| Summary: | 碩士 === 淡江大學 === 土木工程學系 === 91 === In the course of electric power conveyance beginning from power plant to some residential and industrial areas, the conveying route is often changeable both in its elevation and its orientation, due to the uneven topography or terrain which transmission towers march across. This makes that the tensile force acting at transmission towers from high-voltage cables might have diverse horizontal or vertical angles with ground surface. Accordingly, each transmission tower would exhibit its unique seismic behaviors. With the use of 3-D beam elements for the modeling of each tower body and the use of efficient cable elements for the modeling of high-voltage cables suspending between transmission towers, it is expected that the differences of deformed and stressed conditions among structural members of transmission towers due to topography variation can be understood thoroughly. Furthermore, to enhance the reliability and value in practice for the analytical outcome, an effective spatial soil-structure interaction model and an effective parameter called “failure index” will be utilized in the analyses. It is shown in the results that the stress extent and nonlinear behaviors of transmission towers subjected to heavy earthquake would be affected significantly by the route orientation that the tower group goes along.
|
|---|
