BEHAVIOUROFCOLDFORMEDHIGHSTRENGTHSTEELUNDERTRANSIENTSTATETESTS
BEHAVIOUROFCOLDFORMEDHIGHSTRENGTHSTEELUNDERTRANSIENTSTATETESTS.pdf
Thispaperpresentsthematerialpropertiesofcold-formedhighstrengthsteelatelevatedtemperaturesundertransientstatetests.Materialpropertiesatelevatedtemperatureshaveacrucialroleinfireresistancedesignofsteelstructures.Thefireresistancesofsteelstructuresintheexistinginternationalstandardsaremainlybasedonexperimentaldataofhot-rolledmildsteel.However,investigationofhighstrengthsteelatelevatedtemperaturesislimited.Therefore,atestprogramhasbeencarriedouttoinvestigatethematerialpropertiesofcold-formedhighstrengthsteelatelevatedtemperatures.Thecouponspecimenswereextractedfromcold-formedhighstrengthsteelsquareandrectangularhollowsectionswithnominalyieldstressesof700and900MPaatambienttemperature.Thecoupontestswerecarriedoutthroughtransientstatetestmethod.Materialpropertiesincludingthermalelongation,elasticmodulusandyieldstresswereobtainedfromthetests.ThetestresultswerecomparedwiththedesignvaluesintheEuropean,American,AustralianandBritishstandards.Thecomparisonresultsrevealedthenecessityofproposingspecifieddesignrulesformaterialpropertiesofcold-formedhighstrengthsteelatelevatedtemperatures.Newdesigncurvestodeterminethedeteriorationofmaterialpropertiesofcold-formedhighstrengthsteelatelevatedtemperaturesareproposed.Itisshownthattheproposeddesigncurvesaresuitableforhighstrengthsteelmaterialswithnominalyieldstressesrangedfrom690to960MPaatambienttemperature.
作者：Hai-TingLiBenYoung
作者单位：DepartmentofCivilEngineering,TheUniversityofHongKong,PokfulamRoad,HongKong,China
母体文献：第九届海峡两岸及香港钢及组合结构技术研讨会论文集
会议名称：第九届海峡两岸及香港钢及组合结构技术研讨会
会议时间：2017年1月5日
会议地点：香港
主办单位：香港钢结构学会
语种：chi
分类号：
关键词：Cold-formedElevatedtemperaturesFireresistanceHighstrengthsteelMaterialpropertiesTransientstatetests
在线出版日期：2021年3月22日
基金项目：
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