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    Title: 以碎形維度描述優良級配砂土之剪力強度
    Other Titles: Describing the Shearing Strengt of the Well-graded Sands
    Authors: 洪勇善;吳朝賢;羅揚宗
    Contributors: 淡江大學土木工程學系
    Keywords: 摩擦角;碎形維度;顆粒形狀;顆粒尺寸;Friction Angle;Fractal Dimension;Grain Shape;Particle Size
    Date: 2007-09
    Issue Date: 2014-06-24 10:00:19 (UTC+8)
    Publisher: 臺北縣淡水鎮 : 中國土木水利工程學會
    Abstract: 本文針對優良級配條件下,探討不同顆粒形狀與尺寸對砂土內摩擦角之影響。顆粒形狀以碎形理論之碎形維度來量化砂土顆粒之形狀特徵'建立次圓球狀至角狀所對應之碎形維度。試驗三種砂土之顆粒尺寸範圍介於74 -4760μm 之間,顆粒形狀之碎形維度介於1. 034 - 1. 056 。由直剪試驗求得三種不同優良級配曲線下之砂土剪力強度,並經分析顯示於試驗範圍內砂土摩擦角與碎形維度約呈線性關係。
    This paper aims to veritY a relationship between the shape of sand grains and the friction angle. In fractal theory, the fractal dimension (D) can provide a measure of particle surface shape. From subrounded to angular sand grain were analyzed to obtain the fractal dimension D= 1.034 ~
    1.056 in this study. The samples are well-graded sand within the particle size ranging from 74 ~ 4760 flm. The shear strength of sand was carried using direct shear tests to determine the values of the shear strength parameter with three well-graded curve. A similar linear relationship was found between the friction angle and fractal dimension in this study range.
    Relation: 九十六年電子計算機於土木水利工程應用研討會論文集=Proceedings of 2007 Conference on Computer Application in civil & Hydraulic Engineering,頁775-780
    Appears in Collections:[土木工程學系暨研究所] 會議論文

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