文档介绍：塑性法计算框架结构层间弹塑性位移左春仁(大连大学土木系大连 116622) 左振宇(大连市建筑设计研究院大连 116021) 摘要: 目前,我国建筑防倒塌验算是通过对罕遇地震作用下对薄弱层的层间弹塑性位移的验算来实现的。层间弹塑性变形是通过弹塑性时程分析和简化计算方法进行的。前者计算费机时,没能得到普遍应用,后者应用存在局限性。通过对框架结构最危险的倒塌模型———柱铰形侧移机构,对薄弱层的塑性变形通过塑性分析的虚功原理推求框架结构柱铰形侧移的计算方法,应用此计算方法对大连市两栋框架结构进行计算,其结果与弹塑性时程分析法结果基本相符。关键词: 层间弹塑性位移塑性分析法虚功原理塑性铰柱铰形侧移机构 CALCULATIONOFELASTOPLASTICDISPLACEMENTBETWEENLAYERSOF FRAMEDSTRUCTUREBYPLASTICMETHOD ZuoChunren (DepartmentofCivilEngineeringofDalianUniversity Dalian 116622) ZuoZhenyu (DalianArchitecturalDesignandResearchInstituteDalian 116021) Abstract: Atpresent,putationofcollapsepreventingperformanceofarchitectureisrealizedby calculatingtheplasticdisplacementbetweenlayersoftheunsubstantiallayerundertheactionoftherarelymet ,whilethelatterhassome structurebyanalyzingplasticswayofthecolumnhingeswaymechanism—themostdangerouscollapsemodelin theframeworkstructurewiththevirtualprincipleofplasticanalysis,andcalculatedtwoframeworkstructuresand theresultsisalmostthesameasthosecalculatedbymethodofplasticanalysis. Keywords: elastoplasticdisplacementbetweenlayers methodofplasticanalysis virtualworkprinciple plastichinges columnhingelateralmechanism 第一作者:左春