全过程及非均匀受火下内配型钢的钢管混凝土构件抗火性能
Project Number51468037
王文达
Abstract内配型钢的钢管混凝土构件是目前超高层建筑中常用的柱构件形式,目前国内外尚缺少其抗火性能的研究及设计方法。本课题以研究内部配置型钢的钢管混凝土组合构件在考虑升降温全过程火灾及非均匀火灾作用下的工作机理和设计方法为目标,进行各典型受火工况下该类组合构件的试验研究,细致分析和测试构件受火及受力全过程中内部型钢、核心混凝土及外钢管三者之间的受力特性,明晰其工作机理。建立基于三维弹塑性理论的有限元数值模型对试验试件进行模拟,用试验数据来校验数值模型,进一步对该类构件的受火性能及受力特性进行微观分析,细致剖析其在各种受火及荷载工况下的变形特征和典型的破坏形式。基于前述数值模型,进行工程常用参数范围内此类组合构件在各种典型火灾及荷载工况下力学性能的参数分析,提供内配型钢的钢管混凝土构件的各种火灾工况下的抗火设计方法,为此类结构抗火设计和工程应用提供参考,进一步完善内配型钢钢管混凝土组合构件的设计理论。【英文摘要】Theconcrete-filledsteeltubularmemberwithinternalprofiledsteelisthetypicalandcommontypeforcolumnsofthesuperhigh-risebuildingscurrently,andthereareratherfewresearchesonitsfireresistanceandfiredesignapproach.Thisprojectwillstudythemechanicalmechanismanddesignapproachesofconcrete-filledsteeltubularmemberswithinternalprofiledsteelexposuretostandardfire,non-uniformfireandoverallstagefireswithascendinganddescendingtemperature.Thefireexperimentswillbeperformedofthistypeofcompositemembersundervariousfirescenesandcombinedaxialload.Themechanicalbehaviorandmechanismofthosethreecomponents,thatareinnerprofiledsteel,coreconcreteandsteeltube,shouldbeinvestigatedbasedonexperimentsandnumericalsimulation.A3-Dfiniteelementanalysis(FEA)modelwillbedevelopedtosimulatedtheperformanceofthetestedspecimens.ThetestresultsareusedtoverifytheFEAmodel.Amicrodetailedanalysisshouldbeperformedtorevealthemechanicalbehavior,deformationsandtypicalfailuremodesofthecompositemembersundervariousfiresandcombinedloads.ParametricstudiescarryoutinacommonscaleforpracticalengineeringusingthevalidatedFEMmodelundervarioustypicalfiresandloads.Thesystematicalfireresistancedesignapproachesandformulaswillbeachievedtoperfectthedesigntheoryandpracticalengineeringforthistypeofcompositemembers.
Subtype地区科学基金项目
Project Source国家自然科学基金
2015-01
End Date2018-12
MOST Discipline Catalogue11 - 工程与技术 ; 1105 - 建筑环境与结构工程
Host Institution兰州理工大学
Project Funding480000.0
CountryCN
Language中文
Document Type项目
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64723
Collection国际合作处(港澳台办)
土木工程学院
Recommended Citation
GB/T 7714
王文达.全过程及非均匀受火下内配型钢的钢管混凝土构件抗火性能.2015.
Files in This Item:
There are no files associated with this item.
Related Services
Usage statistics
Google Scholar
Similar articles in Google Scholar
[王文达]'s Articles
Baidu academic
Similar articles in Baidu academic
[王文达]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[王文达]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.