BRIDGE SPAN STRUCTURE ERECTION METHOD Russian patent published in 2006 - IPC E01D2/00 E01D12/00 

FIELD: building, particularly to erect small-scale and medium-scale bridges over rivers, rail roads, overpasses, to construct span sections of overpasses, trestles and floor structures.

SUBSTANCE: method for span structure erection by metal part mounting and by following reinforced concrete section connection involves mounting metal part of at least two mounting units, wherein each mounting unit is composed of two spaced apart metal main tubular beams so that distance between tubular beams is equal to tubular beam diameter and tubular beams are connected with each other by arch-shaped shell formed of tube half having diameter equal to tubular beam diameter, mounting units are connected with each other by two overlapped arch-shaped connection members extending along main beam sides; installing tension bars in each tubular beam; arranging transversal ties in each arch-shaped shell so that transversal ties and tension bars are arranged in horizontal planes, spaced apart along unit length and connected with each other in cross-section to create integral transversal links in the unit; installing stiffening members with central orifices inside each main beam; welding rod-like thrusts to upper mounting unit surface in staggered order; connecting mounting units with each other by overlapping two arch-shaped connection members one to another to create single arch-shaped shell having diameter equal to main beam tube diameter. Reinforced concrete section is solid.

EFFECT: simplified structure, reduced time of bridge erection in difficult-to-access areas.

3 cl, 10 dwg