Design of the Main Bridge of the Jinqiao Bridge in Wuhan Road

To probe into the structural features and key techniques of overpass and gradient width cable-stayed bridge,the design,calculation and analysis processes of the Jinqiao bridge in Wuhan road were summarized.The bridge is a prestressed concrete cable-stayed bridge with a single pylon and double cable plane.Its span arrangement is(138+ 81+41)m,deck width is 39~49.9mand structural system is the rigid fixity system of pylon,pier and girder.The pylon is the concrete structure that is 79.0mhigh,the stay cables are arranged in spatial cable plane of fan type.In the process of the design,the finite element software MIDAS was used to analyze the global force conditions of the bridge, the software ANSYS was used to calculate,analyze and optimize the local force behavior of anchor zone in pylon.The results indicate that the various checking calculation values of the strength and rigidity of the bridge can satisfy the relevant requirement in the codes.