(19)

(11)

EP 3 610 093 A1

(12)

(43) Date of publication: 19.02.2020 Bulletin 2020/08 (21) Application number: 17729190.3 (22) Date of filing: 14.04.2017

(51) International Patent Classification (IPC):  E04C 5/12(2006.01) E21D 21/00(2006.01) E02D 5/80(2006.01) F16G 11/02(2006.01) (86) International application number: PCT/IB2017/000598 (87) International publication number: WO 2018/189565 (18.10.2018 Gazette 2018/42)

(84) Designated Contracting States: 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 States: BA ME Designated Validation States: MA MD (71) Applicant: Soletanche Freyssinet 92500 Rueil Malmaison (FR)	(72) Inventors: MONBALLIU, Michel Rene Hong Kong (HK) TANG, Hong Shing Hong Kong (HK) (74) Representative: Plasseraud IP  66, rue de la Chaussée d'Antin 75440 Paris Cedex 09 75440 Paris Cedex 09 (FR)