淡江大學機構典藏:Item 987654321/36133
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    Title: 模型土釘拉出行為之非線性分析
    Authors: 洪勇善;陳榮河
    Contributors: 淡江大學土木工程學系
    Keywords: 非線性分析;拉出試驗;土壤力學行為;土釘;數值模擬;Nonlinear Analysis;Pullout Test;Soil Mechanical Behavior;Soil Nailing;Numerical Simulation
    Date: 2000-02
    Issue Date: 2010-01-11 10:10:47 (UTC+8)
    Publisher: 臺中市:中國土木水利工程學會資訊委員會
    Abstract: 本文首先透過砂土三軸試驗結果,由塑性力學理論觀點,建立砂土之應力-應變-體積變化之組成模式,以做為分析土釘拉出數值模擬的基礎。將實際三維土釘之拉出行為,透過簡化之方式,使其成為二維之軸對稱分析模式,由單支土釘拉出之數值模擬結果顯示,本研究建立之土釘拉出的數值模式,可適當地描述重力灌漿式土釘之拉出行為,且土釘拉出之影響範圍為8倍土釘直徑。拉出過程首先由土釘末端之土壤元素,因側向解壓而先行破壞;緊接著隨拉出力逐漸增加,在拉出端周圍土壤元素開始破壞,並逐漸地往土釘末端延伸;當拉出力達到尖峰拉出力時,土釘末端之土壤元素轉為張力破壞,且土釘前端周圍土壤破壞有擴大趨勢;拉出力進入殘餘階段時,土壤破壞範圍約達2倍土釘直徑。
    Relation: 八十八年電子計算機於土木水利工程應用研討會論文集(一)=Proceedings of the Conference on Computer Applications in Civil & Hydraulic Engineering,頁 629-637
    Appears in Collections:[Graduate Institute & Department of Civil Engineering] Proceeding

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