| 摘要 |
This invention relates to a bridge comprising a ramp intended to be fastened at the shore of a water-coarse and a plurality of units attached to this one, each of the units comprising longitudinal supporting beams and a bridge deck resting on these ones, the unit being intended to be carried by carrying poles. According to the invention each unit (2, 3, 4) has a device (7), which functions as a float for the unit when it is empty, and which functions as ballast for the carrying poles (5, 6) when it is filled with a medium or a material, and each unit (2, 3, 4) is further provided with means (22-25), which are pivotable and lockable in relation to the unit and which are intended to cooperate with the carrying poles (5, 6). |
