WOOD-CONCRETE SPAN WITH COMPOSITE GIRDERS FROM BARS AND REINFORCED CONCRETE SLAB Russian patent published in 2022 - IPC E01D2/00 

FIELD: construction.

SUBSTANCE: invention relates to construction of bridges with wood-concrete spans. Span structure is made of multi-tier girders combined with cross braces and installed on supports taking into account transverse slope, combined with monolithic reinforced concrete slab with waterproofing device and driving bed. Multilevel girders are composed of logs edged on four edges, tightly laid on each other and joined to each other along side planes by paired steel pads, dowels and bolts both in places of transverse joints, and along longitudinal seams. For joint operation of composite girders with monolithic reinforced concrete slab, upper bars of girders are equipped with bolted to them and steel paired pads with comb-like projections and flexible stops distributed with a certain interval along the span length.

EFFECT: increasing load-carrying capacity of wood-concrete span structures with composite girders from logs, reducing material consumption and labour intensity of their manufacture and installation, increasing durability and operational reliability of bridges with wood-concrete span structures.

1 cl, 4 dwg