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斜張橋動力特性研究 = Study on Dynamic Charact...

國立高雄大學土木與環境工程學系碩士班

斜張橋動力特性研究 = Study on Dynamic Characteristice of a Cable-Stayed Bridge

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Study on Dynamic Characteristice of a Cable-Stayed Bridge
作者:	楊詠荃,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2013[民102]
面頁冊數:	159面圖，表 : 30公分;
標題:	斜張橋
標題:	cable-stayed bridge
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/13633177179839301539
附註:	參考書目：面52-55
附註:	103年12月16日公開
摘要註:	橋梁動力試驗是一個用以獲知動力特性的可靠方法，而且由現地動力試驗所獲得的結果，除了能夠改善有限元素分析模式，亦可進一步評估原設計的正確性，以及橋體受風力與地震之損傷評估。本文以高屏溪斜張橋為試驗對象，利用現地振動試驗進行全橋試驗，包括主梁、主塔與鋼纜等三部分，再以系統識別方法求得結構動力特性參數。另外，可依這些動力參數修正有限分析模式，獲得較為合理的分析模式，以做為未來橋梁安全評估之分析模式。因此，本文主要研究內容包括：(1). 針對橋塔與主梁分別進行量測，並連結與分析這兩種主要構件之動力特性。(2). 鋼纜元件則施以振動法，求得自然振動頻率再藉由索力計算公式獲得鋼纜預力值，並與歷年資料作比較。因此，由本文研究結果顯示，斜張橋應考慮橋塔振動行為，而且鋼纜索力因橋體長期振動而造成鋼纜預力有所變化，而這些分析結果未來將可與監測資料結合，評估橋梁長期之行為。 Field vibration test is the most reliable means for determining the dynamic characteristics of an existing bridge. The results obtained in a field test can be adopted to improve the finite element model used, to evaluate the rationality of the original design, or to assess the damage occurring on a bridge after a major wind or earthquake event. The ambient vibration test is easy, practical, and economic. It is the most popular way to perform vibration tests because it utilizes common loadings such as wind, normal traffic and environmental noise as the input. To determine its actual dynamic responses under the normal loads, modal identification from the field tests was carried out for the Kao Ping Hsi cable-stayed bridge in southern Taiwan. The dynamic characteristics of the bridge identified by a time series method are compared with those obtained by the finite element analysis. The finite element model was then modified and refined based on the field test results. The results obtained from the updated finite element model were shown to agree well with the field identified results for the first few modes in the three main directions. This has the indication that a rational finite element model has been established for the bridge. The finite element model obtained herein was used as the damage index for monitoring the long-term safety of the Kao Ping Hsi cable-stayed bridge under environmental loads in the future.

斜張橋動力特性研究 = Study on Dynamic Characteristice of a Cable-Stayed Bridge
楊, 詠荃

斜張橋動力特性研究 = Study on Dynamic Characteristice of a Cable-Stayed Bridge / 楊詠荃撰 - [高雄市] : 撰者, 2013[民102]. - 159面 ; 圖，表 ; 30公分.
參考書目：面52-55103年12月16日公開.
斜張橋cable-stayed bridge

斜張橋動力特性研究 = Study on Dynamic Characteristice of a Cable-Stayed Bridge
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