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論文中文名稱:九份地區邊坡受震之位移分析 [以論文名稱查詢館藏系統]
論文英文名稱:Earthquake-induced Displacement Analysis for Slope in Jun-Fen [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
中文姓名:羅曉萍
英文姓名:Hsiao-Pang Lo
研究生學號:92428008
學位類別:碩士
語文別:中文
口試日期:2006-07-21
論文頁數:158
指導教授中文名:陳水龍
指導教授英文名:S.L. Chen
口試委員中文名:陳立憲;陳卓然
口試委員英文名:L.H. Chen;C.J. Chen
中文關鍵詞:有限元素法邊坡穩定PLAXIS
英文關鍵詞:Finite element methodSlope stability analysisPLAXIS
論文中文摘要:台灣地區地殼變動迅速、地震頻繁、河川坡度大;加上氣候屬於亞熱帶,加速了地表岩石的風化和侵蝕,也隱藏著許多的災害潛勢。因此區域性山坡穩定評估,對於工程規劃及邊坡防災具有極重要的參考價值。本研究針對可能造成邊坡破壞的潛在因子進行評估,分析該區域山崩的潛在可能性。
本研究以邊坡穩定分析針對可能造成邊坡破壞的地震力及地下水位進行分析,以瞭解邊坡地區受到動態作用下其力學之行為及破壞之機制,採用有限元素法PLAXIS軟體分析動態後之結果,並討論各點之加速度歷時曲線以及地下水位位移的變化,提供邊坡災害防治的應變機制和研擬耐震設計之參考依據。研究結果顯示,地質剖面的變位會隨著所輸入地震力而異,也就是邊坡土壤的土層分佈情況對於該地區的邊坡穩定性有相當程度的影響。比較各測站EW東西方向和NS南北方向的位移量而言,位移反應中TAP045EW測站EW方向的位移量相較於NS方向來說是較大的,而由整體的趨勢來看,EW和NS方向的位移量滑動趨勢是相同,皆為產生整體滑動的趨勢,方向是往坡面方向產生的是測向滑動,絕大部分測站位移量反應情況與TAP045EW和TAP045NS的反應相近。其中在無水位TAP045EW的位移量和其他測站之位移量結果較不同的是,其產生最大位移的滑動趨勢是在邊坡突起處的坡頂和邊坡上方處。因此,基本上位移量圖中顯示大致滑動的方向皆是朝向坡面外的方向。另外,地層之土壤性質及參數,亦有未確定性存在,以至於反應出之變位值有部分偏小,未來可針對該地區之地層參數作更合理的探討和模擬。
論文英文摘要:The crust of Taiwan location is quickly movement, frequently earthquakes, and deep slope of rivers. The weather is subtropics that speeds up the surface of rock weathered and eroded, and also hides many potential disasters. Hence, a regional slope stability assessment has significantly essential value for project planning and slope precaution. The research has analyzed possibility of regional potential landslide and evaluated potential factors that may cause slope failure.
The research has used slope stability analysis to analyze seismic loading and groundwater level for possibility of slope failure, to understand slope region where is affected by the function of dynamics and failure, to apply finite element method of PLAXIS software and analyze the result after movement, to discuss the change of displacement for each of acceleration historical graph and groundwater level, and to provide slope precaution and prevention for reaction function and propose seismic design as reference. The result of the research has shown that the displacement of geological section will follow seismic loading due to the different data that means the soil distribution of slope has quite affected regional slope stability.
To compare with the displacement of EW and NS direction of observation, the reaction of displacement TAP045EW observation of EW direction is rather larger than that of NS direction. In general, the amount of displacement of EW and NS direction intends the same that towards the entire of movement, and the direction towards to slope that produce sliding movement. The displacement of majority observation is similar to TAP045EW and TAP045NS reaction. Among the displacement of TAP045EW without groundwater and other observation is different from the top of slope protrusion. Basically, the graphs of displacement have shown that major sliding direction towards the outside of slope. In addition, due to uncertain soil properties and parameters, the data of displacement reaction may be little smaller. However, it can be discussed soil layers parameters of the region for simulation in the future.
論文目次:中文摘要.............................................. i
英文摘要..............................................iii
誌謝..................................................v
目錄..................................................vii
表目錄................................................ix
圖目錄................................................xi
第一章 緒論...........................................1
1.1 前言.........................................1
1.2 研究背景與研究目的...........................2
1.3 研究方法.....................................3
1.4 研究內容.....................................5
第二章 文獻回顧......................................6
2.1 地震對於邊坡崩壞的影響.......................6
2.1.1 邊坡崩壞與坡度的關係....................7
2.1.2 邊坡崩壞與地表加速度的關係..............8
2.1.3 邊坡崩壞與地層土壤種類的關係............9
2.2 塊體滑動的定義和分類.........................10
2.3 邊坡穩定分析方法..................................13
2.3.1 擬靜力分析(Pseudo static Analysis)...........13
2.3.2 Newmark 分析理論...............................17
2.4 Newmark理論累積位移量之經驗公式..................20
2.4.1 Ambraseys & Srbulov的經驗公式..................20
2.4.2 彭文飛的經驗公式...............................21
第三章 研究方法與流程................................23
3.1 PLAXIS 程式簡介.............................23
3.1.1 PLAXIS 運算模式........................25
3.1.2 PLAXIS基本操作及指令說明...............25
3.1.3 有限元素法的特點.......................26
3.2 九份邊坡之PLAXIS 分析穩定說明................27
第四章 案例分析......................................29
4.1 研究案例範圍介紹.............................29
4.2 研究區域和地質概況...........................30
4.3 研究區域氣候和降雨概況.......................38
4.4 地震資料概況.................................41
4.5 九份地區數值模型分析..............................49
4.5.1 有限元素法網格建立與邊界條件之設定..............49
4.5.2 邊坡土層參數與動態荷重之設定....................53
第五章 九份邊坡分析之結果與討論.......................65
5.1 PLAXIS軟體分析結果...............................65
5.2 以經驗公式計算位移量結果.........................111
5.3 Newmark 計算累積位移曲線之結果...................126
5.4 PLAXIS結果與經驗公式之位移量比較與討論...........131
第六章 結論與建議....................................132
6.1 結論.........................................132
6.2 建議.........................................133
參考文獻..............................................135
附錄 測線剖面位置和鑽孔資料...........................140
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