A prefabricated building structure, comprising: - a first and a second pillar (21, 22) reciprocally stacked and having a preponderant longitudinal extension direction; an upper end of the first pillar being located at a lower end of the second pillar; - a beam extending substantially horizontally and having a first end located at said upper end and said lower end; - reciprocal fixing means for reciprocally fixing the first pillar, the second pillar and the beam; said reciprocal fixing means being able to be at least partly incorporated in the first pillar, in the second pillar, in the beam; the reciprocal fixing means comprising projecting means and corresponding housing means in which the projecting means fits defining a joint; said projecting means and said housing means defining male-female connections both between the first pillar and the beam and between the second pillar and the beam; characterised in that: - the structure comprises enveloping means which compresses the first pillar along the preponderant longitudinal extension direction; the enveloping means exerting a post compression by winding; the enveloping means comprising a fibre-resin structure; - the first pillar, the second pillar and the horizontal beam are dry-connected without welds and without connection casts. - a first and a second pillar (21, 22) reciprocally stacked and having a preponderant longitudinal extension direction; an upper end of the first pillar being located at a lower end of the second pillar; - a beam extending substantially horizontally and having a first end located at said upper end and said lower end; - reciprocal fixing means for reciprocally fixing the first pillar, the second pillar and the beam; said reciprocal fixing means being able to be at least partly incorporated in the first pillar, in the second pillar, in the beam; - a beam extending substantially horizontally and having a first end located at said upper end and said lower end; - reciprocal fixing means for reciprocally fixing the first pillar, the second pillar and the beam; said reciprocal fixing means being able to be at least partly incorporated in the first pillar, in the second pillar, in the beam; the reciprocal fixing means comprising projecting means and corresponding housing means in which the projecting means fits defining a joint; said projecting means and said housing means defining male-female connections both between the first pillar and the beam and between the second pillar and the beam; characterised in that: - the structure comprises enveloping means which compresses the first pillar along the preponderant longitudinal extension direction; the enveloping means exerting a post compression by winding; the enveloping means comprising a fibre-resin structure; - the first pillar, the second pillar and the horizontal beam are dry-connected without welds and without connection casts. - the structure comprises enveloping means which compresses the first pillar along the preponderant longitudinal extension direction; the enveloping means exerting a post compression by winding; the enveloping means comprising a fibre-resin structure; - the first pillar, the second pillar and the horizontal beam are dry-connected without welds and without connection casts.