臺灣博碩士論文加值系統

台灣平地有限，山地及丘陵佔了全省面積三分之二以上，故許多工程朝向山地發展是不可避免的趨勢，因此需要去面對邊坡穩定之相關課題。本研究針對構築於節理岩坡上之鐵塔，模擬鐵塔承受垂直與水平載重之三種不同組合，探討整體岩坡穩定相關之工程行為。研究利用UDEC軟體進行數值模式分析，於一組及兩組規則節理岩坡鐵塔受到三種不同組合載重下，分析的重點在於伴隨岩坡應力之調整、節理面之錯動、張力裂縫及塑性區之產生及發展等等。
研究結果顯示，規則節理岩坡之工程行為會受節理組數及作用於鐵塔之不同載重組合影響，於研究範圍內最危險情況為包含垂直與水平載重，且水平載重沿節理之分量會下推鐵塔。經由漸進式破壞相關歷程之應力等壓線、位移分佈及塑性區發展，可以作為規則節理岩坡鐵塔營運期間之維護與監測之參考。

The land availability is not enough because mountainous and hilly area is over two-thirds in Taiwan. It is unavoidable that more and more constructions are compelled towards hills, and slope stability becomes a big issue to engineers. This research focuses on the engineering behavior of rock slope with one or two regular jointed set under tower loading. In order to understand the overall stable characteristic of the tower and slope, Three different combinations of tower loading near slope were applied. Numerical code UDEC was used to build numerical model and perform analysis in the study. The investigation focused of three different combination of tower loading on the rock slope. Important analytic issues include stress redistribution; slip dislocations of joints, tensile cracks and the development of the plastic zone.
The analytical results show that the mechanical behavior of tower built in regular jointed rock slope is influenced on the tower loading, numbers of joint set within the study scope. The most critical situation happens while the tower loading consists of vertical and horizontal loading, and the parallel joint component of horizontal loading is to push down the tower. Base on the equal-stress contour, the magnitude of deformation and plastic zone of the overall slope under different progressive periods, some suggestions are proposed for remediation and monitoring of tower built in regular jointed rock slope.

目錄
論文摘要 I
ABSTRACT II
誌謝 IV
目錄 V
圖目錄 VIII
表目錄 XVII
第一章 緒論 1
1.1前言 1
1.2研究動機與目的 2
1.3研究內容與流程 3
第二章 文獻回顧 5
2.1傾倒破壞之類型 6
2.1.1逆向坡之傾倒種類 6
2.1.2次要傾倒之傾倒種類 (Secondary Toppling) 8
2.2單一塊體傾倒之基本理論 10
2.3傾倒破壞機制 13
2.4傾倒破壞之相關研究 14
2.4.1物理試驗(physical models) 15
2.4.2極限平衡法(limit equilibrium method) 15
2.5岩石材料之力學行為 17
2.5.1均質岩石材料之力學行為 17
2.5.2節理岩石材料之力學行為 18
2.5.3節理勁度對弱面變形之影響 20
2.5.4節理組數對岩體強度之影響 23
第三章 分析方法說明 24
3.1 UDEC程式的發展與理論背景 25
3.2 UDEC之行為模式 28
3.2.1塊體之組合律模式 28
3.2.2節理之組合律模式 31
3.3基本術語定義 34
3.4分析流程簡介 37
3.4.1分析架構及輸入指令說明 37
3.4.2實際分析步驟 40
3.4.3符號說明 41
3.5本研究利用UDEC建置之二維數值模式 42
3.5.1數值分析模式 42
3.5.2數值分析網格之建立 42
3.6 UDEC分析須輸入之參數 45
3.6.1完整岩石參數 45
3.6.2節理參數 49
第四章 一組規則節理岩坡於鐵塔不同加載組合之工程行為探討 52
4.1 利用二維軟體UDEC進行岩坡鐵塔破壞之相關案例研究 54
4.2一組規則節理岩坡成形之數值模式建置 56
4.2.1岩坡剖面形狀及尺寸 56
4.2.2本研究模擬之岩坡地質構造概述 57
4.2.3數值分析之測點佈設與命名 59
4.2.4岩坡鐵塔載重之數值模擬 60
4.3一組規則節理岩坡承受鐵塔垂直載重V之整體穩定分析 62
4.3.1三種不同載重組合 62
4.3.2單一傾倒破壞之發展歷程訂定 62
4.3.3坡體應力分布 65
4.3.4坡體位移趨勢 84
4.3.5岩坡5處不同測點之載重位移曲線(σd-δR)探討 92
4.4一組規則節理岩坡承受鐵塔垂直載重及側向水平載重之穩定分析 103
4.4.1岩坡承受鐵塔垂直載重及側向水平載重(V+HL、V+HR)之穩定分析 103
4.5.一組規則節理岩坡5處不同測點於不同載重組合下之載重位移曲線(σd-δR)探討 110
第五章 兩組規則節理岩坡於不同載重組合下之力學行為探討 124
5.1兩組規則節理岩坡承受鐵塔垂直載重之穩定分析 124
5.1.1坡體等壓線分布 125
5.1.2坡體位移趨勢圖 143
5.1.3岩坡5處不同測點之載重位移曲線(σd-δR)探討 152
5.2.兩組規則節理岩坡承受鐵塔垂直載重及側向水平載重之穩定分析 163
5.2.1岩坡承受鐵塔垂直載重及側向水平載重之穩定分析 163
5.3.兩組規則節理岩坡5處不同測點於不同載重組合下之載重位移曲線(σd-δR)探討 170
5.4.岩坡後載後於不同節理組數下之力學行為探討 184
第六章 結論與建議 191
6.1結論 191
6.2建議 193
參考文獻 194

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