Abstract:Liangjiang Bridge in Chishui City is an asymmetric cable-stayed arch composite bridge with a main span of 200 m to cross Chishui River. The bridge pylon without back cable is composed of concrete straight pylon and steel tube curved pylon. 9 stayed cables are anchored to the steel tube curved pylon. The arch rib is a half-through polynomial catenary hingeless cabas-type steel box arch. The section of the arch rib is 2 m wide and 3 m high. There are 22 pairs of booms. The vertical and horizontal beam system is adopted for the main girder. Its overall width is 26.6 m. The beam and the boom are arranged every 8 m at the same spacing. The results of spatial finite element calculation comprehensively reflect the stress characteristics and stress distributions of cable pylon, arch rib and main girder members.
