DEVICE FOR PERFORMING A SINKING OF CONCRETE CYLIND RIQUE CONCRETE ON SITE, DURING THE DIGGING OF UNDERGROUND STRUCTURES, IN PARTICULAR USING THE METHOD OF DIGGING WITH A SHIELD OR A SHIELD KNIFE

摘要

The invention relates to an arrangement for producing a cylindrical cast-in-situ concrete lining during the driving of underground structures, such as in particular tunnels, galleries, pipe ducts and the like, in particular by the shield or cutter-shield driving method, with an inner formwork (16) forming the formwork space and an annular end formwork (12) which closes the formwork space at the front end and can be advanced in the driving direction. In order to be able to continuously concrete the cylindrical cast-in-situ concrete lining (15), the end formwork (12) can be rotated about the structure axis. At the same time, it has a helicoidal surface at its end face (30) facing the cast-in-situ concrete lining (15). When the end formwork (12) rotates, the cast-in-situ concrete can be placed continuously in the gap spaces opening between the helicoidal surface of the end formwork and the completed concrete lining, so that the cast-in-situ concrete lining is continuously produced in accordance with the driving of the structure while the end formwork is constantly supported against concrete areas already hardened. IMAGE