REINFORCED CONCRETE SUPERSTRUCTURE OF BRIDGE Russian patent published in 1999 - IPC

FIELD: bridge building technology. SUBSTANCE: reinforced concrete superstructure of bridge incorporates rib in its cross-section. Also provided are carriage way slab and carriage way pavement. Made in end-face part of rib and slab are spreads in the form of trapezium. Internal base of each trapezium is located at point of bending of rib or slab and it is oriented perpendicularly to axis of rib or slab. Dimension of internal base of rib or slab is equal to thickness δ of main part of aforesaid components. Dimension of second external base b of trapezium is equal to height h of trapezium and is determined from following expression b = h = 2β±α, cm, where α ≤ 0,2δ, cm. Depending on design particularities of bridge superstructure, spreads in end-face part can be made both in rib and in slab simultaneously or can be made only in rib or only in slab. As to its configuration, trapezium can be equilateral or having unequal sides. Application of aforesaid embodiment of bridge superstructure ensures higher crack resistance and longer service life of superstructure. EFFECT: higher efficiency. 2 cl, 1 dwg