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論文中文名稱:具防落設施裝置與不等高橋柱之橋梁受地震歷時之時間域與頻率域分析 [以論文名稱查詢館藏系統]
論文英文名稱:Time and Frequency Domains Analysis on Bridge with Unequal Height Column and Functional Unseating Prevention Devices [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
畢業學年度:97
出版年度:98
中文姓名:周政毅
英文姓名:Cheng-Yi Chou
研究生學號:96428017
學位類別:碩士
語文別:中文
口試日期:2008-06-23
論文頁數:114
指導教授中文名:李有豐
口試委員中文名:陳清泉;張國鎮;徐增興
中文關鍵詞:不等高橋柱橋梁防落設施裝置非線性動力歷時分析希爾伯特-黃轉換
英文關鍵詞:Unequal height columnsFunctional unseating prevention devicesNon-linear dynamics analysisHilbert-Huang Transform
論文中文摘要:本論文旨在研究不同的橋梁防落設施裝置(橡膠支承墊,防震拉桿,止震塊)對於不等高橋柱橋梁在地震歷時做用下的影響,利用現行廣泛使用於業界的結構分析軟體SAP2000針對不同橋柱高低比建立橋梁的數值分析模型,進行El-Centro地震歷時非線性動力分析。於時間域觀察橡膠支承墊位移及各防落裝設施置間的互制行為,並提出一套針對不等高橋柱橋梁及各種橋梁防落設施裝置的簡易分析方法。使用希爾伯特-黃轉換(Hibert-Huang Transform, HHT)後之2D希爾伯特頻譜(Hibert spectrum)瞭解裝設各防落設施裝置之橋梁在頻率域之變化,可得到防落設施裝置的作動次序,整合出一套針對不同橋柱高低比橋梁在地震力作用下防落設施裝置的作動機制。本文之成果可供工程師一套設計具防落設施裝置之橋梁的有效分析方法和分析流程。
論文英文摘要:In this thesis, the mechanical behaviors of bridge with functional unseating prevention devices (rubber bearing, restrainer, and shear key) were investigated by using the time and frequency domains analysis. The functions of the devices are to prevent bridge from unseating and to prevent most of the seismic force transfer to the bridge column. The non-linear dynamics analysis with SAP 2000 was used to simulate the bridges with unequal height column. The Hilbert-Huang Transform (HHT) was also used to transfer the time history response into the time-frequency domain and also to obtain the Hilbert spectrums of the rubber bearing displacement of bridges. The Hilbert spectrums can determine when the functional unseating prevention devices were operated and their operation sequences. The results of this thesis can provide bridge engineer to understand the mechanical behaviors of unseating prevention devices with unequal height columns and how to design functional unseating prevention devices in bridge with different column height ratio.
論文目次:中文摘要 i
英文摘要 ii
誌 謝 iii
目錄 iv
圖目錄 vi
表目錄 xiii
第一章 緒論 1
1.1 研究背景 1
1.2 研究動機 2
1.3 研究內容與目的 3
1.4 橋梁防落設施裝置文獻回顧 5
1.4.1 國內研究文獻 5
1.4.2國外研究文獻 8
1.4.3 希爾伯特-黃轉換相關研究文獻 9
1.5 本文研究內容 10
第二章 防落設施裝置系統 12
2.1 橡膠支承墊 12
2.1.1 橡膠支承墊力學行為 13
2.1.2 橡膠支承墊數值模型 15
2.2 防震拉桿 20
2.2.1 防震拉桿力學行為 21
2.2.2 防震拉桿數值模型 23
2.3 止震塊 25
2.3.1 止震塊力學行為 26
2.3.2 止震塊數值模型 27
第三章 橋梁數值分析模擬 29
3.1 等高橋柱之橋梁非線性動力歷時分析 31
3.1.1 等高橋柱2.5 m之橋梁非線性動力歷時分析 32
3.1.2 等高橋柱5 m之橋梁非線性動力歷時分析 36
3.1.3 等高橋柱7.5 m之橋梁非線性動力歷時分析 40
3.1.4 等高橋柱10 m之橋梁非線性動力歷時分析 44
3.2 不等高橋柱之橋梁非線性動力歷時分析 48
3.2.1 不等高橋柱2.5 m-5 m之橋梁非線性動力歷時分析 49
3.2.2不等高橋柱2.5 m-7.5 m之橋梁非線性動力歷時分析 53
3.2.3不等高橋柱7.5 m-10 m之橋梁非線性動力歷時分析 57
3.3 等高橋柱和不等高橋柱之橋梁分析結果討論 62
3.4 防落設施裝置作動次序研判 69
3.5防落設施裝置元素參數設定分析結果討論 72
3.6 小結 75
第四章 HHT頻譜分析 76
4.1 希爾伯特-黃轉換(HHT)分析理論 76
4.1.1內建模態函數(IMF) 77
4.1.2 經驗模態分析法(EMD) 78
4.1.3 希爾伯特轉換(HT) 80
4.2 HHT頻譜分析結果 81
4.2.1 建立分析之HHT頻譜 81
4.3 等高橋柱橋梁HHT頻譜分析 86
4.3.1 等高橋柱2.5 m之橋梁頻譜分析 86
4.3.2 等高橋柱7.5 m之橋梁頻譜分析 90
4.3.3 等高橋柱10 m之橋梁頻譜分析 94
4.3 不等高橋梁頻譜分析 99
4.3.1 不等高7.5 m-10 m橋梁頻譜分析 99
4.4 小結 103
第五章 結論 105
5.1 結論 105
參考文獻 110
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