Centering and coupling elements, for tubbing ring construction, engage and deform toothed structure of raised parts formed on raised flanks or depressed walls on ends sides of tubbings

摘要

The tubbings have raised flanks or depressed walls on their end sides (4), which can be joined together by engaging the flanks with the walls. At least one area of a tooth structure is formed with a number of raised parts at the flanks or the walls, which is deformed by engaging the centering and coupling elements (5). The tooth structure area is preferably in one piece with the flanks or the walls.