{"title":"基于鲁棒性和可靠性的钢梁设计优化","authors":"P. Zabojszcza, U. Radoń, Piotr Tauzowski","doi":"10.24425/ace.2023.147651","DOIUrl":null,"url":null,"abstract":": In line with the principles of modern design a building structure should not only be safe but also optimized. In deterministic optimization, the uncertainties of the structures are not explicitly taken into account. Traditionally, uncertainties of the structural system (i.e. material parameters, loads, dimensions of the cross-sections) are considered by means of partial safety factors specified in design codes. Worth noticing, that optimal structures are sensitive to randomness design parameters and deterministic optimal solutions may lead to reduced reliability levels. It therefore seems natural to extendtheformulationofdeterministicoptimizationwiththerandomscatterofparametervalues.Suchaformulationisofferedbyrobustoptimizationandreliability-baseddesignoptimization.Theapplicability ofRBDOisstronglydependentontheavailabilityofthejointprobabilitydensityfunction.Aformulationofnon-deterministicoptimizationthatbetteradaptstothedesignrealitiesisrobustoptimization. UnlikeRBDOoptimization,thisformulationdoesnotrequireestimationoffailureprobabilities.Inthepaperusingtheexamplesofsteelbeams,theauthorscomparethestrengthsandweaknessesofboth formulations","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Robust and reliability-based design optimization of steel beams\",\"authors\":\"P. Zabojszcza, U. Radoń, Piotr Tauzowski\",\"doi\":\"10.24425/ace.2023.147651\",\"DOIUrl\":null,\"url\":null,\"abstract\":\": In line with the principles of modern design a building structure should not only be safe but also optimized. In deterministic optimization, the uncertainties of the structures are not explicitly taken into account. Traditionally, uncertainties of the structural system (i.e. material parameters, loads, dimensions of the cross-sections) are considered by means of partial safety factors specified in design codes. Worth noticing, that optimal structures are sensitive to randomness design parameters and deterministic optimal solutions may lead to reduced reliability levels. It therefore seems natural to extendtheformulationofdeterministicoptimizationwiththerandomscatterofparametervalues.Suchaformulationisofferedbyrobustoptimizationandreliability-baseddesignoptimization.Theapplicability ofRBDOisstronglydependentontheavailabilityofthejointprobabilitydensityfunction.Aformulationofnon-deterministicoptimizationthatbetteradaptstothedesignrealitiesisrobustoptimization. UnlikeRBDOoptimization,thisformulationdoesnotrequireestimationoffailureprobabilities.Inthepaperusingtheexamplesofsteelbeams,theauthorscomparethestrengthsandweaknessesofboth formulations\",\"PeriodicalId\":45753,\"journal\":{\"name\":\"Archives of Civil Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-12-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Archives of Civil Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.24425/ace.2023.147651\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of Civil Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.24425/ace.2023.147651","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
Robust and reliability-based design optimization of steel beams
: In line with the principles of modern design a building structure should not only be safe but also optimized. In deterministic optimization, the uncertainties of the structures are not explicitly taken into account. Traditionally, uncertainties of the structural system (i.e. material parameters, loads, dimensions of the cross-sections) are considered by means of partial safety factors specified in design codes. Worth noticing, that optimal structures are sensitive to randomness design parameters and deterministic optimal solutions may lead to reduced reliability levels. It therefore seems natural to extendtheformulationofdeterministicoptimizationwiththerandomscatterofparametervalues.Suchaformulationisofferedbyrobustoptimizationandreliability-baseddesignoptimization.Theapplicability ofRBDOisstronglydependentontheavailabilityofthejointprobabilitydensityfunction.Aformulationofnon-deterministicoptimizationthatbetteradaptstothedesignrealitiesisrobustoptimization. UnlikeRBDOoptimization,thisformulationdoesnotrequireestimationoffailureprobabilities.Inthepaperusingtheexamplesofsteelbeams,theauthorscomparethestrengthsandweaknessesofboth formulations
期刊介绍：
ARCHIVES OF CIVIL ENGINEERING publish original papers of the theoretical, experimental, numerical and practical nature in the fields of structural mechanics, soil mechanics and foundations engineering, concrete, metal, timber and composite polymer structures, hydrotechnical structures, roads, railways and bridges, building services, building physics, management in construction, production of construction materials, construction of civil engineering structures, education of civil engineers.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
