Method for three-dimensional weaving of a fibrous structure with orientation of weft columns in a deployment portion and resulting fibrous structure

A method for three-dimensional weaving in one piece of a fibrous structure between a plurality of layers of warp yarns and a plurality of layers of weft yarns, the warp yarns extending in a longitudinal direction corresponding to a direction of travel of said warp yarns, the weft yarns extending in a transverse direction, the weft yarns being introduced from a creation of a shed, the weft yarns being woven in a plurality of columns spaced apart from one another in the longitudinal direction, each weft yarn column being positioned against a fell of the fibrous structure, the weft yarns of each weft yarn column being juxtaposed in the thickness of the fibrous structure in a stacking direction, the method comprising weaving at least one deployment portion in the fibrous structure, said at least one deployment portion being interwoven with one or more adjacent portions of the fibrous structure, the weft yarns of the weft yarn columns of the one or more adjacent portion(s) being juxtaposed in a first stacking direction perpendicular to the longitudinal direction,

• wherein, during the weaving of said at least one deployment portion, the weft yarns of each weft yarn column are juxtaposed in a second stacking direction different from the first stacking direction.