Title page for 91322023


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Student Number 91322023
Author chih-tang shin(石鋕堂)
Author's Email Address No Public.
Statistics This thesis had been viewed 2758 times. Download 2406 times.
Department Civil Engineering
Year 2004
Semester 1
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Real Time Monitoring of Track Deformation by Fiber Bragger Grating Sensors
Date of Defense 2003-12-07
Page Count 152
Keyword
  • fiber Bragger grating sensor
  • monitoring
  • safety warning
  • track deformation
  • Abstract A-thermal type Fiber Bragger Grating sensors based on innovative fiber-optical technologies were adopted to study the track deformation behaviors. With the deformation calculating software developed from this research, the deformation shape of the rail tracks can be detected. After experiments in the laboratory to identify basic properties of the sensing devices, installation and testing of the monitoring system were carried out in field. Monitoring results demonstrate that this FBG type track safety monitoring is durable and can provide sensitive, clear, and stable signals for long term monitoring. It is believed that the technology developed from this research including the software and hardware has great potential for further development and application on the safety monitoring of track system.
    Table of Content 第一章 緒論                           1
    1.1研究動機與目的             1
    1.2研究目標                        3
    1.3智能結構監測                      4
    1.4論文架構                        5
    第二章 光纖應變感測器                      7
       2.1 相位調變                        7
    2.1.1  Fabry-Perot干涉式光纖感測器            8
         2.1.2 低干涉式光纖感測器                8
       2.2 光強度調變                       8
         2.2.1 布里淵光時域反射感測器              9
       2.3 波長調變                        10
         2.3.1 光纖光柵感測器                  10
    第三章 光纖光柵感測系統                     12
    3.1 原理簡介                        12
    3.2 光纖光柵感測器之溫度與應變量測系統           17
    3.2.1 參考值FBG法                   17
    3.2.2 雙波長FBG疊加法                 17
    3.2.3 FBG與LPG結合法                 18
    3.2.4  FBG與EFPI混合法                18
    3.2.5 雙直徑FBG法                   19
    3.2.6  A-Thermal光纖光柵感測器             20
    3.3 性能驗證                        22
    3.3.1 光纖光柵感測器之特性驗證(未披覆保護者-裸光纖)  22                 
    3.3.2  A-Thermal光纖光柵感測器特性驗證         24
    第四章 軌道安全監測系統                     27
       4.1 軌道變形機制                      27
       4.2 軌道安全監測之基本構想與建制              29
    4.3 變形計算原理                      32
    4.4 現地軌道安全監測系統之可行性研究            43
    4.5 軌道絕緣接頭                      46
    4.6 現地軌道安全監測系統之規劃               47
    4.7 軌道安全監測系統之實作                 50
    第五章 軌道安全監測系統使用說明                 52
       5.1 系統規格說明                      52
       5.2 監測軟體畫面說明                    54
       5.3 設定功能說明                      57
    第六章 軌道安全監測預警                     64
       6.1 軌道檢測車與軌道變形監測                64
    6.2 軌道安全預警評估                    67
    6.3 軌道安全預警研究                    70
    第七章 監測結果與討論                      74
       7.1 運作情形                        74
       7.2 初步成果                        74
    第八章 結論與建議                        78
    8.1 結論                          78
    8.2 建議                          81
    參考文獻
    附表
    附圖

    表目錄
    表1.1-1傳統感測技術與光纖感測技術比較表             86
    表2.2-1 光纖價格及精度一覽表                  87
    表3.2-1 光纖光柵感測器基本規格                 88
    表4.2-1 FOMS2000ASP相關規格                  88
    表4.4-1 變形試驗之1/4點變位                   89
    表4.4-2 變形試驗之1/2點變位                   89
    表4.4-3 變形試驗之3/4點變位                    89
    表5.1-1 FOMS2000ASP產品規格                  90
    表6.2-1 國內軌道幾何不整容許標準                 91

    圖目錄
    圖1.1-1 造橋路段事故現場圖                 92
    圖1.1-2 花東線軌道變形現場圖                  92
    圖3.1-1 光纖結構示意圖                     93
    圖3.1-2 光柵光纖感測器                     93
    圖3.2-1 雙直徑FBG應變及溫度同時感測法             94
    圖3.2-2 FBG反射光譜圖                     94
    圖3.3-1 純鋁板試體圖                      95
    圖3.3-2 實驗室鋁板試體配置                   95
    圖3.3-3 實驗室拉力試驗現場                   95
    圖3.3-4 應變計應變與拉力圖                   96
    圖3.3-5 光纖光柵波長飄移量與拉力圖               96
    圖3.3-6 光柵理論應變量與試體理論應變比較圖           97
    圖3.3-7 應變靈敏度分析法一                   97
    圖3.3-8 應變靈敏度分析法二                   98
    圖3.3-9 量測應變裝置圖                     98
    圖3.3-10 應變-波長關係圖                    99
    圖3.3-11 量測溫度裝置                      99
    圖3.3-12 溫度-波長關係圖                    100
    圖3.3-13 受力狀態下波長-時間關係圖               100
    圖3.3-14 應變-波長關係圖                    101
    圖3.3-15 溫度-波長關係圖                    101
    圖3.3-16 溫度-波長關係圖                    102
    圖3.3-17 應變鬆弛試驗結果                    102
    圖4.1-1 軌道受力示意圖                     103
    圖4.2-1 光纖感測系統基本架構                  103
    圖4.2-2 A-Thermal光纖光柵感測器                 104
    圖4.2-3 FOMS2000ASP監測系統                 104
    圖4.2-4 電腦控制系統                      105
    圖4.3-1 由三個感測器應變值解出斷面內力             105
    圖4.3-2 變形量測分析原理                    106
    圖4.3-3 連續梁單元分解圖                    107
    圖4.3-4 假設之連續梁光纖感測器位置               107
    圖4.4-1 台鐵50N鋼軌斷面尺寸圖                 108
    圖4.4-2 軌道變形實驗佈設圖                   108
    圖4.4-3 軌道變形量測之實驗佈置及加載系統            109
    圖4.4-4 軌道變形之加載系統                   109
    圖4.4-5 鋼軌底部之支稱細部照片                 110
    圖4.4-6 變形試驗之1/4點變位曲線圖               110
    圖4.4-7 變形試驗之1/2點變位曲線圖               111
    圖4.4-8 變形試驗之3/4點變位曲線圖               111
    圖4.4-9 光纖光柵感測器裝置完成圖                112
    圖4.5-1 軌道絕緣接頭施工之鑽孔技術流程             112
    圖4.6-1 列車出軌情形                      118
    圖4.6-2 實驗室參考之監測系統架構圖               118
    圖4.6-3 現場探勘及監測系統規劃                 119
    圖4.6-4 軌道安全監測系統構想示意圖               119
    圖4.7-1 現地軌道安全監測規劃(1)                 120
    圖4.7-2 現地軌道安全監測規劃(2)                 120
    圖4.7-3 固定距離方塊與保護盒                  121
    圖4.7-4 光纖式溫度計及其固定                  121
    圖4.7-5 光纖光柵感測器軌道現場佈設流程             122
    圖4.7-6 光纖光柵感測器配置側視圖                130
    圖4.7-7 施工完成後之軌道變形監測系統              131
    圖5.1-1感測器規格                        131
    圖5.2-1 桌面圖示                         132
    圖5.2-2 程式開始執行視窗                     132
    圖5.2-3 選擇”Stop”後之視窗                    133
    圖5.2-4 程式”Run”執行視窗                    133
    圖5.2-5 RS232程式所在視窗                    134
    圖5.2-6 RS232程式開始運作                    134
    圖5.2-7 檔案儲存格式                      135
    圖6.1-1 軌道維修管理流程                    135
    圖6.1-2 台北市捷運軌道維修檢測車                136
    圖6.2-1 軌道變形之安全預警                   136
    圖6.2-2 軌道不整之高低                     137
    圖6.2-3 軌道不整之方向                     137
    圖6.2-4 軌道不整之平面性                    137
    圖6.2-5 軌道不整之軌距                     138
    圖6.2-6 軌道不整之水平                     138
    圖6.2-7 軌道安全監測系統資料處理流程與安全評估         139
    圖6.3-1 算例一架構圖                      140
    圖6.3-2 於不同取點數下之相對變形圖               140
    圖6.3-3 算例二架構圖                      141
    圖6.3-4 於不同取點數下之相對變形圖               141
    圖6.3-5 算例一最小二乘法計算結果                142
    圖6.3-6 算例二最小二乘法計算結果                142
    圖7.1-1 光纖光柵斷裂情形                    143
    圖7.1-2 光纖光柵維修情形                    143
    圖7.2-1 溫度變化圖                       143
    圖7.2-2 CH1各Gauge之應變變化情形               144
    圖7.2-3 CH2各Gauge之應變變化情形               144
    圖7.2-4 CH3之各Gauge之應變變化情形              145
    圖7.2-5 光纖光柵感測器配置圖                  145
    圖7.2-6 光纖光柵感測系統維修後示意圖              145
    圖7.2-7 列車經過之動態應變反應                 148
    圖7.2-8 長期監測中之列車行經反應                148
    圖7.2-9 溫度變化與應變關係圖                  149
    圖7.2-10 溫度歷時曲線                      149
    圖7.2-11 道碴道床與混凝土道床之長期應變差異           150
    圖7.2-12 軌道單日溫度變化圖                   150
    圖7.2-13 軌道單日應變變化圖                   150
    圖7.2-14 軌道溫度及軌道應變之線性關係              150
    圖7.2-15 不同溫度下之各點軸向應變圖               151
    圖7.2-16 不同溫度下之垂直向變形                 151
    圖7.2-17 不同溫度下之側向變位                  151
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    Advisor
  • Chung-Yue Wang(王仲宇)
  • Files
  • 91322023.pdf
  • approve immediately
    Date of Submission 2004-12-29

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