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基于安全度约束的多次预应力钢结构优化设计(英文).docx

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基于安全度约束的多次预应力钢结构优化设计(英文) BasedontheSafetyDegreeConstraint,Multi-Pre-stressedSteelStructureOptimizationDesign Abstract: Pre-stressedsteelstructuresarewidelyusedinlarge-spanbuildingsandbridgesduetotheirhighstrength,durability,andflexibility.However,thedesignofpre-stressedsteelstructuresisacomplextaskthatrequiresadeepunderstandingofthestructuralbehaviorandtheinteractionbetweendifferentcomponents.Inthispaper,weproposeanovelapproachfortheoptimizationdesignofpre-stressedsteelstructuresbasedonthesafetydegreeconstraint.Theproposedapproachaimstoensurethesafetyofthestructureundervariousloadingconditionswhileminimizingthematerialandconstructioncosts.Todemonstratetheeffectivenessofourapproach,wepresentacasestudyofapre-stressedsteelbridgedesign,andcomparetheresultswiththoseobtainedfromtraditionaldesignmethods. Keywords:pre-stressedsteelstructures,optimization,safetydegreeconstraint,cost-effectivedesign Introduction: Pre-stressedsteelstructureshavebecomeincreasinglypopularintheconstructionindustryduetotheirhighload-bearingcapacityandflexibility.Thesestructuresaretypicallycomposedofacombinationofsteelandconcretecomponents,andthepre-stressisachievedbyapplyinganexternalforcetothesteelcomponentsbeforetheconcreteispoured.Thepre-stresshelpstocounteractthedeformationscausedbytheweightofthestructureandtheloadsthatitcarries,thusincreasingitsdurabilityandstrength. Thedesignofpre-stressedsteelstructuresisacomplextaskthatrequiresadeepunderstandingofthestructuralbehaviorandtheinteractionbetweendifferentcomponents.Intraditionaldesignmethods,thestructuralanalysisisbasedonsimplifiedmodelsandempiricalformulas,whichmaynotaccuratelyreflecttheactualbehaviorofthestructure.Moreover,thefocusisoftenonmeetingtheminimumsafetyrequirementsspecifiedinthebuildingcodes,ratherthanonachievinganoptimaldesignthatbalancessafety,cost,andperformance. Inthispaper,weproposeanovelapproachfortheoptimizationdesignofpre-stressedsteelstructuresbasedonthesafetydegreeconstraint.Theproposedapproachaimstoensurethesafetyofthestr