Static Analysis And Local Stress Analysis Of Hybrid Girder Cable-Stayed Bridge

With the continuous development and progress of the bridge construction, hybrid girder cable-stayed bridge with its reasonable mechanical properties and good economy to be more and more widely applied. Firstly, an introductory review of the development at home and abroad as well as the structure and force characteristics of the hybrid girder cable-stayed bridge is summarized, afterwards analysis and research in regard to the bridge are developed from two pairs:full-bridge analysis and local analysis. In the first part, based on the design of Edong Yangtze river Bridge, Hubei, a finite element model for full-bridge is established by the professional computing software MIDAS/CIVIL; The force and deformation of the bridge in the all construction stages are calculated and analyzed; Moreover, the structural behaviors under individual loads of operational phase and their combinations are analyzed sufficiently. In the second part, a space finite element model for steel-concrete joint section is established by the finite element software ANSYS; According to the internal forces resulting from the operational phase of the bridge, the stress and its distribution of steel-concrete joint section under the most adverse load operating conditions is analyzed in detail, thus, the security and rationality of design are checked. Finally, deviation analysis for the finite element model of steel-concrete joint section is conducted and a more perfect simulation method is put forward accordingly. This thesis contains only part of the hybrid girder cable-stayed bridge research, further study of the kind of bridge has important practical significance.