Robust design of rock slopes with multiple failure modes: modeling uncertainty of estimated parameter statistics with fuzzy number

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Title:	Robust design of rock slopes with multiple failure modes: modeling uncertainty of estimated parameter statistics with fuzzy number
Authors:	田永銘;Xu, Changjie;Wang, Lei;Tien, Yong Ming;Chen, Jian-Min;Juang, C. Hsein
Contributors:	工學院土木工程學系
Keywords:	Biogeosciences;Design engineering;Earth and Environmental Science;Earth Sciences;Earth, ocean, space;Engineering and environment geology. Geothermics;Engineering geology;Environmental Science and Engineering;Exact sciences and technology;Failure modes;Fuzzy sets;Geochemistry;Geology;Hydrology/Water Resources;Mathematical models;Methodology;Natural hazards: prediction, damages, etc;Original Article;Parameter estimation;Rock;Rock properties;Rocks;Slope stability;Slopes;Statistics;Terrestrial Pollution;topographic slope;Uncertainty
Date:	2014-01-01
Issue Date:	2026-04-21 13:43:48 (UTC+8)
Publisher:	Springer Verlag;Berlin/Heidelberg: Springer-Verlag
Abstract:	摘要： The variability of shear characteristics of rock discontinuities is often difficult to ascertain. Thus, even with the reliability-based design (RBD) approach, which allows for consideration of the uncertainty of input parameters, the design of a rock slope system may be either cost-inefficient (overdesign) or unsafe (under-design), depending on whether the variation of input parameters is overestimated or underestimated. The uncertainty about the variation of input parameters is a critical issue in a RBD. This paper presents a feasible approach to addressing this problem using robust design concept. First, the uncertainty of the estimated statistics of input parameters (such as rock properties) is represented by fuzzy sets, which requires only the knowledge of lower and upper bounds of the estimated statistics. Then, the robust design concept is implemented to ensure that the final design is insensitive to, or robust against, the uncertainty of the estimated statistics of input parameters. The design methodology is demonstrated with an application to the design of a rock slope system with multiple failure modes. This design methodology, termed robust geotechnical design (RGD), aims to achieve a certain level of design robustness, in addition to meeting safety and cost requirements. In this paper, the RGD framework is realized through a multi-objective optimization, as it involves three requirements, safety, cost, and robustness. The significance of the design methodology is demonstrated with an example of rock slope design. 其他題名： Environ Earth Sci 出版者： Berlin/Heidelberg: Springer-Verlag 出版日期： 2014-10-01 出處： Environmental earth sciences, 2014-10, Vol.72 (8), p.2957-2969 資源來源： Agricultural & Environmental Science Collection 版權： Springer-Verlag Berlin Heidelberg 2014 版權： 2015 INIST-CNRS 識別號： ISSN: 1866-6280 識別號： EISSN: 1866-6299 識別號： DOI: 10.1007/s12665-014-3201-1
Appears in Collections:	[Department of Civil Engineering] journal & Dissertation

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