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研究生:王勁凱
研究生(外文):Jin-KaiWang
論文名稱:重力式基礎受垂直作用力下之變形分析
論文名稱(外文):Settlements of Gravity Foundations Under Vertical Loads
指導教授:陳景文陳景文引用關係郭玉樹郭玉樹引用關係
指導教授(外文):Jing-Wen ChenJing-Wen Chen
學位類別:碩士
校院名稱:國立成功大學
系所名稱:土木工程學系碩博士班
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:95
中文關鍵詞:風力發電重力式基礎反覆載重沉陷量
外文關鍵詞:Wind powerGravity foundationCyclic loadingSettlement
相關次數:
  • 被引用被引用:3
  • 點閱點閱:329
  • 評分評分:
  • 下載下載:40
  • 收藏至我的研究室書目清單書目收藏:0
風力發電為目前發展技術最成熟的再生能源之一,其中重力式基礎為風力發電機組普遍採用的基礎型式之一。由於風機需承受長期風力之影響,基礎若承受反覆載重,基礎沉陷將不斷增加,使土壤承載力下降,影響整體結構安全。
本研究係針對重力式基礎埋置於非凝聚性土壤時,使用修正後O’Loughlin & Lehan (2010)建議之沉陷評估法,並導入Kuo (2008)勁度衰減模型(Degradation Stiffness Model)概念,分析基礎-土壤系統承受反覆載重下之變形行為。
經由本研究之方法,配合動態平鈑載重試驗,可準確預測基礎受靜態載重和反覆載重下之沉陷量,作為設計重力式基礎時之參考。
Wind power has been most mature technology for development of renewable energy. Gravity foundations are used as foundation structures for wind turbines. It is well known that cyclic loading of foundations arises mainly from wind loads may leads to an accumulation of permanent settlement and may decrease the soil bearing capacity with the number of loading cycles.
This study is used modified Degradation stiffness model (Kuo, 2008) and introduced into modified O’Loughlin & Lehan (2010) settlement prediction method to analysis the deformation performance of gravity foundations embedded in cohesionless soils under cyclic loading.
Settlements of foundations that both under static loading and cyclic loading, can be predicted accurately through the method that developed in this study by using plate loading test as a reference as gravity foundations are designed.
摘要 I
Abstract II
誌謝 III
目錄 V
表目錄 IX
圖目錄 XI
符號 XV
第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
1.3 研究目的及方法 2
1.4 研究流程 3
第二章 文獻回顧 5
2.1 風力發電基礎型式 5
2.2 重力式基礎 6
2.3 重力式基礎破壞模式 9
2.4 淺基礎極限承載力 12
2.5 靜態作用力下之淺基礎沉陷分析方法 15
2.5.1 Terzaghi and Peck (1948) 建議之沉陷評估法 15
2.5.2 Schmertmann (1970) 建議之沉陷評估法 16
2.5.3 Berardi and Lancellotta (1991) 建議之沉陷評估法 18
2.5.4 Mayne and Poulos (1999) 建議之沉陷評估法 19
2.5.5 實驗與理論之比較 20
2.5.6 O’Loughlin and Lehan (2010)沉陷預測法 22
2.6 偏心載重下之沉陷分析方法 24
2.6.1 Prakash (1981)沉陷預測法 24
2.6.2 Georgiadis and Butterfield (1988)沉陷預測法 25
2.7 反覆載重下之非凝聚性土壤行為 27
2.8 反覆載重下重力式基礎變形 30
2.8.1 Hettler (1981)之室內試驗結果 30
2.8.2 Sawicki (1998)之室內試驗和理論 32
2.8.3 Yokohama and Miura (2003)之室內試驗 34
第三章 勁度衰減模型 37
3.1 土壤於反覆三軸作用力下之行為 37
3.2 非凝聚性土壤於反覆作用力下之永久變形量 39
3.2.1 半對數經驗公式 39
3.2.2 冪次半經驗公式 40
3.3 土壤勁度衰減模型 41
3.4 基礎-土壤系統衰減勁度模型 42
第四章 重力式基礎半經驗公式分析方法 45
4.1 模型建立 45
4.1.1 靜態載重下之沉陷量 45
4.1.2 反覆載重下之沉陷量 47
4.2 模型校正 49
4.2.1靜態作用力下模型校正 49
4.2.2反覆作用力下模型校正 54
4.3 現地試驗模擬 56
4.4 陸域風機基礎沉陷量預測 59
4.4.1 靜態載重下之沉陷預測 59
4.4.2 反覆載重下之沉陷預測 60
4.5 參數敏感度分析 61
4.6 重力式基礎沉陷預測建議步驟 63
第五章 參數分析 65
5.1 反覆載重之案例分析 65
5.1.1 靜態載重分析 65
5.1.2 反覆載重分析 67
5.2 大尺寸重力式基礎之沉陷量預測 70
5.2.1 靜態載重下之分析結果 71
5.2.2反覆載重下之分析結果 75
5.2.3 重力式基礎受靜態載重下之正規化 83
第六章 結論與建議 87
6.1 結論 87
6.2 建議 88
參考文獻 89
附錄A 基礎極限承載力(t/m2) 95

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