FIELD: construction.
SUBSTANCE: invention relates to construction of small and medium bridges, overpasses, namely, to span structures. In span structure, comprising longitudinal beams and upper reinforced concrete part, lengthwise beams are made with pipe-concrete ones, on which the upper reinforced concrete part is installed in the form of a box-shaped metal base made with longitudinal cuts for the upper part of longitudinal beams fixed to them with welding and filled with reinforced concrete; in the area of contact with supports to the lower part of the longitudinal beams, metal plates are welded; reinforced concrete part includes fibre concrete; longitudinal beams can be made with pipe-concrete prestressed ones; longitudinal beams can be made with location of concrete core in upper part of inner volume of pipe, and rigid steel elements in lower part; at box metal base sections between arched elements can also be arched; it can be modular, consisting of mounting blocks with at least one beam.
EFFECT: technical result is higher non-carrying capacity of span.
1 cl, 4 dwg
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