The invention provides a steel and wood combined
box girder which comprises a CLT
bridge deck slab, a steel and wood combined
box girder block, steel webs, CLT edge webs, screws, H-shaped steel,
flange plates and bolts. Bolt holes are formed in the CLT
bridge deck slab, the H-shaped steel and the
flange plates, the CLT
bridge deck slab and the
flange plates are in
lap joint with the internal portions of H-shaped steel grooves and are anchored through the bolts; the CLT bridge
deck slab and the CLT edge webs are connected through the screws, the CLT edge webs and the steel and wood combined boxgirder block are bonded through E1-level phenolic glue, the lower portion of the CLT bridge
deck slab and the upper portion of the steel and wood combined
box girder block are bonded through the E1-level phenolic glue, and the steel webs and the steel and wood combined box girder block are connected together in a welded mode; and the steel and wood combined box girder block is composed of multiple specially-shaped
steel plates and thin, long and narrow beams, and the two ends of each specially-shaped steel plate are bonded to the edges of the up-down-staggered thin, long and narrow beams through the E1-level phenolic glue. The single-box multi-room space box girder is composed of the CLT bridge
deck slab, the steel and wood combined box girder block, the steel webs and the CLT edge webs,the advantages of steel and wood combination are fully used, and the box girder is good in flexural performance and torsional performance and suitable for large-span light traffic bridges for pedestrians, motorcycles and the like.