文章编号：1000-4750(2023)Suppl-0227-07常规混凝土框剪结构连续倒塌动力响应分析黄咏政1，王森钠2，梁子晗2，尹续峰1，李易2(1.北京特种工程设计研究院，北京100028；2.北京工业大学工程抗震与结构诊治北京市重点实验室，北京100124)摘要：多高层办公建筑主要采用混凝土框剪结构，其在局部结构构件失效下的整体结构连续倒塌可能引发严重的经济损失和社会影响。该文针对常规结构布置的典型框剪结构开展了动力连续倒塌分析，总结其规律为结构毁伤下的连续倒塌快速评估提供依据。主要工作包括：按照不同抗震设防烈度、跨度、层数设计了18个典型结构布置的框剪结构，并采用纤维梁单元和分层壳单元建立了整体结构的数值模型库；采用非线性动力拆除构件法对整体结构开展了计算分析，获得结构系统在局部构件失效下的动力响应；对比分析不同结构的连续倒塌动力响应，研究不同参数对连续倒塌后果的影响。关键词：框剪结构；连续倒塌；非线性动力拆除构件分析；纤维梁单元；分层壳单元中图分类号：TU311.3文献标志码：Adoi:10.6052/j.issn.1000-4750.2022.05.S003DYNAMICPROGRESSIVECOLLAPSERESPONSESOFTYPICALRCFRAME-SHEARWALLSTRUCTURESHUANGYong-zheng1,WANGSen-na2,LIANGZi-han2,YINXu-feng1,LIYi2(1.BeijingSpecialEngineeringDesignandResearchInstitute,Beijing100028,China;2.BeijingKeyLaboratoryofEarthquakeEngineeringandStructuralRetrofit,BeijingUniversityofTechnology,Beijing100124,China)Abstract:High-riseofficebuildingsmainlyadoptframe-shearwallstructures.Thewholestructuremaycollapseprogressivelytriggeredbyinitialfailureofcriticalstructuralelement(s),eventuallyresultinginseriouseconomiclossesandsocialimpact.Dynamicprogressivecollapseanalysiswasconductedontypicalreinforcedconcrete(RC)frame-shearwallstructuresandthecollapsemechanismwassummarized,whichprovidedabasisforrapidassessmentfortheprogressivecollapseofRCframe-shearwallstructures.Theresearchincludedthefollowingworks:EighteentypicalRCframe-shearstructuresweredesignedinaccordancewithdifferentseismicfortificationintensities,spanlengthsandnumberofstories.ThenumericalmodelsofthestructureswereestablishedinwhichfiberbeamelementsandmultilayershellelementswereusedtosimulateRCbeamsandcolumnsandRCshearwalls,respective...
