An optimization based approach for structural design considering safety, robustness, and cost

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題名:	An optimization based approach for structural design considering safety, robustness, and cost
作者:	莊長賢;Dalton, Sarah K.;Atamturktur, Sez;Farajpour, Ismail;Juang, C. Hsein
貢獻者:	工學院土木工程學系
關鍵詞:	Applied sciences;Building economics. Cost;Buildings. Public works;Computation methods. Tables. Charts;Design engineering;Exact sciences and technology;Optimization;Robustness;Safety;Sensitivity index;Stresses. Safety;Structural analysis. Stresses;Structural design;Structural design methods;Structural modeling;Tradeoffs;Uncertainty;Uncertainty quantification
日期:	2013-12-01
上傳時間:	2026-04-21 13:37:49 (UTC+8)
出版者:	Elsevier BV;Kidlington: Elsevier Ltd
摘要:	摘要： •A robust structural design is sought through single objective optimization techniques.•A sensitivity index that integrates the robustness and safety requirements is proposed.•The method is successfully demonstrated on a reinforced-concrete frame with steel bracing.•A fast running surrogate model is trained to reduce the computational demands.•For a given cost, it is possible to find a more robust structural design. Structural systems are subject to uncertainties due to variability in many hard-to-control noise factors, which include external loads, material properties, and construction workmanship. Traditional structural design methodologies, although clearly recognizing the presence of uncertainty, omit robustness against the effects of uncertainty in the design process. First, if the actual uncertainties in the design process are underestimated, the design may fail to satisfy safety requirements. Second, to guarantee safety in the presence of high variability of the system response, the structural designer may be forced to choose an overly conservative, thus inefficient and costly design. When robustness against uncertainty is not treated as one of the design objectives, the trade-off between over-design for safety and under-design for cost-savings is exacerbated. This manuscript demonstrates that safe and cost-effective structural engineering designs maybe achieved by implementing Robust Design concepts originally developed in manufacturing engineering to consider robustness against uncertainty. This manuscript presents an optimization-based methodology for the application of Robust Design principles to structural design and demonstrates its application on an academic problem involving design of a reinforced-concrete frame. 出版者： Kidlington: Elsevier Ltd 出版日期： 2013-12-01 出處： Engineering structures, 2013-12, Vol.57, p.356-363 版權： 2013 Elsevier Ltd 版權： 2015 INIST-CNRS 識別號： ISSN: 0141-0296 識別號： EISSN: 1873-7323 識別號： DOI: 10.1016/j.engstruct.2013.09.040 識別號： CODEN: ENSTDF
顯示於類別:	[土木工程學系 ] 期刊論文

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