EP 4071321 A1 20221012 - DEVICE AND METHOD FOR REINFORCING STRUCTURES WITH PRE-STRESSED FIBRE-REINFORCED-POLYMER LAMINATES
Title (en)
DEVICE AND METHOD FOR REINFORCING STRUCTURES WITH PRE-STRESSED FIBRE-REINFORCED-POLYMER LAMINATES
Title (de)
VORRICHTUNG UND VERFAHREN ZUR VERSTÄRKUNG VON STRUKTUREN MIT VORGESPANNTEN FASERVERSTÄRKTEN POLYMERLAMINATEN
Title (fr)
DISPOSITIF ET PROCÉDÉ POUR STRUCTURES DE RENFORCEMENT AVEC STRATIFIÉS DE POLYMÈRE RENFORCÉ DE FIBRES PRÉ-CONTRAINTS
Publication
Application
Priority
EP 21167213 A 20210407
Abstract (en)
This invention discloses a pre-stressing system for retrofitting of reinforced concrete members with externally bonded fibre-reinforced-polymer (FRP) laminates in bending. An FRP pre-stressing system includes a clamping unit (1), a light frame for hydraulic jack (2) and anchoring plates (3). The novel clamping unit (1) comprises tempered steel grips with corrugated gripping surfaces (4) which are tightened with high strength bolts (5) in a steel frame (6). This invention also discloses using the epoxy adhesive (8) on both upper and lower corrugated contact surfaces of the grips (4) and the FRP laminate (7) surface parts being clamped by said grips (4). The result is more effective clamping with very low slipping possibility. This invention provides retrofitting and reinforcement solutions for concrete slabs, wide beams, and also smaller beams, by using the threaded rods (10) and additional steel plates (11) instead of anchor bolts (9).
IPC 8 full level
E04G 23/02 (2006.01); E04C 5/12 (2006.01)
CPC (source: EP)
E04C 5/12 (2013.01); E04C 5/127 (2013.01); E04G 23/0218 (2013.01); E04G 2023/0259 (2013.01); E04G 2023/0262 (2013.01)
Citation (applicant)
- CN 208578344 U 20190305 - SHANXI TRANSP RESEARCH INST, et al
- CN 104895251 A 20150909 - UNIV WUYI
- CN 1699710 A 20051123 - SINOMA SCIENCE & TECHNOLOGY CO [CN]
- EP 2631392 A1 20130828 - SIKA TECHNOLOGY AG [CH]
- EP 2088259 B1 20111012 - SCHERER JOSEF [CH]
- EP 2088259 A1 20090812 - S & P CLEVER REINFORCEMENT COM [CH]
Citation (search report)
- [AD] EP 2088259 A1 20090812 - S & P CLEVER REINFORCEMENT COM [CH]
- [A] EP 2083133 A2 20090729 - S & P CLEVER REINFORCEMENT COM [CH]
- [A] CN 201778500 U 20110330 - UNIV HEFEI TECHNOLOGY
- [A] JP 4004616 B2 20071107
- [A] KR 20060060935 A 20060607 - KOREA INST CONSTRUCTION TECH [KR]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 21167213 A 20210407