中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/49074
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 66984/66984 (100%)
Visitors : 23167598      Online Users : 469
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/49074


    Title: 併構岩體積比與力學性質之不確定性;Uncertainty of Block Volumetric Proportions and Mechanical Properties of Bimrocks
    Authors: 田永銘
    Contributors: 土木工程學系
    Keywords: 併構岩;岩塊體積比;力學性質;不確定性;研究領域:土木水利工程類
    Date: 2011-08-01
    Issue Date: 2012-01-17 17:22:04 (UTC+8)
    Publisher: 行政院國家科學委員會
    Abstract: 併構岩係由大地工程性質不同的粗顆粒岩塊及細粒基質材料所構成的混合岩石。根據這樣的定義,併構岩包含相當廣泛的大地材料,例如:混成岩、斷層角礫岩、崩積岩屑等。併構岩由於具有異質性、異向性及複雜的特性,在大地工程上屬困難的大地材料。由於組成併構岩的岩塊及基質在空間上的變動性,使得併構岩的工程性質遠較一般大地材料來得散亂。本計畫研究目標著重於併構岩體積比量測及力學性質的變異性/不確定性的探討。首先將,本計畫將建構3維的表徵單元及利用PFC3D形成虛擬的併構岩試體,再以蒙地卡羅方法隨機取樣,以探討取樣尺寸對併構岩體積比量測結果的變異性影響。在力學方面,本計畫採用PFC3D進行一系列虛擬三軸試驗,以評估尺寸對併構岩力學性質之變異性的效應。 Block-in-matrix rocks (bimrocks are defined as “a mixture of rocks, composed of geotechnically significant blocks within a bonded matrix of finer texture”. By this definition bimrocks encompass a wide range of geologic materials including melanges, fault breccia, landslide debris. Because of their heterogeneity, anisotropy and complex nature, bimrocks are difficult geotechnical material with which to deal in geotechnical engineering. The engineering properties of bimrocks are much scatter than other geometerials due to block and matrix with large spatial variability. The scope of this project is to investigate the variations/uncertainties of block proportion and mechanical properties of bimrocks. In this project, 3-D representative volume element (RVE) and PFC3D are adapted to generate the visual bimrocks. Monte Carol approach will be employed to simulate the procedures of sampling and measurement of block proportion. In addition, a series of visual triaxial tests for bimrocks will be conducted by PFC3D to evaluate the size effect on the variation of mechanical properties of bimrocks. 研究期間:10008 ~ 10107
    Relation: 財團法人國家實驗研究院科技政策研究與資訊中心
    Appears in Collections:[Department of Civil Engineering] Research Project

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML331View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明