Mechanical characteristics of multi-span concrete continuous girder oblique bridge based on ANSYS

Wan Ning

Southwest Jiaotong University-Emei, Sichuan,China, 614202

In order to adapt to environment and reduce the damage of construction for environment, the principle that environment adapts to construction is updated for bridge design, therefore lots special-shape bridges including oblique bridge emerge. However, there is no accurate and developed theory for computing the mechanical characteristics of oblique bridge. Generally, equivalent straight bridge is applied for computing. By performing finite element modelling, the internal force and displacement of oblique bridge and equivalent straight bridge with load were compared. The results showed that due to the special structure of oblique bridge, torque is generated under load, accompanying with coupling effect of bend-twist. Therefore, the mechanical characteristics analysis of straight bridge can not accurately explain that of oblique bridge.