FIELD: construction. SUBSTANCE: junction of a ceramic shell with a metal frame in the shape of a hollow cylinder with an outer diameter smaller than the internal diameter of the ceramic shell, which are coaxially lapped. The frame is made of several cylindrical segments joined together by cylindrical segment overlapping inserts of a metal alloy with an increased thermal coefficient of linear expansion in comparison with the material of the frame. EFFECT: increasing the strength and rigidity of the structure.