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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 | Jyh-Jian Yang | en |
dc.contributor.author | 楊志堅 | zh_TW |
dc.date.accessioned | 2021-05-15T17:56:02Z | - |
dc.date.available | 2014-07-16 | |
dc.date.available | 2021-05-15T17:56:02Z | - |
dc.date.copyright | 2014-07-16 | |
dc.date.issued | 2014 | |
dc.date.submitted | 2014-07-04 | |
dc.identifier.citation | [1] Ang and Tang (1984). Probability Concepts in Engineering Planning and Design Volume II. John Wiley & Sons, New York.
[2] Hasofer, A.M. & Lind, N.C. (1974). “Exact and invariant second-moment code format.” ASCE J. Engrg. Mechanics, 100: 111-121, New York. [3] Ching, J.Y.and Phoon, K.K. (2011).”A quantile-based approach for calibrating reliability-based partial factors”. Structural Safty, 33, 275-285. [4] Ching, J.Y.and Phoon, K.K. (2013). “Quantile value method versus design value method for calibration of reliability-based geotechnical codes”, Structural Safty [5] Baecher, G.B. and Christian, J.T. (2003). Reliability and statistics in geotechnical engineering. Chichester,NJ: John Wiley Publications. [6] Phoon, K.K (2004). Towards reliability-based design for geotechnical engineering. Special lecture for Korean Geotechnical Society, Seoul, 8 July 2004. [7] Ching, J. and Phoon, K.K. (2012). Quantile value method versus design value method for reliability-based code calibration. Companion paper submitted to Structural Safety. [8] Kieu Le, T.C. and Honjo, Y. (2009). Study on determination of partial factors for geotechnical structure design. Proceedings of the 2nd International Symposium on Geotechnical Safety and Risk (IS-Gifu 2009) 11-12 June, 2009, Gifu, Japan. [9] Chen, J.R., Ching, J., Chuang, B.Y., Yang, Z.Y., and Shiau, J.Q. (2012). “Axial behavior of dilled shafts in multiple strata – Taipei database”, in preparation for Journal of Chinese Institute of Engineers. [10] ETC 10. Geotechnical design ETC10 Design Example 2.2. Pad foundation with inclined eccentric load on boulder. [11] British Standards Institute (2004). Eurocode 7: Geotechnical design – Part 1: General Rules. BS EN 1997-1:2004, London.http://www.eurocode7.com/etc10/Example 2.2/index.html [12] 余珺瑋 (2012) 可靠度設計方法的比較與案例分析,國立台灣大學工學院土木工程學系碩士論文。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/5327 | - |
dc.description.abstract | 在大地工程也開始逐漸步入可靠度分析與設計(Reliability Analysis & Reliability-based Design)後,基於部分係數設計法(Partial Factors Design)的缺陷,卿建業和方國光在2011年提出了分位數值法(Quantile Value Method, QVM)改善常數部分係數在變動的系統變異下之問題。而大地工程中另一特色為層狀土壤,而由於不同土層所提供之強度變化大,因此必須將每一土層視為一強度來源之隨機變數(Random variables)。最近我們發現使用常數的分位數之QVM在變動的土層當中表現並不良好,因此本研究提出一改良方案,以有效隨機維度(Effective Random Dimension, ERD)來改善QVM的問題。
本文首先將會闡述ERD、破壞機率與機率門檻(Probability threshold, η)三者的關係,說明ERD為何能影響系統,並以一於標準常態下推導得之關係式作為本研究之主體,利用此關係式進行可靠度分析與設計。在本研究中將會使用三個常見的大地工程案例來探討,並加入傳統安全係數設計(Safety Factor Design)、一階二次矩法(First Order Second Moment Method, FOSM)與QVM於不同設計情景下做分析,隨後則利用設計指標預測可靠度指標(Reliability Index, β)來進行比較,其中即加入ERD來觀察是否能夠改善QVM。最後本文則建立一套ERD的預測式,比較傳統QVM與加入ERD後的QVM於可靠度設計之差別。 | zh_TW |
dc.description.abstract | The Reliability Analysis (RA) and Reliability-based Design (RBD) are gradually used in Geotechnical engineering society. However, Using Partial Factor Design which has generally applied in structure engineering in geotechnical engineering is not a good way due to variable varieties. Ching and Phoon proposed a novel simplified RBD method called “Quantile Value Method, QVM” in 2011 in respond to this problem. Furthermore, another characteristic of Geotech is variable sources of resistance such as a single pile embedded in multiple soil layers. According to recent research, the constant η quantile could not maintain a uniform reliability in the practices of variable strata. This paper proposes an improvement adopting the concept called “Effective Random Dimension, ERD” to enhance QVM’s performance.
The focus of this research is to explain the role of ERD and the effect of using ERD in QVM. This paper will discuss the relationship among ERD, probability of failure and Probability Threshold at first. How the ERD affects the whole system is the main point and a formula derived from standard normal distribution would be demonstrated. To present the advantage of using ERD, we will use three common geotechnical examples to statistically compare the information content of three design method, Safety Factor Design, First Order Second Moment Method and QVM. Here will show a simple comparison of three types of design indices, then a regression predicting ERD will be established in order to take the ERD into account in RA and RBD. At the end the results of QVM and ERD-based QVM will be discussed. | en |
dc.description.provenance | Made available in DSpace on 2021-05-15T17:56:02Z (GMT). No. of bitstreams: 1 ntu-103-R01521134-1.pdf: 6289964 bytes, checksum: d339286b4a04c5cda555e3efafaa9404 (MD5) Previous issue date: 2014 | en |
dc.description.tableofcontents | 口試委員會審定書 #
誌謝 i 中文摘要 ii ABSTRACT iii 目錄 iv 圖目錄 vii 表目錄 xi Chapter 1 緒論 1 1.1 研究動機與目的 1 1.2 研究方法 2 Chapter 2 文獻回顧 4 2.1 可靠度分析法 4 2.1.1 蒙地卡羅模擬 Monte Carlo Simulation (MCS) 4 2.1.2 一階二次矩法 First Order Second Moment Method (FOSM) 5 2.1.3 一階可靠度法 First Order Reliability Method (FORM) 7 2.1.4 重要性取樣 Importance Sampling 9 2.2 可靠度設計法 10 2.2.1 一階可靠度法 First Order Reliability Method (FORM) 11 2.2.2 分位數值法 Quantile Value Method (QVM) 11 Chapter 3 有效隨機維度 14 3.1 參數階層可靠度指標βη 14 3.1.1 限度機率門檻 14 3.1.2 βη與可靠度指標 15 3.1.3 限度機率門檻和破壞機率的等同 18 3.2 有效隨機維度d’ 22 3.2.1 視隨機維度與有效隨機維度 (Apparent Random Dimension and Effective Random Dimension) 22 3.2.2 有效隨機維度和系統破壞機率 23 3.2.3 決定有效隨機維度 24 3.3 可靠度指標、βη與有效隨機維度 26 3.4 討論及結論 30 Chapter 4 可靠度設計法之比較 32 4.1 擋土牆案例 33 4.2 樁案例 38 4.3 淺基礎案例 43 4.4 結論 47 Chapter 5 利用設計指標之預測驗證 49 5.1 擋土牆 49 5.2 樁基礎 61 5.3 淺基礎 71 5.4 結論 82 Chapter 6 QVM使用常數η 與變動η於可靠度設計之比較 83 6.1 擋土牆 84 6.2 樁基礎 86 6.3 淺基礎 88 6.4 結論與討論 89 Chapter 7 結論與建議 91 參考文獻 94 作者簡歷 96 | |
dc.language.iso | zh-TW | |
dc.title | 有效隨機維度在大地工程可靠度中的角色 | zh_TW |
dc.title | The Role of Effective Random Dimension in Geotechnical
Reliability Analysis and Reliability-based Design | en |
dc.type | Thesis | |
dc.date.schoolyear | 102-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 楊國鑫,趙曉周,劉家男 | |
dc.subject.keyword | 分位數值法,機率門檻,有效隨機維度,可靠度設計,βη, | zh_TW |
dc.subject.keyword | QVM,Effective Random Dimension,Probability Threshold,RBD,βη, | en |
dc.relation.page | 96 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2014-07-07 | |
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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