FR3096382B1 - Method of strengthening a structure. - Google Patents

Method of strengthening a structure. Download PDF

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Publication number
FR3096382B1
FR3096382B1 FR1905409A FR1905409A FR3096382B1 FR 3096382 B1 FR3096382 B1 FR 3096382B1 FR 1905409 A FR1905409 A FR 1905409A FR 1905409 A FR1905409 A FR 1905409A FR 3096382 B1 FR3096382 B1 FR 3096382B1
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FR
France
Prior art keywords
strengthening
frame
initial configuration
configuration
reinforcement
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.)
Active
Application number
FR1905409A
Other languages
French (fr)
Other versions
FR3096382A1 (en
Inventor
Christian Tourneur
Julien Mercier
Philippe Salmon
Bernard Basile
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
Application filed by Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Priority to FR1905409A priority Critical patent/FR3096382B1/en
Priority to PCT/EP2020/064049 priority patent/WO2020234341A1/en
Publication of FR3096382A1 publication Critical patent/FR3096382A1/en
Application granted granted Critical
Publication of FR3096382B1 publication Critical patent/FR3096382B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/01—Shape memory effect
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

Procédé de renforcement d’une structure Procédé de renforcement d’une structure (10) comportant un matériau cimentaire (14), le procédé comportant les étapes consistant à : a) placer, dans une saignée (30) réalisée dans la structure (10), au moins une armature à mémoire de forme (40) réalisée dans un matériau pouvant passer d’une configuration initiale à une configuration étirée, puis reprendre la configuration initiale en étant porté depuis la température ambiante à une température suffisante, de préférence comprise entre 160 et 300°C, b) l’armature (40) étant dans sa configuration étirée, ancrer les extrémités (41) de l’armature (40) sur la structure (10) tout en laissant une portion libre (42) de l’armature (40) sans adhérence à la structure (10) au sein de la saignée (30), c) élever la température, au moins de la portion libre (42), à une valeur, de préférence comprise entre 160 et 300°C pour provoquer le retour de l’armature (40) vers sa configuration initiale et générer une précontrainte dans la structure (10). Figure pour l’abrégé : Fig.7Method for strengthening a structure Method for strengthening a structure (10) comprising a cementitious material (14), the method comprising the steps of: a) placing, in a groove (30) made in the structure (10) , at least one shape memory frame (40) made of a material that can go from an initial configuration to a stretched configuration, then resume the initial configuration by being brought from room temperature to a sufficient temperature, preferably between 160 and 300 ° C, b) the frame (40) being in its stretched configuration, anchoring the ends (41) of the frame (40) to the structure (10) while leaving a free portion (42) of the reinforcement (40) without adhesion to the structure (10) within the groove (30), c) raising the temperature, at least of the free portion (42), to a value, preferably between 160 and 300 ° C to cause the reinforcement (40) to return to its initial configuration and generate a preco stress in the structure (10). Figure for the abstract: Fig. 7

FR1905409A 2019-05-23 2019-05-23 Method of strengthening a structure. Active FR3096382B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1905409A FR3096382B1 (en) 2019-05-23 2019-05-23 Method of strengthening a structure.
PCT/EP2020/064049 WO2020234341A1 (en) 2019-05-23 2020-05-20 Method for reinforcing a structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1905409 2019-05-23
FR1905409A FR3096382B1 (en) 2019-05-23 2019-05-23 Method of strengthening a structure.

Publications (2)

Publication Number Publication Date
FR3096382A1 FR3096382A1 (en) 2020-11-27
FR3096382B1 true FR3096382B1 (en) 2021-05-21

Family

ID=68806827

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1905409A Active FR3096382B1 (en) 2019-05-23 2019-05-23 Method of strengthening a structure.

Country Status (2)

Country Link
FR (1) FR3096382B1 (en)
WO (1) WO2020234341A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115182616A (en) * 2022-08-08 2022-10-14 甘肃建投建设有限公司 FRP (fiber reinforced plastic) rib bending-resistant reinforcing method suitable for reinforced concrete cantilever plate

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4922723B2 (en) * 2006-10-11 2012-04-25 株式会社竹中工務店 Reinforcement method for wooden building structural materials
CH700733B1 (en) * 2008-01-28 2010-10-15 Josef Scherer Mechanical Endverankerungselement for reinforcing laminates to structures.
EP2141251B1 (en) 2008-06-25 2016-12-28 EMPA Dübendorf Shape memory alloys based on iron, manganese and silicon
CH707301B1 (en) * 2013-04-08 2014-06-13 Empa Method for creating prestressed concrete structures by means of profiles of a shape memory alloy and structure, produced by the process.
WO2016005941A1 (en) * 2014-07-09 2016-01-14 Faculdade De Ciências E Tecnologia Da Universidade Nova De Lisboa Structural strengthening system with internally anchored reinforcements by adherence

Also Published As

Publication number Publication date
FR3096382A1 (en) 2020-11-27
WO2020234341A1 (en) 2020-11-26

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