Little unit assembly's of merogenesis section steel case bridge

The utility model provides a little unit assembly's of merogenesis section steel case bridge, divide a steel case bridge into the section of a plurality of festivals that can splice each other, each festival section is including steel bridge bottom plate unit spare (1), bridge roof unit spare (2), assemble in the oblique web unit spare in bridge limit (3a) of bridge bottom plate unit spare and bridge roof unit spare both sides, assemble in between bridge bottom plate unit spare and the bridge roof unit spare and be arranged in the bridge web unit spare (3) of a set of equipartition between theoblique web unit spare in both sides bridge limit, baffle unit spare (4a) in transversely assembling in the middle of the bridge of a set of equipartition between the web unit spare in adjacent bridge, transversely assemble in the bridge limit of a set of equipartition between the oblique web unit spare of web unit spare and bridge limit in the bridge baffle unit spare (4), splice in the obliqueweb unit spare in the brid