  • Said anchoring means may be made by the second end of the geotechnical bar divided into two parts extending in opposite directions, or folded to form a butt.
  • the geotechnical bars have undergone anti-corrosion treatment of the hot-dip galvanizing type, or electro-galvanizing, or lamellar galvanizing.
  • the geotechnical bar or bars are inserted in plastic sheaths.
  • the invention relates to an anti-seismic pulling system (1) for joining at least two concrete foundations (2a, 2b) of a structure, such as an industrial building, to respond optimally to seismic standards, by taking again the efforts of compression-traction that could undergo this work following an earthquake.
  • first foundation (2a) of concrete comprising a through bore (3) with a second foundation (2b) of concrete, cast after the establishment of the pulling system (1) according to the invention.
  • the pulling system (1) in place is energized to allow the resumption of compression-traction forces between the two foundations (2a, 2b).
  • the pulling system (1) comprises a plurality of geotechnical bars (4), coupled to each other to adapt to the distance between the two foundations (2a, 2b) of concrete to be joined.
  • the geotechnical bars (4) are preferably high-adhesion steel bars of circular cross-section comprising a helical aliasing in the left-hand pitch.
  • the geotechnical bars (4) have no longitudinal ribs and have advantageously undergone anti-corrosion treatment such as hot-dip galvanizing, or electro-galvanizing, or lamellar zinc coating.
  • the geotechnical bars (4) used are bars known under the name "GEWI” (registered trademark), type "B500B", 32 millimeters in diameter.
  • Said geotechnical bars (4) used are, of course, certified by an official body capable of certifying concrete reinforcements and issuing certificates of conformity, such as AFCAB, for example.
  • said geotechnical bars (4) are joined together by means of sleeves (6) making it possible to ensure the seismic mechanical continuity along said geotechnical bars ( 4).
  • Said sleeves (6) are held in position by means of two spherical nuts (6a) screwed on either side of the sleeves (6).
  • the spherical part of the nuts (6a) is in support against the sleeve (6).
  • the two geotechnical bars (4) are inserted in the sleeve (6) centrally.
  • each sleeve (6) comprises an orifice (7) formed in the center of the sleeve (6), which orifice (7) receives a screw projecting inside the sleeve (6) to form a stop during inserting the two geotechnical bars (4) into said sleeve (6).
  • the two geotechnical bars (4) are inserted into the sleeve (6) to the stop, guaranteeing a simple, fast and optimal centering.
  • the spherical nuts (6a) are then screwed to secure the plurality of geotechnical bars (4) and make monobloc sleeve.
  • a spherical counter-nut (8) is then screwed to a first end (9) of the plurality of geotechnical bars (4), the spherical head of said counter-nut (8) is turned towards said first end (9).
  • the counter-nut (8) is screwed onto the bar (4) until a sufficient distance is left for the insertion of the plurality of geotechnical bars (4) through the bore (3) of the first foundation (2a). ).
  • a counter-plate (10) is inserted around the first end (9) of the plurality of geotechnical bars (4) until it abuts against the spherical counter-nut (8).
  • said first end (9) of the plurality of spliced geotechnical bars (4) is inserted into the through bore (3) of the first foundation (2a), and held in position by the insertion around said first end (9), a plate (11), and by screwing a spherical nut (12) for locking in position.
  • the spherical nut (12) arranged at the first end (9) of the plurality of geotechnical bars (4) is tightened to hold the plate (11) against the outer face of the first foundation (2a).
  • the spherical counter nut (8) is then tightened to lock the assembly and tension the pulling system (1) according to the invention. Tightening the lock nut spherical (8) allows to maintain the against-plate (10) bearing against the inner face of the first foundation (2a).
  • the pulling system (1) is in place, it is now necessary to pour the second foundation (2b) to embed a second end (13) of the plurality of geotechnical bar (4).
  • this second end (13) comprises anchoring means in the form of an anchor (14) screwed to said second end (13) of the geotechnical bar.
  • said anchoring means may be formed by the second end (13) of the plurality of folded geotechnical bars (4) to form a butt (15), or with reference to the figure 3 divided into two parts (15) extending in opposite directions.
  • the pulling system (1) plays its role and secures the two foundations (2a, 2b) between them to resume the tensile stresses that could undergo the structure following an earthquake.
  • the transfers of forces and loads are efficiently distributed along the geotechnical bars (4) to optimally meet the seismic standards.
  • the loads are ideally distributed, the geotechnical bars (4) have dimensions reduced compared to tie rods of the state of the art, especially in terms of diameter for equivalent load recovery.
  • the pulling system (1) according to the invention is lighter, less constraining to implement, and less cumbersome than those of the state of the art, which facilitates the passage of the networks during a construction site.
  • the invention provides anti-seismic pulling system (1) for securing concrete foundations (2a, 2b) of a structure that optimally responds to seismic standards.
  • This new assembly is, moreover, easier to implement, less restrictive, and lighter than those of the state of the art.
  • the invention provides such an anti-seismic pulling system (1) whose final assembly and perfect tensioning are performed at the end of the earthworks and networks, without any hindrance to the equipment performing earthworks, backfilling for construction sites.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
EP16162176.8A 2015-03-25 2016-03-24 Erdbebensicheres zugankersystem für die feste verbindung von betonfundamenten eines bauwerks Withdrawn EP3073018A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1552521A FR3034115B1 (fr) 2015-03-25 2015-03-25 Systeme de tirant antisismique pour la solidarisation des fondations en beton d'un ouvrage

Publications (1)

Publication Number Publication Date
EP3073018A1 true EP3073018A1 (de) 2016-09-28

Family

ID=53274637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16162176.8A Withdrawn EP3073018A1 (de) 2015-03-25 2016-03-24 Erdbebensicheres zugankersystem für die feste verbindung von betonfundamenten eines bauwerks

Country Status (2)

Country Link
EP (1) EP3073018A1 (de)
FR (1) FR3034115B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114892501A (zh) * 2022-05-28 2022-08-12 中铁二十一局集团第四工程有限公司 组合式抗震拉杆及其施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1197548A (fr) * 1957-07-10 1959-12-01 Raccord pour barres en acier destinées à armer et à mettre le béton sous contrainte
FR2686356A1 (fr) * 1992-01-22 1993-07-23 Freyssinet Int & Co Perfectionnements aux procedes et dispositifs de reprise des fondations en sous-óoeuvre et aux fondations ainsi obtenues.
WO2014191648A1 (fr) * 2013-05-29 2014-12-04 Magnetude Barre d'armature à haute adhérence pour béton armé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1197548A (fr) * 1957-07-10 1959-12-01 Raccord pour barres en acier destinées à armer et à mettre le béton sous contrainte
FR2686356A1 (fr) * 1992-01-22 1993-07-23 Freyssinet Int & Co Perfectionnements aux procedes et dispositifs de reprise des fondations en sous-óoeuvre et aux fondations ainsi obtenues.
WO2014191648A1 (fr) * 2013-05-29 2014-12-04 Magnetude Barre d'armature à haute adhérence pour béton armé

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114892501A (zh) * 2022-05-28 2022-08-12 中铁二十一局集团第四工程有限公司 组合式抗震拉杆及其施工方法

Also Published As

Publication number Publication date
FR3034115B1 (fr) 2017-05-05
FR3034115A1 (fr) 2016-09-30

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