SUSPENSION BRIDGE Russian patent published in 1996 - IPC

FIELD: bridge building. SUBSTANCE: stiffening beam is combined of two middle parts two end pieces with middle parts having central disconnection joint. They are provided with rotary mechanism in vertical plane and immersed floatable supports symmetrically placed about bridge center and external and internal stands hinged to each end of stiffening beam. End and middle stiffening beam pieces are interconnected with hydraulic cylinders hinged to cantilevers rigidly secured to end and middle pieces of stiffening beam. Hydraulic cylinder fastening hinges are located over axis of rotary hinges of the middle parts. Spacing between rotation axes and internal stand fastening hinges is determined using presented function. EFFECT: high strength. 3 dwg