Method for the construction of civil engineering constructions under railway tracks in use

摘要

This method consists in constructing civil engineering constructions under railway tracks in use without the use of temporary bridges generating significant and expensive disturbances. The supports of the floors consist of gantry supports. In order to eliminate the construction of wing (aisle) or return walls, an access bay is added on either side of the bay or bays necessary for uncovering the template. These various supports are characterised in that their geometry in the form of a gantry support allows construction below the railway tracks without significant impact on the rail traffic. In fact, the uprights of the bearing gantries are columns sunk or cut in on either side of the railway track or tracks, the crosspiece being either manufactured in place protected from the track support, or prefabricated and fitted in place using the track support, or prefabricated and positioned with a crane with interruption of the traffic on the track or tracks. The floor or floors are then prefabricated on either side of the tracks and positioned by sideways insertion. IMAGE