method for the construction of an underground railway line crossing operation, for example an overpass and underpass

摘要

in the areas of corner of the intersection between the railway line and the future bridge, made of hot carrier (3).related to containment diaphragms (7) placed laterally to the future flights of the overpass.with a short interruption of the railway line, the section of the box lines in said cross and connect the load-bearing diaphragms of main beams (9, 109).cross the railway line and then set on these auxiliary beams (10, 110) parallel to the line and the carrier decks (12, 112) and on these components.properly bound, restore the continuity and functionality of the railway line.from the outside of the rail line between the opposed diaphragms pillars are implemented with the technique of micropalificazione, substantially vertical bulkhead (16 - 136).after that is the excavation of ramps and overpass, forming the base and bringing audiences on the surface gradually discovery of these bulkheads of micropali.a coating system and spritzbeton, then covered with a coating impermeabilizzante and back of concrete working in support of the main beams.