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Student Number 963202025
Author Yu-chieh Kuo(郭玉潔)
Author's Email Address jk731231@gmail.com
Statistics This thesis had been viewed 1018 times. Download 280 times.
Department Civil Engineering
Year 2009
Semester 1
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Boundary effects of laminar box during the dynamic centrifuge modeling test
Date of Defense 2009-10-06
Page Count 170
Keyword
  • boundary effect
  • centrifuge modeling tests
  • laminar box
  • single axis shaking table
  • Abstract ABSTRACT 
    A series of dynamic centrifuge modeling tests are conducted to simulate sandy soil deposit subjected to base shaking. The aim of this study is to investigate the boundary effects of laminar box on the test data acquired from the accelerometer arrays located at different distances away from the box wall for various relative densities of soil and for the liquefied or non-liquefied soil. The acceleration histories and the Fourier’s spectra measured at different depths are adopted to indicate the severity of boundary effect.
    The test results show that the horizontal distance between the wall of laminar box and the accelerometer array would affect the test results a lot. The average variations of the amplitude of acceleration are about 10% and 20%, respectively, when the accelerometer array lies at a quarter and one twentieths of container’s lengths, respectively, away from the wall of laminar box. Once the soil liquefies, the boundary effect is more significant. The relative density of soil plays a trivial role on the boundary effects, which agrees with the anticipation for the use of laminar box.
    Table of Content 目 錄
    內  容                     頁  次
    中 文 摘 要I
    英 文 摘 要II
    誌 謝III
    目 錄IV
    表 目 錄 VI
    圖 目 錄XI
    符 號 說 明XVI
    第一章 緒論1
    1-1 研究動機與目的1
    1-2 研究架構2
    1-3 論文內容2
    第二章 文獻回顧4
    2-1 試驗箱種類簡介4
    2-1-1固壁式試驗箱(rigid box)4
    2-1-2等效剪力樑試驗箱(equivalent-shear-beam container)5
    2-1-3積層版剪力試驗箱(laminar box)5
    2-2 邊界效應6
    2-2-1等效剪力樑試驗箱的邊界效應6
    2-2-2積層版剪力試驗箱的邊界效應7
    2-3 振動台試驗7
    2-4 離心模型基本原理8
    2-4-1 離心模型之尺度效應9
    2-4-2 離心模型試驗之基本相似律10
    2-4-3 離心模型試驗之模型模擬12
    2-5 綜合相關文獻之啟發14
    第三章 試驗計畫與配置23
    3-1 試驗設備23
    3-1-1 地工離心機23
    3-1-2 單軸向振動台24
    3-1-3 積層版剪力試驗箱25
    3-1-4 大型砂土霣降機26
    3-1-5 量測儀器26
    3-2 試驗土樣之基本物理性質27
    3-3 離心振動台試驗步驟與流程28
    3-3-1 試驗箱組立與準備28
    3-3-2 試體製作28
    3-3-3 試驗前準備工作與試驗步驟30
    第四章 試驗結果與分析49
    4-1 模型試驗及試驗參數50
    4-1-1 定義試驗參數50
    4-1-2 模型試驗條件說明51
    4-1-3 定義影響百分比52
    4-2 試驗重複性分析54
    4-2-1振動台基盤加速度歷時重複性54
    4-2-2振動台基盤輸入加速度歷時之傅氏振幅重複性55
    4-2-3製作試體的重複性-中央加速度計陣列比較55
    4-2-4製作試體的重複性-中央傅氏振幅比較56
    4-3 邊界加速度計位置對邊界效應影響分析57
    4-3-1 試體加速度歷時比較58
    4-3-2 試體傅氏振幅比較59
    4-4相對密度對邊界效應影響分析60
    4-4-1 試體加速度歷時比較61
    4-4-2 試體傅氏振幅比較62
    4-5砂試體受振液化對邊界效應的影響63
    4-5-1 試體加速度歷時比較64
    4-5-2 試體傅氏振幅比較65
    4-5-3 試體加速度相位與相關性比較67
    第五章 結論與建議165
    5-1 結論165
    5-2 建議167
    参考文獻168
    Reference 參考文獻
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    [25]Turan, A., Hesham, D. and Naggar, El., “Design and commissioning of a laminar soil container for use on small shaking tables,” Soil Dynamics and Earthquake Engineering Vol. 29, pp. 404-414(2009).
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    Advisor
  • Chung-jung Lee(李崇正)
  • Files
  • 963202025.pdf
  • approve immediately
    Date of Submission 2009-10-23

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