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Student Number 963202012
Author Nai-Chia Ker(柯乃嘉)
Author's Email Address No Public.
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Department Civil Engineering
Year 2009
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Application of displacement-based design on double isolated bridge
Date of Defense 2010-07-22
Page Count 107
Keyword
  • damper
  • displacement-based design
  • isolated bridge
  • Abstract The purpose of this thesis is to study double isolated bridge and displacement-based design which is applied to the isolated bridge. Traditional isolated bridge set the isolator on the bottom of pier, while double isolated bridge set the isolator on where the plastic hinge is. The isolator is placed at where the plastic hinge generated on the double isolated bridge, and thus when the bridge impacted by strong motion, the other frame is still linear.
    In this study, the simulation of bridge deck displacement and the ground test were compared. The non-traditional double isolated bridge, top isolated bridge, and bottom isolated bridge were modeled with the traditional isolated bridge. The effect under earthquake of each bridge type was simulated by analyzing and comparing different parameters of earthquakes. Moreover, the effect damper, on traditional isolated bridge and double isolated bridge, was also studied. The bridge deck was therefore enabled not to be suffered with significant displacement or unseating when it was impacted by strong earthquake. The safety of the bridge deck was also ensured.
    The result demonstrated that the model of double isolated bridge using displacement-based bearing design would gain a group of suitable parameters by using static analysis. However, when we applied these parameters to ground motion, there would be an error between the result of ground motion and of static analysis.
    Table of Content 摘 要…………………………………………………………………….I
    Abstract…………………………………………………………………. II
    誌 謝…………………………………………………………………. III
    目 錄..…………………………………………………..….…………..IV
    表 目 錄………………………………………………..……………VII
    圖 目 錄………………………………………………..…….………VIII
    第一章緒論………………………………………...…..……………….1
    1.1研究動機與目的………………………………..………………1
    1.2文獻回顧……………………………………..…………………3
    1.2.1位移設計法………………….………………….3
    1.2.2隔減震裝置…………………………….………...…….5
    1.3論文架構………………………………………..……………8
    第二章研究理論與方法……………………………..……………..11
    2.1隔震橋型介紹…………………………………………………12
    2.1.1傳統隔震橋……………………………………………13
    2.1.2柱底隔震橋……………………………………………13
    2.1.3雙層隔震橋…………………………………………14
    2.2位移設計法……………………………………..………..15
    2.2.1替代結構法…………………………………………17
    2.2.2位移設計法應用於雙層隔震橋支支承設計………17
    2.3複合振態阻尼比………………………………………………20
    2.4多自由度系統非線性動力歷時分析…………………………20
    第三章數值模型……………………............…………..……..………28
    3.1目標橋梁型式……………………………….………………28
    3.2數值分析模型……………………………...………………….29
    3.2.1.上部結構與下部結構模擬………………………………..29
    3.2.2.隔震支承…………………...……………….…………..30
    3.2.3.鋼柱塑鉸之模擬…………………………………………30
    3.2.4.土壤彈簧之模擬…………………………………………..31
    3.2.5.拉桿之模擬………………………………………………32
    3.2.6.外加阻尼器之模擬………………………………………34
    3.3結構動力歷時分析.………………………………..………..34
    第四章參數分析………………………………………………..……..47
    4.1隔震橋梁動力反應比較……………………………………47
    4.2隔震橋梁外加阻尼裝置之參數分析………………………50
    4.3雙層隔震橋支承參數分析…………………………………52
    第五章位移設計法實例分析…………………………………………89
    5.1應用位移設計法於雙層隔震橋支承設計……………………89
    5.2應用位移設計法於外加阻尼雙層隔震橋支承設計………92
    5.3小結…………………………………………………………....95
    第六章結論與未來展望…………………………………….…..…101
    6.1結論……………………………………………………...…101
    6.2未來展望……………………………………………………..103
    參考文獻…………………………………………………….……….104
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    Advisor
  • Tzu-ying Lee(李姿瑩)
  • Files
  • 963202012.pdf
  • disapprove authorization
    Date of Submission 2010-08-27

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