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研究生:黃柏盛
研究生(外文):HUANG, BO-SHENG
論文名稱:以三維數值分析探討管冪隧道之受震位移行為
論文名稱(外文):Three-dimensional numerical analysis on the seismic displacement behaviors of the pipe-roof tunnel
指導教授:陳水龍陳水龍引用關係
指導教授(外文):CHEN, SHONG-LOONG
口試委員:李勝宗陳卓然何政道陳水龍
口試委員(外文):LEE, SHEN-CHUNGCHEN, JWO-RANHO, CHENG-TAOCHEN, SHONG-LOONG
口試日期:2023-07-16
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:土木工程系土木與防災碩士班
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2023
畢業學年度:111
語文別:中文
論文頁數:138
中文關鍵詞:Plaxis 3D管冪隧道受震位移地震有限元素法
外文關鍵詞:Plaxis 3DPipe-Roof tunnelSeismic displacementEarthquakeFinite element method
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臺灣位處於環太平洋地震帶上,頻繁的地震運動使得工程設計時,須加以考量地震因素所帶來的影響。也隨著都市快速發展,市區平面道路運量供不應求,交通建設也逐漸往橋梁及隧道延伸。本研究針對市區管冪矩形隧道進行研究,探討靜態開挖對下方捷運隧道之影響,也探討動態地震對整體工程完工階段所反應的受力情形分析。
本研究以「忠孝東路地下通廊新建工程」為例,利用有限元素法PLAXIS 3D軟體進行靜態及動態模擬分析。於地震資料選用上,使用中央氣象局測得331花蓮外海地震之南北向及東西向加速度歷時,選擇離工址最近測站數據作為模型地震力加載進行研究。
研究結果發現靜態開挖對捷運隧道之上行線有較大之側傾量;沉陷部分則是下行線有較大的沉陷量。動態部分不管是南北向地震還是東西向地震,對結構體有一定的位移量。南北向地震會對結構造成上浮往北傾斜的現象,應力集中於工程結構上半部;東西向地震會對結構造成向東之位移量,無側傾的狀態出現。在各向地震力的邊界都有應力集中的現象,較大變形量也會出現在應力集中的位置。
Taiwan is located in the Pacific Rim Seismic Zone, and the frequent seismic motions make it necessary to consider the impacts of earthquakes in engineering design. With the rapid development of urban areas, the capacity of urban roads is not enough to meet the demand, and the transportation construction has been gradually extended to bridges and tunnels. This study focuses on the urban tubular rectangular tunnels to investigate the effects of static excavation on the MRT tunnels underneath, as well as to analyze the dynamic seismic effects on the forces in the completion stage of the whole project.
In this study, the static and dynamic simulations of the "Zhongxiao East Road Underground Corridor Project" were performed using the finite element method (FEM) and the PLAXIS 3D software. For the seismic data selection, the north-south and east-west acceleration histories of the 331 Hualien Offshore Earthquake measured by the Central Weather Bureau were used, and the data from the nearest station were selected as the model seismic force loading for the study.
The results of the study show that the static excavation has a larger lateral inclination on the upper line of the MRT tunnel, while the subsidence is larger on the lower line of the tunnel. The dynamic portion of the tunnel has a certain amount of displacement on the structure regardless of whether it is a north-south earthquake or an east-west earthquake. North-south earthquakes cause upward and northward tilting of the structure, and the stress is concentrated in the upper part of the structure; east-west earthquakes cause eastward displacements of the structure, and there is no lateral tilting of the structure. There is a concentration of stress at the boundary of each direction of seismic force, and the larger deformation will also occur at the location of the concentration of stress.
摘要 i
ABSTRACT ii
誌謝 iv
目錄 v
表目錄 ix
圖目錄 xi
第一章 緒論 1
1.1 研究動機與目的 1
1.2 研究範圍及方法 1
1.3 研究內容與架構 2
第二章 文獻回顧 4
2.1 管冪工法概述 4
2.1.1 先撐管冪工法 4
2.1.2 管冪推進工法 6
2.2 靜態開挖相關研究 8
2.3 深開挖與鄰近隧道互制行為 14
2.4 隧道受震分析 17
2.4.1 土壤-結構互制法 17
2.4.2 非線性側推分析法 18
2.4.3 強制變位法 19
2.4.4 數值分析法 20
2.5 地震歷時選用 21
2.6 隧道受震相關研究 25
第三章 研究方法 34
3.1 PLAXIS程式簡介 34
3.1.1 有限元素法 34
3.1.2 PLAXIS於大地工程之應用 35
3.2 土壤模式介紹與應用 36
3.2.1 Mohr-Coulomb模式 36
3.2.2 Hardening soil model模式 41
3.2.3 Hardening soil model with Small-Strain模式 46
3.3 結構參數簡介 48
3.3.1 基礎工程 49
3.3.2 假設工程 49
3.4 建立界面 49
3.5 分析流程概述 50
3.5.1 模型建立 50
3.5.2 材料參數設置 54
3.5.3 管冪隧道設置 56
3.5.4 網格生成 57
3.5.5 滲流條件 58
3.5.6 動力邊界 58
3.5.7 阻尼 61
3.5.8 地震資料 62
3.5.9 地震歷時調整 64
3.5.10 基線校正 67
3.5.11 工序設置 69
3.5.12 計算 70
3.5.13 成果輸出 70
3.5.14 數據統計及分析 70
第四章 研究案例 71
4.1 工程概述 71
4.2 土層概況 73
4.3 地下水概況 75
4.4 擋土設施 76
4.5 管冪推進工法 81
4.5.1 工程背景 81
4.5.2 鋼管規格 81
4.5.3 使用設備 83
4.5.4 施工流程 84
4.6 監測系統概述 89
4.6.1 監測儀器介紹 90
4.6.2 監測儀器佈設 91
4.6.3 監測頻率 94
第五章 分析與討論 96
5.1 各開挖階段對捷運隧道之影響 96
5.1.1 隧道側傾量 98
5.1.2 隧道沉陷量 103
5.2 動力分析 105
5.2.1 隧道斷面分析 105
5.2.2 土體變形 113
5.2.3 結構變形 116
第六章 結論與建議 122
6.1 結論 122
6.2 建議 123
參考文獻 124
附錄A、委員意見回覆表 128
附錄B、傅立葉轉換MATLAB程式碼 131
附錄C、地震歷時基線修正MATLAB程式碼 132
符號彙編 135
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