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研究生: 蔡志揚
Chiun-Yian Tsan
論文名稱: 混凝土修補試體之有限元素分析
指導教授: 張瑞宏
Jui-Hung Chang
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 土木工程學系
Department of Civil Engineering
畢業學年度: 88
語文別: 中文
論文頁數: 41
中文關鍵詞: 黏合材料複合斜剪試體彈塑性模型有限元素法破壞機制
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  • 壞程度隨著使用時間的增長而日漸擴大,間接地影響到結構物的使用
    年限及功能。有鑑於此,在時間及財力等因素的考慮下,擬藉由補強
    混凝土結構物之修補,必須選用適當的黏合材料作為黏著劑。為
    了觀察維修後之成效,一般皆使用混凝土與黏合材料所構成之複合斜
    剪試體來進行一切盡可能之參數的評估。在研究中擬以四種不同特性
    之材料作為黏合材料,應用理想及硬化彈塑性模型以數值有限元素法
    來作分析,藉由此種方法來了解斜剪試體在加載過程中之力學行為及
    研究之參數包括黏合材料與混凝土間之相對勁度、黏結角度及黏
    合材料之厚度等。主要的目的在於了解加載過程中,沿著黏結界面兩
    側材料中之主應力分布;以及試體在加載過後所可能產生之破壞行
    為。進而決定出適當的黏合材料及黏結角度之範圍。


    摘要(中)…………………………………………………………………..I 目錄…………………………………………………………………….…II 圖目錄…………………………………………………………………….V 表目錄……………………………………………………………………第一章緒論……………………………………………………….1 1.1 前言………………………………………………………...1 1.2 研究動機………………………………………………….1 1.3 研究目的與研究方法…………………………………2 1.4 修補材料分類及性質之簡介………………………3 第二章文獻回顧………………………………………………..4 2.1 相關課題之究………………………………………….4 2.2 傳統修補試驗之式………………………………….11 2.3 未來研究向……………………………………….……11 第三章基本原理與分析法………………………….……13 3.1 基本原理……………………………………………..….13 3.1.1 材料力學……………………………………………...13 3.1.2 塑性力學……………………………………………..14 3.1.3 有限元素法…………………………………………..16 3.2 分析方法………………………………………..………19 3.2.1 力學解析解…………………………………………19 3.2.2 有限元素分析之模型…………………….……….23 3.2.2-1 試體尺寸與邊界條件……………………..……….23 3.2.2-2 研究之參數………………………………..……….24 3.2.2-3 混凝土與黏合材料之特性………………..……….25 3.2.2-4 分析流程…………………………………..……….27 第四章結果與討論……….……………………………………..28 4.1 案例組一:(一般性參數影響之探討)……..……..28 4.1.1 黏結界面上之主應力分布以及與加載位移之 關係…………………………………………..…….……28 4.1.1-1 總承載力σg與加載位移之關係…………….…..29 4.1.1-2 應力集中的觀察……….………………….….…..29 4.1.1-3 主應力值隨加載程度之變化趨勢…….…………30 4.1.1-4 黏合材料種類與主應力分佈之關係…….………31 4.1.1-5 黏合材料厚度的影響…….………………………32 4.1.2 試體之承載極限與破壞情形之探討…………. 32 4.1.2-1 承載極限之探討…………………………………. 33 4.1.2-2 破壞情形之探討… … … … … … … … … … … … … . 34 4.2 案例組二:(黏合材料角度與厚度關係之研 究)………………………………………. 35 第五章結論與建議…………………………………………..37 5.1 結論……………………………………………………..37 5.2 建議…………………………………………………….38 參考文獻……………………………………………………………….39

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