Confidence level-based robust design of cantilever retaining walls in sand

NCUIR > Engineering College > Department of Civil Engineering > journal & Dissertation > Item 987654321/99780

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/99780

Title:	Confidence level-based robust design of cantilever retaining walls in sand
Authors:	莊長賢;Liu, Zhifeng;Juang, C. Hsein;Atamturktur, Sez
Contributors:	工學院土木工程學系
Keywords:	Confidence;Confidence intervals;Confidence level;Epistemic uncertainty;Geotechnics;Reliability;Retaining walls;Robust design;Sand;Soil (material);Statistics;True reliability index;Uncertainty
Date:	2013-07-01
Issue Date:	2026-04-21 13:35:24 (UTC+8)
Publisher:	Elsevier BV;Elsevier Ltd
Abstract:	摘要： Reliability-based geotechnical design entails accurate sample statistics (i.e., mean and standard deviation or coefficient of variation, denoted herein as cov) of soil parameters. However, the cov values of soil parameters are difficult to determine with confidence due to the limited availability of high-quality data and inherent spatial variability. As a result, estimated cov values of soil parameters can vary within a wide range, which can result in overdesign or underdesign. In this paper, a confidence level (CL)-based method is proposed to address the problem of geotechnical design in the face of uncertainty. Here, CL is a measure of confidence that the target reliability index will be satisfied in the face of uncertainty in the estimated cov. The proposed method is demonstrated through the design of a cantilever retaining wall in sand. To ensure the practicality of the proposed method, a simplified approach was developed, which requires little extra effort over that required for traditional reliability-based design. To develop the CL-based method further, a metric called the “true reliability index” is proposed, which is the actual reliability index in the face of the uncertainty in the estimated parameter statistics (mainly cov). 出版者： Elsevier Ltd 出版日期： 2013-07 出處： Computers and geotechnics, 2013-07, Vol.52, p.16-27 資源來源： ScienceDirect Journals 版權： 2013 Elsevier Ltd 識別號： ISSN: 0266-352X 識別號： EISSN: 1873-7633 識別號： DOI: 10.1016/j.compgeo.2013.03.001
Appears in Collections:	[Department of Civil Engineering] journal & Dissertation

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