Incremental launching method for mounting road- and railway bridges with beam cross section, involves providing two steel main girders and carriageway slab made from steel, reinforced concrete or prestressed concrete

摘要

The incremental launching method involves providing two steel main girders (3) and a carriageway slab (4) made from steel, reinforced concrete or prestressed concrete. The maximum projection length of the bridge superstructure is reduced in mounting condition around the two-fold value of the distance (17) of the axis of a thrust bearing (9) from a pillar axis (19) with the help of a concrete supporting structure (2). The concrete supporting structure runs between the both main girders and above the carriageway slab.