Method and arrangement for anchoring an object to a support structure

An arrangement for anchoring an object to a support structure having an anchoring hole, comprising an anchoring element including an anchoring member of transverse dimensions smaller than, and a cap member of transverse dimensions substantially corresponding to those of the anchoring hole, said anchoring member having a leading and a trailing end portion, an interior extending between said end portions, and an internal thread in said interior at said trailing end portion, said cap member externally embracing said trailing end portion of said anchoring member upon insertion of said anchoring element into the anchoring hole through an open end thereof so that said cap member supports said anchoring element at the open end of the anchoring hole with clearance between the latter and said anchoring member and closes the open end of the clearance;

• and means for filling the clearance with a body of hardenable material for the latter to harden in the clearance about said anchoring member to thereby anchor said anchoring element in the anchoring hole, including at least one flow-through passage passing through said leading end portion of said anchoring member between said interior of the latter and the clearance, shielding means adapted to communicate with said passage for introducing the hardenable material thereinto and through the same into the clearance and to shield said internal thread of said anchoring member from contact with the hardenable material, and venting means at said cap member communicating the clearance with the exterior of the support structure and operative for venting air which is present in the anchoring hole and displaced by the hardenable material as the clearance is filled with said body.