Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/10773
標題: 黏土層加速完成壓密之不同方法探討
The Study on Accelerating Complete Consolidation in Clay Layer for Different Procedures
作者: 王麗惠
Wang, Li-Hui
關鍵字: 壓密;consolidation;水壓力;排水砂樁;pore pressure;sand drain
出版社: 土木工程學系所
引用: 1. 中國土木水利工程學會,”基礎工程施工規範與解說”,第四章地盤改良,第4-1~4-80頁,(1988)。 2. 交通部臺灣區國道新建工程局,”國道大地工程技術實務”,第143~157頁,(2013)。 3. 李奕,”動壓密方法施工中能量問題探討-以麥寮砂為例”, 碩士論文,國立台灣海洋大學河海工程學系,(1994)。 4. 李運國,”黏土層加載受垂直排水帶影響下之力學行為”,碩士論文,國立中興大學土木工程學系,(2002)。 5. 李秋燕,” 黏土層受依時載重下之壓密度分析” ,碩士論文,國立中興大學土木工程學系,(2010)。 6. 李淑芳,” 以超載減少軟弱粘土二次壓縮之研究 ”,碩士論文,私立中原大學土木工程學系,(2002)。 7. 李永欽,” 以少量水泥改良軟弱粘土壓密性質之研究” ,碩士論文,私立中原大學土木工程學系,(2003)。 8. 余明山、何泰源、林英堂、陳逸駿、廖洪鈞,”台灣地區地盤改良技術發展之回顧與展望”,地工技術雜誌第100期,第41~62頁, (2004)。 9. 黃正佑,” 含細料砂土之盤剪實驗研究” ,碩士論文,私立中原大學土木工程學系,(2005)。 10. 張吉佐、洪明瑞、張崇義、張惠文,”台灣地區地盤改良技術之應用現況”,地工技術雜誌第16期,第5~18頁,(1990)。 11. 張吉佐、曾文德、許建裕,”台灣濱海工業區的地盤改良工法”,地工技術雜誌第93期,第53~68頁,(2002)。 12. 楊佳勳,” 以盤檢方式改良砂土相對密度之研究” ,碩士論文,私立中原大學土木工程學系,(2002)。 13. 蘇百加,”預壓工法”,地工技術雜誌第59期,第105~106頁,(1997)。 14. Das, B. M., Principles of Foundation Engineering, 7th Edition, pp. 722-780,(2011). 15. PLAXIS bv, PLAXIS 2D Reference Manual, P.O. Box 572, 2600 An Delft, Netherlands,(2010). 16. Seed, H. B. and Idriss, I. M., “Simplified Procedure for Evaluaitng Soil Liquefaction Potential,” Journal of the Soil Mechanics and Foundation Division, ASCE, Vol. 97, No. 9, pp. 1249-1273, (1971).
摘要: 
由於黏土的滲透係較低,黏土層加載後完成壓密所需時間較為費時,為能加速黏土層的壓密速率,有相當多之工程方法可符合需求,也兼具實務成效。近來由於電腦軟體應用程式非常普及,數值運算方法分析已成為設計的參考依據,本研究針對黏土層加速壓密利用路堤填築施工之預壓及打設砂樁為案例,利用有限元素PLAXIS程式進行分析,並探討相關之力學行為,由分析成果得知:(1)預壓工法及打設排水砂樁均有加速黏土層壓密之成效,尤其排水砂樁之施設,其功效更為顯著;(2)鄰近填築區域下方之黏土層,其水壓力之改變,較具實質性之壓密指標,至於遠離填築區域如趾部下方之黏土層,其水壓力之改變情形,似乎與壓密成效,較不具關連性;(3)排水砂樁之施設或填築預壓,配合水壓力之改變情勢分析,呈現適足之壓密資訊,可提供工程界作為評估沉陷量與完成時間之設計參考。

Much more time is ususally required in complete consolidation of clay layer after sustaining the load due to its low permeability. For accelerating complete consolidation in clay layer, many construction methods are developed for meeting the engineering requirement and having the efficiency of practice. In recent years, the computer software programs are used widely and numerically computational analysis becomes the reference of design. This study will aim at the related mechanical behavior of accelerating complete consolidation in clay layer using the cases of preloading in embankment and installing sand drain in clay layer. All analyses are performed with PLAXIS program. From the analyzed results, it indicated that (1). The methods of preloading in embankment and installing sand drain in clay layer are both effecitive in accelerating complete consolidation in clay layer. The latter is more significant; (2).The pore pressure change near the portion of fill plays a practical index in the evaluation of efficiency of consolidation. The pore pressure change far away from the portion of fill is not associated with consolidation efficiency; (3).The appropriate consolidation information incoportaed with the analysis of pore pressure change from preloading in embankment and installing sand drain in clay layer can provide the design reference of evaluating the settlement and completed time of clay layer in engineering circles.
URI: http://hdl.handle.net/11455/10773
其他識別: U0005-0708201314181000
Appears in Collections:土木工程學系所

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