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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 卿建業 | |
dc.contributor.author | Tsai-Jung Wu | en |
dc.contributor.author | 吳采容 | zh_TW |
dc.date.accessioned | 2021-06-17T01:52:43Z | - |
dc.date.available | 2018-07-27 | |
dc.date.copyright | 2017-07-27 | |
dc.date.issued | 2017 | |
dc.date.submitted | 2017-07-24 | |
dc.identifier.citation | 王俊翔(民105)。根據圓錐貫入試驗資料判識土壤層面與分析工址的機率特性(未出版之碩士論文)。國立台灣大學,台北市。
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/67834 | - |
dc.description.abstract | 關聯性長度是大地工程中描述空間中資料相關性的一個重要參數,關聯性長度大反應出的實際情況為地層為接近均質情形。本研究將以圓錐貫入試驗 (cone penetration test, CPT) 的修正之錐尖阻抗 (qt) 資料做為討論對象,著重探討利用圓錐貫入試驗資料估計水平向關聯性長度。相比於垂直向關聯性長度,水平向關聯性長度的估計較為困難,原因為水平方向上的資訊豐富程度遠低於垂直方向,以施作單一孔位CPT作為說明,CPT在施作時是以垂直方向進行,故在垂直方向上有大量的資訊,而沒有任何水平方向的資料,故較難有效的估計出水平關聯性長度。面對在水平方向上有限的資訊,本研究採用以貝氏分析為基礎的漸進式馬可夫鏈蒙地卡羅法 (transitional Markov chain Monte Carlo, TMCMC; Ching and Chen, 2007) 作為估計水平方向的隨機場參數的方法,且於研究過程中發現,自關聯性模型的選擇會對關聯性長度評估有很大的影響,故進一步將自關聯性模型類型一併納入考量,所用的自關聯性模型為Stein於1999年提出的Whittle-Matérn模型,此模型可平滑參數以及關聯性長度同時納入考量。在上述二種工具的使用下,本研究欲以有限(少於十孔)的CPT孔數估計水平關聯性長度,最後將以實際案例說明估計水平關聯性長度之流程。 | zh_TW |
dc.description.abstract | The scale of fluctuation (SOF) is an important parameter to characterize the spatial correlation of soil or rock property. The large SOF indicates that the soil or rock is close to homogeneous situation. This study will focus on the estimation of horizontal SOF based on the cone penetration test (CPT) soundings. Compare to the vertical SOF, determining the horizontal scale of fluctuation is challenging, because a single CPT sounding contains abundant information, but no information in the horizontal direction. In current study, it demonstrates that it is possible to estimate the horizontal SOF base on the limited CPT soundings which separation distances are chosen suitably and probability analysis framework. The study also shows that the Whittle-Matérn auto-correlation model should be adopted to obtain a consistent estimation of horizontal SOF. The proposed approach will be applied to a real case study finally. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T01:52:43Z (GMT). No. of bitstreams: 1 ntu-106-R04521117-1.pdf: 2403611 bytes, checksum: ec922aea51e18759fc0dd18f0dedb741 (MD5) Previous issue date: 2017 | en |
dc.description.tableofcontents | 致謝 I
中文摘要 II ABSTRACT III 目錄 IV 圖目錄 VI 表目錄 VIII 第一章 緒論 1 1.1 研究動機與目的 1 1.2 研究方法 4 1.3 本文內容 5 第二章 文獻回顧 6 2.1 隨機場 (random field) 6 2.1.1 穩態隨機場 (stationary random field) 6 2.1.2 自關聯性模型 (auto-correlation function) 8 2.2 Whittle-Matérn 模型 12 2.3 馬可夫鏈蒙地卡羅法 14 2.4 漸進式馬可夫鏈蒙地卡羅法 16 2.5估計方法一致性探討 18 第三章 研究方法 20 3.1 資料模擬 20 3.1.1 隨機場參數對模擬資料的影響 20 3.1.2 三維零均震盪項之模擬 23 3.2 漸進式馬可夫鏈蒙地卡羅法於估計隨機場參數之表現 25 3.2.1 辨識模型已知情況 26 3.2.2 辨識模型未知情況 29 3.3 Whittle-Matérn 模型之納用 33 3.4 影響水平關聯性長度辨識因子 35 3.4.1 孔位數量/佈置的影響 36 3.4.2 厚度(nD)的影響 39 3.5 討論與小結 42 第四章 現地案例討論 43 4.1 案例地點 43 4.2 TMCMC估計隨機場參數流程 45 4.3 參數辨識成果 46 4.3.1 參數辨識成果一 47 4.3.2 參數辨識成果二 50 4.3.3 參數辨識結果三 51 4.3.4 參數辨識結果四 52 第五章 結論與建議 54 參考文獻 56 附錄A 提問與答覆 62 | |
dc.language.iso | zh-TW | |
dc.title | 以有限圓錐貫入試驗估計水平向關聯性長度 | zh_TW |
dc.title | Estimating horizontal scale of fluctuation with limited CPT soundings | en |
dc.type | Thesis | |
dc.date.schoolyear | 105-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 劉家男,王瑞斌 | |
dc.subject.keyword | 大地工程,現地調查,空間變異性,水平關聯性長度, | zh_TW |
dc.subject.keyword | geotechnical engineering,site characterization,spatial variability,horizontal scale of fluctuation, | en |
dc.relation.page | 64 | |
dc.identifier.doi | 10.6342/NTU201701831 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2017-07-24 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 土木工程學研究所 | zh_TW |
顯示於系所單位: | 土木工程學系 |
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