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系統識別號 U0026-1508201816591200
論文名稱(中文) 以單剪試驗探討爐石含量對麥寮砂排水剪力強度之影響
論文名稱(英文) Effects of Slag Content on Drained Shear Resistances of Slag-MLS mixed Soils under Simple Shear Conditions
校院名稱 成功大學
系所名稱(中) 土木工程學系
系所名稱(英) Department of Civil Engineering
學年度 106
學期 2
出版年 107
研究生(中文) 林晉守
研究生(英文) Chin-Shou Lin
學號 N66051223
學位類別 碩士
語文別 中文
論文頁數 90頁
口試委員 指導教授-張文忠
口試委員-倪勝火
口試委員-柯永彥
口試委員-黃安斌
中文關鍵字 單剪試驗  轉爐石  水中沉降法  土壤孔隙參數  抗剪強度 
英文關鍵字 Simple shear test  BOF slag  Water pluviation  Pore parameters  Shear strength 
學科別分類
中文摘要 台灣為一海島型國家,因地理位置緣故,港口發展迅速,而港口之興建伴隨著港口淤泥堆積、周圍海岸線後退、海灘消失等問題,故港口疏浚作業及港口周圍實行養灘是為環境永續的重大課題。本研究以雲林麥寮區之麥寮港為例,利用麥寮港之疏浚泥沙添加轉爐石(Slag)作為更抗侵蝕、抗剪動之回填材料,轉爐石是為煉鋼工業之副產物,其具有高抗剪強度、比重大之特性。研究內容為將麥寮砂(Mai-Liao Sand, MLS)與轉爐石以不同配比均勻混合,以顆粒組構觀點計算土壤之孔隙參數,並以水中沉降法(Water pluviation)準備試體,利用壓密排水單剪試驗探討不同轉爐石配比對原有疏浚泥沙之物理與力學性質之影響;再以改良效果最佳之配比用層狀鋪灑轉爐石方式準備試體,探討均勻混合與層狀堆積之抗剪強度差異。其結果能驗證轉爐石作為混合改良回填材料之可行性,並提供一量化結果作為實際施作之參考。
英文摘要 Taiwan is an island-type country. Due to its geographical location, the port is developing rapidly. The construction of the port is accompanied by problems such as silt accumulation in the port, the retreat of the surrounding coastline, and disappearance of the beach. Therefore, the dredging operation of the port and sand fill works around the port are environmental sustainability issues. This study uses the dredged sediment from the Mai-Liao harbor to add the BOF slag as a more anti-erosion and shear-resistant backfill material. The BOF slag is the by-product of the steelmaking industry, which has a high shear resistance and specific. The research content is to uniformly mix the Mai-Liao Sand (MLS) and the BOF slag in different ratios, calculate the pore parameters of the soil from the viewpoint of particle structure and prepare the specimen by water pluviation. We use consolidation drainage simple shear test to investigate the influence of different BOF slag content on the physical and mechanical properties of the dredged sediment form Mai-Liao harbor. And we prepare the specimen by layering the BOF slag method to investigate the difference in shear resistance between uniformly mix method and layered method. The results verify the feasibility of the BOF slag as a hybrid modified backfill material and provide a quantitative result as a reference for field application.
論文目次 摘要 I
EXTENDED ABSTRACT II
致謝 IX
目錄 X
表目錄 XV
圖目錄 XVI
第一章 緒論 1
1-1 研究背景與動機 1
1-2 研究方法與流程 3
1-3 論文架構 5
第二章 文獻回顧 6
2-1 單剪試驗的發展 6
2-1-1 單剪試驗儀 6
2-1-2 主應力軸旋轉 8
2-1-3 應力不均勻 9
2-1-4 尺寸效應 10
2-2 影響顆粒性土壤剪力強度的因素 12
2-2-1 顆粒尺寸影響 12
2-2-2 尺寸效應 13
2-2-3 顆粒級配影響 14
2-3 重模試體的製作 15
2-3-1 濕夯法(Moist Tamping, MT) 15
2-3-2 空氣霣落法(Air Pluviation, AP) 15
2-3-3 水中沉降法(Water Pluviation, WP) 16
2-4 二元堆積理論 17
2-4-1 顆粒組構 17
2-4-2 二元堆積模型 18
2-4-3 孔隙比參數 18
2-4-4 土壤的力學性質 19
第三章 試驗儀器及設備 20
3-1 大型單剪試驗儀 20
3-2 儀器架構 20
3-3 單剪盒與雙向剪力架 21
3-3-1 頂底蓋 22
3-3-2 金屬環 23
3-3-3 外部連通裝置 24
3-3-4 壓力傳感器 24
3-3-5 雙向剪力架 26
3-4 軸向加載子系統 27
3-4-1 支撐架及軸向馬達 27
3-4-2 軸向位移傳感器 28
3-4-3 軸向荷重傳感器 29
3-5 側向加載子系統 31
3-5-1 支撐架及側向馬達 31
3-5-2 側向位移傳感器 31
3-5-3 側向荷重傳感器 32
3-5-4 分層變位傳感器 34
3-6 體積變化量測子系統 36
3-6-1 伺服馬達及轉輪箱 36
3-6-2 液壓缸 37
3-7 自動控制子系統 38
3-7-1 PID控制邏輯 38
3-7-2 傳感器訊號擷取卡 39
3-7-3 馬達控制軸卡 41
3-7-4 LabView程式撰寫 42
3-7-5 系統自動控制流程 43
3-7-6 軸向加載控制邏輯 43
3-7-7 側向加載控制邏輯 44
3-7-8 體積變化量測控制邏輯 44
3-8 系統驗證 45
3-8-1 峴港砂基本物理性質 45
3-8-2 試驗規劃 46
3-8-3 試驗流程 46
3-8-4 試驗結果 47
第四章 試驗內容 51
4-1 麥寮砂的基本性質 51
4-2 轉爐石的基本性質 53
4-3 試驗規劃 56
4-3-1 不同轉爐石含量混麥寮砂之壓密排水單剪試驗 58
4-3-2 以分層鋪灑轉爐石方式之麥寮砂壓密排水單剪試驗 59
4-4 水中沉降法試體準備 60
4-4-1 試體準備流程 60
4-4-2 水中沉降驗證 62
4-5 試驗流程 64
4-5-1 試體製作與架設 64
4-5-2 試體飽和 65
4-5-3 試體壓密 65
4-5-4 試體剪動 66
4-6 數據處理 66
第五章 試驗結果與分析 68
5-1 剪動結果 68
5-1-1 試驗結果整理 68
5-1-2 剪應力與體積應變發展 70
5-1-3 有效摩擦角 72
5-2 轉爐石含量對剪力強度的影響 75
5-2-1 轉爐石含量對有效摩擦角ϕ'之影響 75
5-2-2 轉爐石含量對不同破壞剪應變下剪力強度影響 76
5-3 轉爐石含量對初期剪力模數的影響 78
5-4 層狀與均勻混合對剪力強度的影響 80
5-4-1 層狀堆積試體剪動結果 80
5-4-2 有效摩擦角ϕ'之差異 81
5-4-3 破壞時剪力強度之差異 81
5-4-4 初期剪力模數之差異 82
5-4-5 剪動時試體變形狀況 83
第六章 結論與建議 85
6-1 結論 85
6-2 建議 86
參考文獻 87

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