E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
E21D15/02—Non-telescopic props
E—FIXED CONSTRUCTIONS
E04—BUILDING
E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
E04C3/00—Structural elongated elements designed for load-supporting
E04C3/30—Columns; Pillars; Struts
E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
Procede permettant de realiser une liaison souple entre un corps metallique en forme de barre et une piece de maintien qu'il traverse et dispositif pour l'application du procede