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Student Number 78342004
Author Liao Shin(廖新興)
Author's Email Address No Public.
Statistics This thesis had been viewed 279 times. Download 11 times.
Department Civil Engineering
Year 1994
Semester 2
Degree Ph.D.
Type of Document Doctoral Dissertation
Language zh-TW.Big5 Chinese
Title Frictional Properties of Drilled Pile in Cohesive Soil
Date of Defense
Page Count 248
Keyword
  • Interface;Surface roughness;Model pile
  • Abstract This study carried out direct shear tests and simple shear
    tests to investigate the frictional properties of the pile-soil
    interface and to obtain the relationships among the shear
    stress, the sliding displacement at interface and the shear
    strain in soil. The theory of nonlinear elasticity was used to
    analyze the shear deformation of the soil around pile shaft.
    The proposed the method based on these tests and the
    theoretical analysis is used to predict the frictional behavior
    of pile shaft. The results of the analysis show that the
    relationship between the displacement and the frictional force
    predicted by the proposed method is consistence with those
    obtained from the triaxial model pile tests, the tank model
    pile tests and the pile load test. The results of frictional
    test show that the total displacement in prefailure stage
    includes the sliding displacement at interface and the shear
    deformation in soil. After the failure of the pile-soil
    interface, the variation of total displacement is come from
    sliding displacement. Before the failure, the dependency of the
    shear strain in soil on the friction ratio at the interface is
    the same as the one on the friction ratio in the soil. It can
    be find that there is little influence of the diameter of pile
    on the frictional resistance of shaft in triaxial and tank
    model tests. Howere, the displacement of pile at failure is
    increase with the increase of the diameter.
    Table of Content 封面
    中文摘要
    英文摘要
    目錄
    圖目錄
    表目錄
    符號說明
    第一章 緒論
    1.1 研究動機與目的
    1.2 研究方法
    1.3 論文內容
    第二章 文獻回顧
    2.1 摩擦強度
    2.1.1 總應力分析
    2.1.2 有效應力分析
    2.1.2.1 分析模式
    2.1.2.2 椿表面之水平方向有效應力
    2.1.3 摩擦阻抗比分析法
    2.1.4 混合有效應力與總應力分析法
    2.1.4.1 λ分析法
    2.1.4.2 Janbu分析法
    2.1.5 估算承載力之正確性
    2.2 介面間之位移
    2.3 基樁載重行為之分析
    2.4 模型椿試驗
    2.5 介面摩擦性質
    2.5.1 介面位置
    2.5.2 位移與載重曲線
    2.5.3 摩擦強度與摩擦角
    第三章 椿材與土壤間的基本摩擦性質
    3.1 土樣
    3.2 椿材
    3.3 儀器設備
    3.4 試驗方法
    3.5 直接剪力試驗與單剪試驗理論值比較
    3.6 試驗結果與分析
    3.6.1 介面上土體之變形
    3.6.2 應力路徑
    3.6.2.1 受剪過程土壤體積固定
    3.6.2.2 定體積情況下之持續受剪
    3.6.2.3 定荷重情況下之持續受剪
    3.6.3 磨擦比曲線
    3.6.4 介面上之孔隙水壓
    3.6.5 磨擦強度
    3.6.6 磨擦係數
    3.6.7 介面上土體之位移
    3.7 介面之粗糙或光滑
    3.8 相關因素之影響程度分析
    3.9 結語
    第四章 基椿之磨擦行為
    4.1 上拔與下壓基椿之磨擦阻抗
    4.2 儀器設備
    4.2.1 模型椿
    4.2.2 三軸室
    4.2.3 加壓系統
    4.2.4 量測資料之讀取與記錄
    4.3 試驗方法
    4.3.1 試體的準備
    4.3.2 試體的壓密
    4.4 模型椿與試體尺度之決定
    4.4.1 椿周圍土壤之受剪變形
    4.4.2 邊界效應
    4.4.3 端座效應
    4.5 軸對稱之環狀應力
    4.5.1 彈性材料之應力傳遞
    4.5.2 圍壓經試體傳遞後作用於椿表面之應力
    4.6 模型椿之磨擦行為
    4.6.1 負磨擦力對上拔阻抗之影響
    4.6.2 模型椿之磨擦載重行為
    4.6.2.1 表面磨擦阻抗
    4.6.2.2 孔隙水壓
    4.7 磨擦阻抗與位移之載重行為
    4.7.1 磨擦阻抗
    4.7.2 椿體位移
    4.7.3 磨擦阻抗與位移之關係
    4.7.4 模型椿之磨擦阻抗與位移分析
    4.7.5 椿徑與載重-位移曲線之關係
    4.8 μρ法與SHAFT程式分析結果之比較
    4.8.1 SHAFT程式分析法
    4.8.2 分析結果之比較
    4.9 實際基椿之載重行為
    4.9.1 基椿與土層狀況
    4.9.2 椿載重試驗與分析結果
    4.10 結語
    第五章 土槽中模型椿之磨擦行為
    5.1 儀器設備
    5.1.1 土槽
    5.1.2 加壓設備
    5.2 試驗方法
    5.3 置椿對土體應力之影響
    5.3.1 置椿前土壤之壓密
    5.3.2 置椿後土體之應力
    5.3.3 壓密完成後土體之應力
    5.3.4 土槽中土體之側向土壓力
    5.4 負摩擦力
    5.5 模型椿之摩擦載重行為
    5.6 結語
    第六章 結論與建議
    6.1 結論
    6.2 建議
    參考文獻
    Reference
    Advisor
  • Chang Huei Wen(張惠文)
  • Files No Any Full Text File.
    Date of Submission

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