2022·12·BuildingConstruction2956既有框架结构基于构件的抗震加固细部构造研究顾夏英冯军艇孙杰朱海苏州中固建筑科技股份有限公司江苏苏州215152摘要：为解决既有框架结构基于构件的抗震加固时钢筋过密、混凝土浇筑不密实、抗剪不足、纵向受力钢筋锚固不足等节点区出现的问题，提出节点区扩大、节点区打开、节点区预制包钢、节点区新增柱帽等措施，以提高框架结构节点区抗震能力，技术简单易实施，能有效解决框架结构抗震加固中细部构造难问题，对同类的既有框架结构抗震加固具有较大的借鉴意义。研究结果表明：框架结构节点区细部构造被大大简化，且明显提高了抗震能力，满足现行规范。关键词：抗震加固；框架结构；节点区；细部构造中图分类号：TU746文献标志码：A文章编号：1004-1001(2022)12-2956-03DOI：10.14144/j.cnki.jzsg.2022.12.042StudyonDetailStructureofComponent-basedSeismicStrengtheningofExistingFrameStructuresGUXiayingFENGJuntingSUNJieZHUHaiSuzhouZhongguBuildingTechnologyCo.,Ltd.,Suzhou,Jiangsu215152,ChinaAbstract:Tosolvetheproblemsinthejointareaoftheexistingframestructureduringthecomponent-basedseismicreinforcement,suchasoverdensereinforcement,non-denseconcretepouring,insufficientshearresistance,andinsufficientanchorageoflongitudinalforce-bearingreinforcement,themeasuressuchasexpansionofthejointarea,openingofthejointarea,prefabricationofsteelcladdinginthejointarea,andadditionofcolumncapsinthejointareaareproposedtoimprovetheseismiccapacityofthejointareaoftheframestructure.Thetechniqueissimpleandeasytoimplement,whichcaneffectivelysolvetheproblemofdifficultdetailsintheseismicstrengtheningofframestructures,andhasgreatreferencesignificancefortheseismicstrengtheningofsimilarexistingframestructures.Theresultsshowthatthedetailstructureofthejointareaoftheframestructureisgreatlysimplified,theseismiccapacityissignificantlyimproved,andthecurrentspecificationsaremetaccordingly.Keywords:seismicstrengthening;framestructure;jointarea;detailstructure增加建筑的结构抗力，第2种是改变结构的抗震自身参数，第3种是减小建筑承受的地震作用。上述3种加固方案，使用频率较高的是第1种：提高结构抗力法。而最为常见是基于构件的抗震加固方法，...
