Numericalsimulationofreinforcedconcretestructurebasedon separateelementandcommonnodemode
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摘要: 通过大型有限元分析软件ANSYS/LS-DYNA,充分考虑钢筋和混凝土在结构倒塌时各自的受力 状态和强度差异,运用分离式共节点模型模拟钢筋混凝土结构建筑物的爆破拆除倒塌过程。通过对倒塌过程 中钢筋混凝土支撑立柱内侧和外侧的钢筋单元、混凝土单元的承载失效过程分析研究,对数值模拟效果与实 际爆破效果对比分析得出:分离式共结点模型可以充分体现结构倒塌过程中钢筋和混凝土材料的承载失效 差异,可以用来准确地模拟结构的倒塌过程。Abstract: Thedifferencesoftheload-bearingstateandtheintensitywereconsideredbetweensteeland concretewhileastructurecollapsing.Acommonnodeseparatemodelwasadoptedtosimulatethe collapseprocessofareinforcedconcretestructurebyusingthefiniteelementanalysissoftwareANSYS/ LS-DYNA.Aseriesofanalysiswerecarriedoutforthefailureprocessesofthesteelandconcreteelementsinsideandoutsidethesteel- reinforcedconcretesupportpillars.Andthesimulatedresultswerecomparedwiththeactualblastingresults. Itisshownthatthecommonnodeseparatemodelcandescribetheloadfailuredifferencesbetweensteelandconcreteinthecollapseprocessofthere nforcedconcretestructures.Anditisfeasiblethatthecommonnodeseparatemodelisusedtosimulatethecollapseprocessofthereinforcedconcretestructures
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