| Summary: | 碩士 === 國立中興大學 === 土木工程學系所 === 105 === There are so many hills and rivers in Taiwan that it is blessed with abundant ecological resources. For better environmental protection, many main road predominantly constructed on viaduct. Viaducts are usually prestressed concrete bridge and built by cantilever method. In this thesis, the study target was a curved viaduct, which assorted well with locally snaking terrain. Midas Civil, a software for structural analysis, was used to simulate its mechanical behavior due to self-weight and prestress.
Firstly, Midas Civil was used to build models for the study bridge, then the model was used to analyze the mechanical behavior due to self-weight and prestress. Next, CSIBridge and Midas were used to verify the authenticity of the simulation result from Midas Civil. By comparing the deformation diagrams and stress diagrams from both models, it showed that the result was somewhat consistent. Finally, by comparing the self-weight deformation diagrams for the straight bridge and the curved one, the way was studies how curvature affected the mechanical behavior of bridge. The result showed that the mechanical behavior of curved bridge could not be predicted precisely by means of straight bridge, in case where the difference between both deformations was too large.
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