- 學位論文
雙跨扇狀式系統斜張橋之靜力與動力分析
Static and Dynamic Analysis of Two-Span Cable-Stayed Bridge with Modified Fan System
摘要
摘要 橋梁結構之型式，隨著時代進步、科技發達、經驗累積以及不同材料之選用，發展出不同之橋型，同時凸顯出工程技術之精進，時代所蘊含之文化特色。各種類型的橋梁皆擁有其獨特的力學特性，而斜張橋（cable-stayed bridge）是一種同時包含受拉吊索以及受壓主塔及主梁兩種力學行為的結構型式。因為搭配使用抗拉及抗壓構件，其工程效益較佳、材料使用較節省，所以能以更輕巧的結構形式、追求更大的跨度以及美化環境的效果。 新穎的造型和大量節省材料的結構形式，也代表著在結構分析與設計較從前的橋梁型式來得先進。為了因應將來橋梁工程之趨勢，先行深入透徹的了解斜張橋的各種力學行為是不可或缺的。本研究針對斜張橋在不同載重組合的情況下，進行其結構行為的分析並加以討論。本文使用套裝軟體TANGO以及SAP2000分析其靜力與動力行為，並以一設計實例加以驗證研究的心得。
並列摘要
Abstract Referring to the form of the bridge structure, because of the progress of age and technology, experience accumulation, and use of different materials, we can develop different types of bridges which can show highlight of the refinement of engineering technology and the cultural characteristics. Every bridge has its unique structural characteristics, cable-stayed bridge is a kind of bridge structure subjected to tension and compression. Because of its better force endurance, materials saving, long span length, and structural system benefit, so we can reach lighter structures, bigger span, and the additional value, beautifying the environment. To the new style and the form of saving materials, cable-stayed bridge is more difficult in designing and analyzing its structure than traditional bridge. However, it is indispensable for an engineer to understand the structural behavior of cable-stayed bridge in order to respond to the requirement of bridge structure in the future. This research aims to investigate the design and analysis of cable-stayed bridge under different load combinations, and analyze its dynamic and static behaviors through a software program TANGO and SAP2000, and will also probe into one real cable-stayed bridge and verify the design criterion.