WOOD-CONCRETE SPAN FROM PLANK-COBBLE-DOWEL-NAILING BLOCKS WITH REINFORCED CONCRETE PLATE, WHICH IS INCLUDED INTO JOINT OPERATION WITH BLOCKS

摘要

FIELD: construction.;SUBSTANCE: invention relates to construction and can be used in construction of bridges with wooden concrete span structures. Trough structure is composed of trough-shaped plank-cobble-dowel-nailing blocks installed on the transverse slope according to the diagram. Blocks are combined by a monolithic reinforced concrete slab with a waterproofing device and a sledge. Paired belt bars of upper belt are equipped with steel paired straps with comb ledges and flexible stops fixed to them on bolts and distributed with certain spacing length. In gaps between box units and outer side of extreme blocks there arranged is bottom of formwork of monolithic reinforced concrete plate with its subsequent concreting, by including jointed with wooden blocks, waterproofing device and driving canvas.;EFFECT: technical result is increase in load-carrying capacity of planking-nailing span structures, reduction of material consumption and labour intensity of their manufacturing and installation, increase of durability of bridges with nailing-nailing span structures.;1 cl, 5 dwg