ARCH-TYPE DECK BRIDGE AND METHOD FOR ITS MANUFACTURE Russian patent published in 2001 - IPC

FIELD: bridge engineering. SUBSTANCE: bridge has foundation, arch structure made of semi-arch blocks with fastening members on foundation and embedding items, above-the-arch structure made in the form of ring walls, and ground backing. Novelty is that each block of semi-arches is made for its turn and fixation in the process of mounting relative to foundation which is provided with stop; internal lower ledge of semi-arch block engageable with foundation is made in the form of cylindrical surface; mounting clearance is provided in lock part of semi-arches whose ends are spigoted in position. Novelty is that before final joining of semi-arch blocks to foundation their ends are brought at spigoted joint to design value by turning semi-arch block on cylindrical surface of its lower ledge followed by bolting semi-arch abutment to foundation bracket, aligning semi-arch block ends at spigoted joint of overhead mounting cross-piece, and fixing semi-arch block ends together at spigoted joint. EFFECT: reduced labor consumption; enhanced precision of bridge mounting. 17 cl, 7 dwg