| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to position-changing bridges can be used as a pedestrian bridge on rivers with a narrow riverbed. Invention aims at providing cleaning of bottom of navigable span of bridge from bottom silt and other contaminants. Bridge comprises a coastal support and at least one bridge span in form of an arch connected with a bridge drive mechanism. Counterweights are attached to ends of arch.EFFECT: bridge drive mechanism provides its turning by 180 or 360 degrees.1 cl, 2 dwg |
