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研究生： 洪士凱
Hung, Shih-Kai
論文名稱： 鄉城地區液化潛能分區之研究
指導教授： 李德河
Lee, Der-Her
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2005
畢業學年度： 93
語文別： 中文
論文頁數： 123
中文關鍵詞： 液化潛能指數 、液化 、液化評估法
外文關鍵詞： liquefaction, liquefaction potential index
相關次數： 點閱：84  下載：6 
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    • 　　921地震後，液化問題受到國內廣泛之重視，但實際針對都市進行防災計畫時，若廣泛進行鑽探調查，則成本過高，若以少數鑽孔資料進行估計則可能造成估計誤差，因此，本文研究之目的，在於建立一套初步液化潛能分區之方法，以簡單且低成本之分析方法，區分出液化潛能較高之地區，以期降低液化調查之成本。
    　　由於員林地區一帶在921地震後，發生嚴重之液化現象，且相關之研究豐富，具備良好之研究條件，因此本研究以大村鄉、員林鎮、社頭鄉之案例進行研究，利用網格分劃之方法，並選擇以地形、地質、水系、土地利用等四個圖層，利用員林鎮進行液化相關套疊分析，分別以未加權及加權之方式建立初步液化潛能指數 ，並以Iwasaki建議之累積曲線法率定分級之界線；復以大村鄉、社頭鄉之液化與非液化案例進行驗證，比較後得到以加權之初步液化潛能指數進行初步液化潛能分區之方法為較佳之方法。
    　　由本方法進行之液化潛能分區，在本研究研究區內，預測液化之成功率可達94.5％，且其結果有偏向保守側之趨勢，具有初步且保守辨識出液化潛能高低之功用。

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    誌謝 I 摘要 II 目錄 III 表目錄 VI 圖目錄 VII 第一章 緒論 1 1-1 研究動機與目的 1 1-2 研究流程 2 第二章 文獻回顧 3 2-1 土壤液化與液化災害 3 2-2-1 土壤液化定義 3 2-1-2 土壤液化災害 5 2-2 影響液化因子 8 2-3 液化潛能分區建立方法 12 2-3-1 第一級分析法 12 2-3-2 第二級分析法 13 2-3-3 第三級分析法 17 2-4 土壤液化評估方法及液化損害評估 20 2-4-1 SPT簡易經驗法 23 2-4-2 CPT簡易經驗法 38 2-4-3 液化損害評估 42 2-4-4 液化潛能指數 之適用性與修正液化潛能指數 45 2-5 小結 49 第三章 研究內容與研究方法 50 3-1 研究區域概述 50 3-1-1 研究區域 50 3-1-2 環境概況 50 3-2 研究內容 60 3-2-1 SPT簡易經驗法液化潛能分區適用性 60 3-2-2 初步液化潛能分區法 60 3-3 研究方法及步驟 61 3-3-1 網格分劃 61 3-3-2 液化災情調查與分類 61 3-3-3 SPT簡易經驗法液化潛能分區研究步驟 63 3-3-4 初步液化潛能分區研究步驟 65 第四章 SPT簡易經驗法液化潛能分區 67 4-1 鑽探資料 67 4-2 鑽孔液化潛能指數 70 4-2-1 土層安全係數之計算 70 4-2-2 液化潛能指數 之計算 71 4-3 網格化液化分區之結果與災情調查比對73 4-3-1 網格化液化分區 73 4-3-2 災情調查比對 73 4-4 結果討論 78 第五章 初步液化潛能指數與分區 80 5-1 前置作業 80 5-1-1 圖層蒐集、比對與定位 80 5-1-2 液化災情調查分類之量化 81 5-2 圖層液化可能性分類、量化與檢核 83 5-2-1 圖層液化可能性分類 83 5-2-2 圖層液化可能性量化與分類檢核 86 5-3 初步液化潛能指數 、分級率定與驗證 88 5-3-1 未加權之初步液化潛能指數 與分級率定 88 5-3-2 未加權之初步液化潛能分區結果比對 90 5-3-3 加權之初步液化潛能指數 與分級率定 94 5-3-4 加權之初步液化潛能分區結果比對 96 5-3-5 適用性討論 100 5-4 分區結果比較 101 第六章 結論與建議 104 6-1 結論 104 6-2 建議 107 參考文獻 108 附錄一 116 附錄二 120

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